Zonal flow measurements using a heavy ion beam probe
Zonal flow measurements using a heavy ion beam probe
复制标题
使用重离子束探头进行层流测量
DOI：
10.1063/1.1534934
复制
发表时间：
2003
影响因子：
1.6
通讯作者：
Xiang Zhang
中科院分区：
文献类型：
--
作者：
P. Schoch;K. Connor;D. Demers;Xiang Zhang
磁约束等离子体中的带状流是研究磁约束等离子体输运问题的一个热点。在发展良好的诊断中，重离子束探针HIBP最适合于测量与当前中型到大型设备中的流相关联的径向电场Er。本文讨论了为什么HIBP能够测量Er和如何设计HIBP优化纬向流测量。文本HIBP被用作典型系统的示例。NSTX球形圆环用于未来工作的设计研究，重点是纬向流测量。关键的诊断考虑因素是（1）样本体积大小，（2）样本体积方向，以及（3）在径向方向上快速扫描样本体积的能力。这里本金利息的度量是Er，但在波动的非线性分析中有额外的信息。
Zonal flows are of keen interest in efforts to understand transport in magnetically confined plasma. Of the well-developed diagnostics, the heavy ion beam probe, HIBP, is most suited to measure the radial electric field, Er, associated with the flows in present medium to large devices. This paper discusses why the HIBP is capable of measuring Er and how to design a HIBP to optimize zonal flow measurements. The TEXT HIBP is used as an example of a typical system. The NSTX spherical torus is used in a design study for future work with emphasis on zonal flow measurements. The key diagnostic considerations are (1) sample volume size, (2) sample volume orientation, and (3) the ability to rapidly scan the sample volume in the radial direction. The measurement of principal interest here is Er but there is additional information in a nonlinear analysis of the fluctuations.