Active Damping of the E-P Instability at the LANL PSR
A prototype of an analog, transverse (vertical) feedback system for active damping of the two-stream (e-p) instability has been developed and successfully tested at the Los Alamos National Laboratory Proton Storage Ring (PSR). This system was able to improve the instability threshold by approximately 30% (as measured by the change in RF buncher voltage at instability threshold). Evidence obtained from these tests suggests that further improvement in performance is limited by beam leakage into the gap at lower RF buncher voltage and the onset of instability in the horizontal plane, which had no feedback. Here we describe the present system configuration, system optimization, results of several recent experimental tests, and results from studies of factors limiting its performance.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 919791
- Report Number(s):
- SLAC-PUB-13005; TRN: US0806492
- Resource Relation:
- Conference: Prepared for Particle Accelerator Conference (PAC 07), Albuquerque, New Mexico, 25-29 Jun 2007
- Country of Publication:
- United States
- Language:
- English
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Active damping of the e-p instability at the Los Alamos Proton Storage Ring
NEW DEVELOPMENTS ON THE E-P INSTABILITY AT THE PROTON STORAGE RING (PSR)