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Published June 2013 | public
Journal Article

A Study on Radiation Damage in PWO-II Crystals


We report in this paper an investigation on radiation hardness of 20 cm long PWO-II crystals produced at BTCP for the proposed PANDA experiment at FAIR. The optical and scintillation properties of PWO-II crystals, such as transmittance, light output and light response uniformity, were measured before and after γ-ray irradiations at different dose rates. PWO-II crystals are compared to PWO crystals used in the CMS experiment. Progresses are observed in the light output and the radiation hardness for PWO-II crystals. Its use for crystal calorimeters in future high energy physics experiments is discussed. To maintain crystal precision, a precision light monitoring system is mandatory to follow variations of crystal transparency in situ.

Additional Information

© 2013 IEEE. Manuscript received December 05, 2012; revised February 22, 2013; accepted April 12, 2013. Date of publication May 24, 2013; date of current version June 12, 2013. This work was supported in part by the U.S. Department of Energy Grant DE-FG03-92-ER40701. The authors would like to thank Prof. R. Novotny of Giessen University for providing PWO-II samples used in this study.

Additional details

August 19, 2023
October 24, 2023