Comparative study of PP0275C hybrid photodetector and XP2020Q photomultiplier in scintillation detection

2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515) Pub Date : 2006-05-05 DOI:10.1109/NSSMIC.2003.1351947

M. Moszynski, W. Klamra, D. Wolski, W. Czarnacki, M. Kapusta, M. Balcerzyk

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引用次数: 5

Abstract

Properties of a hybrid photodetector (HPD), type PP0275C, produced by Delft Electronic Products B.V., for scintillation detection and spectrometry were studied and compared to a standard XP2020Q photomultiplier. The study was performed for several scintillators, as NaI(Tl), CsI(Tl), and LSO of different dimensions. The excellent capability of the HPD to resolve single photoelectron events was fully confirmed. However, the study of the HPD with the scintillators showed a dramatically reduced number of photoelectrons and a further deterioration of energy resolution, depending on the size (diameter or length) of the crystals. For a 10 mm diameter NaI(Tl) the number of photoelectrons of 5000/spl plusmn/250 phe/MeV was measured, which corresponds to about 56% of that observed with the XP2020Q with comparable quantum efficiency. Energy a /sup 137/Cs resolution of 9.2% for 662 keV /spl gamma/-rays from, source measured with the HPD light readout showed a serious degradation, larger than that arising from the statistics of photoelectrons. In conclusion, the study showed that this HPD is optimized for single photon detection and its application to scintillation detection is very limited.

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PP0275C混合式光电探测器与XP2020Q光电倍增管在闪烁探测中的比较研究

研究了Delft电子产品公司生产的用于闪烁探测和光谱分析的混合光电探测器(PP0275C型)的性能，并与标准的XP2020Q光电倍增管进行了比较。研究了几种不同尺寸的闪烁体，如NaI(Tl)、CsI(Tl)和LSO。实验充分证实了HPD处理单个光电子事件的优异性能。然而，用闪烁体对HPD的研究表明，光电子数量急剧减少，能量分辨率进一步恶化，这取决于晶体的大小(直径或长度)。对于直径为10 mm的NaI(Tl)，测量到的光电子数为5000/spl plusmn/250 phe/MeV，相当于具有相当量子效率的XP2020Q所观测到的光电子数的56%。HPD光读出器测量的662 keV /spl伽马射线的能量a/ sup 137/Cs分辨率为9.2%，显示出严重的退化，比光电子统计引起的退化更大。综上所述，研究表明该HPD仅适用于单光子探测，在闪烁探测中的应用非常有限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515)

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