Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6743802 | Fusion Engineering and Design | 2017 | 5 Pages |
Abstract
GA has completed the design and is now installing and commissioning the Final Test Facility at the CSM Manufacturing site in Poway, California. The facility includes a number of critical subsystems. The test chamber system consists of a 160Â m3 liquid nitrogen shielded cryostat to support the 110-t CSM, a vacuum pumping and leak detection system and Paschen testing equipment. The feeder system connects the test chamber to the cryogenic and electrical systems. It includes a coil termination box (CTB), high temperature superconducting current leads and a superconducting feeder duct. The cryosystem provides refrigeration and circulates supercritical helium at 4.5Â K for cooling the CSM and 50Â K helium gas for cooling the current leads. The electrical system includes a DC power supply providing 48.5Â kA of current and a fast discharge system used for quench protection. The fast discharge system uses redundant DC breakers based on vacuum circuit breaker switching and a 1 Giga-Joule discharge resistor to absorb the stored energy in the coil with a 6Â s decay time.
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Authors
K. Schaubel, A. Langhorn, S. Lloyd, Z. Piec, E. Salazar, J. Smith,