Calculation of prompt loss and toroidal field ripple loss under neutral beam injection on EAST
Calculation of prompt loss and toroidal field ripple loss under neutral beam injection on EAST
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DOI：
10.1088/1361-6587/59/2/025004
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发表时间：
2017-02
影响因子：
2.2
通讯作者：
Bin Wu;B. Hao;R. White;Jinfang Wang;Q. Zang;Xiaofeng Han;Chundong Hu
中科院分区：
文献类型：
--
作者：
Bin Wu;B. Hao;R. White;Jinfang Wang;Q. Zang;Xiaofeng Han;Chundong Hu
中性束注入是EAST实验阶段主要的辅助加热手段。本文用导引中心程序ORBIT和NUBEAM/TRANSP详细计算了不同等离子体平衡时的束流损失。增大等离子体电流可以显著降低束离子瞬发损耗和涟漪损耗。逆流束注入给出了一个更大的即时损失比共注入，和纹波引起的无碰撞随机扩散是主要的损失渠道。
Neutral beam injection is a major auxiliary heating method in the EAST experimental campaign. This paper gives detailed calculations of beam loss with different plasma equilibria using the guiding center code ORBIT and NUBEAM/TRANSP. Increasing plasma current can dramatically lower the beam ion prompt loss and ripple loss. Countercurrent beam injection gives a much larger prompt loss fraction than co-injection, and ripple-induced collisionless stochastic diffusion is the dominant loss channel.