在探测器 (HAD) 中基于导热的:设计,仪器仪表的开发和性能评估
I Lakshmigandhan1, S Premalatha1, E Prabhu1
1Materials Chemistry and Metal Fuel Cycle Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India.
The Review of scientific instruments
|December 20, 2023
概括
在探测器 (HAD) 中的被改进为冷快速增殖反应器. 温度校正显著降低了噪音,提高了气检测极限,在气覆盖气中达到30ppm.
科学领域:
- 核工程 核工程是指核工程.
- 分析化学 分析化学
- 传感器技术 传感器技术
背景情况:
- 用冷却的快速增殖反应堆 (SFR) 需要精确监测覆盖气体成分.
- 探测对于SFR环境中的安全性和运营效率至关重要.
- 在探测器 (HAD) 中的传统上面临着噪音和灵敏度的挑战.
研究的目的:
- 为了提高灵敏度和减少探测器 (HAD) 中的中的噪声.
- 改进SFR的气覆盖气体中的检测极限.
- 为工业应用开发一个更强大的HAD系统.
主要方法:
- 利用Wheatstone的桥梁电路来测量和+H2混合物之间的导热差异.
- 实现了恒流源以稳定桥梁输出,将当前的RMS噪声降低到±1μA.
- 在处理器内应用温度校正因子,以减轻环境温度变化.
主要成果:
- 在温度校正后,HAD信号中的RMS噪声从±230 mV降低到±2.4 mV.
- 实现了显著提高中的检测极限,降至30ppm (3σ).
- 证明了降噪技术在提高探测器性能方面的有效性.
结论:
- 实施的降噪策略,特别是温度校正,大大提高了HAD的性能.
- 增强的HAD系统为SFR覆盖气体中气监测提供了更可靠的方法.
- 改进的检测极限有助于更早,更准确地识别出的存在.
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