Relationship between Former Strain and Stability of Superconducting Solenoid

To investigate the relationship between former strain and stability of a superconducting solenoid, a test coil was constructed and was applied to a training test. In this test, time dependences of the former circumferential strain εθ and quench currents Iq were measured. Iq decreased at the next que...

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Bibliographic Details
Published inTEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan) Vol. 29; no. 12; pp. 653 - 658
Main Authors MORIYAMA, Hideshige, SEKIYA, Hiroki, MITSUI, Hisayasu, IWAMOTO, Akifumi, NISHIJIMA, Shigehiro, OKADA, Toichi
Format Journal Article
LanguageEnglish
Published CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN 1994
Subjects
former strain
quench
stability
superconducting
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Summary:To investigate the relationship between former strain and stability of a superconducting solenoid, a test coil was constructed and was applied to a training test. In this test, time dependences of the former circumferential strain εθ and quench currents Iq were measured. Iq decreased at the next quenches, when the residual compressive strain εθR of the former occurred at the previous quench. Especially when the coil emerged from boiling helium at a quench, the absolute value of εθR increased, and Iq remarkably decreased at the next quench. These occurrences of εθR could be ascribed to fast change of the Lorents force and thermal condition at the quenches.
ISSN:0389-2441
1880-0408
DOI:10.2221/jcsj.29.653