Interaction Region RF Shield Issues(LCC-0059)

Technical Report · Wed Dec 03 00:00:00 EST 2003

DOI:https://doi.org/10.2172/826618· OSTI ID:826618

Stupakov, G

The NLC ZDR [1] called for an rf shield in the IR that extended from the end of the final quadrupole towards the IP. In addition, the ZDR specified an rf septum that partially covered the quadrupole exit face. The rf shield and septum were proposed to reduce possible wakefield effects in the IR including rf heating as well as beam deflections. However, the rf shield is a significant source of backgrounds due to the scattering of the e{sup +}e{sup -} pairs from the IP. There are four issues to consider when discussing the need for an rf shield: parasitic beam-beam collisions, short-range wakefields, multi-bunch wakefields, and heating.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 826618
• Report Number(s): SLAC-TN-03-064; TRN: US0403442
• Resource Relation: Other Information: PBD: 3 Dec 2003
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
LINEAR COLLIDERS
RF SYSTEMS
SHIELDS
HEATING
ELECTRON-POSITRON INTERACTIONS
SCATTERING