Abstract

The results of the analysis of the accuracy of measuring the flux density of all hydrogen isotopes from the first wall of the main vacuum chamber to the ITER tokamak plasma using the high-resolution spectroscopy of Balmer alpha lines of hydrogen isotopes (H-alpha diagnostics) are presented. Under the conditions of the expected high background radiation generated by the divertor stray light and the absence of the possibility of using the optical dumps in ITER, a differential measurement scheme is necessary, which uses the spatial variation of the coefficient of the light reflection from the natural landscape of the first wall. The measurement accuracy analysis is carried out with the help of the method of synthetic diagnostics, which uses the results of the predictive numerical modeling of different modes of hydrogen recycling for simulation of the expected diagnostic signals and determination of the desired parameters by solving an inverse problem.

中文翻译：

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使用ITER中的H-α诊断技术测量从第一壁到血浆的所有氢同位素的通量密度的准确性分析

摘要

使用高分辨率氢同位素巴尔默阿尔法谱线测量从主真空腔室第一壁到ITER托卡马克等离子体的所有氢同位素通量密度的准确性分析结果（H-alpha诊断）被提出。在预期由偏滤器杂散光产生的高背景辐射的情况下，以及在ITER中不可能使用光学倾卸装置的情况下，必须采用差分测量方案，该方案利用了来自ITER的光反射系数的空间变化。第一堵墙的自然景观。借助综合诊断方法进行测量精度分析，