Design of a new photoelectric detection system for fast-ion Dα diagnostic on EAST

doi:10.16568/j.0254-6086.201903004

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2019, Vol. 39 ›› Issue (3): 215-220.DOI: 10.16568/j.0254-6086.201903004

• Plasma Physics • Previous Articles Next Articles

Design of a new photoelectric detection system for fast-ion D_α diagnostic on EAST

LIU Dong-mei1, LUO Fan1, CHANG Jia-feng2, HUANG Juan2, XIONG Kui3, ZHOU Feng3, YUE Chang-xi3, LI Zhi-cheng3

(1. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009; 2. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031; 3. Wuhan Branch, China Electric Power Research Institute, Wuhan 430071)

Online:2019-09-15 Published:2019-09-16

EAST 中快离子Dα 诊断光电检测系统的设计

刘冬梅1，骆凡1，常加峰2，黄娟2，熊魁 3，周峰 3，岳长喜 3，李智成3

(1. 合肥工业大学电气工程与自动化学院，合肥 230009；2. 中国科学院等离子体物理研究所，合肥 230031；3. 中国电力科学研究院武汉分院，武汉 430071)

作者简介:刘冬梅(1982-)，女，安徽合肥人，博士，从事托卡马克装置中光电检测和电磁诊断研究。
基金资助:
国家磁约束核聚变能发展研究专项(2014GB109004，2015GB102000，2015GB110005)；中国电力科学研究院创新基金(JL83-17-002)

Abstract

Abstract:

The D_α signal photoelectric detection system with high temporal and spatial resolution consists of 16 channels, each channel consists of a photomultiplier tube (PMT) and a current amplifier based on a sapphire material instead of a conventional printed circuit board. In order to enable the detection of the fast-ion D_α(FIDA) signal from other light sources of the same spectral range when a neutral beam is injected, the system parameters were designed with a total photon-to-voltage gain of 5.0×10⁹, the current amplifier with a current-to-voltage gain of 106V/A and a −3dB bandwidth at 500kHz. The EAST discharge experiment showed that the FIDA signal was well detected by this photoelectric detection system and the fast-ion properties were deduced from the Doppler shift spectrum of the D_α light.

Key words: EAST, Photoelectric detection system, Fast-ion D_α signal, Current amplifier

摘要：

设计了具有高时间和空间分辨率EAST 快离子D_α 的光电检测系统，它由16 路光电倍增管(PMT)和电流放大器(采用蓝宝石材料代替传统印刷板电路)构成。为了使快离子D_α (FIDA)信号在中性束注入时能从其他光源的在同一光谱范围内的谱线中检测出来，系统参数设计为整体光子-电压增益5.0×10⁹、电流放大器增益10⁶V/A、-3dB 带宽500kHz。实验结果表明，该光电检测系统可以很好的检测到快离子D_α(FIDA)信号，并有助于从D_α 光的多普勒偏移光谱推断快离子特性。

关键词: EAST；光电检测系统；快离子D_&alpha, 信号；电流放大器

CLC Number:

TL99

LIU Dong-mei1, LUO Fan1, CHANG Jia-feng2, HUANG Juan2, XIONG Kui3, ZHOU Feng3, YUE Chang-xi3, LI Zhi-cheng3. Design of a new photoelectric detection system for fast-ion D_α diagnostic on EAST[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(3): 215-220.

刘冬梅1，骆凡1，常加峰2，黄娟2，熊魁 3，周峰 3，岳长喜 3，李智成3. EAST 中快离子Dα 诊断光电检测系统的设计[J]. 核聚变与等离子体物理, 2019, 39(3): 215-220.

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Design of a new photoelectric detection system for fast-ion D_α diagnostic on EAST

EAST 中快离子Dα 诊断光电检测系统的设计

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