J-TEXT 托卡马克高速单色成像系统研制

doi:10.16568/j.0254-6086.202101005

核聚变与等离子体物理 ›› 2021, Vol. 41 ›› Issue (1): 26-32.DOI: 10.16568/j.0254-6086.202101005

J-TEXT 托卡马克高速单色成像系统研制

张巍巍 1，程芝峰*1，张晓龙 2，焦少东 1，张霄翼 1，J-TEXT 团队 1

(1. 华中科技大学电气与电子工程学院磁约束聚变与等离子体国际合作联合实验室，武汉 430074；
2. 深圳大学物理与光电工程学院新能源研究中心，深圳 518060)

收稿日期:2019-06-11 修回日期:2020-06-30 出版日期:2021-03-15 发布日期:2022-01-18
作者简介:张巍巍(1994-)，男，山西临汾人，硕士研究生，电气工程专业。
基金资助:
国家重点研发计划(2017YFE0301802，2017YFE0301803)

Development of high speed monochrome imaging system on J-TEXT tokamak

ZHANG Wei-wei1, CHENG Zhi-feng1, ZHANG Xiao-long2, JIAO Shao-dong1,ZHANG Xiao-yi1, J-TEXT team1

(1. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074;
2. Advanced Energy Research Center, Shenzhen University, Shenzhen 518060)

Received:2019-06-11 Revised:2020-06-30 Online:2021-03-15 Published:2022-01-18

摘要/Abstract

摘要： 在 J-TEXT 托卡马克上研制了一套高速单色成像系统用于研究等离子体杂质行为与磁流体力学(MHD)
不稳定性之间的关系。用 STRAH 代码模拟估算了碳杂质(CV227.09nm，CIII464.7nm)辐射强度。采用光纤耦合方
法设计了系统光路结构，光路覆盖高场侧区域 0.3a~0.95a(a 为小半径)，其空间分辨率为 1.3cm。选用光电倍增管
(PMT)作为系统的探测器，结合跨阻电路与有源滤波器的电路方案，系统实现 5×10⁵VA^-1 电流增益，其电路带宽
为 100kHz，时间分辨率达到 10μs。初步实验结果表明，系统可以监测到 J-TEXT 中等离子体 MHD 不稳定性放电
中 CV 分布的变化。

关键词: 单色成像；杂质辐射；MHD 不稳定性；光电倍增管

Abstract: The high-speed monochrome imaging system on J-TEXT tokamak was developed to study the
relationship between plasma impurity behavior and magnetohydrodynamics (MHD) instability. Intensity
distributions of carbon impurity radiation (CV 227.09nm, CIII 464.7nm) were simulated with STRAH code. The
optical path structure of the system was designed with fiber coupling method, whose survey range is 0.3a-0.95a
(minor radius) on the high field side and its spatial resolution is 1.3cm. A photomultiplier tube (PMT) is selected
as detector, whose output current signal is amplified with transimpedance circuit and active filter circuit with 10
microseconds of time resolution in 100kHz bandwidth. The experimental results show that the evolution of carbon
impurities is surveyed under plasma discharge with MHD instability.

Key words: Monochromatic imaging, Impurity radiation, MHD instability, Photomultiplier tube

中图分类号:

TL65+2

张巍巍, 程芝峰, 张晓龙, 焦少东, 张霄翼, J-TEXT 团队 . J-TEXT 托卡马克高速单色成像系统研制[J]. 核聚变与等离子体物理, 2021, 41(1): 26-32.

ZHANG Wei-wei, CHENG Zhi-feng, ZHANG Xiao-long, JIAO Shao-dong, ZHANG Xiao-yi, J-TEXT team . Development of high speed monochrome imaging system on J-TEXT tokamak[J]. Nuclear Fusion and Plasma Physics, 2021, 41(1): 26-32.

参考文献

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J-TEXT 托卡马克高速单色成像系统研制

Development of high speed monochrome imaging system on J-TEXT tokamak

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