Set-up of PEP-II Longitudinal Feedback Systems for Even/Odd Bunch Spacings | Zendy

D. Teytelman | Zendy

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Set-up of PEP-II Longitudinal Feedback Systems for Even/Odd Bunch Spacings

Author(s) -

D. Teytelman

Publication year - 2002

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1524435

Subject(s) - physics , bunches , collider , storage ring , process (computing) , set (abstract data type) , ring (chemistry) , control system , charge (physics) , computer science , radio frequency , particle accelerator , nuclear physics , electrical engineering , particle physics , beam (structure) , optics , telecommunications , operating system , electron , programming language , chemistry , organic chemistry , engineering

Feedback systems installed for control of coupled-bunch longitudinal instabilities in PEP-II collider have been designed to process bunch data at one half of the ring RF frequency. As a result these systems are ideally suited for controlling ring lls where only even or only odd RF buckets are populated (even bunch spacings). However in the operation of PEP-II per bunch charge considerations require ll patterns that alternately populate even and odd buckets. In this note we present a technique that allows to use existing hardware to provide feedback control of all bunches in such lls.

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