Measurement of the differential neutron flux inside a lead shielding in a cryogenic experiment
Measurement of the differential neutron flux inside a lead shielding in a cryogenic experiment
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低温实验中铅屏蔽内微分中子通量的测量
DOI：
10.1088/1742-6596/375/1/012018
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
J. Villar
中科院分区：
文献类型：
--
作者：
N. Coron;C. Cuesta;E. García;C. Ginestra;J. Gironnet;P. Marcillac;Mario Martinez;Y. Ortigoza;C. Pobes;J. Puimedón;T. Redon;T. Rolón;M. Sarsa;L. Torres;J. Villar
Rosebud的合作使用了两个闪烁的LiF和Al_2O_3测辐射热计，在20MK下测量了用252Cf源照射的铅屏蔽内的快中子差动通量。我们比较了使用三参数模型的中子通量快分量展开方法和将感兴趣的能量区间分成组的多群方法。讨论了在寻找暗物质WIMP的低温实验中用LiF或Al_2O_3进行中子监测的一些问题。
The ROSEBUD collaboration measured the differential flux of fast neutrons inside a shielding of lead irradiated with a source of 252Cf using two scintillating bolometers of LiF and Al2O3 at 20 mK. We compare an unfolding method using a three parameter model for the fast component of the neutron flux with a multigroup method in which the energy interval of interest is divided into groups. Some issues regarding the neutron monitoring with LiF or Al2O3 in a cryogenic experiment searching for dark matter WIMPs are discussed.