Stability of a NbTi forced-cooled superconducting coil by subcooled supercritical helium

Wachi, Y.; Shimada, M.; Hamajima, T.; Yamaguchi, M.

doi:10.1109/20.119980

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Cited by 6 publications

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“…We have studied the effects of subcooling for stability and quenching characteristics of a NbTi forced-cooled coil [4]. In this work, to predict the stability margin and limiting current of a coil at a certain temperature, we made a test coil and tested it at lower supercritical helium temperature.…”

Section: Introductionmentioning

confidence: 99%

Stability characteristics of a cable-in-conduit conductor by subcooled supercritical helium

et al. 1994

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Ahshmk--The stability and limiting current of a NbTi forced-cooled superconducting coil have been investigated experimentally and analytically at the subcooled condition below 4.5 K. The test coil was wound in a one layer solenoid from a cable-in-conduit type conductor of critical current of 5.1 kA at 4.2 K and 6.5 T, whose total length was 10 m. It was installed in the bore of a back-up superconducting magnet that provided field 8 T at the test coil. The stability margin of the coil as a function of normalized current (transport current/critical current) were measured. The results are compared with the formula proposed by Dresner and reported to predictions of stability margin and limiting current at subcooled condition below 4.5 K.

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Section: Introductionmentioning

confidence: 99%