972421 SzGeCERN 20240223163806.0 oai:cds.cern.ch:972421 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923631 Inspire 727788 CERN-AB-2006-063 eng CERN Library AB-2006-063 EUROTeV-Report-2006-050 Eliasson, P Study of an ILC Main Linac that Follows the Earth Curvature 2006 Geneva CERN 13 Jul 2006 4 p In the base line configuration, the tunnel of the ILC will follow the earth curvature. The emittance growth in a curved main linac has been studied including static and dynamic imperfections. These include effects due to current ripples in the power supplies of the steering coils and the impact of the beam position monitors scale errors. CC-BY publication JACoW CERN EDS SIS EUROTeV2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN alignment CERN emittance CERN laser CERN linac CERN quadrupole CERN ARTICLE EUROTeV ILC Not applicable JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Latina, A AUTHOR|(CDS)2068659 #BEARD# Poirier, F Schulte, Daniel AUTHOR|(CDS)2067943 #BEARD# Walker, N AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-063 Access to fulltext document http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-050_Nummerfehlt.pdf Fulltext https://accelconf.web.cern.ch/e06/PAPERS/MOPLS098.PDF Published version from JACoW http://cds.cern.ch/record/972421/files/EUROTeV-Report-2006-050_Nummerfehlt.pdf Fulltext http://cds.cern.ch/record/972421/files/ab-2006-063.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN DESY, Hamburg, Germany n 200629 a2006 13 20100901 1607 CER01 20060717 687798 786 edinburgh20060626 PUBLIC 002636322CER ARTICLE ConferencePaper 002636842CER01 002635547CER01 971749 SzGeCERN 20240223163740.0 oai:cds.cern.ch:971749 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161786 Inspire 737964 CERN-AB-2006-025 eng CERN Library AB-2006-025 Rossi, C High gradient tests of an 88 MHz RF cavity for muon cooling 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-25 16:39:55 The scheme for a Muon Cooling channel developed at CERN in the frame of Neutrino Factory studies foresees the use of 44 and 88 MHz cavities operating at a real-estate gradient as high as 4 MV/m. To assess the feasibility of this scheme, including high-gradient operation at relatively low frequency and the production and handling of high RF peak powers, a test stand was assembled at CERN. It included an 88 MHz resonator reconstructed from a 114 MHz cavity previously used for lepton acceleration in the PS, a 2.5 MW final amplifier made out of an old linac unit improved and down-scaled in frequency, and a PS spare amplifier used as driver stage. After only 160 hours of conditioning the cavity passed the 4 MV/m level, with local peak surface field in the gap exceeding 25 MV/m (2.4 times the Kilpatrick limit). The gradient was limited by the amplifier power, the maximum RF peak output power achieved during the tests being 2.65 MW. This paper presents the results of the tests, including an analysis of field emission from the test cavity, and compares the results with the experience in conditioning ion linac RF cavities at CERN. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN LEFT CERN factory CERN linac CERN simulation CERN ARTICLE XX XX JACoW T06 Room Temperature RF JACoW 07 Accelerator Technology Garoby, R Gerigk, F Marques-Balula, J Vretenar, M AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-025 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPCH143.PDF Published version from JACoW http://cds.cern.ch/record/971749/files/ab-2006-025.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060713 687798 1352 edinburgh20060626 PUBLIC 002636037CER ARTICLE ConferencePaper 971750 SzGeCERN 20241025033918.0 oai:cds.cern.ch:971750 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7148348 Inspire 737834 CERN-AB-2006-026 eng CERN Library CLIC-Note-0689 CERN Library AB-2006-026 CLIC-Note-689 CTF3-Note-084 Döbert, Steffen CERN Integration of the PHIN RF Gun into the CLIC Test Facility 2006 Geneva CERN 13 Jul 2006 5 p revised version submitted on 2006-10-03 16:47:53 CERN is a collaborator within the European PHIN project, a joint research activity for Photo injectors within the CARE program. A deliverable of this project is an rf Gun equipped with high quantum efficiency Cs2Te cathodes and a laser to produce the nominal beam for the CLIC Test Facility (CTF3). The nominal beam for CTF3 has an average current of 3.5 A, 1.5 GHz bunch repetition frequency and a pulse length of 1.5 ìs (2332 bunches) with quite tight stability requirements. In addition a phase shift of 180 deg is needed after each train of 140 ns for the special CLIC combination scheme. This rf Gun will be tested at CERN in fall 2006 and shall be integrated as a new injector into the CTF3 linac, replacing the existing injector consisting of a thermionic gun and a subharmonic bunching system. The paper studies the optimal integration into the machine trying to optimize transverse and longitudinal phase space of the beam while respecting the numerous constraints of the existing accelerator. The presented scheme uses emittance compensation and velocity bunching to fulfil the requirements. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CERN CERN CTF3 CERN bunching CERN emittance CERN gun CERN ARTICLE CLIC CTF3 JACoW A08 Linear Accelerators JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques AB RF https://accelconf.web.cern.ch/e06/PAPERS/MOPLS129.PDF Published version from JACoW 9651 86084 http://cds.cern.ch/record/971750/files/ab-2006-026.pdf Fulltext Tjitske.Kehrer@cern.ch steffen.doebert@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060713 687798 861 edinburgh20060626 PUBLIC 002636038CER CLINOT ARTICLE ConferencePaper 002733815CER01 971752 SzGeCERN 20240223163741.0 oai:cds.cern.ch:971752 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161794 Inspire 737965 CERN-AB-2006-027 eng CERN Library AB-2006-027 CARE-Conf-06-018-HIPPI CARE-Conf-2006-018-HIPPI Garoby, R CERN Linac4, a New Injector for the CERN PS Booster Linac4, the future Injector of the CERN complex of Proton accelerators 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-25 16:44:41 The first bottle-neck towards higher beam brightness in the LHC injector chain is due to space charge induced tune spread at injection into the CERN PS Booster (PSB). A new injector called Linac4 is proposed to remove this limitation. Using RF cavities at 352 and 704 MHz, it will replace the present 50 MeV proton Linac2, and deliver a 160 MeV, 40 mA H- beam. The higher injection energy will reduce space charge effects by a factor of 2, and charge exchange will drastically reduce the beam losses at injection. Operation will be simplified and the beam brightness required for the LHC ultimate luminosity should be obtained at PS ejection. Moreover, for the needs of non-LHC physics experiments like ISOLDE, the number of protons per pulse from the PSB will increase by a significant factor. This new linac constitutes an essential component of any of the envisaged LHC upgrade scenarios. It is also designed to become the low energy part of a future 3.5 GeV, multi-megawatt superconducting linac (SPL). The present design has benefited from the support of the French CEA and IN2P3, of the European Union and of the ISTC (Moscow). The proposed machine and its layout on the CERN site are described. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added SIS CARE2008 CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN SCL CERN emittance CERN linac CERN rfq ARTICLE CERN CERN PSB JACoW A08 Linear Accelerators JACoW 04 Hadron Accelerators Bellodi, G CERN Gerigk, F CERN Hanke, K CERN Lombardi, A CERN Pasini, M CERN Rossi, C CERN Sargsyan, E CERN Vretenar, M CERN AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-027 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS057.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/CARE/Conf/care-conf-06-018.pdf Fulltext http://cds.cern.ch/record/971752/files/ab-2006-027.pdf Access to fulltext document http://cds.cern.ch/record/971752/files/care-conf-06-018.pdf Fulltext Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060713 687798 1624 edinburgh20060626 1980826 37-39 mumbai20061101 PUBLIC 002636040CER ARTICLE ConferencePaper 971735 SzGeCERN 20241025033914.0 oai:cds.cern.ch:971735 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161778 Inspire 737963 CERN-AB-2006-024 eng CERN Library CLIC-Note-0688 CERN Library AB-2006-024 CLIC-Note-688 CTF3-Note-083 Grudiev, A CERN Development of a novel rf waveguide vacuum valve 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-10-06 16:59:51 The development of a novel rf waveguide vacuum valve is presented. The rf design is based on the use of TE0n modes of circular waveguides. In the device, the TE01 mode at the input is converted into a mixture of several TE0n modes which provide low-loss rf power transmission across the vacuum valve gap, these modes are then converted back into the TE01 mode at the output. There are a number of advantages associated with the absence of surface fields in the region of the valve: • Possibility to use commercially available vacuum valves equipped with two specially designed mode converter sections. • No necessity for an rf contact between these two sections. • Increased potential for high power rf transmission. This technology can be used for all frequencies for which vacuum waveguides are used. In rectangular waveguides, mode converters from the operating mode into the TE01 mode and back again are necessary. Experimental results for the 30 GHz valves developed for the CLIC Test Facility 3 (CTF3) are presented showing in particular that the rf power transmission losses are below 1%. The rf waveguide vacuum valve installed in CTF3 has been tested with high power and is now in routine operation at power levels up to 40 MW and pulse length of 70 ns. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN CTF3 CERN coupling CERN electromagnetic-fields CERN vacuum CERN ARTICLE CLIC CTF3 JACoW T06 Room Temperature RF JACoW 07 Accelerator Technology AB RF https://accelconf.web.cern.ch/e06/PAPERS/TUPCH142.PDF Published version from JACoW 9649 233120 http://cds.cern.ch/record/971735/files/ab-2006-024.pdf Fulltext Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060713 687798 1349 edinburgh20060626 PUBLIC 002635957CER CLINOT ARTICLE ConferencePaper 971754 SzGeCERN 20241025033919.0 CLINOT ARTICLE ConferencePaper Grudiev, A CERN CERN-AB-2006-028 CLIC Not applicable CERN ARTICLE JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Wuensch, Walter CERN Tjitske.Kehrer@cern.ch A novel procedure for the optimization of CLIC main linac parameters including operating frequency and the accelerating gradient is presented. The optimization procedure takes into account both beam dynamics and high power rf constraints. Beam dynamics constraints are given by emittance growth due to short- and long-range transverse wakefields. RF constraints are given by rf breakdown and pulsed surface heating limitations of the accelerating structure. Interpolation of beam and structure parameters in a wide range allows hundreds of millions of accelerating structures to be analyzed to find the structure with the highest ratio of luminosity to main linac input power, which is used as the figure of merit. The frequency and gradient have been varied in the ranges 12-30 GHz and 90-150 MV/m respectively. It is shown that the optimum frequency lies in the range from 16 to 20 GHz depending on the accelerating gradient and that the optimum gradient is below 100 MV/m. Based on our current understanding of the constraints, changing the frequency and gradient from current values of 30 GHz and 150 MV/m to the optimum ones doubles the luminosity for the same main linac input power. Nevertheless, overall extension of the collider and investment cost considerations are not taken into account and impose gradient larger than 100 M/m to 120 MV/m. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN damping CERN emittance CERN linac CERN luminosity SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-09-13 16:53:44 CLIC-Note-677 4 p Optimum frequency and gradient for the CLIC main linac accelerating structure oai:cds.cern.ch:971754 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161808 Inspire 737966 2006 Geneva CERN 13 Jul 2006 AB ABP https://accelconf.web.cern.ch/e06/PAPERS/WEOAPA02.PDF Published version from JACoW 9654 279843 http://cds.cern.ch/record/971754/files/ab-2006-028.pdf Fulltext eng CERN Library CLIC-Note-0677 CERN Library AB-2006-028 13 20100901 1607 CER01 20060713 687798 1867 edinburgh20060626 PUBLIC 002636041CER 971759 SzGeCERN 20240223163741.0 ARTICLE ConferencePaper 1356556 Hancock, S CERN Chance, A IRFU, Saclay CERN-AB-2006-029 EURISOL-12-23-2006-0005 XX XX CERN ARTICLE JACoW A14 Advanced Concepts JACoW 04 Hadron Accelerators Tjitske.Kehrer@cern.ch The so-called beta-beam concept for accelerator-driven neutrino experiments envisages the production of a pure beam of electron neutrinos (or their antiparticles) through the beta-decay of radioactive ions circulating in a highenergy storage ring. An unprecedented number of ions must be collected in the decay ring and maintained in a few short bunches. Stacking is unavoidable to match the available source rates with this demand. A new stacking method makes use of off-momentum injection into the decay ring to approach the circulating beam without requiring ultra-fast injection elements, rotation in the longitudinal plane to bring the fresh bunches onto the central orbit and asymmetric merging to transport these ions into the centre of the large stack. Simulation results are presented for the repetitive stacking process for two candidate ion species of significantly different charge-tomass ratio. CERN CERN CERN collimation CERN injection CERN ion CERN simulation SzGeCERN Accelerators and Storage Rings EURISOL 12: TASK 12 Task n 200628 a2006 revised version submitted on 2006-08-28 14:36:45 4 p CERN Library AB-2006-029 oai:cds.cern.ch:971759 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161816 Inspire 737967 2006 19/06/06 Geneva CERN 13 Jul 2006 AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-029 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS085.PDF Published version from JACoW http://cds.cern.ch/record/971759/files/ab-2006-029.pdf Access to fulltext document eng Stacking simulations in the beta-beam decay ring CERN CEA, Saclay 13 20100901 1607 CER01 20060713 687798 1699-1702 edinburgh20060626 PUBLIC 002636042CER FP6 515768 EURISOL DS openAccess CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 971762 SzGeCERN 20240223163741.0 oai:cds.cern.ch:971762 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161824 Inspire 737968 CERN-AB-2006-030 eng CERN Library AB-2006-030 Tückmantel, Joachim Adaptive RF Transient Reduction for HIGH Intensity Beams with Gaps 2006 Geneva CERN 13 Jul 2006 4 p When a high-intensity beam with bunch-trains and gaps passes a cavity with a high-gain vector feedback enforcing a constant voltage, large transients appear, stressing the RF high power hardware and increasing the trip rate. By modulating the cavity voltage with a varying periodic waveform (set-function), the RF power can be made constant while still preserving the high feedback gain. The average cavity voltage is conserved but bunches have to settle at slightly shifted positions. A method is derived to obtain this set-function in practice while making no assumptions or measurements of the beam or RF parameters. Adiabatic iterations are made including the whole machine as an analog computing device, using all parameters as they are. A computer simulation shows the success of the method. CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LHC CERN beam-losses CERN feedback CERN simulation CERN synchrotron CERN ARTICLE XX XX JACoW A01 Hadron Colliders JACoW 01 Circular Colliders AB RF http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-030 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/MOPLS006.PDF Published version from JACoW http://cds.cern.ch/record/971762/files/ab-2006-030.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060713 687798 541 edinburgh20060626 PUBLIC 002636043CER ARTICLE ConferencePaper 971774 SzGeCERN 20241025034209.0 oai:cds.cern.ch:971774 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7148330 Inspire 737833 CERN-AB-2006-031 eng CERN Library CLIC-Note-0678 CERN Library AB-2006-031 CLIC-Note-678 Calatroni, S CERN Status of the Fatigue Studies on the CLIC Accelerating Structures 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-13 16:56:55 The need for high accelerating gradients for the future multi-TeV e+e- Compact Linear Collider (CLIC) imposes considerable constraints on the materials of the accelerating structures. The surfaces exposed to high pulsed RF (Radio Frequency) currents are subject to cyclic thermal stresses which are expected to induce surface break up by fatigue. Since no fatigue data exists in the literature up to very large numbers of cycles and for the particular stress pattern present in RF cavities, a comprehensive study of copper alloys in this parameter range has been initiated. Fatigue data for selected copper alloys in different states are presented CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CERN CERN CLIC CERN laser CERN radio-frequency CERN target CERN ARTICLE CLIC Not applicable JACoW A08 Linear Accelerators JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Heikkinen, Samuli Tapio Helsinki University of Technology, Finland CERN Neupert, H CERN Wuensch, Walter CERN AB ABP CERN. Geneva https://accelconf.web.cern.ch/e06/PAPERS/MOPLS128.PDF Published version from JACoW 9657 292222 http://cds.cern.ch/record/971774/files/ab-2006-031.pdf Fulltext Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060713 687798 858 edinburgh20060626 PUBLIC 002636047CER CLINOT ARTICLE ConferencePaper 971779 SzGeCERN 20241025033924.0 CLINOT ARTICLE ConferencePaper Sladen, Jonathan P H CERN CERN-AB-2006-032 CLIC CTF3 CERN ARTICLE JACoW T03 Beam Diagnostics and Instrumentation JACoW 06 Beam Instrumentation and Feedback Tjitske.Kehrer@cern.ch Very precise synchronization between main and drive beams is required in CLIC to avoid excessive luminosity loss due to energy variations. One possibility to accomplish this would be to measure and correct the drive beam phase. The timing reference for the correction could be the beam in the transfer line between the injector complex and the main linac. The timing of both main and drive beams will have to be measured to a precision in the region of 10 fs. The aim is to achieve this by means of a beam measurement at 30 GHz with the signal mixed down to an intermediate frequency (IF) for precise phase detection. The RF and IF electronics are being developed and tests will be carried out in CTF3 CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CERN CERN CLIC CERN CTF3 CERN linac CERN pick-up SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-09-13 17:00:42 CLIC-Note-679 Geneva CERN 13 Jul 2006 5 p Precision beam timing measurement system for CLIC synchronization oai:cds.cern.ch:971779 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7155999 Inspire 737933 2006 Andersson, A CERN AB RF https://accelconf.web.cern.ch/e06/PAPERS/TUPCH086.PDF Published version from JACoW 9658 253822 http://cds.cern.ch/record/971779/files/ab-2006-032.pdf Fulltext eng CERN Library CLIC-Note-0679 CERN Library AB-2006-032 13 20100901 1607 CER01 20060713 687798 1211 edinburgh20060626 PUBLIC 002636048CER 971781 SzGeCERN 20241025033925.0 CLINOT ARTICLE ConferencePaper Dubrovsky, A CERN Livesley, S CERN Marques-Balula, J CERN Mourier, J CERN Nonglaton, J M CERN Sladen, Jonathan P H CERN Deghaye, S CERN CERN-AB-2006-033 CLIC CTF3 CERN ARTICLE JACoW T06 Room Temperature RF JACoW 07 Accelerator Technology Tjitske.Kehrer@cern.ch The RF system of CTF3 (CLIC Test Facility 3) includes ten 35 MW to 40 MW 3 GHz klystrons and one 20 MW 1.5 GHz klystron. High power RF conditioning of the waveguide network and cavities connected to each klystron can be extremely time consuming. Because of this, a fully automatic conditioning system has been developed within a CERN JINR (Dubna) collaboration. It involves relatively minor hardware additions, most of the work being in application and front-end software. The system has already been used very successfully. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CERN CERN CTF3 CERN controls CERN klystron CERN vacuum SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-10-03 14:50:38 CLIC-Note-691 CTF3-Note-086 4 p Automatic conditioning of the CTF3 RF system oai:cds.cern.ch:971781 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161832 Inspire 737969 2006 Geneva CERN 13 Jul 2006 AB RF https://accelconf.web.cern.ch/e06/PAPERS/TUPCH144.PDF Published version from JACoW 9659 207497 http://cds.cern.ch/record/971781/files/ab-2006-033.pdf Fulltext eng CERN Library CLIC-Note-0691 CERN Library AB-2006-033 13 20100901 1607 CER01 20060713 687798 1355 edinburgh20060626 PUBLIC 002636050CER 971786 SzGeCERN 20241025033927.0 oai:cds.cern.ch:971786 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN Inspire 737970 CERN-AB-2006-034 eng CERN Library CLIC-Note-0692 CERN Library AB-2006-034 CLIC-Note-692 CTF3-Note-087 Syratchev, I V CERN Status of 30 GHz High Power RF Pulse Compressor for CTF3 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-10-03 14:52:27 A 70 ns 30 GHz pulse compressor with resonant delay lines has been built and installed in the CTF3 test area to obtain the high peak power of 150 MW necessary to demonstrate the full performance of the new CLIC accelerating structure. This pulse compressor will be commissioned at high power in 2006. Different methods to provide fast RF phase switching are discussed. The current status of the CTF3 RF pulse compressor commissioning and first results are presented CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN CTF3 CERN laser CERN linac CERN vacuum CERN ARTICLE CLIC CTF3 JACoW T08 RF Power Sources JACoW 07 Accelerator Technology AB RF https://accelconf.web.cern.ch/e06/PAPERS/TUPCH163.PDF Published version from JACoW 9660 137154 http://cds.cern.ch/record/971786/files/ab-2006-034.pdf Fulltext Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100301 1604 CER01 20060713 687798 1405 edinburgh20060626 PUBLIC 002636051CER CLINOT ARTICLE ConferencePaper 971788 SzGeCERN 20241024143122.0 oai:cds.cern.ch:971788 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161859 Inspire 737971 CERN-AB-2006-035 eng CERN Library CLIC-Note-0680 CERN Library AB-2006-035 CLIC-Note-680 Wuensch, Walter CERN A High-Gradient Test of a 30 GHz Molybdenum-Iris Structure 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-13 17:07:31 The CLIC study is actively investigating a number of different materials in an effort to find ways to increase achievable accelerating gradient. So far a series of rf tests have been made with a set of identical-geometry structures: a W-iris 30 GHz structure, a Mo-iris 30 GHz structure (with pulses as long as 16 ns) and a scaled Mo-iris X-band structure. A second Mo-iris 30 GHz structure of the same geometry has now been tested in CTF3 with pulse lengths up to 350 ns. The structure was conditioned to a gradient of 140 MV/m with a 70 ns pulse length and a breakdown rate slope of 13 MV/m per decade has been measured CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN CTF3 CERN diagnostics CERN electron CERN vacuum CERN ARTICLE CLIC CTF3 JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Aksakal, H Univ. Ankara, Turkey Braun, H CERN Carron, G CERN Corsini, R CERN Döbert, Steffen CERN Fandos, R CERN Grudiev, A CERN Jensen, E CERN Mete, Ö Univ. Ankara, Turkey Ramsvik, T CERN Rodríguez, José Alberto CERN Sladen, Jonathan P H CERN Syratchev, I V CERN Taborelli, M CERN Tecker, F A CERN Urschütz, Peter CERN Wilson, Ian H CERN AB RF CERN. Geneva https://accelconf.web.cern.ch/e06/PAPERS/MOPLS103.PDF Published version from JACoW 9661 725005 http://cds.cern.ch/record/971788/files/ab-2006-035.pdf Fulltext Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060713 687798 801 edinburgh20060626 PUBLIC 002636053CER CLINOT ARTICLE ConferencePaper 971790 SzGeCERN 20241025033928.0 CLINOT ARTICLE ConferencePaper Döbert, Steffen CERN CERN-AB-2006-036 CLIC CTF3 CERN ARTICLE JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Rumolo, G CERN Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Syratchev, I V CERN Carrillo, D CERN Madrid, CIEMAT Tjitske.Kehrer@cern.ch In CLIC, the rf power to accelerate the main beam is produced by decelerating a drive beam. The Test Beam Line (TBL) of the CLIC Test Facility (CTF3) is designed to study and validate the drive beam stability during deceleration. This is one of the R&D items required from the International Linear Collider Technical Review Committee to demonstrate feasibility of CLIC. It will produce 30 GHz rf power in the GW range and allow to benchmark computer codes used for the CLIC decelerator design. Different options of this experimental beam line are discussed CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN CTF3 CERN extraction CERN lattice CERN quadrupole SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-10-03 14:48:44 CLIC-Note-690 CTF3-Note-085 4 p oai:cds.cern.ch:971790 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7161867 Inspire 737972 2006 Geneva CERN 13 Jul 2006 AB RF https://accelconf.web.cern.ch/e06/PAPERS/MOPLS097.PDF Published version from JACoW 9662 165834 http://cds.cern.ch/record/971790/files/ab-2006-036.pdf Fulltext eng CERN Library CLIC-Note-0690 CERN Library AB-2006-036 Progress on the CTF3 Test Beam Line 13 20100901 1607 CER01 20060713 687798 783 edinburgh20060626 PUBLIC 002636054CER 971791 SzGeCERN 20240223163743.0 oai:cds.cern.ch:971791 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7171234 Inspire 738105 CERN-AB-2006-037 eng CERN Library AB-2006-037 Angoletta, Maria Elena Digital Low Level RF 2006 Geneva CERN 13 Jul 2006 6 p revised version submitted on 2006-08-17 15:36:06 The demand on high stability and precision on the RF voltage for modern accelerators, as well as better diagnostics, maintenance and flexibility is driving the community to develop Digital Low Level RF systems (DLLRF) for both linear accelerators and synchrotrons. The state of the art in digital technologies applied to DLLRF systems is reviewed; different designs developed or in development at various laboratories are surveyed. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN collider CERN controls CERN feedback CERN linac CERN ARTICLE XX XX JACoW T25 Low Level RF JACoW 07 Accelerator Technology AB RF http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-037 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/WEXPA03.PDF Published version from JACoW http://cds.cern.ch/record/971791/files/ab-2006-037.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060713 687798 1847 edinburgh20060626 PUBLIC 002636055CER ARTICLE ConferencePaper 971853 SzGeCERN 20241025033942.0 CLINOT ARTICLE ConferencePaper Assmann, R W CERN CERN-AB-2006-038 CLIC Not applicable CERN ARTICLE JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# Tjitske.Kehrer@cern.ch We present a new approach to machine protection and collimation in CLIC, separating these two functions: If emergency dumps in the linac protect the downstream beam line against drive-beam failures, the energy collimation only needs to clean the beam tails and can be compact. Overall, the length of the beam-delivery system (BDS) is significantly reduced. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN collimation CERN kicker CERN linac CERN luminosity SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-09-04 17:15:24 CLIC-Note-667 4 p Efficient Collimation and Machine Protection for the Compact Linear Collider oai:cds.cern.ch:971853 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7171242 Inspire 738106 2006 Geneva CERN 13 Jul 2006 AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS092.PDF Published version from JACoW 9664 232204 http://cds.cern.ch/record/971853/files/ab-2006-038.pdf Fulltext eng CERN Library CLIC-Note-0667 CERN Library AB-2006-038 13 20100901 1607 CER01 20060714 687798 768 edinburgh20060626 PUBLIC 002636194CER 971854 SzGeCERN 20240223163744.0 oai:cds.cern.ch:971854 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7171250 Inspire 738107 CERN-AB-2006-039 eng CERN Library AB-2006-039 CARE-Conf-06-031-HHH CARE-Conf-2006-031-HHH Benedetto, Elena AUTHOR|(CDS)2068441 #BEARD# Resonance Trapping, Halo Formation and Incoherent Emittance Growth due to Electron Cloud 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 17:01:40 The pinched electron cloud introduces a tune shift along the bunch, which, together with synchrotron motion, leads to a periodic crossing of resonances. The resonances are excited by the longitudinal distribution of the electron cloud around the storage ring. We benchmark the PIC code HEADTAIL against a simplified weak-strong tracking code based on an analytical field model, obtaining an excellent agreement. The simplified code is then used for exploring the long term evolution of the beam emittance, and for studying more realistic lattice models. Results are presented for the CERN SPS and the LHC. CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LHC CERN electron CERN emittance CERN resonance CERN simulation CERN ARTICLE XX XX JACoW D03 High Intensity - Incoherent Instabilities, Space Charge, Halos, Cooling JACoW 05 Beam Dynamics and Electromagnetic Fields Franchetti, Giuliano Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-039 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH018.PDF Published version from JACoW http://cds.cern.ch/record/971854/files/ab-2006-039.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN GSI, Germany n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2820 edinburgh20060626 PUBLIC 002636195CER ARTICLE ConferencePaper 971856 SzGeCERN 20240223163744.0 ARTICLE ConferencePaper 002636874CER01 1356555 1355362 CERN-AB-2006-040 EURISOL-12-22-2006-0006 EURISOL-12-23-2006-0007 XX XX CERN ARTICLE JACoW A14 Advanced Concepts JACoW 04 Hadron Accelerators Fabich, Adrian CERN AUTHOR|(CDS)2051223 #BEARD# Kirk, Markus GSI, Darmstadt Omet, Carsten GSI, Darmstadt Spiller, Peter J GSI, Darmstadt Tjitske.Kehrer@cern.ch michael.benedikt@cern.ch The beta-beam is based on the acceleration and storage of radioactive ions. Due to the large number of ions required and their relatively short lifetime, beam losses are a major concern. This paper estimates the decay losses for the part of the accelerator chain comprising the CERN PS and SPS machines. For illustration purposes, the power deposition in these accelerators is compared to that expected for nominal CNGS proton operation. The beam losses induced vacuum dynamics is simulated and the consequences for machine operation are discussed. CERN SPS CERN acceleration CERN ion CERN proton CERN vacuum SzGeCERN Accelerators and Storage Rings EURISOL 12: TASK 12 Task n 200629 a2006 revised version submitted on 2006-08-25 16:13:58 CERN-AB-2006-080 Benedikt, Michael CERN AUTHOR|(CDS)2108454 #BEARD# 4 p CERN Library AB-2006-040 oai:cds.cern.ch:971856 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923399 Inspire 727764 2006 Geneva CERN 13 Jul 2006 AB ABP CERN. Geneva OP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-040 Access to fulltext document http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-080 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS084.PDF Published version from JACoW http://cds.cern.ch/record/971856/files/ab-2006-040.pdf Access to fulltext document http://cds.cern.ch/record/971856/files/ab-2006-080.pdf Access to fulltext document eng Estimation of Decay Losses and Dynamic Vacuum for the Beta-beam Accelerator Chain 13 20100901 1607 CER01 20060714 687798 1696-1698 edinburgh20060626 PUBLIC 002636196CER FP6 515768 EURISOL DS openAccess CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 971857 SzGeCERN 20241025033944.0 CLINOT ARTICLE ConferencePaper Biscari, C CERN Buonomo, B CERN Corsini, R CERN Döbert, Steffen CERN Ghigo, A CERN Marcellini, F CERN Preger, B CERN Serio, M CERN Stella, A CERN Tecker, F A CERN Urschütz, Peter CERN CERN-AB-2006-041 CLIC CTF3 CERN ARTICLE JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Tjitske.Kehrer@cern.ch The CLIC Test Facility CTF3, built at CERN by an international collaboration, aims at demonstrating the linear collider by 2010. In particular, one of the main goals is to study the generation of high-current electron pulses by interleaving bunch trains in delay lines and rings using transverse RF deflectors. This will be done in the 42 m long delay loop, built under the responsibility of INFN/LNF, and the 84 m long combiner ring that will follow it. The delay loop installation was completed and its commissioning started at the end of 2005. In this paper the commissioning results are presented, including the first tests of beam recombination. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CERN CERN CLIC CERN CTF3 CERN linac CERN wiggler SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-10-03 11:57:13 CLIC-Note-675 CTF3-Note-073 Geneva CERN 13 Jul 2006 4 p Commissioning Status of the CTF3 Delay Loop oai:cds.cern.ch:971857 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN 2006 Alesini, D CERN AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS093.PDF Published version from JACoW 9668 306646 http://cds.cern.ch/record/971857/files/ab-2006-041.pdf Access to fulltext document eng CERN Library CLIC-Note-0675 CERN Library AB-2006-041 13 20100301 1604 CER01 20060714 687798 771 edinburgh20060626 PUBLIC 002636197CER 971860 SzGeCERN 20240223163744.0 oai:cds.cern.ch:971860 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924115 Inspire 727836 CERN-AB-2006-042 eng CERN Library AB-2006-042 Bruns, W CERN FAKTOR2 A Code to Simulate Collective Effects of Electrons and Ions 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 16:54:33 A new code for computing multiple effects of nonrelativistic charges is being developed. The basic method is electrostatic Particle in Cell. The underlying grid is rectangular and locally homogeneous. At regions of interest, eg. where the beam is, or near material boundaries, the mesh is refined recursively. The motion of the macroparticles is integrated with an adapted time step. Fast particles are treated with a smaller time step, and particles in regions of fine grids are also treated with a fine time step. The position of collision of particles with material boundaries are accurately resolved. Secondary particles are then created according to user specified yield functions. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CLIC CERN LEFT CERN electron CERN ion CERN simulation CERN ARTICLE XX XX JACoW D05 Code Developments and Simulation Techniques JACoW 05 Beam Dynamics and Electromagnetic Fields Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-042 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/WEPCH137.PDF Published version from JACoW http://cds.cern.ch/record/971860/files/ab-2006-042.pdf Access to fulltext document Tjitske.Kehrer@cern.ch bruns@gdfidl.de n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2242 edinburgh20060626 PUBLIC 002636199CER ARTICLE ConferencePaper 002734187CER01 971862 SzGeCERN 20240223163744.0 oai:cds.cern.ch:971862 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924107 Inspire 727835 CERN-AB-2006-043 eng CERN Library AB-2006-043 Dorda, U Simulations of long-range beam-beam interaction and wire compensation with BBTrack 2006 Geneva CERN 10 Jul 2006 4 p revised version submitted on 2006-08-21 16:53:18 We present weak-strong simulation results for the effect of long-range beam-beam (LR-BB) interaction in LHC as well as for proposed wire compensation schemes or wire experiments, respectively. In particular, we discuss details of the simulation model, instability indicators, the effectiveness of compensation, the difference between nominal and PACMAN bunches for the LHC, beam experiments, and wire tolerances. The simulations are performed with the new code BBTrack [1]. CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LHC CERN RHIC CERN emittance CERN luminosity CERN simulation CERN ARTICLE XX XX JACoW D05 Code Developments and Simulation Techniques JACoW 05 Beam Dynamics and Electromagnetic Fields Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-043 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/WEPCH138.PDF Published version from JACoW http://cds.cern.ch/record/971862/files/ab-2006-043.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2245 edinburgh20060626 PUBLIC 002636200CER ARTICLE ConferencePaper 971872 SzGeCERN 20241025033948.0 oai:cds.cern.ch:971872 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924093 Inspire 727834 CERN-AB-2006-044 eng CERN Library CLIC-Note-0669 CERN Library AB-2006-044 CLIC-Note-669 EUROTEV-REPORT-2006-039 Eliasson, Peder CERN Luminosity Tuning at the Interaction Point 2006 Geneva CERN 13 Jul 2006 3 p revised version submitted on 2006-09-05 10:56:04 Minimisation of the emittance in a linear collider is not enough to achieve optimal performance. For optimisation of the luminosity, tuning of collision parameters such as angle, offset, waist, etc. is needed, and a fast and reliable tuning signal is required. In this paper tuning knobs are presented, and their optimisation using beamstrahlung as a tuning signal is studied. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS EUROTeV2006 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN linac CERN luminosity CERN quadrupole CERN sextupole CERN simulation CERN ARTICLE EUROTeV CERN CLIC Not applicable JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Korostelev, M S CERN Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Tomás, R CERN Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS094.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-039.pdf Fulltext 9671 125982 http://cds.cern.ch/record/971872/files/ab-2006-044.pdf Fulltext 9672 263319 http://cds.cern.ch/record/971872/files/EUROTeV-Report-2006-039.pdf Fulltext Tjitske.Kehrer@cern.ch peder.eliasson@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 774 edinburgh20060626 PUBLIC 002636201CER CLINOT ARTICLE ConferencePaper 002635536CER01 971875 SzGeCERN 20240223163744.0 oai:cds.cern.ch:971875 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924085 Inspire 727833 CERN-AB-2006-045 eng CERN Library AB-2006-045 Giovannozzi, Massimo CERN AUTHOR|(CDS)2051254 #BEARD# Implementation of the proposed multi-turn extraction at the CERN Proton Synchrotron 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 16:44:08 Following the positive results of the three-year measurement campaign at the CERN Proton Synchrotron, concerning beam splitting with stable islands in the transverse phase space, a study of a possible implementation of the proposed Multi-Turn Extraction (MTE) was undertaken. The novel approach would allow a substantial reduction of beam losses, with respect to the present scheme, when delivering the high-intensity proton beams required for the planned CERN Neutrino to Gran Sasso Project (CNGS). Major modifications to the ring layout are foreseen, such as a new design of the extraction bumps including also the installation of three additional kickers to create a closed-bump over the five turns used to extract the split beam. The ring aperture was reviewed and improvements proposed to reduce possible beam losses during beam splitting and extraction. The goal consists of implementing the proposed changes by the end of the 2007/2008 PS shutdown and to commission the novel extraction during the 2008 physics run. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN SPS CERN beam-losses CERN extraction CERN kicker CERN septum CERN ARTICLE XX XX JACoW T12 Beam Injection/Extraction and Transport JACoW 04 Hadron Accelerators AB ABP https://accelconf.web.cern.ch/e06/PAPERS/TUPLS122.PDF Published version from JACoW http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-045 Access to fulltext document http://cds.cern.ch/record/971875/files/ab-2006-045.pdf Access to fulltext document massimo.giovannozzi@cern.ch Tjitske.Kehrer@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 1789 edinburgh20060626 PUBLIC 002636202CER ARTICLE ConferencePaper 002734069CER01 971876 SzGeCERN 20240223163745.0 oai:cds.cern.ch:971876 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924077 Inspire 727832 CERN-AB-2006-046 eng CERN Library AB-2006-046 Jowett, John M Measurement of Ion Beam Losses due to Bound-Free Pair Production in RHIC 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 16:40:18 When the LHC operates as a Pb82+ ion collider, losses of Pb81+ ions, created through Bound-free Pair Production at the collision point, and localized in cold magnets, are expected to be a major luminosity limit. With Au79+ ions at RHIC, this effect is not a limitation because the Au78+ production rate is low, and the Au78+ beam produced is inside the momentum aperture. When RHIC collided Cu29+ ions, secondary beam production rates were lower still but the Cu28+ ions produced were predicted to be lost at a well-defined location, creating the opportunity for the first direct observation of BFPP effects in an ion collider. We report on measurements of localized beam losses due to BFPP with copper beams in RHIC and comparisons to predictions from tracking and Monte Carlo simulation. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LHC CERN RHIC CERN ion CERN luminosity CERN simulation CERN ARTICLE XX XX JACoW A01 Hadron Colliders JACoW 01 Circular Colliders Bruce, R AUTHOR|(CDS)2068843 #BEARD# Drees, A Fischer, W Gilardoni, S S CERN Klein, S Tepikian, S AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-046 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/MOPLS010.PDF Published version from JACoW http://cds.cern.ch/record/971876/files/ab-2006-046.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN BNL, Upton, NY, USA, LBNL, Berkeley n 200628 a2006 13 20100901 1607 CER01 20060714 687798 553 edinburgh20060626 PUBLIC 002636203CER ARTICLE ConferencePaper 971878 SzGeCERN 20240223163745.0 oai:cds.cern.ch:971878 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 7401922 CERN-AB-2006-047 eng CERN Library AB-2006-047 Keil, Eberhard CERN Hadron cancer therapy complex employing non-scaling FFAG accelerator and fixed field gantry design 2007 Geneva CERN 13 Jun 2007 4 p revised version submitted on 2006-08-21 15:35:24 Non-scaling FFAG rings for cancer hadron therapy offer reduced physical aperture and large dynamic aperture as compared with scaling FFAGs. The variation of tune with energy implies the crossing of resonances during acceleration. Our design avoids intrinsic resonances, although imperfection resonances must be, and can be, crossed. We consider a system of three non-scaling FFAG rings for cancer therapy with 250 MeV protons and 400 MeV/u carbon ions. Hadrons are accelerated in a common RFQ and linear accelerator, and injected into the FFAG rings at .. .. . H+/C6+ ions are accelerated in the two smaller/larger rings to 31 and 250 MeV/68.8 and 400 MeV/u kinetic energy, respectively. The lattices consist of doublet cells with a straight section for RF cavities. The gantry with triplet cells accepts the whole required momentum range at fixed field. This unique design uses either high temperature super-conductors or super-conducting magnets reducing gantry size and weight. Elements with variable field at beginning and at end set the extracted beam at the correct position for a range of energies. CC-BY-3.0 Publication CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN acceleration CERN extraction CERN kicker CERN proton CERN resonance CERN ARTICLE XX XX JACoW A12 FFAG, Cyclotrons JACoW 04 Hadron Accelerators Sessler, Andrew M Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA Trbojevic, D Brookhaven National Laboratory, Upton, New York 11973, USA AB ABP 054701 Phys. Rev. Spec. Top. Accel. Beams 10 2007 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=aps&id=PhysRevSTAB.10.054701-1 APS Published version, local copy http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-047 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS079.PDF Published version from JACoW http://cds.cern.ch/record/971878/files/PhysRevSTAB.10.054701-1.pdf APS Published version, local copy http://cds.cern.ch/record/971878/files/ab-2006-047.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN LBNL, Berkeley BNL, Upton, New York n 200628 13 20100901 1607 CER01 20060714 687798 1681 edinburgh20060626 PUBLIC 002636204CER ARTICLE ConferencePaper 971879 SzGeCERN 20241025033952.0 oai:cds.cern.ch:971879 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924050 Inspire 727830 CERN-AB-2006-048 eng CERN Library CLIC-Note-0665 CERN Library AB-2006-048 CLIC-Note-665 EUROTEV-REPORT-2006-030 Latina, Andrea CERN AUTHOR|(CDS)2068659 #BEARD# Recent Improvements of PLACET 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-04 17:12:14 PLACET[1] is a program used to simulate the dynamics, including wakefields, of a beam in the main accelerating or decelerating part of a linac. It allows for the investigation of single- and multi-bunch effects, the simulation of normal RF cavities with relatively low group velocities, as well as transfer structures specific to CLIC. Recent improvements, including the possibility to simulate bunch compressors, ground motion, and the use of parallel computer systems, are presented in this paper. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS EUROTeV2006 CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN ground-motion CERN linac CERN luminosity CERN simulation CERN ARTICLE EUROTeV CLIC Not applicable JACoW D05 Code Developments and Simulation Techniques JACoW 05 Beam Dynamics and Electromagnetic Fields Burkhardt, Helmut CERN Eliasson, Peder CERN Neukermans, Helmut CERN Resta-López, Javier IFIC, Valencia Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Tomás, Daniel CERN AB ABP https://accelconf.web.cern.ch/e06/PAPERS/WEPCH140.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-030.pdf Fulltext 9677 330011 http://cds.cern.ch/record/971879/files/ab-2006-048.pdf Fulltext 9678 218739 http://cds.cern.ch/record/971879/files/EUROTeV-Report-2006-030.pdf Fulltext Tjitske.Kehrer@cern.ch andrea.latina@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2251 edinburgh20060626 PUBLIC 002636206CER CLINOT ARTICLE ConferencePaper 002635527CER01 971881 SzGeCERN 20241025033952.0 oai:cds.cern.ch:971881 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924042 Inspire 727829 CERN-AB-2006-049 eng CERN Library CLIC-Note-0666 CERN Library AB-2006-049 CLIC-Note-666 EUROTEV-REPORT-2006-031 Latina, Andrea CERN AUTHOR|(CDS)2068659 #BEARD# Implications of a Curved Tunnel for the Main Linac of CLIC 2006 Geneva CERN 13 Jun 2006 3 p revised version submitted on 2006-09-04 17:13:51 Preliminary studies of a linac that follows the earth curvature are presented for the CLIC main linac. The curvature of the tunnel is modeled in a realistic way by use of geometry changing elements. The emittance preservation is studied for a perfect machine as well as taking into account imperfections. Results for a curved linac are compared with those for a laser-straight machine. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS EUROTeV2006 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN emittance CERN laser CERN linac CERN quadrupole EUROTeV CERN ARTICLE CLIC Not applicable JACoW A08 Linear Accelerators JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Eliasson, Peder CERN Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS130.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-031.pdf Fulltext 9679 159509 http://cds.cern.ch/record/971881/files/EUROTeV-Report-2006-031.pdf Fulltext 9680 252808 http://cds.cern.ch/record/971881/files/ab-2006-049.pdf Access to fulltext document Tjitske.Kehrer@cern.ch andrea.latina@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 864 edinburgh20060626 PUBLIC 002636208CER CLINOT ARTICLE ConferencePaper 002635528CER01 971883 SzGeCERN 20240223163745.0 ARTICLE ConferencePaper 002734039CER01 1356557 Simonsson, Ansgar Siegbahn Inst. Phys., Stockholm Lindroos, Mats CERN Källberg, Anders Siegbahn Inst. Phys., Stockholm CERN-AB-2006-050 EURISOL-12-23-2006-0006 XX XX CERN ARTICLE JACoW A14 Advanced Concepts JACoW 04 Hadron Accelerators Tjitske.Kehrer@cern.ch kallberg@msi.se The EU supported EURISOL Design Study encompasses a beta-beam facility for neutrino physics. Intense electron (anti-)neutrino beams are in such a machine generated through the decay of radioactive ions in a high energy storage ring. The two main candidate isotopes for the generation of a neutrino and an antineutrino beam are 6He and 18Ne. The intensities required are hard to reach, in particular for the neon case. A possible solution to increase the intensity is to use an accumulator ring with an electron cooler. Critical parameters such as cooling times and current limitations due to space charge and tune shifts are presently being optimized. We will in this presentation give an overview of the low energy accumulation stage and review recent work on this option. CERN SPS CERN accumulation CERN electron CERN injection CERN ion SzGeCERN Accelerators and Storage Rings EURISOL 12: TASK 12 Task n 200628 a2006 revised version submitted on 2006-08-28 17:27:29 4 p CERN Library AB-2006-050 oai:cds.cern.ch:971883 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924034 Inspire 727828 2006 Geneva CERN 13 Jul 2006 AB ABP CERN. Geneva http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-050 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS083.PDF Published version from JACoW http://cds.cern.ch/record/971883/files/ab-2006-050.pdf Access to fulltext document eng A low energy accumulation stage for a beta-beam facility 13 20100901 1607 CER01 20060714 687798 1693 edinburgh20060626 PUBLIC 002636209CER FP6 515768 EURISOL DS openAccess CC-BY publication JACoW SIS EPAC06-2007 SIS:200801 PR/LKR added CERN EDS CERN-AB CLAS1 971884 SzGeCERN 20240223163746.0 oai:cds.cern.ch:971884 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924026 Inspire 727827 CERN-AB-2006-051 eng CERN Library AB-2006-051 Métral, Elias CERN Kicker impedance measurements for the future multiturn extraction of the CERN Proton Synchrotron 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 15:20:24 In the context of the novel multi-turn extraction, where charged particles are trapped into stable islands in transverse phase space, the ejection of five beamlets will be performed by means of a set of three new kickers. Before installing them into the machine, a measurement campaign has been launched to evaluate the impedance of such devices. Two measurement techniques were used to try to disentangle the driving and detuning impedances. The first consists in measuring the longitudinal impedance for different transverse offsets using a single displaced wire. The sum of the transverse driving and detuning impedances is then deduced applying Panofsky- Wenzel theorem. The second uses two wires excited in opposite phase and yields the driving transverse impedance only. Finally, the consequences on the beam dynamics are also analyzed. CC-BY publication JACoW SIS:200801 PR/LKR added SIS EPAC06-2007 CERN EDS CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LEFT CERN extraction CERN impedance CERN kicker CERN resonance CERN ARTICLE XX XX JACoW D04 Instabilities - Processes, Impedances, Countermeasures JACoW 05 Beam Dynamics and Electromagnetic Fields Caspers, Friedhelm CERN Giovannozzi, Massimo CERN AUTHOR|(CDS)2051254 #BEARD# Grudiev, Alexei CERN Kroyer, Tom CERN Sermeus, Luc CERN AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-051 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH059.PDF Published version from JACoW http://cds.cern.ch/record/971884/files/ab-2006-051.pdf Access to fulltext document Tjitske.Kehrer@cern.ch elias.metral@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2919 edinburgh20060626 PUBLIC 002636210CER ARTICLE ConferencePaper 002734375CER01 971886 SzGeCERN 20240223163746.0 oai:cds.cern.ch:971886 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924018 Inspire 727826 CERN-AB-2006-052 eng CERN Library AB-2006-052 Métral, Elias CERN Simulation study on the beneficial effect of linear coupling for the transverse mode-coupling instability in the CERN Super Proton Synchrotron 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-28 17:20:26 The intensity threshold of the transverse mode-coupling instability in a flat vertical chamber, as in the CERN Super Proton Synchrotron, is much higher in the horizontal plane than in the vertical one. This asymmetry between the transverse planes led us to the idea that linear coupling from skew quadrupoles could be used to increase the intensity threshold. This technique is already applied, for instance, in the CERN Proton Synchrotron, where a slow head-tail horizontal instability due to the resistive-wall impedance is stabilized by linear coupling only, i.e. with neither octupoles nor feedbacks. This paper presents the results of the study of the effect of linear coupling on the transverse mode-coupling instability, using the HEADTAIL simulation code. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN SPS CERN coupling CERN impedance CERN simulation CERN ARTICLE XX XX JACoW D04 Instabilities - Processes, Impedances, Countermeasures JACoW 05 Beam Dynamics and Electromagnetic Fields Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-052 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH058.PDF Published version from JACoW http://cds.cern.ch/record/971886/files/ab-2006-052.pdf Access to fulltext document Tjitske.Kehrer@cern.ch elias.metral@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2916 edinburgh20060626 PUBLIC 002636211CER ARTICLE ConferencePaper 002734374CER01 971887 SzGeCERN 20240223163746.0 oai:cds.cern.ch:971887 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6924000 Inspire 727825 CERN-AB-2006-053 eng CERN Library AB-2006-053 Métral, Elias CERN The Fast Vertical Single-Bunch Instability after Injection into the CERN Super Proton Synchrotron 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 15:14:46 Since 2003, high-intensity single-bunch proton beams with low longitudinal emittance have been affected by heavy losses after less than one synchrotron period after injection. The effects of the resonance frequency of the responsible impedance, longitudinal emittance and chromaticity on the intensity threshold were already discussed in detail in 2004, comparing analytical predictions with simulation results. In this paper the evolution of the instability between injection and the time of beam loss is our main concern. Measurements are compared with HEADTAIL simulations. A travellingwave pattern propagating along the bunch, which is the signature of a Beam Break-Up or Transverse Mode Coupling Instability (TMCI), is clearly identified. The oscillating frequency, near ~1 GHz, is in good agreement with the usual broad-band impedance model deduced from beam-based measurements like the head-tail growth rate vs. chromaticity. CC-BY publication JACoW SIS:200801 PR/LKR added SIS EPAC06-2007 CERN EDS CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LHC CERN SPS CERN emittance CERN impedance CERN simulation CERN ARTICLE XX XX JACoW D04 Instabilities - Processes, Impedances, Countermeasures JACoW 05 Beam Dynamics and Electromagnetic Fields Arduini, Gianluigi CERN AUTHOR|(CDS)2051255 #BEARD# Bohl, Thomas CERN Burkhardt, Helmut CERN Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Spataro, Bruno INFN/LNF Frascati AB ABP CERN. Geneva http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-053 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH057.PDF Published version from JACoW http://cds.cern.ch/record/971887/files/ab-2006-053.pdf Access to fulltext document Tjitske.Kehrer@cern.ch elias.metral@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2913 edinburgh20060626 PUBLIC 002636213CER ARTICLE ConferencePaper 002734373CER01 971889 SzGeCERN 20241025033953.0 CLINOT ARTICLE ConferencePaper Neukermans, L CERN Resta-López, J CERN Burkhardt, H CERN CERN-AB-2006-054 CLIC Not applicable CERN ARTICLE JACoW D03 High Intensity - Incoherent Instabilities, Space Charge, Halos, Cooling JACoW 05 Beam Dynamics and Electromagnetic Fields Tjitske.Kehrer@cern.ch Halo particles in linear colliders can result in significant losses and serious background which may reduce the overall performances. We present a study of various halo generation processes with numerical estimates. The aim is to allow to predict and minimize the halo throughout the accelerator chain including the final focus up to the experimental detectors. We include estimates for the planned CLIC beam line. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN collimation CERN linac CERN scattering CERN simulation SzGeCERN Accelerators and Storage Rings n 200628 a2006 revised version submitted on 2006-09-05 10:58:14 CLIC-Note-668 4 p Halo and Tail Generation Studies for Linear Colliders oai:cds.cern.ch:971889 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923992 Inspire 727824 2006 Geneva CERN 13 Jul 2006 AB ABP https://accelconf.web.cern.ch/e06/PAPERS/THPCH019.PDF Published version from JACoW 9685 347749 http://cds.cern.ch/record/971889/files/ab-2006-054.pdf Fulltext eng CERN Library CLIC-Note-0668 CERN Library AB-2006-054 13 20100901 1607 CER01 20060714 687798 2823 edinburgh20060626 PUBLIC 002636214CER 971892 20121219101530.0 oai:cds.cern.ch:971892 http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-055 Access to fulltext document http://www.JACoW.org/e06/PAPERS/TUPLS129.PDF Published version from JACoW http://cds.cern.ch/record/971892/files/ab-2006-055.pdf Access to fulltext document DELETED 1355060 971894 SzGeCERN 20240223163746.0 oai:cds.cern.ch:971894 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923976 Inspire 727822 CERN-AB-2006-056 eng CERN Library AB-2006-056 Sarchiapone, L Expected signal for the TBID and the ionization chambers downstream of the CNGS target station 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-28 17:10:56 Downstream of the carbon graphite target of the CNGS (CERN Neutrinos to Gran Sasso) facility at CERN a secondary emission monitor called TBID (Target Beam Instrumentation Downstream) is installed to measure the multiplicities and the left/right as well as up/down asymmetries of secondary particles from the target. Calculations show that the titanium windows used to close off the TBID vacuum tank might not withstand the highest beam intensities with small spot sizes expected at CNGS, in case the proton beam accidentally misses the 4-5 mm diameter target rods. Therefore it has been suggested to place two ionisation chambers as a backup for the TBID, located left and right of the TBID monitor. Monte Carlo simulations with the particle transport code FLUKA were performed firstly to obtain the fluence of charged particles in the region of interest and secondly to estimate the induced radioactivity (background signal) in this area. This allows to assess the actual signal/noise situation and thus to determine the optimal position of the ionisation chambers. This paper presents the results of these calculations. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN LEFT CERN instrumentation CERN proton CERN secondary-beams CERN target CERN ARTICLE XX XX JACoW T03 Beam Diagnostics and Instrumentation JACoW 06 Beam Instrumentation and Feedback Ferrari, A Gschwendtner, E Lorenzo-Sentis, M AB ATB http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-056 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPCH084.PDF Published version from JACoW http://cds.cern.ch/record/971894/files/ab-2006-056.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060714 687798 1208 edinburgh20060626 PUBLIC 002636216CER ARTICLE ConferencePaper 971897 SzGeCERN 20240223163746.0 oai:cds.cern.ch:971897 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923968 Inspire 727821 CERN-AB-2006-057 eng CERN Library AB-2006-057 Roncarolo, F Design and Validation with Measurements of the LEIR Injection Line 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 14:37:02 The CERN Low Energy Ion Ring (LEIR) commissioning started in the year 2005. O4+and Pb54+ion beams are transferred at 4.2 MeV/nucleon from Linac 3 to LEIR through a low energy transfer line, for which the constraints and the resulting optics design are presented. First trajectory and dispersion measurements agreed only poorly with the theoretical model. Iterations of a refined optics model and further measurements improved the agreement between experimental observations and expectations. In particular, the effect of quadrupole errors in the line dipole magnets is discussed. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN dipole CERN ion CERN linac CERN optics CERN quadrupole CERN ARTICLE XX XX JACoW D01 Beam Optics - Lattices, Correction Schemes, Transport JACoW 05 Beam Dynamics and Electromagnetic Fields Carli, C Chanel, M Dumas, L Scrivens, R AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-057 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/WEPCH046.PDF Published version from JACoW http://cds.cern.ch/record/971897/files/ab-2006-057.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060714 687798 2020 edinburgh20060626 PUBLIC 002636217CER ARTICLE ConferencePaper 971898 SzGeCERN 20241025033957.0 oai:cds.cern.ch:971898 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923950 Inspire 727820 CERN-AB-2006-058 eng CERN Library CLIC-Note-0671 CERN Library AB-2006-058 CLIC-Note-671 EUROTEV-REPORT-2006-026 Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Effects of Wake Fields in the CLIC BDS 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-05 11:00:12 The wake fields due to collimators in the Beam Delivery System of CLIC are modeled using a conventional approach. According to the chosen ranges of parameters, differences in the transverse kicks due to both the geometric and resistive wall components for different regimes are highlighted (inductive or diffractive for the geometric wake fields, short- or long-range, ac or dc for the resistive wall wake fields). A module for particle tracking along the BDS including the effect of wake fields has been implemented in PLACET and first tracking results are shown. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS EUROTeV2006 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN betatron CERN emittance CERN luminosity CERN quadrupole EUROTeV ARTICLE CERN CLIC Not applicable JACoW A03 Linear Colliders Latina, Andrea CERN AUTHOR|(CDS)2068659 #BEARD# Schulte, Daniel AUTHOR|(CDS)2067943 #BEARD# CERN AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS096.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-026.pdf Fulltext 9690 857305 http://cds.cern.ch/record/971898/files/EUROTeV-Report-2006-026.pdf Fulltext 9691 928336 http://cds.cern.ch/record/971898/files/ab-2006-058.pdf Fulltext Tjitske.Kehrer@cern.ch giovanni.rumolo@cern.ch n 200628 a2006 13 20100901 1607 CER01 20060714 687798 780 edinburgh20060626 PUBLIC 002636218CER CLINOT ARTICLE ConferencePaper 002635523CER01 971901 SzGeCERN 20240223163801.0 oai:cds.cern.ch:971901 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923933 Inspire 727818 CERN-AB-2006-059 eng CERN Library AB-2006-059 Sarchiapone, L Estimation of the energy deposited on the CNGS magnetic horn and reflector 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-24 12:13:52 In the CNGS (Cern Neutrino to Gran Sasso) installation two magnetic lenses, namely the horn and the reflector, focus the secondary beam generated in the target station. The gap between the horn and reflector is chosen to optimize a wide-band high-energy muon-neutrino beam. These two focusing elements are two coaxial lenses: the outer conductor has a cylindrical shape whereas the inner conductor consists of a sequence of conical shapes to optimize the focusing capacity. The evaluation of the heat load on the support structures is crucial since modifications in the elements around the horn and reflector are under way and the support structures can be adapted to the heat load found. Furthermore, the heat load in the whole horn area has been evaluated to optimize the cooling-ventilation system. The energy deposited on the horn and reflector as well as on their adjacent elements has been estimated using the FLUKA Monte Carlo package and results are presented in this paper. The FLUKA geometry input of the horn and reflector electrical connections has been notably improved in order to accommodate the detailed striplines design to the thermal expansion. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN focusing CERN secondary-beams CERN shielding CERN simulation CERN target CERN ARTICLE XX XX JACoW T19 Collimation and Targetry JACoW 04 Hadron Accelerators Ferrari, A Lorenzo-Sentis, M AB ATB http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-059 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS132.PDF Published version from JACoW http://cds.cern.ch/record/971901/files/ab-2006-059.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200628 a2006 13 20100901 1607 CER01 20060714 687798 1813 edinburgh20060626 PUBLIC 002636219CER ARTICLE ConferencePaper 972413 SzGeCERN 20240223163806.0 oai:cds.cern.ch:972413 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923666 Inspire 727791 CERN-AT-2006-007-MAS eng Scandale, Walter AUTHOR|(CDS)2107593 #BEARD# First observation of proton reflection from bent crystals 2006 Geneva CERN 13 Jul 2006 4 p We recently suggested using short bent crystals as primary collimators in a two stage cleaning system for hadron colliders, with the aim of providing larger impact parameters in the secondary bulk absorber, through coherent beam-halo deflection [1]. Tests with crystals a few mm long, performed with 70 GeV proton beams at IEHP in Protvino, showed a channeling efficiency exceeding 85 %. We also observed disturbing phenomena such as dechannelling at large impact angle, insufficient bending induced by volume capture inside the crystal, multiple scattering of non-channeled protons and, for the first time, a proton flux reflected by the crystalline planes. Indeed, protons with a tangent path to the curved planes somewhere inside the crystal itself are deflected in the opposite direction with respect to the channeled particles, with an angle almost twice as large as the critical angle. This effect, up to now only predicted by computer simulations [2], produces a flux of particles in the wrong direction with respect to the absorber, which may hamper the collimation efficiency if neglected. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN collimation CERN lattice CERN proton CERN scattering CERN ARTICLE XX XX JACoW T19 Collimation and Targetry JACoW 01 Circular Colliders Ivanov, Yu M Petrunin, A Skorobogatov, V V Gavrikov, Yu A Zhelamkov, A V Lapina, L P Schetkovsky, A I Chesnokov, Yu A Baranov, V I Baranov, V T Chepegin, V N Guidi, V Vomiero, A AT http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=at-2006-007 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/TUPLS021.PDF Published version from JACoW http://cds.cern.ch/record/972413/files/at-2006-007.pdf Access to fulltext document Tjitske.Kehrer@cern.ch evelyne.delucinge@cern.ch CERN PNPI Leningrad IHEP Protvino University of Ferrara LNL, INFN Legnaro n 200629 a2006 13 20100901 1607 CER01 20060717 687798 1535 edinburgh20060626 PUBLIC 002636314CER ARTICLE ConferencePaper 002641529CER01 972419 SzGeCERN 20240223163806.0 oai:cds.cern.ch:972419 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6776876 Inspire 720289 CERN-AB-2006-061 eng CERN Library AB-2006-061 Alexahin, Yu I Measurement and correction of the 3rd order resonance in the Tevatron 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 14:17:40 At Fermilab Tevatron BPM system has been recently upgraded resulting in much better accuracy of beam position measurements and improvements of data acquisition for turn-by-turn measurements. That allows one to record the beam position at each turn for 8000 turns for all BPMs (118 in each plane) with accuracy of about 10-20 ìm. In the last decade a harmonic analysis tool has been developed at CERN that allows relating each FFT line derived from the BPM data with a particular non-linear resonance in the machine. In fact, one can even detect the longitudinal position of the sources of these resonances. Experiments have been performed at the Tevatron in which beams have been kicked to various amplitudes to analyze the 3rd order resonance. It was possible to address this rather large resonance to some regular machine sextupoles. An alternative sextupole scheme allowed the suppression of this resonance by a good factor of 2. Lastly, the experimental data are compared with model calculations. CC-BY publication JACoW CERN EDS EPAC 2006 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN coupling CERN dipole CERN resonance CERN sextupole CERN ARTICLE XX XX JACoW D02 Non-linear Dynamics - Resonances, Tracking, Higher Order JACoW 05 Beam Dynamics and Electromagnetic Fields Lebedev, V Schmidt, F Still, D Valishev, A AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-061 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/WEPCH096.PDF Published version from JACoW http://cds.cern.ch/record/972419/files/ab-2006-061.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN Fermilab, Batavia, USA n 200629 a2006 13 20100901 1607 CER01 20060717 687798 2140 edinburgh20060626 PUBLIC 002636320CER ARTICLE ConferencePaper 972420 SzGeCERN 20240223163806.0 oai:cds.cern.ch:972420 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6915183 Inspire 727017 CERN-AB-2006-062 eng CERN Library AB-2006-062 Forest, Etienne KEK, Ibaraki MAD-X/PTC lattice design for DAPHNE at Frascati 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 14:15:25 In absence of a program that takes as an input the desired or known location of the magnets in the tunnel, accelerator designers have been using MAD that looks at a ring as a sequence of magnets without a connection to the tunnel. In many simple examples that is just fine, but once more complicated structures are treated one is bound to play tricks with MAD. Here PTC comes to the rescue. It is shown how pieces of this machine that exist in MADX format are used in PTC to create this double ring, as found on the accelerator floor, with a proper survey in the forward and backward direction. Special elements have been implemented in MAD-X to allow the full PTC description of the machine. CC-BY publication JACoW SIS EPAC06-2007 SIS:200801 PR/LKR added CERN EDS CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN collider CERN emittance CERN lattice CERN luminosity CERN survey CERN ARTICLE XX XX JACoW A02 Lepton Colliders JACoW 01 Circular Colliders Milardi, Catia INFN/LNF, Frascati Schmidt, Frank CERN AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-062 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/MOPLS041.PDF Published version from JACoW http://cds.cern.ch/record/972420/files/ab-2006-062.pdf Access to fulltext document Tjitske.Kehrer@cern.ch frank.schmidt@cern.ch n 200629 a2006 13 20100901 1607 CER01 20060717 687798 631 edinburgh20060626 PUBLIC 002636321CER ARTICLE ConferencePaper 002733775CER01 972422 SzGeCERN 20240223163807.0 oai:cds.cern.ch:972422 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923623 Inspire 727787 CERN-AB-2006-064 eng CERN Library AB-2006-064 EUROTEV-REPORT-2006-040 Eliasson, Peder CERN A Study of Failure Modes in the ILC Main Linac 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 14:05:31 Failures in the ILC can lead to beam loss or even damage the machine. In the paper quadrupole failures and errors in the klystron phase are being investigated and the impact on the machine protection is being considered for the main linac. CC-BY publication JACoW SIS EUROTeV2006 CERN EDS SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN klystron CERN lattice CERN linac CERN quadrupole CERN simulation EUROTeV CERN ARTICLE ILC Not applicable JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Elsen, Eckhard DESY Krücker, Dirk DESY Latina, Andrea CERN AUTHOR|(CDS)2068659 #BEARD# Poirier, Freddy DESY Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Walker, Nicholas John DESY Xia, Guoxing DESY AB ABP http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-040.pdf Fulltext http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-064 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/MOPLS099.PDF Published version from JACoW http://cds.cern.ch/record/972422/files/EUROTeV-Report-2006-040.pdf Fulltext http://cds.cern.ch/record/972422/files/ab-2006-064.pdf Access to fulltext document Tjitske.Kehrer@cern.ch daniel.schulte@cern.ch n 200629 a2006 13 20100901 1607 CER01 20060717 687798 789 edinburgh20060626 PUBLIC 002636323CER ARTICLE ConferencePaper 002635537CER01 972423 SzGeCERN 20240223163807.0 oai:cds.cern.ch:972423 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923615 Inspire 727786 CERN-AB-2006-065 eng CERN Library AB-2006-065 Burnet, Jean Paul CERN Proton Synchrotron working point control using an improved version of the pole-face-windings and figure-of-eight loop powering 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-28 16:05:02 The working point of the CERN Proton Synchrotron, which is equipped with combined function magnets, is controlled using pole-face-windings. Each main magnet consists of one focusing and one de-focusing half-unit on which four pole-face-winding plates are mounted containing two separate coils each, called narrow and wide. At present they are connected in series, but can be powered independently. In addition, a winding called the figure-of-eight loop, contours the pole faces and crosses between the two half units, generating opposite fields in each half-unit. The four optical parameters, horizontal and vertical tune and chromaticity, are adjusted by acting on the pole-face-winding currents in both half units and in the figure-of-eight loop, leaving one physical quantity free. The power supply consolidation project opened the opportunity to use five independent power supplies, to adjust the four parameters plus an additional degree of freedom. This paper presents the results of the measurements that have been made in the five-current mode together with the influence of the magnetic nonlinearities, due to the unbalance in the narrow and wide winding currents, on the beam dynamics. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN controls CERN injection CERN power-supply CERN synchrotron CERN ARTICLE XX XX JACoW A04 Circular Accelerators JACoW 04 Hadron Accelerators Giovannozzi, Massimo AUTHOR|(CDS)2051254 #BEARD# Métral, E Michels, O Steerenberg, R Vandorpe, B AB OP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-065 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/MOPCH097.PDF Published version from JACoW http://cds.cern.ch/record/972423/files/ab-2006-065.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200629 a2006 13 20100901 1607 CER01 20060717 687798 264 edinburgh20060626 PUBLIC 002636324CER ARTICLE ConferencePaper 972424 SzGeCERN 20241025034302.0 oai:cds.cern.ch:972424 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923607 Inspire 727785 CERN-AB-2006-066 eng CERN Library CLIC-Note-0670 CERN Library AB-2006-066 CLIC-Note-670 EUROTEV-REPORT-2006-027 Tomás, R CERN CLIC Final Focus Studies 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-05 11:02:03 The CLIC final focus system has been designed based on the local compensation scheme proposed by P. Raimondi and A. Seryi. However, there exist important chromatic aberrations that deteriorate the performance of the system. This paper studies the optimization of the final focus based on the computation of the higher orders of the map using MAD-X and PTC. The use of octupole tail folding to reduce the size of the halo in the locations with aperture limitations is also discussed. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS EUROTeV2006 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN luminosity CERN octupole CERN quadrupole CERN sextupole CERN ARTICLE EUROTeV CLIC Not applicable JACoW A03 Linear Colliders Braun, Hans-Heinrich CERN Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS100.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/EUROTeV/Report/EUROTeV-Report-2006-027.pdf Fulltext 9711 234747 http://cds.cern.ch/record/972424/files/ab-2006-066.pdf Fulltext 9712 145610 http://cds.cern.ch/record/972424/files/EUROTeV-Report-2006-027.pdf Fulltext Tjitske.Kehrer@cern.ch frogelio.tomas@cern.ch n 200629 a2006 13 20100901 1607 CER01 20060717 687798 792 edinburgh20060626 PUBLIC 002636325CER CLINOT ARTICLE ConferencePaper 002635524CER01 972321 SzGeCERN 20241025034219.0 CLINOT ARTICLE ConferencePaper Braun, Hans Heinrich CERN Carron, G CERN Corsini, R CERN Döbert, Steffen CERN Lefèvre, T CERN McMonagle, G CERN Mourier, J CERN Sladen, Jonathan P H CERN Tecker, F A CERN Thorndahl, L CERN Welsch, C CERN Urschütz, Peter CERN CERN-AB-2006-067 CLIC CTF3 CERN ARTICLE JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Tjitske.Kehrer@cern.ch The CLIC Test Facility 3 (CTF3), built at CERN by an international collaboration, aims at demonstrating the feasibility of the CLIC scheme by 2010. The CTF3 drive beam generation scheme relies on the use of a fast phase switch of a sub-harmonic bunching system in order to phase-code the bunches. The amount of charge in unwanted satellite bunches is an important quantity, which must be minimized. Beam dynamic simulations have been used to study the problem, showing the limitation of the present CTF3 design and the gain of potential upgrades. In this paper the results are discussed and compared with beam measurements taken during the first operation of the system. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CERN CERN CTF3 CERN bunching CERN linac CERN simulation SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-10-03 14:34:35 CLIC-Note-683 CTF3-Note-075 4 p Beam Dynamics and First Operation of the Sub-Harmonic Bunching System in the CTF3 Injector oai:cds.cern.ch:972321 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923887 Inspire 727813 2006 Geneva CERN 13 Jul 2006 AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS101.PDF Published version from JACoW 9693 333233 http://cds.cern.ch/record/972321/files/ab-2006-067.pdf Access to fulltext document eng CERN Library CLIC-Note-0683 CERN Library AB-2006-067 13 20100901 1607 CER01 20060717 687798 795 edinburgh20060626 PUBLIC 002636326CER 972322 SzGeCERN 20241025034150.0 CLINOT ARTICLE ConferencePaper Bravin, E CERN Burel, B CERN Chapman, T CERN Lefèvre, T CERN Pilon, M J CERN Welsch, C P CERN CERN-AB-2006-068 CLIC CTF3 CERN ARTICLE JACoW T03 Beam Diagnostics and Instrumentation JACoW 06 Beam Instrumentation and Feedback Tjitske.Kehrer@cern.ch In future high intensity, high energy accelerators, beam loss has to be minimized to maximize performance and reduce activation of accelerator components. It is imperative to have a clear understanding of the mechanisms that can lead to halo formation and to have the possibility to test available theoretical models with an adequate experimental setup. Measurements based on optical transition radiation (OTR) provide an interesting opportunity for high resolution measurements of the transverse beam profile. In order to be applicable for measurements within the beam halo region, it is of utmost importance that a high dynamic range is covered by the image acquisition system. The existing camera system as it is installed in the CLIC Test Facility (CTF3) is compared to a step-by-step measurement with a photo multiplier tube (PMT) and measurements with a cooled charge injection device (CID) camera. The latter acquisition technique provides an innovative and highly flexible approach to high dynamic range measurements and is presented in some detail. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN CTF3 CERN beam-losses CERN injection CERN site SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-10-03 14:41:17 CLIC-Note-686 CTF3-Note-081 4 p oai:cds.cern.ch:972322 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923879 Inspire 727812 2006 Geneva CERN 13 Jul 2006 AB BI https://accelconf.web.cern.ch/e06/PAPERS/TUPCH088.PDF Published version from JACoW 9694 194714 http://cds.cern.ch/record/972322/files/ab-2006-068.pdf Fulltext eng CERN Library CLIC-Note-0686 CERN Library AB-2006-068 High dynamic range beam profile measurements 13 20100901 1607 CER01 20060717 687798 1217 edinburgh20060626 PUBLIC 002636327CER 972689 SzGeCERN 20241025034324.0 CLINOT ARTICLE ConferencePaper Bal, C CERN Braun, H H CERN Bravin, E CERN Burger, S CERN Corsini, R CERN Döbert, Steffen CERN Dutriat, C CERN Tecker, F A CERN Urschütz, Peter CERN Welsch, C P CERN Lefèvre, T CERN CERN-AB-2006-079 CLIC CTF3 CERN ARTICLE JACoW T03 Beam Diagnostics and Instrumentation JACoW 06 Beam Instrumentation and Feedback Tjitske.Kehrer@cern.ch The high charge (>6ìC) electron beam produced in the CLIC Test Facility 3 (CTF3) is accelerated in fully beam loaded cavities. To be able to measure the resulting strong transient effects, the time evolution of the beam energy and its energy spread must be determined with at least 50MHz bandwidth. Three spectrometer lines are installed along the linac in order to control and tune the beam. The electrons are deflected by dipole magnets onto Optical Transition Radiation (OTR) screens which are observed by CCD cameras. The measured horizontal beam size is then directly related to the energy spread. In order to provide time-resolved energy spectra, a fraction of the OTR photons is sent onto a multi-channel photomultiplier. The overall setup is described, special focus is given to the design of the OTR screen with its synchrotron radiation shielding. The performance of the time-resolved measurements are discussed in detail. Finally, the limitations of the system, mainly due to radiation problems are discussed. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN electron CERN linac CERN photon CERN radiation CERN synchrotron SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-10-03 14:39:08 CLIC-Note-685 CTF3-Note-080 4 p Time resolved spectrometry on the CLIC Test Facility 3 oai:cds.cern.ch:972689 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923445 Inspire 727769 2006 Geneva CERN 13 Jul 2006 AB BI https://accelconf.web.cern.ch/e06/PAPERS/TUPCH083.PDF Published version from JACoW 9717 241251 http://cds.cern.ch/record/972689/files/ab-2006-079.pdf Fulltext eng CERN Library CLIC-Note-0685 CERN Library AB-2006-079 13 20100901 1607 CER01 20060718 687798 1205 edinburgh20060626 PUBLIC 002636847CER 972683 20060831 1727 CER01 20060718 002636842CER UNKNOWN DELETED 972677 SzGeCERN 20241025034320.0 CLINOT ARTICLE ConferencePaper CERN-AB-2006-077 CLIC Not applicable ILC CERN ARTICLE JACoW A10 Damping Rings JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Bruns, W CERN Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Tjitske.Kehrer@cern.ch We discuss ion trapping, rise time of fast beam-ion instability, and ion-induced incoherent tune shift for various incarnations of the ILC damping rings and for the CLIC damping ring, taking into account the different regions of each ring. Analytical calculations for ion trapping are compared with results from a new simulation code. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN damping CERN ion CERN vacuum CERN wiggler SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-09-13 17:44:19 CLIC-Note-676 Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# 4 p Ion Effects in the Damping Rings of ILC and CLIC oai:cds.cern.ch:972677 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923453 Inspire 727770 2006 Geneva CERN 13 Jul 2006 AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS136.PDF Published version from JACoW 9716 375742 http://cds.cern.ch/record/972677/files/ab-2006-077.pdf Fulltext eng CERN Library CLIC-Note-0676 CERN Library AB-2006-077 13 20100901 1607 CER01 20060718 687798 876 edinburgh20060626 PUBLIC 002636753CER 972669 SzGeCERN 20241025034317.0 oai:cds.cern.ch:972669 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923488 Inspire 727773 CERN-AB-2006-076 eng CERN Library CLIC-Note-0682 CERN Library AB-2006-076 CLIC-Note-682 CTF3-Note-074 Urschütz, Peter CERN Beam dynamics studies and emittance optimization in the CTF3 linac at CERN 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-10-03 12:02:23 Small transverse beam emittances and well-known lattice functions are crucial for the 30 GHz power production in the Power Extraction and Transfer Structure (PETS) and for the commissioning of the Delay Loop of the CLIC Test Facility 3 (CTF3). Following beam dynamics simulation results, two additional solenoids were installed in the CTF3 injector in order to improve the emittance. During the runs in 2005 and 2006, an intensive measurement campaign to determine Twiss parameters and beam sizes was launched. The results obtained by means of quadrupole scans for different modes of operation suggest emittances well below the nominal .n,rms = 100 ?Î?Êm and a good agreement with PARMELA simulations. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200801 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CTF3 CERN emittance CERN linac CERN quadrupole CERN simulation CERN ARTICLE CLIC CTF3 JACoW A03 Linear Colliders JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Braun, Hans-Heinrich CERN Corsini, Roberto CERN Döbert, Steffen CERN Ferrari, Arnaud UU/ISV, Uppsala AUTHOR|(CDS)2074712 #BEARD# Tecker, Frank CERN AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS102.PDF Published version from JACoW 9715 203528 http://cds.cern.ch/record/972669/files/ab-2006-076.pdf Fulltext Tjitske.Kehrer@cern.ch peter.urschuetz@cern.ch n 200629 a2006 13 20100901 1607 CER01 20060718 687798 798 edinburgh20060626 PUBLIC 002636749CER CLINOT ARTICLE ConferencePaper 002733801CER01 972667 SzGeCERN 20240223163824.0 oai:cds.cern.ch:972667 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923500 Inspire 727775 CERN-AB-2006-075 eng CERN Library AB-2006-075 CARE-Conf-06-027-HHH CARE-Conf-2006-027-HHH Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Simulation study on the energy dependence of the TMCI threshold in the CERN-SPS 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 10:56:29 This paper concentrates on theoretical studies of Transverse Mode Coupling Instability (TMCI) at the SPS. It shows the expected thresholds based on the HEADTAIL tracking model and on impedance values estimated from previous measurements. First, the effect of space charge is addressed as an important ingredient at the low energies. Subsequently, the change of TMCI threshold possibly induced by a higher injection energy into the SPS (plausible according to the upgrade studies) is investigated and a scaling law with energy is derived. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added SIS CARE2008 CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN SPS CERN electron CERN impedance CERN simulation CERN space-charge ARTICLE CERN XX XX JACoW D04 Instabilities - Processes, Impedances, Countermeasures JACoW 05 Beam Dynamics and Electromagnetic Fields Métral, E Shaposhnikova, Elena AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-075 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH060.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/CARE/Conf/care-conf-06-027.pdf Fulltext http://cds.cern.ch/record/972667/files/ab-2006-075.pdf Access to fulltext document http://cds.cern.ch/record/972667/files/care-conf-06-027.pdf Fulltext Tjitske.Kehrer@cern.ch CERN n 200629 a2006 13 20100901 1607 CER01 20060718 687798 2922 edinburgh20060626 PUBLIC 002636747CER ARTICLE ConferencePaper 972359 SzGeCERN 20241025034159.0 CLINOT ARTICLE ConferencePaper Losito, R CERN CERN-AB-2006-074 CLIC CTF3 ARTICLE CERN JACoW T02 Lepton Sources JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Bienvenu,G Chilbolton Observ. Braun, H CERN Champault, N CERN Chevallay, E CERN Divall, M Chilbolton Observ. Fedosseev, V CERN Hirst, G Chilbolton Observ. Kumar, A CERN AUTHOR|(CDS)2075405 #BEARD# Kurdi, G Chilbolton Observ. Martin, W Chilbolton Observ. Masi, A CERN Mercier, B Orsay, LAL Musgrave, I Chilbolton Observ. Prevost, C Orsay, LAL Ross, I Chilbolton Observ. Roux, R Orsay, LAL Springate, E Chilbolton Observ. Suberlucq, Guy CERN Tjitske.Kehrer@cern.ch A new photoinjector for the CTF3 drive beam has been designed and is now being constructed by a collaboration among LAL, CCLRC and CERN within PHIN, the second Joint Research Activity of CARE. The photoinjector will provide a train of 2332 pulses at 1.5 GHz with a complex timing structure (sub-trains of 212 pulses spaced from one another by 333 ps or 999 ps) to allow the frequency multiplication scheme, which is one of the features of CLIC, to be tested in CTF3. Each pulse of 2.33 nC will be emitted by a Cs2Te photocathode deposited by a co-evaporation process to allow high quantum efficiency in operation (>3% for a minimum of 40 h). The 3 GHz, 2 1/2 cell RF gun has a 2 port coupler to minimize emittance growth due to asymmetric fields, racetrack profile of the irises and two solenoids to keep the emittance at the output below 20 p.mm.mrad. The laser has to survive very high average powers both within the pulse train (15 kW) and overall (200 W before pulse slicing). Challenging targets are also for amplitude stability (<0.25% rms) and time jitter from pulse to pulse (<1ps rms). An offline test in a dedicated line is foreseen at CERN in 2007. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS CARE2008 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CERN CERN CTF3 CERN gun CERN laser CERN vacuum SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-10-03 14:37:07 CLIC-Note-684 CTF3-Note-078 CARE-Conf-06-019-PHIN CARE-Conf-2006-019-PHIN 4 p The PHIN photoinjector for the CTF3 Drive beam oai:cds.cern.ch:972359 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923674 Inspire 727792 2006 Geneva CERN 13 Jul 2006 AB ATB https://accelconf.web.cern.ch/e06/PAPERS/WEPLS059.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/CARE/Conf/care-conf-06-019.pdf Fulltext 9702 183445 http://cds.cern.ch/record/972359/files/ab-2006-074.pdf Access to fulltext document 9703 352151 http://cds.cern.ch/record/972359/files/care-conf-06-019.pdf Fulltext eng CERN Library CLIC-Note-0684 CERN Library AB-2006-074 13 20100901 1607 CER01 20060717 687798 2517 edinburgh20060626 PUBLIC 002636581CER 972327 SzGeCERN 20241025034307.0 CLINOT ARTICLE ConferencePaper CERN. Geneva POSIPOL Collaboration https://accelconf.web.cern.ch/e06/PAPERS/WEPLS060.PDF Published version from JACoW http://documents.cern.ch/archive/electronic/other/uploader/CARE/INTNOTE/note-2006-024-ELAN.pdf Fulltext http://documents.cern.ch/archive/electronic/other/uploader/CARE/Conf/care-conf-06-001.pdf Fulltext 9699 105801 http://cds.cern.ch/record/972327/files/ab-2006-073.pdf Fulltext 9700 177218 http://cds.cern.ch/record/972327/files/note-2006-024-ELAN.pdf Fulltext 9701 257837 http://cds.cern.ch/record/972327/files/care-conf-06-001.pdf Fulltext CERN-AB-2006-073 CLIC Not applicable ARTICLE CERN INTNOTE PUBLCARE JACoW T02 Lepton Sources JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Araki, S KEK, Tsukuba Artru, X Lyon, IPN Braun, H CERN Bulyak, E Kharkov, KIPT Chehab, R Lyon, IPN Chevallier, M Lyon, IPN Fukuda, M Gao, J Gladkikh, P Guiducci, S Higashi, Y Hirano, K Hirose, T Honda, Y Korostelev, M S Kurihara, Y Kuriki, M Mönig, K Okugi, T Omori, T Raimondi, P Rinolfi, Louis CERN Sato, H Sakaue, K Schulte, Daniel AUTHOR|(CDS)2067943 #BEARD# Soskov, V Strakhovenko, V M Takano, M Takahashi, T Taniguchi, T Terunuma, N Tsunemi, A Urakawa, J Variola, A Washio, M Zomer, F Tjitske.Kehrer@cern.ch We describe a possible layout and parameters of a polarized positron source for CLIC, where the positrons are produced from polarized gamma rays created by Compton scattering of a 1.3-GeV electron beam off a YAG laser. This scheme is very energy effective using high finesse laser cavities in conjunction with an electron storage ring. We point out the differences with respect to a similar system proposed for the ILC. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS CARE2008 SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CLIC CERN damping CERN laser CERN photon CERN positron SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-09-13 17:40:15 CARE-ELAN-DOCUMENT-2006-006 CLIC-Note-674 CARE-Note-2006-024-ELAN CARE-Conf-06-001-ELAN CARE-Conf-2006-001-ELAN Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# 4 p CLIC Polarized Positron Source Based on Laser Compton Scattering oai:cds.cern.ch:972327 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923828 Inspire 727807 2006 Geneva CERN 13 Jul 2006 eng CERN Library CLIC-Note-0674 CERN Library AB-2006-073 13 20100901 1607 CER01 20060717 687798 2520 edinburgh20060626 PUBLIC 002636519CER 972326 SzGeCERN 20241025034152.0 CLINOT ARTICLE ConferencePaper CERN-AB-2006-072 CLIC Not applicable CERN ARTICLE JACoW A10 Damping Rings JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# Tjitske.Kehrer@cern.ch The sensitivity of the CLIC damping ring to various kinds of alignment errors has been studied. Without any correction, fairly small vertical misalignments of the quadrupoles and, in particular, the sextupoles, introduce unacceptable distortions of the closed orbit as well as intolerable spurious vertical dispersion and coupling due to the strong focusing optics of the damping ring. A sophisticated beam-based correction scheme has been developed to bring the design target emittances and the dynamic aperture back to the ideal value. The correction using dipolar correctors and several skew quadrupole correctors allows a minimization of the closed-orbit distortion, the cross-talk between vertical and horizontal closed orbits, the residual vertical dispersion and the betatron coupling. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN coupling CERN dipole CERN emittance CERN quadrupole CERN sextupole SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-09-11 17:35:04 CLIC-Note-673 Geneva CERN 13 Jul 2006 4 p Correction of vertical dispersion and betatron coupling for the CLIC damping ring oai:cds.cern.ch:972326 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923836 Inspire 727808 2006 Korostelev, M S CERN AB ABP https://accelconf.web.cern.ch/e06/PAPERS/MOPLS135.PDF Published version from JACoW 9698 332551 http://cds.cern.ch/record/972326/files/ab-2006-072.pdf Fulltext eng CERN Library CLIC-Note-0673 CERN Library AB-2006-072 13 20100901 1607 CER01 20060717 687798 873 edinburgh20060626 PUBLIC 002636517CER 972325 SzGeCERN 20241025034251.0 oai:cds.cern.ch:972325 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923844 Inspire 727809 CERN-AB-2006-071 eng CERN Library CLIC-Note-0672 CERN Library AB-2006-071 CLIC-Note-672 Braun, H CERN Minimizing Emittance for the CLIC Damping Ring 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-09-14 16:44:58 The CLIC damping rings aim at unprecedented small normalized equilibrium emittances of 3.3 nm vertical and 550 nm horizontal, for a bunch charge of 2.6·109 particles and an energy of 2.4 GeV. In this parameter regime the dominant emittance growth mechanism is intra-beam scattering. Intense synchrotron radiation damping from wigglers is required to counteract its effect. Here the overall optimization of the wiggler parameters is described, taking into account state-of-the-art wiggler technologies, wiggler effects on dynamic aperture, and problems of wiggler radiation absorption. Two technical solutions, one based on superconducting magnet technology the other on permanent magnets are presented. Although dynamic aperture and tolerances of this ring design remain challenging, benefits are obtained from the strong damping. For optimized wigglers, only bunches for a single machine pulse may need to be stored, making injection/extraction particularly simple and limiting the synchrotron-radiation power. With a 365 m circumference the ring remains comparatively small. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE SzGeCERN Accelerators and Storage Rings CERN CLIC CERN damping CERN emittance CERN permanent-magnet CERN wiggler CERN ARTICLE CLIC Not applicable JACoW A10 Damping Rings JACoW 03 Linear Colliders, Lepton Accelerators and New Acceleration Techniques Korostelev, M S CERN Levitchev, E BINP, Novosibirsk, Russia Piminov, P BINP, Novosibirsk, Russia Schulte, Daniel CERN AUTHOR|(CDS)2067943 #BEARD# Siniatkin, S BINP, Novosibirsk, Russia Vobly, P P BINP, Novosibirsk, Russia Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# Zolotarev, Konstantin V BINP, Novosibirsk, Russia AB ABP CERN. Geneva https://accelconf.web.cern.ch/e06/PAPERS/MOPLS134.PDF Published version from JACoW 9697 531790 http://cds.cern.ch/record/972325/files/ab-2006-071.pdf Fulltext Tjitske.Kehrer@cern.ch n 200629 a2006 13 20100901 1607 CER01 20060717 687798 870 edinburgh20060626 PUBLIC 002636516CER CLINOT ARTICLE ConferencePaper 972324 SzGeCERN 20240223163803.0 oai:cds.cern.ch:972324 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923852 Inspire 727810 CERN-AB-2006-070 eng CERN Library AB-2006-070 Zimmermann, Frank CERN AUTHOR|(CDS)2067941 #BEARD# Tune shift induced by nonlinear resistive wall wake field of flat collimator 2006 Geneva CERN 13 Jul 2006 4 p revised version submitted on 2006-08-21 11:37:40 We present formulae for the coherent and incoherent tune shifts due to the nonlinear resistive wall wake field for a single beam traveling between two parallel plates. In particular, we demonstrate that the nonlinear terms of the resistive-wall wake field become important if the gap between the plates is comparable to the transverse rms beam size. We also compare the theoretically predicted tune shift as a function of gap size with measurements for an LHC prototype graphite collimator in the CERN SPS and with simulations. CC-BY publication JACoW CERN EDS SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 SzGeCERN Accelerators and Storage Rings CERN CERN CERN LHC CERN SPS CERN emittance CERN impedance CERN ARTICLE XX XX JACoW D04 Instabilities - Processes, Impedances, Countermeasures JACoW 05 Beam Dynamics and Electromagnetic Fields Arduini, Gianluigi AUTHOR|(CDS)2051255 #BEARD# Assmann, R W Burkhardt, H Caspers, Friedhelm Gasior, M Jones, R Kroyer, T Métral, E Redaelli, S Robert-Démolaize, G Roncarolo, F Rumolo, Giovanni CERN AUTHOR|(CDS)2069325 #BEARD# Steinhagen, Ralph J Wenninger, J AB ABP http://documents.cern.ch/cgi-bin/setlink?base=preprint&categ=cern&id=ab-2006-070 Access to fulltext document https://accelconf.web.cern.ch/e06/PAPERS/THPCH061.PDF Published version from JACoW http://cds.cern.ch/record/972324/files/ab-2006-070.pdf Access to fulltext document Tjitske.Kehrer@cern.ch CERN n 200629 a2006 13 20100901 1607 CER01 20060717 687798 2925 edinburgh20060626 PUBLIC 002636515CER ARTICLE ConferencePaper 972323 SzGeCERN 20241025034151.0 CLINOT ARTICLE ConferencePaper Bravin, E CERN Lefèvre, T CERN Welsch, C P CERN CERN-AB-2006-069 CLIC CTF3 CERN ARTICLE JACoW T03 Beam Diagnostics and Instrumentation JACoW 06 Beam Instrumentation and Feedback Tjitske.Kehrer@cern.ch Optical transition radiation (OTR) has proven to be a flexible and effective tool for measuring a wide range of beam parameters, in particular the beam divergence and the transverse beam profile. It is today an established and widely used diagnostic method providing linear real-time measurements. Measurements in the CLIC Test Facility (CTF3) showed that the performance of the present profile monitors is limited by the optical acceptance of the imaging system. In this paper, two methods to improve the systems' performance are presented and results from measurements are shown. First, the influence of the surface quality of the OTR screen itself is addressed. Several possible screen materials have been tested to which different surface treatment techniques were applied. Results from the measured optical characteristics are given. Second, a parabolic-shaped screen support was investigated with the aim of providing an initial focusing of the emitted radiation and thus to reduce the problem of aperture limitation. CC-BY publication JACoW CERN EDS CLIC-Note OA SIS EPAC06-2007 SIS:200712 PR/LKR added CERN-AB CLAS1 CLICARCHIVE CERN CTF3 CERN diagnostics CERN electron CERN focusing CERN radiation SzGeCERN Accelerators and Storage Rings n 200629 a2006 revised version submitted on 2006-10-03 14:43:20 CLIC-Note-687 CTF3-Note-082 4 p Investigations of OTR screen surfaces and shapes oai:cds.cern.ch:972323 cerncds:FULLTEXT cerncds:CERN:FULLTEXT cerncds:CERN SPIRES 6923860 Inspire 727811 2006 Geneva CERN 13 Jul 2006 AB BI https://accelconf.web.cern.ch/e06/PAPERS/TUPCH089.PDF Published version from JACoW 9695 300903 http://cds.cern.ch/record/972323/files/ab-2006-069.pdf Access to fulltext document eng CERN Library CLIC-Note-0687 CERN Library AB-2006-069 13 20100901 1607 CER01 20060717 687798 1220 edinburgh20060626 PUBLIC 002636514CER