Design of a high order Campbelling mode measurement system using open source hardware
Design of a high order Campbelling mode measurement system using open source hardware
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使用开源硬件设计高阶坎贝尔林模式测量系统
DOI：
10.1016/j.nima.2016.09.038
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
C. Jammes
中科院分区：
文献类型：
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作者：
G. D. Izarra;Z. Elter;C. Jammes
本文介绍了一种用于核反应堆裂变室中子在线监测的新型实时测量仪。该仪器在开放源码开发板上实现了更高阶的坎贝尔方法和自我监控功能。该测试板在芯片上集成了CPU/FPGA系统，并在带信号发生器的实验室和Minerve反应堆上验证了该测量仪的可行性。结果表明，该仪器能在较宽的反应堆功率范围内，根据裂变室信号的三阶统计量，提供可靠和稳健的计数率估计。此外，该系统能够识别测量的计数率变化是由于探测器的故障还是由于中子通量的变化。实用的自监测方法是基于裂变室信号的光谱特性。在实验验证过程中，考虑的故障是极化电压的变化。
This paper reviews a new real-time measurement instrument dedicated for online neutron monitoring with fission chambers in nuclear reactors. The instrument implements the higher order Campbelling methods and self-monitoring capabilities on an open source development board. The board includes an CPU/FPGA System on a Chip.The feasibility of the measurement instrument was tested both in laboratory with a signal generator and in the Minerve reactor. It is shown that the instrument provides reliable and robust count rate estimation over a wide reactor power range based on the third order statistics of the fission chamber signal. In addition, the system is able to identify whether the measured count rate change is due to the malfunction of the detector or due to the change in the neutron flux. The applied self-monitoring method is based on the spectral properties of the fission chamber signal. During the experimental verification, the considered malfunction was the change of the polarization voltage.