Persistent currents in LHC magnets

Author

Wolf, R.

Author_Institution

CERN, Geneva, Switzerland

Volume

28

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

374

Lastpage

377

Abstract

The field errors due to persistent currents in LHC (Large Hadron Collider) dipoles, quadrupoles, and correction windings are discussed. The errors due to variations in the magnetization are shown to be significant. The author discusses the influence of magnetic cycling, the contribution of the different parts of the dipole winding, and simple scaling with coil radius and field. The partial cancellation of the sextupole and decapole in the different winding regions indicates that an effort should be made to study other coil geometries. The calculations made show the importance of using magnet poles with the same magnetization

Keywords

beam handling equipment; magnetic fields; magnetisation; proton accelerators; superconducting magnets; synchrotrons; LHC magnets; Large Hadron Collider; coil geometries; correction windings; decapole cancellation; dipole magnets; field errors; magnetic cycling; magnetization variations; persistent currents; quadrupole magnets; scaling; sextupole cancellation; Iron; Large Hadron Collider; Magnetic analysis; Magnetic shielding; Magnetization; Persistent currents; Superconducting coils; Superconducting magnets; Temperature; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.119889

Filename

119889