Electrical Integrity Tests During Production of the LHC Dipoles

Author

de Rijk, G. ; Bajko, M. ; Cornelis, M. ; Fessia, P. ; Miles, J. ; Modena, M. ; Molinari, G. ; Rinn, J. ; Savary, F. ; Vlogaert, J.

Author_Institution

CERN, Geneva

Volume

16

Issue

2

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

200

Lastpage

203

Abstract

For the LHC dipoles , mandatory electrical integrity tests are performed to qualify the cold mass (CM) at four production stages: individual pole, collared coil, CM before end cover welding and final CM. A description of the measurement equipment and its recent development are presented. After passing the demands set out in the specification, the results of the tests are transmitted to CERN where they are further analyzed. The paper presents the most important results of these measurements. We also report a review of the electrical nonconformities encountered e.g. inter-turn shorts and quench heater failure, their diagnostic and the cures

Keywords

accelerator magnets; mass production; production control; proton accelerators; storage rings; superconducting coils; superconducting magnets; synchrotrons; CERN; LHC dipole production; cold mass before end cover welding; collared coil; electrical integrity tests; production control; production stages; quench heater failure; review; superconducting accelerator magnets; Circuit testing; Coils; Current measurement; Frequency; Impedance measurement; Large Hadron Collider; Mass production; Performance evaluation; Power measurement; Voltage; Production control; superconducting accelerator magnets;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2006.870501

Filename

1642825