中国物理B ›› 2024, Vol. 33 ›› Issue (1): 15202-15202.doi: 10.1088/1674-1056/ad03de
Niuqi Li(李钮琦)1,2, Yingfeng Xu(徐颖峰)1,2,†, Fangchuan Zhong(钟方川)1,2, and Debing Zhang(张德兵)3
Niuqi Li(李钮琦)1,2, Yingfeng Xu(徐颖峰)1,2,†, Fangchuan Zhong(钟方川)1,2, and Debing Zhang(张德兵)3
摘要: Effects of plasma equilibrium parameters on the alpha particle loss with the toroidal field ripple based on the CFETR steady-state scenario have been numerically investigated by the orbit-following code GYCAVA. It is found that alpha particle losses decrease and loss regions become narrower with the plasma current increasing or with the magnetic field decreasing. It is because the ripple stochastic transport and the ripple well loss of alpha particle are reduced with the safety factor decreasing. Decrease of the plasma density and temperature can reduce alpha particle losses due to enhancement of the slowing-down effect. The direction of the toroidal magnetic field can significantly affect heat loads induced by lost alpha particle. The vertical asymmetry of heat loads induced by the clockwise and counter-clockwise toroidal magnetic fields are due to the fact that the ripple distribution is asymmetric about the mid-plane, which can be explained by the typical orbits of alpha particle. The maximal heat load of alpha particle for the clockwise toroidal magnetic field is much smaller than that for the counter-clockwise one.
中图分类号: (Plasma simulation)