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Published October 2012 | public
Book Section - Chapter

A Study on Radiation Hardness of 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 GSI. 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 crystals used in the CMS experiment. Progresses are observed in 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 trace variations of crystal transparency in situ for a PWO crystal calorimeter in a radiation environment.

Additional Information

© 2012 IEEE. Manuscript received November 16, 2012. This work was supported in part by the US 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.

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