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Measurement performance assessment for the ITER CXRS Edge diagnostic system
Review of Scientific Instruments ( IF 1.6 ) Pub Date : 2021-05-07 , DOI: 10.1063/5.0042029
S V Serov 1 , M De Bock 2 , M G von Hellermann 3 , S N Tugarinov 1
Affiliation  

Measurement performance assessment has been carried out for the latest design of the ITER Charge Exchange Recombination Spectroscopy (CXRS) Edge diagnostic system. Several plasma scenarios, covering all expected baseline operation regimes for ITER, were used. Various impurity (He, Be, C, and Ne) concentrations for the system whole spatial range (0.5 < r/a < 1.0) were considered. Statistical errors for the measurements of low-Z impurity temperature, density, and rotation velocity were calculated. Other non-statistical error sources were reviewed, including the presence of wall reflections, effects on the active charge-exchange line shape, calibration, and positioning uncertainties. Minimal impurity concentrations, allowing measurements with required accuracy, were obtained. It was shown that the CXRS Edge system will be able to measure primary plasma parameters with required accuracy, space, and time resolution.

中文翻译:

ITER CXRS Edge 诊断系统的测量性能评估

对最新设计的 ITER 电荷交换复合光谱 (CXRS) 边缘诊断系统进行了测量性能评估。使用了几种等离子体场景,涵盖了 ITER 的所有预期基线操作制度。系统整个空间范围内的各种杂质(He、Be、C 和 Ne)浓度 (0.5 < r / a< 1.0) 被考虑。计算了低 Z 杂质温度、密度和旋转速度测量的统计误差。审查了其他非统计误差源,包括壁反射的存在、对有源电荷交换线形状的影响、校准和定位不确定性。获得了最低的杂质浓度,允许以所需的精度进行测量。结果表明,CXRS Edge 系统将能够以所需的精度、空间和时间分辨率测量初级等离子体参数。
更新日期:2021-05-28
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