Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Materials and Energy Pub Date : 2024-10-12 DOI:10.1016/j.nme.2024.101770

Fang Ding, Qing Zhang, Zhenhua Hu, Bingcheng Qi, Lingyi Meng, Rui Ding, Liang Wang, Chenyuan Zhang, Zhongshi Yang, Haishan Zhou, Youwen Sun, Guang-nan Luo, Jiansheng Hu

{"title":"Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST","authors":"Fang Ding, Qing Zhang, Zhenhua Hu, Bingcheng Qi, Lingyi Meng, Rui Ding, Liang Wang, Chenyuan Zhang, Zhongshi Yang, Haishan Zhou, Youwen Sun, Guang-nan Luo, Jiansheng Hu","doi":"10.1016/j.nme.2024.101770","DOIUrl":null,"url":null,"abstract":"<div><div>EAST has been upgraded with top and bottom tungsten divertors to facilitate the high power long pulse operation. A visible spectroscopy diagnostic has been developed progressively to monitor W source as well as line emissions from other particles (e.g., D, He, Li, B, C, N, O, Ne, Ar, Mo, D<sub>2</sub>, WD) in the divertors. Two sets of lens installed in mid-plane port view tangentially the top and bottom divertors, respectively. Two types of optical fibers transfer the plasma light collected by the lens to three different detecting modules. High spectral resolution (λ/Δλ ∼ 14000) can be achieved by the detecting module consisting of spectrometer and Electron-Multiplying Charge Coupled Device (EMCCD), high temporal resolution (50 μs) is obtained by filtered photoelectric multiplier (PMT), and high spatial resolution (1 mm) is acquired by Complementary Metal-Oxide-Semiconductor Transistor (CMOS) camera with collimation optics. The multichannel optical fiber array with 500 μm core diameter is used to connect the lens and the first two detecting modules. The imaging fiber bundle with 30 μm core diameter transmits the two-dimensional divertor plasma light to the third detecting module, i.e. collimation optics and CMOS camera. The diagnostic is operated automatically in normal EAST discharges to support experimental operation and divertor physics study. The paper presents a technical description of the diagnostic and typical measurements during EAST discharges.</div></div>","PeriodicalId":56004,"journal":{"name":"Nuclear Materials and Energy","volume":"41 ","pages":"Article 101770"},"PeriodicalIF":2.3000,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Materials and Energy","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352179124001935","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

EAST has been upgraded with top and bottom tungsten divertors to facilitate the high power long pulse operation. A visible spectroscopy diagnostic has been developed progressively to monitor W source as well as line emissions from other particles (e.g., D, He, Li, B, C, N, O, Ne, Ar, Mo, D₂, WD) in the divertors. Two sets of lens installed in mid-plane port view tangentially the top and bottom divertors, respectively. Two types of optical fibers transfer the plasma light collected by the lens to three different detecting modules. High spectral resolution (λ/Δλ ∼ 14000) can be achieved by the detecting module consisting of spectrometer and Electron-Multiplying Charge Coupled Device (EMCCD), high temporal resolution (50 μs) is obtained by filtered photoelectric multiplier (PMT), and high spatial resolution (1 mm) is acquired by Complementary Metal-Oxide-Semiconductor Transistor (CMOS) camera with collimation optics. The multichannel optical fiber array with 500 μm core diameter is used to connect the lens and the first two detecting modules. The imaging fiber bundle with 30 μm core diameter transmits the two-dimensional divertor plasma light to the third detecting module, i.e. collimation optics and CMOS camera. The diagnostic is operated automatically in normal EAST discharges to support experimental operation and divertor physics study. The paper presents a technical description of the diagnostic and typical measurements during EAST discharges.

查看原文本刊更多论文

通过 EAST 上的可见光谱诊断仪监测分流器钨源

EAST 已升级为顶部和底部钨分流器，以促进高功率长脉冲运行。已逐步开发出一种可见光谱诊断方法，用于监测 W 源以及分流器中其他粒子（如 D、He、Li、B、C、N、O、Ne、Ar、Mo、D2、WD）的线发射。安装在中平面端口的两组透镜分别从切线方向观察顶部和底部分流器。两种光纤将透镜收集到的等离子体光传输到三个不同的探测模块。由光谱仪和电子多重电荷耦合器件（EMCCD）组成的探测模块可实现高光谱分辨率（λ/Δλ ∼ 14000），滤波光电倍增器（PMT）可获得高时间分辨率（50 μs），带准直光学器件的互补金属氧化物半导体晶体管（CMOS）相机可获得高空间分辨率（1 mm）。纤芯直径为 500 μm 的多通道光纤阵列用于连接镜头和前两个检测模块。芯径为 30 μm 的成像光纤束将二维分流器等离子体光传输到第三个检测模块，即准直光学器件和 CMOS 摄像机。诊断仪在正常 EAST 放电时自动运行，以支持实验操作和分流器物理研究。本文介绍了诊断仪的技术说明和 EAST 放电期间的典型测量结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.