Design optimization of 600 A-13 kA current leads for the Large Hadron Collider project at CERN

The requirements of the Large Hadron Collider project at CERN for high-temp erature superconducting (HTS) current leads have been widely publicized. CE RN require hybrid current leads of resistive and HTS materials with current ratings of 600 A, 6 kA and 13 kA. BICC General Superconductors, in collabo ration with the University of Southampton, have developed and manufactured prototype current leads for the Large Hadron Collider project. The resistiv e section consists of a phosphorus de-oxidized copper conductor and heat ex changer and the HTS section is constructed from BICC General's (Pb, Bi)2223 tapes with a reduced thermal conductivity Ag alloy sheath. We present the results of the materials optimization studies for the resistive and the HTS sections. Some results of the acceptance tests at CERN will be discussed.