A detailed test of a BSO calorimeter with 100–800 MeV positrons
A detailed test of a BSO calorimeter with 100–800 MeV positrons
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DOI：
10.1016/j.nima.2012.08.085
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发表时间：
2012-12
影响因子：
1.4
通讯作者：
T. Ishikawa;H. Fujimura;R. Hashimoto;S. Kaida;J. Kasagi;R. Kitazawa;S. Kuwasaki;A. Nakamura;K. Nawa;Y. Okada;M. Sato;H. Shimizu;Koutaku Suzuki;Y. Tajima;Shinichiro Takahashi;Y. Tsuchikawa;H. Yamazaki;H. Yoshida
中科院分区：
文献类型：
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作者：
T. Ishikawa;H. Fujimura;R. Hashimoto;S. Kaida;J. Kasagi;R. Kitazawa;S. Kuwasaki;A. Nakamura;K. Nawa;Y. Okada;M. Sato;H. Shimizu;Koutaku Suzuki;Y. Tajima;Shinichiro Takahashi;Y. Tsuchikawa;H. Yamazaki;H. Yoshida
用能量为100 ~ 800 MeV的正电子束，对由4个相同的BSO晶体组成的2×2矩阵型电磁量能器样机进行了性能测试。每个晶体的尺寸为40×40× 210 mm 3。这是世界上最大的BSO单晶，曾被用作光子探测器。在室温下获得的能量分辨率为（σE/E）2=（（1.71%±0.03%）/E）2+（1.12%±0.08%）2，其中E为入射正电子能量，单位为GeV。具有相同几何形状的BGO量热计已被用于性能测试以进行比较。本文还介绍了无束流测量BSO晶体闪烁的基本特性。
A performance test has been made for an electro-magnetic calorimeter prototype comprised four identical BSO crystals arranged in a 2×2 matrix by utilizing a positron beam in the energy range from 100 to 800MeV. The size of each crystal is 40×40×210mm3. This is the world's largest BSO single crystal ever used as a photon detector. The obtained energy resolution is (σE/E)2=((1.71%±0.03%)/E)2+(1.12%±0.08%)2at room temperature, where E is the incident positron energy given in GeV. A BGO calorimeter having the same geometry has been employed in the performance test for comparison. The basic scintillation characteristics of BSO crystals measured without the beam are also presented.