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Runaway electron damage to the Tore Supra Phase III outboard pump limiter by R. Nygren; T. Lutz; D. Walsh; G. Martin; M. Chatelier; T. Loarer; D. Guilhem is a Materials Science article available to read on EtoBox.

What is Runaway electron damage to the Tore Supra Phase III outboard pump limiter about?

Operation of the Phase III outboard pump limiter (OPL) in Tore Supra in 1994 was terminated prematurely when runaway electrons generated during the current decay following a disruption pierced a leading edge tube on the electron side and caused a water leak. The location, about 20 mm outside the last closed flux surface during normal operation, and the infrared (IR) images of the limiter indicate that the runaways moved in large outward steps, i.e., tens of millimeters, in one toroidal revolution. For plasma (runaway) currents in the range of 150 to 250 kA, the drift orbits open to the outside. Basic trajectory computations suggest that such motion is possible under the conditions present for this experiment. Activation measurements made on sections of the tube to indicate the area of local damage are presented here. An understanding of this event may provide important guidance regarding potential damage from runaways in future tokamaks.

Who reads Runaway electron damage to the Tore Supra Phase III outboard pump limiter?

Author

R. Nygren; T. Lutz; D. Walsh; G. Martin; M. Chatelier; T. Loarer; D. Guilhem

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-3115)

Published

1997

Language

EN

Field

Materials Science (Physical Sciences)