BGO readout with photodiodes as a soft gamma-ray detector at -30°C

被引：8

作者：

Nakamoto, T

Fukazawa, Y

Ohsugi, T

Kamae, T

Kataoka, J

机构：

[1] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[2] Stanford Linear Accelerator Ctr, Menlo Pk, CA USA

[3] Tokyo Inst Technol, Tokyo 152, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2005年 / 536卷 / 1-2期

关键词：

BGO scintillator; photodiode; avalanche photodiode; gamma-ray detector;

D O I：

10.1016/j.nima.2004.07.209

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

BGO is expected to be plausible devices for soft gamma-ray detectors, because of a high detection efficiency for soft gamma-rays. Here we report on the good performance of BGO readout with PIN-photodiode or avalanche photodiode as a soft gamma-ray detector. We confirmed that the signal output of BGO becomes comparable to that of GSO when it is readout with photodiodes due to better matching between emission wavelength of BGO and quantum efficiency of photodiode. The energy resolution of 6.2% and 3.4% for 662 and 1836 keV, respectively, gamma-rays at -30degreesC is obtained with the combination of the 5 x 5 x 5 mm(3) cube BGO and the Hamamatsu avalanche photodiode (APD) S8664-55. In this combination, the lowest detectable energy is found to be similar to10 keV. These performances are better than that obtained with Photomultiplier tube (PMT), and our results increase many possible applications of BGO readout with photodiodes as soft gamma-ray detectors. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：136 / 145

页数：10

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