CERN Accelerating science

BE Conference Papers

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2016-08-12
06:33
Data Analysis and System Survey Framework for the LHC Beam Loss Monitoring System / Xu, Chen (CERN) ; Dehning, Bernd (CERN) ; Zamantzas, Christos (CERN)
A data analysis framework has been developed to perform systematic queries and automatic analysis of the large amount of data produced by the LHC beam loss monitoring system. The framework is used to provide continuous system supervision and can give advance warning of any potential system failures. [...]
CERN-ACC-2016-120.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOY046 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOY046

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2016-08-12
06:33
Time Scale of Crab Cavity Failures Relevant for High Luminosity LHC / Sjobak, Kyrre (CERN) ; Bruce, Roderik (CERN) ; Burkhardt, Helmut (CERN) ; Kwee-Hinzmann, Regina (Royal Holloway, U. of London) ; Macpherson, Alick (CERN) ; Santamaría García, Andrea (Ecole Polytechnique, Lausanne ; CERN)
A good knowledge of the effects of the crab cavities, required for the baseline High Luminosity LHC (HL-LHC), is needed before the results of the first tests of crab cavity prototypes in the SPS, planned for 2018, will be available. In case of crab cavity failures, we have to make sure that time scales are long enough so that the beams can be cleanly dumped before damage by beam loss occurs. [...]
CERN-ACC-2016-123.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOY043 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOY043

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2016-08-12
06:33
Tolerance Studies and Dispersion Free Steering for Extreme Low Emittance in the FCC-ee Project / Aumon, Sandra (CERN) ; Doblhammer, Andreas (TU Vienna) ; Härer, Bastian (KIT, Karlsruhe, IPE) ; Holzer, Bernhard (CERN) ; Oide, Katsunobu (KEK, Tsukuba)
The FCC-ee study is investigating the design of a 100 km e⁺/e⁻ circular collider for precision measurements and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10³⁵ cm⁻²s⁻¹. In order to reach such performances, an extreme focusing of the beam is required in the interaction regions with a low vertical beta function of 2 mm at the IP. [...]
CERN-ACC-2016-128.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR001 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR001

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2016-08-12
06:32
Integration and Testing of 3 Consecutive CLIC Two-Beam Modules / Vamvakas, Alexios (CERN) ; Aicheler, Markus (Helsinki Inst. of Phys.) ; Döbert, Steffen (CERN) ; Duquenne, Mathieu (CERN) ; Mainaud Durand, Helene (CERN) ; Rude, Vivien (Unlisted, FR) ; Sosin, Mateusz (CERN) ; Väinölä, Jukka (Helsinki Inst. of Phys.)
CLIC (Compact LInear Collider) is a study of a 50 km long linear electron-positron collider, consisting of ap-proximately 20,000 repetitive 2 m long modules. Micron level manufacturing and alignment tolerances are re-quired for the RF and magnet components due to the nanometre beam size and luminosity goal. [...]
CERN-ACC-2016-145.- 2016 - 3 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR033 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR033

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2016-08-12
06:32
Effect and Optimisation of Non-Linear Chromatic Aberrations of the CLIC Drive Beam Recombination at CTF3 / Gamba, Davide (CERN) ; Burrows, Philip (Oxford U., JAI ; Oxford U.) ; Corsini, Roberto (CERN) ; Skowroński, Piotr (CERN) ; Tecker, Frank (CERN)
The CLIC design relies on the two-beam acceleration principle, i.e. the energy transfer from the so called drive beam to the main colliding beams. [...]
CERN-ACC-2016-146.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR032 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR032

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2016-08-12
06:32
Beam-Loading Effect on Breakdown Rate in High-Gradient Accelerating Structures / Tecker, Frank (CERN) ; Argyropoulos, Theodoros (CERN ; Valencia U., IFIC) ; Catalán Lasheras, Nuria (CERN) ; Corsini, Roberto (CERN) ; Degiovanni, Alberto (Unlisted, CH ; CERN) ; Gamba, Davide (CERN ; Oxford U., JAI) ; Giner Navarro, Jorge (CERN ; Valencia U., IFIC) ; Grudiev, Alexej (CERN) ; McMonagle, Gerard (CERN) ; Navarro Quirante, Jose Luis (Unlisted, CH ; CERN) et al.
The Compact Linear Collider (CLIC) study for a future electron-positron collider with a center-of-mass energy up to 3 TeV aims for an accelerating gradient of 100 MV/m. The gradient is limited by RF breakdowns, and the luminosity requirements impose a limit on the admissible RF breakdown rate. [...]
CERN-ACC-2016-147.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR031 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR031

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2016-08-12
06:32
Tapering Options and Emittance Fine Tuning for the FCC-ee Collider / Härer, Bastian (CERN) ; Doblhammer, Andreas (CERN) ; Holzer, Bernhard (CERN)
The lepton collider version of the FCC study describes a future electron-positron collider with a circumference in the order of 100 km, optimised for operation with collision energies in the range of 90 GeV to 350 GeV (FCC- ee). This paper presents the layout of the machine and the constraints on the design of the arc lattice in the context of the four different beam energies that are foreseen for beam operation. [...]
CERN-ACC-2016-148.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR003 JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR003

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2016-08-12
06:32
RF Synchronization and Distribution for AWAKE at CERN / Damerau, Heiko (CERN) ; Barrientos, Diego (CERN) ; Bohl, Thomas (CERN) ; Butterworth, Andrew (CERN) ; Döbert, Steffen (CERN) ; Höfle, Wolfgang (CERN) ; Molendijk, John (CERN) ; Moody, Joshua (Munich, Max Planck Inst.) ; Muggli, Patric (Munich, Max Planck Inst.) ; Rey, Stephane (CERN) et al.
The Advanced Wakefield Experiment at CERN (AWAKE) requires two particle beams and a high power laser pulse to arrive simultaneously in a rubidium plasma cell. A proton bunch from the SPS extracted about once every 30 seconds must be synchronised with the AWAKE laser and the electron beam pulsing at a repetition rate of 10 Hz. [...]
CERN-ACC-2016-150.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPMY039 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMY039

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2016-08-12
06:32
Coaxial Wire Method Adapted to Weakly Coupled Resonator Mode for LHC RF Fingers Evaluation / Vollinger, Christine (CERN) ; Caspers, Fritz (CERN) ; Kaltenbacher, Thomas (CERN)
In high intensity particle accelerators, RF contact fingers are commonly used to carry the beam induced image current. In addition, they reduce beam impedance by shielding the outer bellows required to compensate mechanical displacements between components. [...]
CERN-ACC-2016-155.- 2016 - 3 p. - Published in : 10.18429/JACoW-IPAC2016-THPMY009 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMY009

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2016-08-12
06:32
CLIC Beam Delivery System Rebaselining and Long L* Lattice Optimization / Plassard, Fabien (CERN) ; Bambade, Philip (Orsay, LAL) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN)
This paper summarizes the re-optimization study made on the CLIC Beam Delivery System (BDS) in the framework of the rebaselining for beam collisions at 380 GeV for the initial energy stage. It describes the optimization process applied for the beam parameters as well as for the Final Focus system (FFS) lattice design with respect to the energy upgrade transition to 3 TeV. [...]
CERN-ACC-2016-172.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPMR045 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPMR045

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