Further experience with SLC permanent magnetic (PM) multipoles

Author

Spencer, James ; Mao, Stan ; Spencer, Chemll

Author_Institution

Magnetic Meas. Group, Stanford Linear Accelerator Center, Menlo Park, CA, USA

Volume

2

fYear

2003

fDate

12-16 May 2003

Firstpage

779

Abstract

PM multipoles have been used in the SLAC damping rings (DR) and their injection and extraction lines since 1985. Due to upgrades of the DR vacuum chambers for higher currents in 1993, there was an opportunity to check some of these magnets. Nothing more was done until a program of real-time radiation measurements was begun in the electron ring to determine causes, levels and effects of integrated gamma and neutron doses on the strengths and harmonic contents for NLC purposes. We discuss results of the latest magnetic measurements, radiation measurement program, semiconductor dosimeters and a few unexpected but interesting conclusions.

Keywords

accelerator magnets; electron accelerators; linear accelerators; particle beam dynamics; particle beam extraction; particle beam injection; permanent magnets; radiation detection; storage rings; DR vacuum chambers; PM multipoles; SLAC damping rings; SLC permanent magnetic multipoles; electron ring; extraction lines; gamma dose; injection lines; magnetic measurements; neutron dose; real-time radiation measurements; semiconductor dosimeters; Costs; Damping; Electronics cooling; Electrons; Magnetic semiconductors; Magnetic variables measurement; Magnets; Neutrons; Remote monitoring; Undulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289475

Filename

1289475