Perturbation of relevant resonance for slow extraction efficiency increase

Author

Alexeev, N.N. ; Bereznitsky, S.L. ; Bolshakov, A.E.

Author_Institution

ITEP, Moscow, Russia

Volume

1

fYear

1997

fDate

12-16 May 1997

Firstpage

261

Abstract

In a synchrotron, slow extraction of a circulating beam when influenced by a nonlinear perturbation was analysed both analytically and by computer simulation. It was found that beam loss on the septum may be reduced twice and more if the particle distribution in the cross section of the kicker magnet is deformed with decapole perturbation of a sextupole magnetic field used for resonance excitation. A similar effect is observed for gradient resonance extraction with octupole perturbation. Results of simulation for the ITEP PS slow extraction system are presented

Keywords

particle beam dynamics; particle beam extraction; perturbation theory; resonance; storage rings; synchrotrons; ITEP; beam loss; circulating beam; computer simulation; decapole perturbation; gradient resonance extraction; octupole perturbation; resonance excitation; septum; slow extraction; slow extraction system; synchrotron; Computer simulation; Harmonic analysis; Magnetic analysis; Magnetic fields; Magnetic resonance; Magnetic separation; Motion analysis; Particle beams; Particle scattering; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1997. Proceedings of the 1997

Conference_Location

Vancouver, BC

Print_ISBN

0-7803-4376-X

Type

conf

DOI

10.1109/PAC.1997.749612

Filename

749612