Qualification of the Bypass Continuity of the Main Dipole Magnet Circuits of the LHC

Scott Rowan, Bernhard Auchmann, Krzysztof Brodzinksi, Zinour Charifoulline, B Panev, F Rodriguez-Mateos, Ivan Romera, Rudiger Schmidt, Andzej Siemko, Jens Steckert, Hughes Thiesen, Arjan Verweij, Gerard Willering, Hugh Pfeffer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


The copper-stabilizer continuity measurement (CSCM) was devised in order to attain complete electrical qualification of all busbar joints, lyres, and the magnet bypass connections in the 13 kA circuits of the LHC. A CSCM is carried out at ∼20 K, i.e., just above the critical temperature, with resistive magnets. The circuit is then subject to an incremental series of controlled powering cycles, ultimately mimicking the decay from nominal current in the event of a magnet quench. A type test to prove the validity of such a procedure was carried out with success in April 2013, leading to the scheduling of a CSCM on all main dipole circuits up to and including 11.1 kA, i.e., the current equivalent of 6.5 TeV operation. This paper details the procedure, with respect to the type test, as well as the results and analyses of the LHC-wide qualification campaign.
Original languageEnglish
Title of host publicationProceedings of the 6th International Particle Accelerator Conference (IPAC), (Richmond, VA, 3-8 May 2015)
Number of pages4
ISBN (Electronic)9783954501687
Publication statusPublished - May 2015
Externally publishedYes
Event6th International Particle Accelerator Conference - Thomas Jefferson National Acceleration Facility, Richmond, United States
Duration: 3 May 20158 May 2015
Conference number: 6


Conference6th International Particle Accelerator Conference
Abbreviated titleIPAC 2015
Country/TerritoryUnited States


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