The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Rowan, S. AU - Auchmann, B. AU - Brodzinski, K. AU - Charifoulline, Z. AU - Panev, B.I. AU - Pfeffer, H. AU - Rodriguez-Mateos, F. AU - Romera, I. AU - Schmidt, R. AU - Siemko, A.P. AU - Steckert, J. AU - Thiesen, H. AU - Verweij, A.P. AU - Willering, G.P. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Qualification of the Bypass Continuity of the Main Dipole Magnet Circuits of the LHC J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - 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. PB - JACoW CP - Geneva, Switzerland SP - 3141 EP - 3144 KW - dipole KW - operation KW - controls KW - experiment KW - cryogenics DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPHA017 UR - http://jacow.org/ipac2015/papers/wepha017.pdf ER -