Bridgman法生长的大尺寸钨酸铅晶体的光学和闪烁性能

人工晶体学报, 2004, 33(4): 591-595. doi: 10.3969/j.issn.1000-985X.2004.04.027

Bridgman法生长的大尺寸钨酸铅晶体的光学和闪烁性能

张明荣 ^1, , 范宇红 ^2, , 张春生 ^3, , 韦瑾 ^4, , 任绍霞 ^5, , 葛云程 ^6, , 陈刚 ^7,

1.北京玻璃研究院,北京,100062

2.北京玻璃研究院,北京,100062

3.北京玻璃研究院,北京,100062

4.北京玻璃研究院,北京,100062

5.北京玻璃研究院,北京,100062

6.北京玻璃研究院,北京,100062

7.北京玻璃研究院,北京,100062

基金项目: Foundation of Swiss Federal Institute of Technology Zurich(ETHZ) 北京市自然科学基金(2952005 and 2022010)

关键词： PbWO4晶体 , Y掺质 , 闪烁性能 , 晶体生长

Optical and Scintillating Properties of Large-size PbWO4 Crystal Grown by Modified Bridgman Method

Keywords： PbWO4 crystal , Y-doping , scintillation properties , crystal growth

本文报道了我们采用改进的Bridgman法为欧洲核子研究中心(CERN)大型强子对撞机(LHC)上的紧凑型μ子螺线管(CMS)实验生长的大尺寸掺Y3+钨酸铅闪烁晶体,给出了晶体的光学和闪烁性能,如光致发光谱、X射线致发光光谱、纵/横向的透射光谱、光产额以及辐照硬度.测试结果表明,掺Y2O3的钨酸铅晶体光产额很高(>13pe/MeV),且全为100ns以内的快发光,其辐照硬度已接近CMS电磁量能器(ECAL)端帽晶体的要求,同一批晶体彼此间的性能一致性好.

In this paper, we presented the study of large-size Y3+-doped PbWO4 crystal grown using a modified Bridgman method for the CMS experiment at the Large Hadron Collider at CERN. The optical and scintillation properties of the crystal were given, including photo-luminescence and X-ray stimulated luminescence spectra, longitudinal and transverse transmittance spectra, light yield, and radiation hardness. The measurement results indicate that the crystal has very highlight yield values (>13 pe/MeV), fast scintillation within 100ns, and the radiation hardness close to the need for CMS-ECAL End Cap crystals. A good consistency is shown among the same batch of crystals.

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