Development of a fast electron bremsstrahlung diagnostic system based on LYSO and silicon photomultipliers during lower hybrid current drive for tokamak

Weiwei FAN (范伟伟); Bowen ZHENG (郑博文); Jing CAO (曹靖); Shibiao TANG (唐世彪); Qingwei YANG (杨青蔚); Zejie YIN (阴泽杰)

doi:10.1088/2058-6272/ab0a77

Plasma Science and Technology > 2019 > 21(6): 65104-065104. > DOI: 10.1088/2058-6272/ab0a77

Weiwei FAN (范伟伟), Bowen ZHENG (郑博文), Jing CAO (曹靖), Shibiao TANG (唐世彪), Qingwei YANG (杨青蔚), Zejie YIN (阴泽杰). Development of a fast electron bremsstrahlung diagnostic system based on LYSO and silicon photomultipliers during lower hybrid current drive for tokamak[J]. Plasma Science and Technology, 2019, 21(6): 65104-065104. DOI: 10.1088/2058-6272/ab0a77

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Development of a fast electron bremsstrahlung diagnostic system based on LYSO and silicon photomultipliers during lower hybrid current drive for tokamak

¹ State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
² Department of Modern Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
³ Southwestern Institute of Physics, Chengdu 610041, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (No. 11575184).

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Received Date: October 31, 2018

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Abstract

Abstract

A novel real time fast electron bremsstrahlung (FEB) diagnostic system based on the lutetium yttrium oxyorthosilicate scintillators (LYSO) and silicon photomultipliers (SiPM) has been developed for tokamak. The diagnostic system is dedicated to study the FEB emission in the hard x-ray (HXR) energy range between 10 and 200 keV during the lower hybrid current drive. The system consists of a detection module and three data acquisition and processing (DAP) boards. The detection module consists of annulus LYSO-SiPM detector array and a 12-channel preamplifier module. The DAP boards upload the data to the host computer for displaying and storing through PXI bus. The time and space resolutions of the system are 10 ms and 4cm, respectively. The experimental results can show the evolution over time and the spatial distribution of FEB. This paper presents the system performance and typical discharge results.
- diagnostic system,
- fast electron bremsstrahlung,
- hard x-ray,
- HL-2A tokamak

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Development of a fast electron bremsstrahlung diagnostic system based on LYSO and silicon photomultipliers during lower hybrid current drive for tokamak