| EAST �п�����Dα ��Ϲ����ϵͳ����� |
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| 引用本文： | ����÷����,�������ӷ�����,������,��,����,��,������ϲ,�����dz�.EAST �п�����Dα ��Ϲ����ϵͳ�����[J].核聚变与等离子体物理,2006,39(3):215-220. |
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| 作者姓名： | ����÷���� �������ӷ����� ������ �� ���� �� ������ϲ �����dz� |
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| 作者单位： | (1. ?????????????????????????????? 230009??2. ?й??????????????????о???????? 230031??3. ?й?????????о???人??????人 430071) |
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| 摘 要： |
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Design of a new photoelectric detection system for fast-ion Dα diagnostic on EAST |
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| LIU Dong-mei,LUO Fan,CHANG Jia-feng,HUANG Juan,XIONG Kui,ZHOU Feng,YUE Chang-xi,LI Zhi-cheng.Design of a new photoelectric detection system for fast-ion Dα diagnostic on EAST[J].Nuclear Fusion and Plasma Physics,2006,39(3):215-220. |
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| Authors: | LIU Dong-mei LUO Fan CHANG Jia-feng HUANG Juan XIONG Kui ZHOU Feng YUE Chang-xi LI Zhi-cheng |
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| Institution: | (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) |
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| Abstract: | The Dα 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 Dα (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 Dα light. |
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