Magnetic measurements of the storage ring quadrupole magnets for the 7-GeV Advanced Photon Source

Author

Kim, S.H. ; Kim, K. ; Doose, C. ; Hogrefe, R. ; Merl, R.

Author_Institution

Argonne Nat. Lab., IL, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

2805

Abstract

The pre-production quadrupole magnet for the Advanced Photon Source (APS) storage ring has been tested. The multipole coefficients meet the tolerance requirements. The field-gradient integrals are measured relative to a reference quadrupole. By using two laser beam units, the magnetic and geometrical axes of the magnet are aligned within 0.2 mrad. The dependencies of the sextupole coefficient and the magnetic center on the excitation current are corrected by shunting the magnetic potentials of the top and bottom yokes

Keywords

beam handling equipment; electromagnets; electron accelerators; storage rings; 7 GeV; APS; Advanced Photon Source; bottom yoke; excitation current; field-gradient integrals; geometrical axes; laser beam units; magnetic center; magnetic measurements; magnetic potentials shunting; multipole coefficients; preproduction quadrupole magnet; reference quadrupole; sextupole coefficient; storage ring quadrupole magnets; tolerance requirements; top yoke; Coils; Energy measurement; Lamination; Laser beams; Magnetic field measurement; Magnetic variables measurement; Magnets; Probes; Storage rings; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309467

Filename

309467