13000 A current lead with 1.5 W heat load to 4.5 K for the large hadron collider at CERN

摘要

Cryogenic Ltd. and ENEL S.p.A. have collaborated on the design and construction of prototype current leads for the large hadron collider project at CERN, Geneva. This delivers a current of 13 kA into a 4.5 K liquid helium bath with a total heat load of 1.5 W. These leads transport the current via a resistive heat exchanger cooled by helium gas in the high-temperature region, and below 50 K via self-cooled high-temperature superconductor. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 3]