FPGA implementation of 500-MHz high-count-rate high-time-resolution real-time digital neutron-gamma discrimination for fast liquid detectors

IF 3.6 1区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Nuclear Science and Techniques Pub Date : 2024-07-24 DOI:10.1007/s41365-024-01441-1

Hui-Yin Shen, Jing-Long Zhang, Jie Zhang, Jian-Hang Zhou

引用次数: 0

Abstract

Fast neutron flux measurements with high count rates and high time resolution have important applications in equipment such as tokamaks. In this study, real-time neutron and gamma discrimination was implemented on a self-developed 500-Msps, 12-bit digitizer, and the neutron and gamma spectra were calculated directly on an FPGA. A fast neutron flux measurement system with BC-501A and EJ-309 liquid scintillator detectors was developed and a fast neutron measurement experiment was successfully performed on the HL-2 M tokamak at the Southwestern Institute of Physics, China. The experimental results demonstrated that the system obtained the neutron and gamma spectra with a time accuracy of 1 ms. At count rates of up to 1 Mcps, the figure of merit was greater than 1.05 for energies between 50 keV and 2.8 MeV

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用于快速液体探测器的 500-MHz 高计数率高时间分辨率实时数字中子伽马判别的 FPGA 实现

具有高计数率和高时间分辨率的快速中子通量测量在托卡马克等设备中有着重要的应用。在这项研究中，实时中子和伽马分辨是在自主开发的 500-Msps 12 位数字转换器上实现的，中子和伽马光谱直接在 FPGA 上计算。利用 BC-501A 和 EJ-309 液体闪烁探测器开发了快中子通量测量系统，并在中国西南物理研究院的 HL-2 M 托卡马克上成功进行了快中子测量实验。实验结果表明，该系统获得中子和伽马能谱的时间精度为 1 毫秒。在计数率高达 1 Mcps 的情况下，能量在 50 keV 至 2.8 MeV 之间的优越性大于 1.05。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Science and Techniques 物理-核科学技术

CiteScore

5.10

自引率

39.30%

发文量

141

审稿时长

5 months

期刊介绍： Nuclear Science and Techniques (NST) reports scientific findings, technical advances and important results in the fields of nuclear science and techniques. The aim of this periodical is to stimulate cross-fertilization of knowledge among scientists and engineers working in the fields of nuclear research. Scope covers the following subjects: • Synchrotron radiation applications, beamline technology; • Accelerator, ray technology and applications; • Nuclear chemistry, radiochemistry, radiopharmaceuticals, nuclear medicine; • Nuclear electronics and instrumentation; • Nuclear physics and interdisciplinary research; • Nuclear energy science and engineering.