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Abstract

This paper describes the Junction JC3 inserted between the cryogenic connection lines and the cold box of the helium refrigerator. Each component of the JC3 is flexible and electrical breaks insulate the refrigerator from the tokamak. Two concentric pipes, carrying the superfluid helium supply, are located on the axis of the line. These are surrounded by two concentric thermal shields, each connected to four cooling tubes, the inner set working at 4.5 K, the outer at 80 K. Each of these ten pipes, surrounded by vacuum, operates with internal helium pressures of between 1.2 kPa and 1.8 MPa.

Additional information

Authors: BON MARDION G, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);GRAVIL B, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);JAGER B, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Article: Proceedings of the International Cryogenic Engineering Conference and International Cryogenic Materials Conference, Kiev, Ukraine, June 8-12, 1992
Record Number: 199211038 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en
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