Development of the W7-X Alkali Metal Beam Diagnostic Observation System for OP2

IF 0.5 Q4 NUCLEAR SCIENCE & TECHNOLOGY

Journal of Nuclear Engineering and Radiation Science Pub Date : 2023-01-18 DOI:10.3390/jne4010010

D. Nagy, S. Zoletnik, M. Otte, M. Vécsei, M. Krychowiak, R. König, D. Dunai, G. Anda, S. Hegedűs, B. Csillag, I. Katona

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引用次数: 1

Abstract

On a Wendelstein 7-X (W7-X), an alkali metal beam (AMB) diagnostic system was installed in order to measure the plasma edge electron density profiles and turbulence transport. A sodium beam was injected in the plasma, and the light emission was observed by an optical system. During the last operation phase, OP1.2b campaign trial spectral measurements were performed with a dedicated optical branch. The results showed the emergence of potential CX lines in the light spectra during sodium injection. The lines were identified as Carbon III, which were the dominant lines observed by other diagnostics at the edge plasma. Based on these results, an additional dedicated optical system was developed and installed in 2021 for the upcoming operational phase, OP2. The optics were designed for multiple purposes: spectral measurements for the AMB system and for a He/Ne gas jet. The system was designed to allow implementation of further diagnostics on this port later (e.g., coherence imaging system). The details of the implementation of the design requirements and the main challenges of the manufacturing process and installation are discussed in this paper.

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W7-X OP2碱金属光束诊断观测系统的研制

在Wendelstein 7-X (W7-X)上安装碱金属束(AMB)诊断系统，以测量等离子体边缘电子密度分布和湍流输运。在等离子体中注入钠束，用光学系统观察其发光情况。在最后一个操作阶段，op12 b战役试验光谱测量是用专用光学分支进行的。结果表明，在钠注入过程中，光谱中出现了潜在的CX线。这些系被鉴定为碳ⅲ系，这是其他诊断在边缘等离子体中观察到的优势系。基于这些结果，在2021年为即将到来的运营阶段OP2开发并安装了一个额外的专用光学系统。光学设计有多种用途:用于AMB系统的光谱测量和He/Ne气体射流。该系统的设计是为了允许以后对该端口进行进一步诊断(例如，相干成像系统)。本文详细讨论了设计要求的实现以及制造过程和安装过程中面临的主要挑战。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Nuclear Engineering and Radiation Science NUCLEAR SCIENCE & TECHNOLOGY-

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： The Journal of Nuclear Engineering and Radiation Science is ASME’s latest title within the energy sector. The publication is for specialists in the nuclear/power engineering areas of industry, academia, and government.