Test of 1 m long model magnets for LHC

Author

Billan, J. ; Gregory, C.R. ; Legrand, P. ; Oberli, L. ; Verweij, A.P. ; Walckiers, L.

Author_Institution

CERN, Geneva, Switzerland

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

362

Lastpage

365

Abstract

Power tests and magnetic measurements have been performed on various 1-m-long LHC (Large Hadron Collider) dipole model magnets. Single- and twin-aperture magnets were energized up to peak fields above 9 T. Quench behavior, improvements in the test facility, and losses in the superconductors were examined. The field quality was measured with rotating coils immersed directly in the 1.8 K bath of the vertical cryostat. The design of these coils and the achieved measurement precision are presented. Preliminary measurements of the persistent currents show an unexpected time-dependent decay of the field harmonics

Keywords

beam handling equipment; magnetic fields; proton accelerators; superconducting magnets; synchrotrons; test facilities; 1 m; 1.8 K; 9 T; LHC dipole model magnet; Large Hadron Collider; coil design; field harmonic decay; field quality; magnetic measurements; measurement precision; persistent currents; power tests; quench behaviour; rotating coils; single aperture magnets; superconductor losses; test facility; twin-aperture magnets; vertical cryostat; Large Hadron Collider; Magnetic field measurement; Magnetic variables measurement; Magnets; Performance evaluation; Rotation measurement; Superconducting coils; Superconductivity; Test facilities; Testing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.119886

Filename

119886