Study on Implementation Method of Deep Subcritical Rod Worth Measurement Electronics
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摘要: 为实现深度次临界刻棒计算所需数据的有效采集，研究并设计了深度次临界刻棒电子学的总体架构及关键模块，通过堆上试验对关键模块特性进行了测试。结果表明，所设计的深度次临界刻棒电子学能够有效测量经过约200 m电缆传输后的探测器信号，脉冲信号波形宽度稳定，信噪比水平良好；所测得的高压坪特性曲线可以为探测器高压选取提供有效参考；所测得的甄别特性曲线稳定，能有效获取探测器信号中的中子成分。Abstract: In order to realize the effective acquisition of data required for deep subcritical rod worth calculation, the overall architecture and key modules of deep subcritical rod worth measurement electronics have been researched and designed. The characteristics of the key modules have been tested through reactor test. The results show that the designed deep subcritical rod worth measurement electronics can effectively measure the detector signal transmitted through about 200 m cable. The pulse signal has a stable waveform width and a proper signal-to-noise ratio. The measured high voltage plateau characteristic curve can provide an effective reference for the high voltage selection of the detector. The measured discrimination characteristic curve is stable, from which the neutron component in the detector signal can be effectively obtained.
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Key words:
- Deep subcritical /
- Electronics /
- Reactor test
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图 1 深度次临界刻棒电子学总体架构
Figure 1. Overall Architecture of Deep Subcritical Rod Worth Measurement Electronics
图 2 宽频带低噪声前级放大器功能原理图
Figure 2. Functional Schematic Diagram of Wideband Low Noise Preamplifier
图 3 直流高压电源功能原理图
Figure 3. Functional Schematic Diagram of High Voltage DC Power Supply
图 4 典型探测器脉冲信号波形图（高压1000 V）
Figure 4. Waveform of Typical Detector Pulse Signal (at the High Voltage of 1000 V)
表 1 深度次临界刻棒电子学噪声情况
Table 1. Noise of Deep Subcritical Rod Worth Measurement Electronics
参数名 参数值 甄别阈电压值/V 0.01 0.02 0.03 计数率/s−1 14046 30 0 
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[1] 田阳,王义,李元景,等. 一种用于放大快速小信号的电流灵敏型前置放大器甄别器的研制[J]. 核电子学与探测技术,2009(2): 386-389. doi: 10.3969/j.issn.0258-0934.2009.02.038 [2] 王亚平,蔡勖. ALICE实验中同轴电缆的信号传输特性的研究[J]. 核电子学与探测技术,2006(2): 195-198. doi: 10.3969/j.issn.0258-0934.2006.02.019 [3] LESCOP B, NORMAND S, TRAMA J C, et al. A new system for in-core wide range neutron monitoring[C]. Roma, Italy: IEEE Symposium Conference Record Nuclear Science, 2004. [4] 包超,高志宇,罗庭芳,等. 基于数值微分的核脉冲信号数字处理方法[J]. 核动力工程,2020, 41(1): 150-153. -
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