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Performance Issues for Actuators and Internal Components During Long Pulse Operation on Tore Supra

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1 Author(s)
Bucalossi, J. ; IRFM, CEA, St. Paul-lez-Durance, France

In a fusion device, long pulse operation adds a set of specific constraints on actuators and internal components. Some of these issues are analyzed through the 20-year experience of Tore Supra which is, to date, the largest Tokamak that is able to run long-duration discharges (hundreds of seconds). Superconducting magnet operation, RF heating and current drive, and particle fuelling issues are discussed. The impact on operation of the actively cooled environment is also assessed. Material erosion and fuel retention results showed the limits of the carbon as armor material for a fusion reactor. Real-time survey of the surface temperature of critical components integrated into the plasma control systems allows for safe operation at ITER relevant heat fluxes and accurate scenario control close to the limits.

Published in:

Plasma Science, IEEE Transactions on  (Volume:38 ,  Issue: 3 )

Date of Publication:

March 2010

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