Design of an energetic particle radiation diagnostic spectroscopy system based on national core chips and Qt on Linux in EAST

Ying-Ying Zheng; Zi-Han Zhang; Qiang Li; Hong-Rui Cao; Yong-Qiang Zhang; Jin-Long Zhao; Qi-Ping Yuan; Bing-Jia Xiao; Ling-Ling Yan; Jian-Qiu Zhu

doi:10.1007/s41365-021-00906-x

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Design of an energetic particle radiation diagnostic spectroscopy system based on national core chips and Qt on Linux in EAST

SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS | Updated：2021-08-05

- Design of an energetic particle radiation diagnostic spectroscopy system based on national core chips and Qt on Linux in EAST
- Nuclear Science and Techniques Vol. 32, Issue 7, Article number: 68(2021)
- Affiliations：
  
  1.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
  2.University of Science and Technology of China, Hefei 230026, China
  3.Hefei University of Technology, Hefei 230009, China
- Author bio：
  
  Corresponding author: caohr@ipp.ac.cn
- Funds：
- DOI：10.1007/s41365-021-00906-x
  CLC：
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Ying-Ying Zheng, Zi-Han Zhang, Qiang Li, et al. Design of an energetic particle radiation diagnostic spectroscopy system based on national core chips and Qt on Linux in EAST. [J]. Nuclear Science and Techniques 32(7):68(2021)
DOI：

Ying-Ying Zheng, Zi-Han Zhang, Qiang Li, et al. Design of an energetic particle radiation diagnostic spectroscopy system based on national core chips and Qt on Linux in EAST. [J]. Nuclear Science and Techniques 32(7):68(2021) DOI： 10.1007/s41365-021-00906-x.

摘要

Abstract

Energetic particle radiation diagnoses mainly detect the particles (such as neutrons, gamma rays, hard X-rays, and escaping electrons) that are radiated in the discharge process of the experimental advanced superconducting tokamak device to characterize the operating state of the plasma in real time. The upgrading of these diagnoses requires new instruments based on national (here, "national" means developed and produced by a Chinese company) core chips and open-source software with advanced digitization, a high sampling rate, and a high time resolution. The new spectroscopy system designed in this study adopts the national field-programmable gate array (FPGA) and an analog to digital converter as the core chip, and it is developed using Qt on Linux. The communication between the FPGA and embedded controller occurs via a high-speed peripheral component interconnect eXtension for instrument express protocol with a direct memory access mode. On this basis, the time resolution of the system is improved from 2 ms to 1 ms, the maximum channel address is increased to 4096, and the sampling rate is increased from 10 Msps to 80 Msps. Calibration experiments of the spectroscopy system with ,152,Eu and ,137,Cs sources demonstrate that the best energy resolution is 0.27% and the measurement error is less than ±0.5 keV.

关键词

Keywords

Spectroscopy systemNational chipQtEnergetic particle radiationExperimental advanced superconducting tokamak

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