Kallman J, Jaworski M A, Kaita R, Kugel H, Gray T K
Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA.
Rev Sci Instrum. 2010 Oct;81(10):10E117. doi: 10.1063/1.3494381.
A high density Langmuir probe array has been developed for measurements of scrape-off layer parameters in NSTX. Relevant scale lengths for heat and particle fluxes are 1-5 cm. Transient edge plasma events can occur on a time scale of several milliseconds, and the duration of a typical plasma discharge is ∼1 s. The array consists of 99 individual electrodes arranged in three parallel radial rows to allow both swept and triple-probe operation and is mounted in a carbon tile located in the lower outer divertor of NSTX between two segments of the newly installed liquid lithium divertor. Initial swept probe results tracking the outer strike point through probe flux measurements are presented.
已开发出一种用于测量NSTX刮离层参数的高密度朗缪尔探针阵列。热通量和粒子通量的相关尺度长度为1-5厘米。瞬态边缘等离子体事件可能在几毫秒的时间尺度上发生，典型等离子体放电的持续时间约为1秒。该阵列由99个单独的电极组成，排列成三排平行的径向排，以实现扫描和三探针操作，并安装在位于NSTX下部外偏滤器中两块新安装的液态锂偏滤器之间的一块碳瓦上。给出了通过探针通量测量跟踪外打击点的初始扫描探针结果。
