无机材料学报 ›› 2013, Vol. 28 ›› Issue (4): 347-357.DOI: 10.3724/SP.J.1077.2013.12480 CSTR: 32189.14.SP.J.1077.2013.12480

• •    下一篇

双读出量能器用闪烁晶体研究进展

肖学峰1,2,3, 徐家跃3, 向卫东1   

  1. (1. 同济大学 材料科学与工程学院, 上海 201804; 2. 北方民族大学 物理系, 银川 750021; 3. 上海应用技术学院 材料科学与工程学院, 上海201418)
  • 收稿日期:2012-08-03 修回日期:2012-09-14 出版日期:2013-04-10 网络出版日期:2013-03-20
  • 作者简介:肖学峰(1977–), 男, 博士研究生. E-mail: xxf666666@163.com
  • 基金资助:
    国家973前期研究专项(2011CB612310);国家自然科学基金(50972093);上海市科委基础研究重点项目(11JC1412400);浙江省国际科技合作项目(2008C14088);浙江省公益技术项目(2012C31023)

Progress on Scintillation Crystals for Dual-readout Calorimeter

XIAO Xue-Feng1,2,3, XU Jia-Yue3, XIANG Wei-Dong1   

  1. (1. School of Materials Science and Engineering, Tongji University, Shanghai 201804, China; 2. Department of Physics, Bei Fang University of Nationalities, Yinchuan 750021, China; 3.School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China)
  • Received:2012-08-03 Revised:2012-09-14 Published:2013-04-10 Online:2013-03-20
  • About author:XIAO Xue-Feng. E-mail: xxf666666@163.com
  • Supported by:
    National Basic Research Program of China (2011CB612310);National Natural Science Foundation of China (50972093);Shanghai Science and Technology Committee (11JC1412400);Program for International S&T Cooperation Projects of Zhejiang Province (2008C14088);Zhejiang Province Public Technology Research and industrial projects (2012C31023)

摘要:

双读出量能器是一种全新设计的高能粒子探测装置, 它能同时测量到Cherenkov光和闪烁光, 因而能更全面地获得高能粒子的信息。目前, 双读出量能器主要有三种设计方式: (1)采用石英纤维产生Cherenkov光, 塑料闪烁纤维生成闪烁光; (2)分别以未掺杂的晶体纤维作为Cherenkov辐射体、Ce掺杂的同种晶体纤维作为闪烁体; (3)采用同种闪烁晶体有效分离Cherenkov光和闪烁光。第三种设计可以消除取样涨落、提高量能器的分辨率, 因而备受关注。本文基于第三种设计方式探讨了钨酸铅(PbWO4)、锗酸铋(Bi4Ge3O12)、硅酸铋(Bi4Si3O12)和镥铝石榴石(Lu3Al5O12)四种。闪烁晶体在双读出量能器方面的研究进展和可能的应用。Pr掺杂PWO晶体以及硅酸铋晶体都有可能用于双读出量能器, 而后者由于吸收边比锗酸铋更短, 更易于分离Cherenkov光和闪烁光, 在双读出量能器应用方面显示出明显的优势。稀土离子掺杂有望进一步提高硅酸铋晶体的性能, 开发出更适合双读出应用的闪烁材料。

关键词: 闪烁晶体, 双读出, Cherenkov光, Bi4Si3O12, 综述

Abstract:

The dual-readout calorimeter is a new designed equipment to detect high-energy particles. It can collect the Cherenkov light and scintillation light at the same time, thus scientists can understand the particles comprehensively in the field of high-energy physics. Three types of dual-readout calorimeters have been designed so far: (1) Quartz fibers as Cherenkov emitter and plastic fibers as scintillator; (2) Undoped and doped scintillation crystals act as Cherenkov and scintillator respectively; (3) Scintillation crystal act as Cherenkov as well as scintillator. The last attracted much attention because it can avoid sampling fluctuations and enhance energy resolution of calorimeters. The progress on the scintillation crystals, including lead tungstate (PbWO4), bismuth germinate (Bi4Ge3O12), bismuth silicate (Bi4Si3O12) and lutetium aluminum garnet (Lu3Al5O12), were presented for the application of dual-readout calorimeter. Pr: PWO crystal and Bi4Si3O12 crystal have potential application in dual-readout calorimeter. It’s easy to separate the Cherenkov and scintillation light for Bi4Si3O12 crystal because the short-wavelength cut-off of Bi4Si3O12 crystal is small in comparison with Bi4Ge3O12 crystal. Bi4Si3O12 crystal shows more advantages and its properties can be further optimized by doping rare earth ions.

Key words: scintillation crystal, dual-readout, Cherenkov light, Bi4Si3O12, review

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