Failure Probability Estimation of Multi-walled Vessels for Mercury Target
Failure Probability Estimation of Multi-walled Vessels for Mercury Target
复制标题
汞靶多壁容器失效概率估计
DOI：
10.1080/18811248.2007.9711842
复制
发表时间：
2007
影响因子：
1.2
通讯作者：
S. Ishikura
中科院分区：
文献类型：
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作者：
T. Wakui;M. Futakawa;H. Kogawa;S. Ishikura
一种用于兆瓦级脉冲散裂中子源的液态汞靶正在研制中。对将安装在日本质子加速器研究综合体(J-PARC)材料和生命科学设施中的水银靶进行了失效概率分析，考虑了各种载荷引起的应力条件以及中子辐照和点蚀损伤导致的材料退化。汞靶由多壁容器、汞容器和安全船体组成，以防止汞向外泄漏，即与汞接触的汞容器被安全船体覆盖。在预期设计寿命内，安全船体的失效概率估计低于10−6。另一方面，汞容器在汞中直接受到热冲击压力波的破坏概率随着运行时间和质子束功率的增加而增加，估计在MW级靶的设计寿命内约为99.9%。
A liquid mercury target for MW-class pulse spallation neutron sources is being developed. Failure probability analyses on the mercury target that will be installed at the material and life science facility in the Japan Proton Accelerator Research Complex (J-PARC) were carried out taking account of the stress condition caused by various types of loading and material degradation due to neutron irradiation and pitting damages. The mercury target consists of multi-walled vessels; a mercury vessel and a safety hull, to prevent mercury leakage to the outside, i.e., the mercury vessel that is in contact with mercury is covered by the safety hull. The failure probability of the safety hull was estimated to be lower than 10−6 for the expected designed lifetime. On the other hand, the failure probability of the mercury vessel directly subjected to thermally shocked pressure waves in mercury increased with the operation time and the protonbeam power, and was estimated to be ca. 99.9% for the designed lifetime of the MW-class target.
高功率汞靶中的压力波问题
DOI：
--
发表时间：
2006
期刊：
Nuclear Instruments and Methods in Physics Research Section A Vol.562
影响因子：
--
作者：
M.Futakawa;T.Wakui;H.Kogawa;Y.Ikeda
通讯作者：
Y.Ikeda