Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER-like wall in JET

Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER-like wall in JET

Effect of the minority concentration on ion cyclotron resonance heating in presence of the ITER-like wall in JET 150 150 Mathew

The most recent JET campaign has focused on characterizing operation with the "ITER-like" wall. One of the questions that needed to be answered is whether the auxiliary heating methods do not lead to unacceptably high levels of impurity influx, preventing fusion-relevant operation. In view of its high single pass absorption, hydrogen minority fundamental cyclotron heating in a deuterium plasma was chosen as the reference wave heating scheme in the ion cyclotron domain of frequencies. The present paper discusses the plasma behavior as a function of the minority concentration X[H] in L-mode with up to 4MW of RF power.

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01/01/2014