Analysis of MW-scale Beam Extraction of EAST Neutral Beam Injector Test-stand
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- Xu, Y., Hu, C., Xie, Y. et al. J Fusion Energ (2013) 32: 589. doi:10.1007/s10894-013-9620-2
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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.