Title :
Short Circuit Localization in the LHC Main Dipole Coils by Means of Room Temperature Magnetic Measurements
Author :
Bellesia, B. ; Molinari, G. ; Santoni, C. ; Scandale, W. ; Todesco, E.
Author_Institution :
CERN, Geneva
fDate :
6/1/2006 12:00:00 AM
Abstract :
During the construction of the LHC main dipoles, 12 cases of short circuits between the cables of the superconducting coils have been detected. Some of them appeared only under the press, making impossible their localization after disassembly. In this paper we describe a method to locate electrical shorts through the use of room temperature magnetic measurements. An example case is discussed in detail to illustrate the features of the approach, and a statistic of the cases met during the production of more that 70% of the dipole total quantity is presented
Keywords :
magnetic field measurement; proton accelerators; short-circuit currents; storage rings; superconducting coils; superconducting magnets; synchrotrons; 293 to 298 K; LHC main dipole coils; electrical shorts; field quality; room temperature magnetic measurements; short circuit localization; superconducting coils; superconducting magnets; Apertures; Cables; Large Hadron Collider; Magnetic circuits; Magnetic field measurement; Magnetic variables measurement; Steel; Superconducting coils; Superconducting magnets; Temperature measurement; Field quality; stainless steel collars; superconducting magnets; warm magnetic measurements;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.870504
