Test results of the prototype combined sextupole-dipole corrector magnet for LHC

Author

Ijspeert, A. ; Perin, R. ; Walckiers, L. ; Baynham, E. ; Clee, P. ; Coombs, R. ; Begg, M. ; Landgrebe, D.

Author_Institution

CERN, Geneva, Switzerland

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

773

Lastpage

776

Abstract

The corrector magnet for the Large Hadron Collider (LHC) contains a 1.5-T dipole for orbit correction and a 8000 T/m/sup 2/ sextupole for chromaticity correction. The dipole has for compactness been mounted around the sextupole coil. A full-scale prototype of 1.3-m length has been fabricated and tested. The coils were first tested at 4.2 K. It appeared that the training of the impregnated coils could be strongly reduced by increasing the radial precompression. The coils were subsequently cooled to the operational temperature between 1.8 and 2 K and the field quality was measured with a harmonic rotating coil. The results of the tests show that the combined dipole-sextupole corrector magnet does meet the desired field strengths.<>

Keywords

beam handling equipment; proton accelerators; superconducting magnets; synchrotrons; 1.8 to 2.0 K; 4.2 K; LHC; Large Hadron Collider; chromaticity correction; compactness; field quality; field strengths; full-scale prototype; harmonic rotating coil; impregnated coils; operational temperature; orbit correction; prototype combined sextupole-dipole corrector magnet; radial precompression; sextupole coil; training; History; Insulation; Laboratories; Large Hadron Collider; Prototypes; Superconducting coils; Superconducting filaments and wires; Superconducting magnets; Temperature; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233818

Filename

233818