NSLS-II BPM System Protection from Rogue Mode Coupling

Conference · Mon Mar 28 00:00:00 EDT 2011

OSTI ID:1012578

Blednykh, A; Bach, B; Borrelli, A; Ferreira, M; Hseuh, H -C; Hetzel, C; Kosciuk, B; Krinsky, S; Singh, O; Vetter, K

Rogue mode RF shielding has been successfully designed and implemented into the production multipole vacuum chambers. In order to avoid systematic errors in the NSLS-II BPM system we introduced frequency shift of HOM's by using RF metal shielding located in the antechamber slot of each multipole vacuum chamber. To satisfy the pumping requirement the face of the shielding has been perforated with roughly 50 percent transparency. It stays clear of synchrotron radiation in each chamber.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: DOE - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1012578
• Report Number(s): BNL-94856-2011-CP; 39KC0200; TRN: US1102320
• Resource Relation: Conference: PAC 2011; New York, NY; 20110328 through 20110328
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MULTIPOLES
PRODUCTION
PUMPING
SHIELDING
SYNCHROTRON RADIATION
Rogue mode RF
electron beam trajectory
trapezoidal area with a vertical aperture
national synchrotron light source