Article ID Journal Published Year Pages File Type
6743802 Fusion Engineering and Design 2017 5 Pages PDF
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 160 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 4.5 K for cooling the CSM and 50 K helium gas for cooling the current leads. The electrical system includes a DC power supply providing 48.5 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 6 s decay time.
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Physical Sciences and Engineering Energy Energy Engineering and Power Technology
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