Conductor limited quenches of LHC superconducting main dipoles

Author

Pojer, M. ; Pugnat, P. ; Siemko, A. ; Verweij, A. ; Vullierme, B.

Author_Institution

Eur. Lab. for Nucl. Res., CERN, Geneva, Switzerland

Volume

15

Issue

2

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

1554

Lastpage

1557

Abstract

In the framework of the series tests of superconducting magnets for the LHC, a special procedure was developed at CERN to perform conductor limited quenches at temperatures around 4.4 K. All results obtained on pre-series and series main dipoles tested to date will be presented with their analysis. These quenches allow fine diagnostics concerning the electrical integrity of the conductors and of the splices. They also allow the determination for each magnet of the temperature margin at nominal operating conditions of the LHC at superfluid helium. The comparison between the quench current and the critical current directly measured on short samples of superconducting cables used for the winding is discussed.

Keywords

colliding beam accelerators; critical currents; materials testing; proton accelerators; quenching (thermal); storage rings; superconducting cables; superconducting magnets; synchrotrons; CERN; LHC superconducting main dipole; Large Hadron Collider; conductor limited quenches; critical current; dipole testing; electrical integrity; quench current; superconducting cable; superconducting magnet; superfluid helium; Conductors; Critical current; Helium; Large Hadron Collider; Magnetic analysis; Performance analysis; Performance evaluation; Superconducting magnets; Temperature; Testing; Conductor limited quenches; critical current; large hadron collider; quench current; superconducting magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2005.849168

Filename

1439942