Study of n- γ discrimination by zero-crossing method with SiPM based scintillation detectors
Study of n- γ discrimination by zero-crossing method with SiPM based scintillation detectors
复制标题
SiPM闪烁探测器过零法n-γ判别研究
DOI：
10.1016/j.nima.2017.11.045
复制
发表时间：
2018
影响因子：
1.4
通讯作者：
P. Schotanus
中科院分区：
文献类型：
--
作者：
M. Grodzicka;T. Szczesniak;M. Moszynski;L. Swiderski;D. Wolski;J. Baszak;S. Korolczuk;P. Schotanus
本文研究了用4x4ch和ch多象素光子计数器阵列对基于Stibene和EJ299-33型塑料闪烁体的中子探测器的n/γ分辨。N/γ分辨显示了MPPC阵列的优良性能，可与先前观察到的经典PMT相媲美。具体地，n−γ鉴别的过零方法的应用防止了由于与其大电容相关的硅光电倍增管(SiPM，或MPPC可互换)阵列的慢响应而导致的鉴别恶化。与MPPC阵列和XP5500光电倍增管测定的光电子数归一化的优点图的良好一致性证实了这一点。
The paper presents a study of n∕ γ discrimination with 4x4 ch and 8x8 ch Multi Pixel Photon Counter (MPPC) arrays in neutron detectors based on Stilbene and EJ299-33 plastic scintillators. The n∕ γ discrimination showed an excellent capability of the MPPC arrays, comparable to that observed earlier with the classical PMTs. Particularly, an application of a zero-crossing method of n− γ discrimination prevented deterioration of the discrimination by the slow response of the Silicon Photomultiplier (SiPM, or MPPC interchangeably) array related to its large capacitance. It was confirmed by a good agreement of the Figure of Merit normalized to the number of photoelectrons determined for the MPPC arrays and XP5500 PMT.