An isochronous lattice for PEP

Author

Corbett, W.J. ; Donald, M H R ; Garren, A.A.

Author_Institution

SLAC, Stanford, CA, USA

fYear

1991

fDate

6-9 May 1991

Firstpage

2868

Abstract

It is demonstrated that an isochronous lattice design is compatible with the Positron Electron Project (PEP) given a minimum of hardware modifications. The configuration is based on a succession of supercells (3 FODO cells each) with regions of negative dispersion and betatron phase advance between pairs of compensating sextupoles fixed at (2n+1) pi . The configuration requires no magnet relocations or quadrupole polarity reversals and does not exceed power load ratings for a 9-GeV beam. The theoretical bunch length is about 3.5 mm at 9 GeV (V/sub RF/= 15 MV), but smaller values could in principle be reached by correcting the longitudinal chromaticity with additional sextupole families.<>

Keywords

electron accelerators; storage rings; FODO cells; PEP; Positron Electron Project; betatron phase advance; compensating sextupoles; isochronous lattice design; longitudinal chromaticity; negative dispersion; power load ratings; quadrupole polarity reversals; supercells; Compaction; Electrons; Hardware; Laboratories; Lattices; Light sources; Linear accelerators; Magnets; Storage rings; Synchrotron radiation;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-0135-8

Type

conf

DOI

10.1109/PAC.1991.165130

Filename

165130