Controlling field quality in magnet production

Author

Bottura, L. ; Devred, Arnaud ; Remondino, V. ; Sanfilippo, S. ; Scandale, W. ; Todesco, E. ; Vollinger, C. ; Wildner, E.

Author_Institution

CERN, Geneva, Switzerland

Volume

1

fYear

2003

fDate

12-16 May 2003

Firstpage

173

Abstract

The field quality measurements at room temperature of around 100 collared coils of the main LHC dipoles are analysed. Using correlations to field measurements at 1.9 K, comparison with beam dynamics limits are discussed. Both random and systematic components are analysed, allowing to pin out the most critical multipoles. Corrective actions that have been taken during the pre-series phase are presented; we focus on the low order systematic multipoles that are shown to be the most difficult components to steer. A preliminary analysis of the integrated main field and of its implications on the possible scenarios for the installation are also carried out.

Keywords

accelerator magnets; proton accelerators; superconducting magnets; 1.9 K; LHC dipoles; controlling field quality; low order systematic multipoles; magnet production; Assembly; Coils; Large Hadron Collider; Magnetic analysis; Magnetic field measurement; Magnetic variables measurement; Production; Quality control; Temperature measurement; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1288871

Filename

1288871