大学物理 ›› 2023, Vol. 42 ›› Issue (1): 19-.doi: 10.16854/j.cnki.1000-0712.220131

• 物理实验 • 上一篇    下一篇

基于Pixie-net 数字化仪的位置灵敏塑料闪烁体谱仪

倪磊,夏博龙,楼建玲,许金艳   

  1. 北京大学 物理学院,北京100871
  • 收稿日期:2022-03-11 修回日期:2022-05-05 出版日期:2023-03-14 发布日期:2023-03-13
  • 通讯作者: 楼建玲,E-mail: jllou@pku.edu.cn
  • 作者简介:倪磊(1998—),男,青海西宁人,北京大学物理学院技术物理系,在读博士研究生,主要从事实验核物理相关研究.
  • 基金资助:
    国家自然科学基金(11775004, U1867214)以及北京大学理学部教学改革经费(7100901620)资助

Position sensitive plastic scintillator spectrometer based on Pixie-net digitizer

NI Lei,XIA Bo-long,LOU Jian-ling,XU Jin-yan   

  1. School of Physics, Peking University, Beijing 100871, China 
  • Received:2022-03-11 Revised:2022-05-05 Online:2023-03-14 Published:2023-03-13

摘要: 基于高度集成的Pixie-net 数字化仪,本实验利用长为1 m的塑料闪烁体谱仪测量了60Co源的能谱. 利用能谱上康普顿平台半高位置对长塑料闪烁体进行了位置刻度,结果表明刻度位置与放射源实际位置的偏差约为1~2 cm. 本实验的结果还说明Pixie-net 数字化仪拥有较强的信号处理能力,可以替代传统电子学的QDC(电荷数字转换),实现长塑料闪烁体的幅度信号定位功能.

关键词: Pixie-net 数字化仪, 塑料闪烁体, 康普顿散射 

Abstract: The energy spectrum of a 60Co source is measured by a 1-meter long plastic scintillator with a highly integrated Pixie-net digitizer. The position of the long plastic scintillator is calibrated by using the half-height position of Compton platform of 60Co sources. It is found that the difference between the calibration results and the actual position of radiation source is about 1~2 cm. The experimental results also show that the Pixi-net digitizer has strong ability to process the amplitude of a signal, and can replace QDC in the experiment of position sensitive plastic scintillator spectrometer.

Key words: Pixie-net digitizer, plastic scintillator, compton scattering