Analysis of MW-scale Beam Extraction of EAST Neutral Beam Injector Test-stand
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Neutral beam injection has been recognized as one of the most effective means for plasma heating. The preliminary data of 50 keV, 100 s and 80 keV, 1 s beam extraction have been obtained on the EAST neutral beam injector (NBI) test-stand. In this paper, beam energy distribution deposited on each heat load component and neutral efficiency of EAST-NBI has been measured using water-flow calorimetry and beam divergence angle and perveance have been analyzed according to the data obtained from the thermocouples installed in the calorimeters.
KeywordsBeam extraction Neutral beam Divergence angle Perveance
This work has been supported by the National Natural Science Foundation of China (Grant No. 11075183).
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