800MHz Crab Cavity Conceptual Design For the LHC Upgrade

Conference · Tue May 26 00:00:00 EDT 2009

OSTI ID:953496

Xiao, Liling; Li, Zenghai; Ng, Cho-Kuen; Seryi, Andrei

In this paper, we present an 800 MHz crab cavity conceptual design for the LHC upgrade. The cell shape is optimized for lower maximum peak surface fields as well as higher transverse R/Q. A compact coax-to-coax coupler scheme is proposed to damp the LOM/SOM modes. A two-stub antenna with a notch filter is used as the HOM coupler to damp the HOM modes in the horizontal plane and rejects the operating mode at 800MHz. Multipacting (MP) simulations show that there are strong MP particles at the disks. Adding grooves along the short axis without changing the operating mode's RF characteristics can suppress the MP activities. Possible input coupler configurations are discussed.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 953496
• Report Number(s): SLAC-PUB-13648; TRN: US1000836
• Resource Relation: Conference: Contributed to Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ANTENNAS
CERN LHC
DESIGN
FILTERS
PARTICLES
SUPERCONDUCTING CAVITY RESONATORS
Accelerators
Computing
ACCPHY
COMP