Cryogenic tests of the first two LHC quadrupole prototypes

Author

Genevey, P. ; Deregel, J. ; Perot, J. ; Rifflet, J.M. ; Vedrine, P. ; Cortella, J. ; Le Coroller, A. ; Rodriguez-Mateos, Felix ; Siegel, N. ; Tortschanoff, T. ; Verweij, A.P.

Author_Institution

CEA, Centre d´Etudes Nucleaires de Saclay, Gif-sur-Yvette, France

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

202

Lastpage

205

Abstract

Two LHC (Large Hadron Collider) twin aperture quadrupole superconducting magnet prototypes were constructed at CEA Saclay, in the framework of a collaboration agreement between CERN and CEA in Saclay. Their main characteristics are: 3.05 m length, 56 mm coil aperture, 180 mm between the two apertures, 252 T/m nominal gradient at 15060 A. They have been tested and measured in the 1.8 K Saclay test facility in a horizontal cryostat. The magnets are instrumented in order to investigate their behaviour during cool-down, stand-by, powering and current ramping, quenching and warming-up. The paper presents a summary of the cryogenic, mechanical, pressure and electrical measurements. The 15060 A nominal current was reached with little training. The quench protection heaters are efficient down to 3000 A. Losses during ramping up and down are reported.<>

Keywords

accelerator magnets; colliding beam accelerators; cryogenics; cryostats; proton accelerators; storage rings; superconducting device testing; superconducting magnets; synchrotrons; 1.8 K; 15060 A; 180 mm; 3.05 m; 56 mm; CEA Saclay; CERN; Large Hadron Collider; coil aperture; cool-down; cryogenic measurements; cryogenic tests; current ramping; electrical measurements; horizontal cryostat; losses; mechanical measurements; powering; pressure measurements; quench protection heaters; quenching; stand-by; superconducting magnets; twin aperture quadrupole magnets; warming-up; Apertures; Collaboration; Cryogenics; Large Hadron Collider; Length measurement; Prototypes; Superconducting coils; Superconducting magnets; Test facilities; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402524

Filename

402524