|
1.
|
Design of the CLIC Quadrupole Vacuum Chambers
/ Garion, C (CERN) ; Kos, H (CERN)
The Compact Linear Collider, under study, requires vacuum chambers with a very small aperture, of the order of 8 mm in diameter, and with a length up to around 2 m for the main beam quadrupoles. To keep the very tight geometrical tolerances on the quadrupoles, no bake out is allowed. [...]
CERN-ATS-2009-133; CLIC-Note-782.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6RFP007
|
|
|
|
Detailed record
|
|
|
2.
|
Design, Testing and Operation of the Modulator for the CTF3 Tail Clipper Kicker
/ Barnes, M J (CERN) ; Fowler, T (CERN) ; Ravida, G (CERN)
The goal of the present CLIC Test Facility (CTF3) is to demonstrate the technical feasibility of specific key issues in the CLIC scheme. The extracted drive beam from the combiner ring (CR, of 35 A magnitude and 140 ns duration, is sent to the new CLic EXperimental area (CLEX). [...]
CERN-ATS-2009-132; CLIC-Note-783.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU6RFP075
|
|
|
|
Detailed record
|
|
|
3.
|
Experimental Studies of Carbon Coatings as Possible Means of Suppressing Beam Induced Electron Multipacting in the CERN SPS
/ Shaposhnikova, E N (CERN) ; Arduini, Gianluigi ; Axensalva, J (CERN) ; Benedetto, E (CERN) ; Calatroni, S (CERN) ; Chiggiato, P (CERN) ; Cornelis, K (CERN) ; Costa-Pinto, P (CERN) ; Henrist, B (CERN) ; Jiménez, J M (CERN) et al.
Electron cloud build-up is a major limitation for the operation of the SPS with LHC beam above nominal intensity. These beams are envisaged in the frame of the LHC luminosity upgrade and will be available from the new injectors LPSPL and PS2. [...]
CERN-ATS-2009-075.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6RFP008
|
|
|
|
Detailed record
|
|
|
|
|
5.
|
Optimization of the powering tests of the LHC superconducting circuits
/ Bellesia, B (CERN) ; Paz Casas Lino, M (CERN) ; Denz, R (CERN) ; Fernandez-Robles, C (CERN) ; Pojer, M (CERN) ; Saban, R (CERN) ; Schmidt, R (CERN) ; Solfaroli Camillocci, M (CERN) ; Thiesen, H (CERN) ; Vergara Fernández, A (CERN)
The Large Hadron Collider has (LHC) 1572 superconducting circuits which are distributed along the eight 3.5 km LHC sectors [1]. Time and resources during the commissioning of the LHC technical systems were mostly consumed by the powering tests of each circuit. [...]
CERN-ATS-2009-072.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE6RFP049
|
|
|
|
Detailed record
|
|
|
6.
|
Information Management within the LHC Hardware Commissioning Project
/ Bellesia, B (CERN) ; Fernández-Robles, C (CERN) ; Koratzinos, M (CERN) ; Marqueta Barbero, A (CERN) ; Pojer, M (CERN) ; Saban, R (CERN) ; Schmidt, R (CERN) ; Solfaroli Camilloci, M (CERN) ; Szkutnik, J (CERN) ; Vergara Fernández, A (CERN) et al.
The core task of the commissioning of the LHC technical systems was the individual test of the 1572 superconducting circuits of the collider, the powering tests. The two objectives of these tests were the validation of the different sub-systems making each superconducting circuit as well as the validation of the superconducting elements of the circuits in their final configuration in the tunnel. [...]
CERN-ATS-2009-059.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.FR5REP008
|
|
|
|
Detailed record
|
|
|
7.
|
Determination of the Chromaticity of the TI 8 Transfer Line Based on Kick Response Measurements
/ Fuchsberger, K (CERN) ; Fartoukh, S (CERN) ; Goddard, B (CERN) ; Jones, R (CERN) ; Kain, V (CERN) ; Meddahi, M (CERN) ; Mertens, V (CERN) ; Wenninger, J (CERN)
The 3 km long TI 8 transfer line is used to transfer 450 GeV proton and ion beams from the SPS to LHC collider. As part of a detailed optics investigation program the chromaticity of the transfer line was measured. [...]
CERN-ATS-2009-058.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TH6PFP038
|
|
|
|
Detailed record
|
|
|
8.
|
Performance of the LHC magnet system
/ Parma, V (CERN) ; Rossi, L (CERN)
The LHC magnet system, essentially composed of superconducting magnets operating at 1.9 K, has been largely commissioned in 2007-08. Before the serious incident of 19th September 2008, the magnet system was commissioned up to 7 kA (4 TeV proton beam energy); six (out of eight) sectors were commissioned up to 5.5 TeV and one up to 6.6 TeV. [...]
CERN-ATS-2009-023.-
Geneva : CERN, 2010 - 6 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU1RAI03
|
|
|
|
Detailed record
|
|
|
9.
|
Experience with the LHC beam dump post-operational checks system
/ Uythoven, J (CERN) ; Axensalva, J (CERN) ; Baggiolini, V (CERN) ; Carlier, E (CERN) ; Gallet, E (CERN) ; Goddard, B (CERN) ; Kain, V (CERN) ; Lamont, M (CERN)
After each beam dump in the LHC automatic post-operational checks are made to guarantee that the last beam dump has been executed correctly and that the system can be declared to be ‘as good as new’ before the next injection is allowed. The analysis scope comprises the kicker waveforms, redundancy in kicker generator signal paths and different beam instrumentation measurements. [...]
CERN-ATS-2009-021.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU6RFP029
|
|
|
|
Detailed record
|
|
|
|
|
11.
|
Radiation zoning for vacuum equipment of the CERN Large Hadron Collider
/ Mahner, E (CERN) ; Chemli, S (CERN) ; Cruikshank, P (CERN) ; Forkel-Wirth, D (CERN) ; Jiménez, J M (CERN)
Beam losses in high-energy particle accelerators are responsible for beam lifetime degradation. In the LHC beam losses will create a shower of particles while interacting with materials from the beam pipes and surroundings, resulting in a partial activation of material in the tunnel. [...]
CERN-ATS-2009-019.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE6RFP048
|
|
|
|
Detailed record
|
|
|
12.
|
Measurement of the longitudinal and transverse impedance of kicker magnets using the coaxial wire method
/ Barnes, M J (CERN) ; Caspers, Friedhelm (CERN) ; Kroyer, T (CERN) ; Métral, E (CERN) ; Roncarolo, F (CERN) ; Salvant, B (CERN)
Fast kicker magnets are used to inject beam into and eject beam out of the CERN SPS accelerator ring. These kickers are generally ferrite loaded transmission line type magnets with a rectangular shaped aperture through which the beam passes. [...]
CERN-ATS-2009-018.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU6RFP076
|
|
|
|
Detailed record
|
|
|
13.
|
Measurement and analysis of SPS kicker magnet heating and outgassing with Different Bunch Spacing
/ Barnes, M J (CERN) ; Caspers, Friedhelm (CERN) ; Cornelis, K (CERN) ; Ducimetière, L (CERN) ; Mahner, E (CERN) ; Papotti, G (CERN) ; Rumolo, G (CERN) ; Senaj, V (CERN) ; Shaposhnikova, E (CERN)
Fast kicker magnets are used to inject beam into and eject beam out of the CERN SPS accelerator ring. These kickers are generally ferrite loaded transmission line type magnets with a rectangular shaped aperture through which the beam passes. [...]
CERN-ATS-2009-017.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.FR2RAC02
|
|
|
|
Detailed record
|
|
|
14.
|
LHC Abort Gap Cleaning with the Transverse Damper
/ Gianfelice-Wendt, E (Fermilab) ; Goddard, B (CERN) ; Höfle, Wolfgang (CERN) ; Kain, V (CERN) ; Meddahi, M (CERN) ; Shaposhnikova, E (CERN) ; Koschik, A (Zurich, ETH)
In the Large Hadron Collider, LHC, particles not captured by the RF system at injection or leaking out of the RF bucket may quench the superconducting magnets during beam abort. The problem, common to other superconducting machines, is particularly serious for the LHC due to the very large stored energy in the beam. [...]
CERN-ATS-2009-016.-
Geneva : CERN, 2010 - 4 p.
Fulltext: PDF; Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE6PFP017
|
|
|
|
Detailed record
|
|
|
15.
|
Initial results from beam commissioning of the LHC beam dump system
/ Goddard, B (CERN) ; Agapov, I (CERN) ; Carlier, E (CERN) ; Ducimetière, L (CERN) ; Gallet, E (CERN) ; Gyr, M (CERN) ; Jensen, L (CERN) ; Jones, R (CERN) ; Kain, V (CERN) ; Kramer, T (CERN) et al.
Initial commissioning of the LHC beam dump system with beam took place in August and September 2008. The preparation, setting-up and the tests performed are described together with results of the extractions of beam into the dump lines. [...]
CERN-ATS-2009-015.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU6RFP024
|
|
|
|
Detailed record
|
|
|
|
|
17.
|
Machine studies during beam commissioning of the SPS-to-LHC transfer lines
/ Meddahi, M (CERN) ; Agapov, I (CERN) ; Fuchsberger, K (CERN) ; Goddard, B (CERN) ; Herr, Werner (CERN) ; Kain, V (CERN) ; Mertens, V (CERN) ; Missiaen, D (CERN) ; Risselada, Thys (CERN) ; Uythoven, J (CERN) et al.
Through May to September 2008, further beam commissioning of the SPS-to-LHC transfer lines was performed. For the first time, optics and dispersion measurements were also taken in the last part of the lines, and into the LHC. [...]
CERN-ATS-2009-013.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TH6PFP040
|
|
|
|
Detailed record
|
|
|
18.
|
Beam commissioning of injection into the LHC
/ Mertens, V (CERN) ; Agapov, I (CERN) ; Goddard, B (CERN) ; Gyr, M (CERN) ; Kain, V (CERN) ; Kramer, T (CERN) ; Lamont, M (CERN) ; Meddahi, M (CERN) ; Uythoven, J (CERN) ; Wenninger, J (CERN)
The LHC injection tests and first turn beam commissioning took place in late summer 2008, after detailed and thorough preparation. The beam commissioning of the downstream sections of the SPS-to-LHC transfer lines and the LHC injection systems is described. [...]
CERN-ATS-2009-012.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.TU6RFP026
|
|
|
|
Detailed record
|
|
|
|
|
20.
|
First field test of FiDeL : The magnetic field description for the LHC
/ Bottura, L (CERN) ; Buzio, M (CERN) ; Catalan-Lasheras, N (CERN) ; Deniau, L (CERN) ; Di Castro, M (CERN) ; Fartoukh, S (CERN) ; Giovannozzi, M (CERN) ; Hagen, P (CERN) ; Koutchouk, Jean-Pierre (CERN) ; Lamont, M (CERN) et al.
The start-up of the LHC has provided the first field test for the concept, functionality and accuracy of FiDeL, the Field Description for the LHC. FiDeL provides a parametric model of the transfer function of the main field integrals generated by the series of magnets in the LHC powering circuits, comprising superconducting and normal-conducting main optical elements and high-order harmonic correctors. [...]
CERN-ATS-2009-010.-
Geneva : CERN, 2010 - 4 p.
Fulltext: PDF; Published version from JACoW: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6PFP046
|
|
|
|
Detailed record
|
|
|
21.
|
Methods to detect faulty splices in the superconducting magnet system of the LHC
/ Bailey, R (CERN) ; Bellesia, B (CERN) ; Catalan Lasheras, N (CERN) ; Dahlerup-Petersen, K (CERN) ; Denz, R (CERN) ; Robles, C (CERN) ; Koratzinos, M (CERN) ; Pojer, M (CERN) ; Ponce, L (CERN) ; Saban, R (CERN) et al.
The incident of 19 September 2008 at the LHC was caused by a faulty inter-magnet splice of about 200 nΩ resistance. Cryogenic and electrical techniques have been developed to detect other abnormal splices, either between or inside the magnets. [...]
CERN-ATS-2009-009.-
Geneva : CERN, 2010 - 4 p.
Fulltext: PDF; Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6PFP049
|
|
|
|
Detailed record
|
|
|
22.
|
Upgrade of the protection system for superconducting circuits in the LHC
/ Denz, R (CERN) ; Dahlerup-Petersen, K (CERN) ; Formenti, F (CERN) ; Meß, K H (CERN) ; Siemko, A (CERN) ; Steckert, J (CERN) ; Walckiers, L (CERN) ; Strait, J (Fermilab)
Prior to the re-start of the Large Hadron Collider LHC in 2009 the protection system for superconducting magnets and bus-bars QPS will be substantially upgraded. The foreseen modifications will enhance the capability of the system in detecting problems related to the electrical interconnections between superconducting magnets as well as the detection of so-called aperture symmetric quenches in the LHC main magnets..
CERN-ATS-2009-008.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6PFP047
|
|
|
|
Detailed record
|
|
|
|
|
24.
|
Helium II calorimetry for the detection of abnormal resistive zones in LHC sectors
/ Tavian, L (CERN)
Following the incident on a LHC sector due to an electrical arc on the main dipole bus-bar circuit, postmortem analysis of previous current plateaus has shown abnormal temperature drift in the helium II baths of some magnets in the concerned area. In order to identify other possible risky areas, a detection system based on calorimety using available precision cryogenic thermometers has been first validated by applying calibrated heating in the magnet cold-mass and then implemented in the different sectors. [...]
CERN-ATS-2009-006.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.WE6RFP003
|
|
|
|
Detailed record
|
|
|
25.
|
Installation and commissioning of vacuum systems for the LHC particle detectors
/ Veness, R (CERN) ; Ramos, D (CERN) ; Lepeule, P (CERN) ; Rossi, A (CERN) ; Schneider, G (CERN) ; Blanchard, S (CERN)
The LHC collider has recently completed commissioning at CERN. At four points around the 27 km ring, the beams are put into collision in the centre of the experiments ALICE, ATLAS, CMS and LHCb which are installed in large underground caverns. [...]
CERN-ATS-2009-005.-
Geneva : CERN, 2010 - 4 p.
Published version from PAC09: PDF;
In : Particle Accelerator Conference 2009, Vancouver, Canada, 04 - 08 May 2009, pp.MO6RFP010
|
|
|
|
Detailed record
|
|
|
|
|
27.
|
|
|
Task Force Report, Safety of Personnel in LHC underground areas following the accident of 19th September 2008
/ Delille, B (CERN) ; Evrard, S (CERN) ; Inigo-Golfin, J (CERN) ; Lindell, G (CERN) ; Roy, G (CERN) ; Tavian, L (CERN) ; Thomas, E (CERN) ; Trant, R (CERN) ; Völlinger, C (CERN)
In January 2009, the Task Force on Safety of Personnel in the LHC underground areas following the accident in sector 3-4 of 19th September 2008 (Safety Task Force) received from the CERN Director General the mandate to investigate the impact of the accident of 19th September 2008 on the safety of personnel working in the LHC underground areas. [...]
CERN-ATS-2009-002.
-
2009. - 33 p.
Fulltext
|
|
|
|
Detailed record
|
|
Subscribe to basket
Copy item