Nuclear Science and Techniques ›› 2019, Vol. 42 ›› Issue (2): 20501-020501.doi: 10.11889/j.0253-3219.2019.hjs.42.020501

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The R&D of 4H-SiC detector for laser plasma products measurement

Haijuan FU1,2,Linjun WANG1(),Hongwei WANG2(),Xiguang CAO2,Longxiang LIU2,Gongtao FAN2,Yugang MA2,Han XUE2,3,Yue ZHANG2,3,Xinrong HU2,3   

  1. 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
    2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2018-03-13 Revised:2018-12-04 Online:2019-02-10 Published:2019-02-19
  • Contact: Linjun WANG,Hongwei WANG E-mail:ljwang@t.shu.edu.cn;ljwang@t.shu.edu.cn;wanghongwei@sinap.ac.cn
  • About author:FU Haijuan, female, born in 1991, graduated from Heilongjiang University in 2015, master student, major in nuclear physics|FU Haijuan, female, born in 1991, graduated from Heilongjiang University in 2015, master student, major in nuclear physics|WANG Linjun, E-mail:<email>ljwang@t.shu.edu.cn</email>; WANG Hongwei, E-mail:<email>wanghongwei@sinap.ac.cn</email>
  • Supported by:
    Supported by National Natural Science Foundation of China (No.11475245, No.11305239),National Natural Science Fund for Creative Research Groups (No.11421505), Shanghai Light Source Beam Line Station Project (No.1173SRCZ01), Strategic Priority Research Program of Chinese Academy of Sciences (No.XDB160203)

Abstract: Background

In laser plasma nuclear physics experiments, products can be measured by pulse shape recording, time-of-flight (TOF) particle discrimination and pulse count rate measurements. However, high-radiation background caused by the strong laser makes strict requirements for detectors.

Purpose

This study aims to develop a 4H-SiC detector for laser plasma products TOF measurement in a high-radiation environment laser field and should detect many particle types with large energy dynamic range and fast time response conditions.

Methods

A new type of TOF 4H-SiC detector was developed using printed circuit board (PCB) board packaging technology with a sensitive thickness of 80 μm and direct waveform digital reading. Experimental tests were conducted to evaluate its performance in particle types detection with large energy dynamic range and fast time response conditions.

Results

The energy resolution was 1.19%@7 666.75 keV at 350~600 V full depletion voltage with standard α source (228Th, 226Ra).

Conclusion

The detector can work well in high intensity laser field with good characters of fast time response 2~3 ns and TOF particle discrimination.

Key words: 4H-SiC detector, Waveform digitizer, Energy resolution, TOF

CLC Number: 

  • O571.1