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设计一个高速数字系统的三重歧视基于Stilbene-6Li玻璃复合光探测器探测器
Qingyang Liu1, Jiaqi Wang1,2, Ye Chen1
1State Key Laboratory of Chemistry for NBC Hazards Protection, Beijing 102205, China.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
一个新的高速数字系统有效地区分快速中子,热中子和玛射线,使用一种stilbene-Li玻璃闪电器. 这种先进的系统为实时辐射检测和分析提供了稳定的性能.
科学领域:
- 核仪器仪表和核探测仪器
- 应用物理学的应用物理学
- 辐射检测和测量 辐射检测和测量
背景情况:
- 准确区分中子类型和玛射线对于各种应用,包括核安全和研究至关重要.
- 传统方法在实时处理和高速信号采集方面面临挑战.
- 复合晶器为辐射检测提供了增强的性能.
研究的目的:
- 设计和评估一个高速数字原型系统,用于区分快速中子,热中子和玛射线.
- 为了评估一个stilbene-6Li玻璃复合闪电器的脉冲形状歧视 (PSD) 性能.
- 开发一个具有成本效益的电子解决方案,用于中子探测器的实时信号处理.
主要方法:
- 作为中子探测器,使用了一种stilbene-6Li玻璃复合闪器.
- 采用了一个具有AD9434模拟数字转换器 (ADC) 和ZYNQ7020现场可编程网关阵列 (FPGA) 的高速采集板.
- 在各种采样速率下调查PSD性能,并使用马射线源进行能量校准.
主要成果:
- 在采样率高于250 MSPS时,实现了稳定的PSD性能.
- 对于中子/马区分的证明功效图 (FOM) 值:1.26 (快中子/γ),2.18 (快中子/热中子) 和3.25 (γ/热中子).
- 测量了常见马射线源的低错误报警率 (FAR) (例如,60Co的0.33%).
结论:
- 开发的高速数字系统成功地区分了快速中子,热中子和玛射线.
- 该系统集成了波形歧视和能量频谱测量,满足设计目标.
- 这为先进的中子检测应用提供了高性能,低成本的电子解决方案.
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