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The large tokamaks JET, TFTR, JT-60, DIII-D and Tore Supra are machines capable of sustaining plasma currents of several million amperes. Pulse durations range from a few seconds up to a minute. These large machines have been in operation for several years and have been used to gain experience with materials for plasma facing components. Bare and coated metals, bare and coated graphites and beryllium were used for walls, limiters and divertors. High heat flux components are mainly radiation cooled, but stationary cooling for long pulse duration is also employed. This paper summarises the experience gained in these large machines with respect to material selection, component design, problem areas and plasma performance.

Additional information

Authors: DIETZ K J, JET Joint Undertaking, Abingdon, Oxon. (GB);CHAPPUIS P, CEA, Département de Recherches sur la Fusion Contrôlée, CEN Cadarache, Saint-Paul-lez-Durance (FR);HORIIKE H, Japan Atomic Energy Research Institute, Mukohyama, Naka-machi, Naka-gun, Ibaraki (JP);JACKSON G L, General Atomics, San Diego (US);ULRICKSON M, Princeton University, Plasma Physics Laboratory, Princeton (US)
Bibliographic Reference: Paper presented: International Symposium on Fusion Nuclear Technology, Karlsruhe (DE); June 2-7, 1991
Availability: Available from (1) as Paper EN 36293 ORA
Record Number: 199111128 / Last updated on: 1994-12-02
Original language: en
Available languages: en
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