CERN Accelerating science

Article
Title	HTS Power Leads for the BTeV Interaction Region
Author(s)	Feher, Sandor ; Carcagno, Ruben H ; Orris, Darryl ; Pishchalnikov, Yu M ; Rabehl, Roger Jon ; Sylvester, C D ; Tartaglia, M ; Tompkins, John
Affiliation	(Fermilab, Batavia, Illinois)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.1147
Subject category	Accelerators and Storage Rings
Abstract	A new Interaction Region for the BTEV experiment is planned to be built soon at Fermilab. This IR will require new superconducting quadrupole magnets and many additional power circuits for their operation. The new "low beta" quadupole magnet design is based upon the Fermilab LHC quadrupole design, and will operate at 9.56 kA in 4.5 K liquid helium. The use of conventional power leads for these circuits would require substantially more helium for cooling than is available from the cryogenic plant, which is already operating close to its limit. To decrease the heat load and helium cooling demands, the use of HTS power leads is necessary. Fermilab is in the process of procuring HTS leads for this new interaction region. Several 6 kA HTS leads produced by American Superconductor Corporation have been tested at over-current conditions. Based on the test results, design requirements are being developed for procuring the HTS current leads. This paper summarizes the test results and describes the design requirements for the 9.65 kA HTS power leads.