9月11日 五室第149期研讨会

　　题 目: 共振磁扰动作用下的中性束快离子输运

　　报告人：胡友俊

　　主持人：周 登

　　时 间：2020年9月11日（星期五） 14:00—15:30

　　地 点：601会议室

　　摘 要：A Monte-Carlo code modeling continuous neutral beam injection, ionization, and the resulting fast ions transport was developed and applied to calculate the steady state distribution of neutral beam fast ions under the influence of resonant magnetic perturbations (RMPs) in the EAST tokamak. Simulations indicate that RMPs enhance the edge loss of fast ions, and this effect reduces the fast ion steady-state stored energy for most RMP up-down phases. However, for some RMP phases in which the loss fraction is small (still larger than the case without RMP), the fast ion stored energy is increased relatively to the case without RMPs, which does not agree with our usual expectation. We found that the increase in the stored energy is due to the increase of the slowing-down time when RMPs are imposed. Using a semi-analytical theory, we reproduced the simulation results, giving us confidence in the conclusion。

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