Design, manufacture and performance of the LEP magnetic lenses

Author

Remondino, V. ; Verbeeck, T. ; Walckiers, L. ; Wolf, R. ; Wyss, C.

Author_Institution

CERN, Geneva, Switzerland

Volume

24

Issue

2

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

1342

Lastpage

1345

Abstract

The series production of a total of 814 quadrupole magnets of two types for the Large Electron Positron accelerator is approaching its end as is the production of 510 sextupole magnets, also of two types. After a review of the design of these lenses, the experience gained during their manufacture is discussed. The results of systematic measurements of their excitation characteristics and field quality are linked to the quality of the low-carbon steel sheet used for their magnetic circuits and to that of the geometry achieved in the assembly of the magnets.

Keywords

beam handling techniques; electromagnets; electron accelerators; magnetic lenses; particle accelerator accessories; storage rings; Large Electron Positron accelerator; assembly; design; excitation characteristics; field quality; low-carbon steel sheet; magnetic circuits; magnetic lenses; manufacture; performance; quadrupole magnets; sextupole magnets; Accelerator magnets; Electron accelerators; Lenses; Magnetic circuits; Magnetic field measurement; Manufacturing; Optical design; Positrons; Production; Steel;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.11487

Filename

11487