A Study on Radiation Damage in PWO-II Crystals

作者：Yang Fan^*; Mao Rihua; Zhang Liyuan; Zhu Ren yuan

来源：IEEE Transactions on Nuclear Science, 2013, 60(3): 2336-2342.

DOI：10.1109/TNS.2013.2262660

• Crystal
• light output
• photo-luminescence
• radiation damage
• scintillator
• transmission

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 gamma-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.

• 出版日期2013-6