文献类型：期刊文献

中文题名：Numerical study of alpha particle loss with toroidal field ripple based on CFETR steady-state scenario

英文题名：Numerical study of alpha particle loss with toroidal field ripple based on CFETR steady-state scenario

作者：Li, Niuqi[1,2];Xu, Yingfeng[1,2];Zhong, Fangchuan[1,2];Zhang, Debing[3]

机构：[1]Donghua Univ, Coll Sci, Shanghai 201620, Peoples R China;[2]Minist Educ, Magnet Confinement Fus Res Ctr, Shanghai 201620, Peoples R China;[3]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China

年份：2024

卷号：33

期号：1

中文期刊名：Chinese Physics B

外文期刊名：CHINESE PHYSICS B

收录：CSTPCD;;EI(收录号：20240315398457);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:001136600000001)】；CSCD:【CSCD2023_2024】；PubMed;

基金：The authors are very grateful for the help of the CFETR team. Project supported by the National Natural Science Foundation of China (Grant Nos. 12175034 and 12005063), the National Key Research and Development Program of China (Grant No. 2019YFE03030001), and the Fundamental Research Funds for the Central Universities (Grant No. 2232022G-10).

语种：英文

中文关键词：alpha particle loss;ripple;orbit-following;tokamak

外文关键词：alpha particle loss; ripple; orbit-following; tokamak; 52.65.-y; 52.55.Fa; 96.50.Vg

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.
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.