Numerical evaluation of the light transport properties of alternative He-3 neutron detectors using ceramic scintillators
Numerical evaluation of the light transport properties of alternative He-3 neutron detectors using ceramic scintillators
复制标题
使用陶瓷闪烁体替代 He-3 中子探测器的光传输特性的数值评估
DOI：
10.1016/j.nima.2015.07.020
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发表时间：
2015
影响因子：
1.4
通讯作者：
M. Seya
中科院分区：
文献类型：
--
作者：
A. Ohzu;M. Takase;M. Haruyama;N. Kurata;N. Kobayashi;M. Kureta;Takashi Nakamura;K. Toh;K. Sakasai;H. Suzuki;K. Soyama;M. Seya
本文用射线追迹法模拟计算了闪烁体光在交替式He-3中子探测器中的输运特性。该探测器由一个光反射管，一个薄的矩形陶瓷闪烁片层压在玻璃板上，和两个光电倍增管（PMT）安装在两端的检测管。通过闪烁体和中子之间的核相互作用在闪烁体片的表面上诱导的闪光由两个PMT检测。对闪烁体片以几种不同排列方式安装的各种探测器两端的光输出进行了检查和评价，并与实验结果进行了比较。模拟结果表明，光传输特性强烈地依赖于闪烁体片在管中的布置和管的形状。
The light transport properties of scintillator light inside alternative He-3 neutron detectors using scintillator sheets have been investigated by a ray-tracing simulation code. The detector consists of a light-reflecting tube, a thin rectangular ceramic scintillator sheet laminated on a glass plate, and two photo-multiplier tubes (PMTs) mounted at both ends of the detector tube. The flashes of light induced on the surface of the scintillator sheet via nuclear interaction between the scintillator and neutrons are detected by the two PMTs. The light output at both ends of various detectors in which the scintillator sheets are installed with several different arrangements were examined and evaluated in comparison with experimental results. The results derived from the simulation reveal that the light transport property is strongly dependent on the arrangement of the scintillator sheet inside the tube and the shape of the tube.