An Over-damped Cavity Longitudinal Kicker for the PEP-II LER

Technical Report · Wed Jul 30 00:00:00 EDT 2003

DOI:https://doi.org/10.2172/815603· OSTI ID:815603

McIntosh, P ^[1]

---

1. SLAC

Both rings of PEP-II use drift tube kickers in the longitudinal bunch-by-bunch feedback system. Efforts are now underway to increase the stored beam currents and luminosity of PEP-II, and beam-induced heating of these structures, particularly in the Low Energy Ring (LER) is of concern. An alternative kicker design based on the over-damped cavity kicker, first developed by INFN-Frascati is being built for PEP-II. This low loaded Q (or wide bandwidth) structure is fed by a network of ridged waveguides coupled to a simple pill-box cavity. Beam induced RF power is also coupled out of the cavity to external loads, so that the higher order modes (HOMs) excited in the structure are well-damped. This paper details the kicker design for PEP-II and discusses some of the design trade-offs between shunt impedance and bandwidth, as well as the influence of the feedthroughs on the kicker parameters. Estimates of the expected power deposition in the cavity are also provided.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (US)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 815603
• Report Number(s): SLAC-PUB-10087
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
BEAM CURRENTS
BEAM LUMINOSITY
DAMPING
DESIGN
DRIFT TUBES
FEEDBACK
KICKER MAGNETS
PEP STORAGE RINGS
WAVEGUIDES