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The toroidal field system of the French tokamak TORE SUPRA is cooled by superfluid helium. A particular behaviour has been observed during safety discharges in one of the eighteen coils (BT13) of the system, in relation with a higher level of He II temperatures. Thanks to external temperature sensors and to the Gorter Mellink conduction in the cooling channels, it has been possible to make a thermal evaluation by a calorimetric method. An hypothesis for the defect inside the coil is presented and discussed taking into account a campaign of safety discharges performed in Summer 1993.

Additional information

Authors: DUCHATEAU J L, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR);RIBAND P, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Article: Cryogenics (1997)
Record Number: 199810156 / Last updated on: 1998-02-12
Original language: en
Available languages: en