Investigating the possibility of a monitoring fast ion diagnostic for ITER.

摘要: In burning plasma fusion devices, fast ion transport plays a central role in the performances of machines. Moreover losses energetic particles might cause severe damages on facing components. Therefore real time measurements would provide valuable information for safe and reliable operations. this paper, we examine feasibility monitoring system based active charge exchange recombination spectroscopy making use 0.5MeV∕amu ITER heating neutral beams detecting He+24 (alphas) plasmas. There are two scales relevant to dynamics: first is slowing down distribution function which order 1s, second scale burstlike events such as collective Alfven mode excitations, which—for typical parameters—can be low 0.2–1ms. To detect broadband high-throughput spectrometer needed, while reconstruction the...