Cryogenic hydrogen circulation system of neutron source
Cryogenic hydrogen circulation system of neutron source
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DOI：
10.1063/1.4860846
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发表时间：
2014-01
期刊：
影响因子：
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通讯作者：
Y. Qiu;Z. Hu;J. H. Wu;Q. Li;Y. Zhang;P. Zhang;G. P. Wang
中科院分区：
文献类型：
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作者：
Y. Qiu;Z. Hu;J. H. Wu;Q. Li;Y. Zhang;P. Zhang;G. P. Wang
反应堆冷中子源和散堆中子源是世界上运行的典型高通量中子源。低温流体如超临界或过冷氢通常被选择作为减速剂来吸收来自质子束的核加热。通过对超临界氢循环系统和过冷氢循环系统的比较，总结了两种系统的优缺点。当超临界氢作为慢化剂循环时，会发生由温度变化引起的严重压力波动。初步研究了由加热器作为热补偿的主动控制器和蓄能器作为被动容积控制器组成的用于平衡系统压力的压力控制系统。研究结果可为在建的其他中子源低温氢系统的设计和运行提供指导。
Cold neutron sources of reactors and spallation neutron sources are classic high flux neutron sources in operation all over the world. Cryogenic fluids such as supercritical or supercooled hydrogen are commonly selected as a moderator to absorb the nuclear heating from proton beams. By comparing supercritical hydrogen circulation systems and supercooled hydrogen circulation systems, the merits and drawbacks in both systems are summarized. When supercritical hydrogen circulates as the moderator, severe pressure fluctuations caused by temperature changes will occur. The pressure control system used to balance the system pressure, which consists of a heater as an active controller for thermal compensation and an accumulator as a passive volume controller, is preliminarily studied. The results may provide guidelines for design and operation of other cryogenic hydrogen system for neutron sources under construction.