期刊论文

Investigation of energetic ion losses due to localized magnetic perturbations in tokamak

Xiang, D.

中文

核聚变与等离子体物理

0254-6086

2019

39

1

9-14

10.16568/j.0254-6086.201901002

2015GB110002:国家磁约束核聚变能发展研究专项 11605088:国家自然科学基金 11675073:国家自然科学基金 2015JJ2121:湖南省自然科学基金 2017JJ3268:湖南省自然科学基金 17C1354:湖南省教育厅项目

本校为第一且通讯机构

基于单粒子导心运动代码ORBIT,采用测试粒子模拟方法,研究了托卡马克等离子体内部不同径向位置处局域磁场扰动对高能量离子的损失的影响.研究表明,在局域磁扰动主要分布在某磁面附近、其环向具有类似纹波场形式下,可造成一些靠近等离子体中心区域的高能量离子损失,但对靠近等离子边界的离子损失影响相对不大.这些损失的高能量离子均为捕获离子,离子的投掷角越大就越容易损失.此外,造成高能量离子最大损失率的局域场径向位置与这些损失离子的初始径向位置通常存在一定的偏移,而且这个偏移与这些离子的能量密切相关.当局域场出现在某些位置时,能量较低的离子会有一定的损失,能量较高的离子反而不会...

Based on ORBIT code of a guiding center motion of single particle, the loss of energetic ions in different radial positions of tokamak plasma is studied by using test particle simulation method. The results show that the local magnetic perturbations can cause loss of many energetic ions near the central region of the plasma, but they have little effect on the ion loss near the plasma boundary, assuming that the local field is mainly located near a magnetic surface and its toroidal field is similar to the ripple field. These energetic ions are t...