HL-2A装置快离子D_(α)诊断和模拟分析

Fast ion D_α diagnostic and simulations in the HL-2A tokamak

介绍了HL-2A装置上的快离子Dα(FIDA)诊断,并利用FIDASIM与TRANSP程序对快离子进行模拟分析,通过分析FIDA谱获得了快离子在相空间的分布。对模拟结果与实验结果进行对比,分析表明模拟得到的FIDA谱的演化趋势与实验吻合,验证了用TRANSP程序模拟的快离子分布的可靠性。

The fast ion D_α(FIDA) diagnostic in the HL-2A tokamak is introduced in this paper.The fast ion distribution in phase space is obtained by analyzing FIDA spectra with FIDASIM and TRANSP.A theoretical fast ion population calculated by the TRANSP code is input for the FIDASIM code.The collision-radiation model is solved by the FIDASIM code to obtain the theoretical FIDA spectrum.The comparative analysis of experimental and simulation results shows that the simulated FIDA spectrum evolution is consistent with the experimental result,therefore the fast ion distribution calculated by the TRANSP code is verified.