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Title: Recommendation for the Feasibility of more Compact LC Damping Rings

Recommendation for the Feasibility of more Compact LC Damping Rings As part of the international Linear Collider (ILC) collaboration, we have compared the electron cloud (EC) effect for different Damping Ring (DR) designs respectively with 6.4 km and 3.2 km circumference and investigated the feasibility of the shorter damping ring with respect to the electron cloud build-up and related beam instabilities. The studies for a 3.2 km ring were carried out with beam parameters of the ILC Low Power option. A reduced damping ring circumference has been proposed for the new ILC baseline design SB2009 [1] and would allow considerable reduction of the number of components, wiggler magnets and costs. We discuss the impact of the proposed operation of the ILC at high repetition rate 10 Hz and address the necessary modifications for the DRs. We also briefly discuss the plans for future studies including the luminosity upgrade option with shorter bunch spacing, the evaluation of mitigation techniques and the integration of the CesrTA results into the Damping Ring design.
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Publication Date:
OSTI Identifier:OSTI ID: 982081
Report Number(s):SLAC-PUB-14122
TRN: US1004366
DOE Contract Number:AC02-76SF00515
Resource Type:Conference
Resource Relation:Journal Name: Conf.Proc.C100523:wepe097,2010; Conference: Presented at 1st International Particle Accelerator Conference: IPAC'10, Kyoto, Japan, 23-28 May 2010
Research Org:SLAC National Accelerator Laboratory (SLAC)
Sponsoring Org:National Science Foundation (NSF);US DOE Office of Science (DOE SC)
Country of Publication:United States
Language:English
Subject: 43 PARTICLE ACCELERATORS; ACCELERATORS; CLOUDS; DAMPING; DESIGN; ELECTRONS; EVALUATION; LINEAR COLLIDERS; LUMINOSITY; MITIGATION; MODIFICATIONS; RECOMMENDATIONS; WIGGLER MAGNETS Accelerators,ACCPHY, COMP