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A Study on Radiation Hardness of BGO Crystals

Zhang, Liyuan and Mao, Rihua and Wang, Shaohua and Yang, Fan and Zhu, Ren-Yuan (2012) A Study on Radiation Hardness of BGO Crystals. In: 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE Nuclear Science Symposium Conference Record. IEEE , Piscataway, NJ, pp. 361-364. ISBN 978-1-4673-2028-3.

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We report an investigation on the radiation hardness of 20 cm long BGO crystals produced at Shanghai Institute of Ceramics. Their optical and scintillation properties, such as transmittance and emission spectra, light output and response uniformity, were measured before, during and after γ-ray irradiations at 2, 8, 30 and 5,444 rad/h. BGO crystals produced in 2004 and 2011 are compared to a sample grown in early eighties for the L3 experiment at LEP. Significantly better radiation harness is observed in the sample grown in 2011 in transmittance, light output and radiation hardness. Their use for crystal calorimeters in future high energy physics experiments is discussed. To maintain crystal resolution, a precision light monitoring system is mandatory to trace variations of crystal transparency in situ for a BGO crystal calorimeter in a radiation environment. The origin of radiation damage in BGO is also discussed.

Item Type:Book Section
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URLURL TypeDescription
Zhang, Liyuan0000-0002-0898-787X
Zhu, Ren-Yuan0000-0003-3091-7461
Additional Information:© 2012 IEEE. Manuscript received November 18, 2012. This work was supported in part by the U.S. Department of Energy under Grant No. DE-FG03-92-ER40701. The authors would like to thank colleagues of the SuperB ECAL collaboration. The work presented in this report was inspired by the lively discussion in the SuperB ECAL collaboration.
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG03-92-ER40701
Series Name:IEEE Nuclear Science Symposium Conference Record
Record Number:CaltechAUTHORS:20131213-101040045
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Official Citation:Liyuan Zhang; Rihua Mao; Shaohua Wang; Fan Yang; Ren-yuan Zhu, "A study on radiation hardness of BGO crystals," Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE , vol., no., pp.361,364, Oct. 27 2012-Nov. 3 2012 doi: 10.1109/NSSMIC.2012.6551126
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42994
Deposited By: Ruth Sustaita
Deposited On:16 Dec 2013 17:03
Last Modified:09 Mar 2020 13:19

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