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Title: Computer modelling of bunch-by-bunch feedback for the SLAC B-factory design

The SLAC B-factory design, with over 1600 high current bunches circulating in each ring, will require a feedback system to avoid coupled-bunch instabilities. A computer model of the storage ring, including the RF system, wave fields, synchrotron radiation loss, and the bunch-by-bunch feedback system is presented. The feedback system model represents the performance of a fast phase detector front end (including system noise and imperfections), a digital filter used to generate a correction voltage, and a power amplifier and beam kicker system. The combined ring-feedback system model is used to study the feedback system performance required to suppress instabilities and to quantify the dynamics of the system. Results are presented which show the time development of coupled bunch instabilities and the damping action of the feedback system. 3 refs., 5 figs., 2 tabs.
Authors:
; ; ; ; ; ;  [1] ;  [2]
  1. (Stanford Linear Accelerator Center, Menlo Park, CA (USA))
  2. (Lawrence Berkeley Lab., CA (USA))
Publication Date:
OSTI Identifier:
5731116
Report Number(s):
SLAC-PUB-5466; LBL--30772; CONF-910505--105
ON: DE91012968
DOE Contract Number:
AC03-76SF00515
Resource Type:
Conference
Resource Relation:
Conference: 1991 Institute of Electrical and Electronics Engineers (IEEE) particle accelerator conference (PAC), San Francisco, CA (USA), 6-9 May 1991
Research Org:
Stanford Linear Accelerator Center, Menlo Park, CA (USA)
Sponsoring Org:
DOE; USDOE, Washington, DC (USA)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BEAM BUNCHING; FEEDBACK; MESON FACTORIES; B MESONS; COMPUTERIZED SIMULATION; INSTABILITY; KICKER MAGNETS; RF SYSTEMS; STANFORD LINEAR ACCELERATOR CENTER; ACCELERATORS; BEAM DYNAMICS; BOSONS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; ELEMENTARY PARTICLES; EQUIPMENT; HADRONS; MAGNETS; MESONS; NATIONAL ORGANIZATIONS; PSEUDOSCALAR MESONS; SIMULATION; US DOE; US ERDA; US ORGANIZATIONS 430200* -- Particle Accelerators-- Beam Dynamics, Field Calculations, & Ion Optics