학술논문
Scintillation properties of LuYAP and LYSO crystals measured with MiniACCOS, an automatic crystal quality control system
Document Type
Conference
Author
Source
IEEE Nuclear Science Symposium Conference Record, 2005 Nuclear Science Symposium Nuclear Science Symposium Conference Record, 2005 IEEE. 5:2807-2810 2005
Subject
Language
ISSN
1082-3654
Abstract
The Crystal Clear Collaboration has built a small animal PET, the ClearPET/spl trade/ and is now working on a dedicated PET for mammography, the ClearPEM/spl trade/. The /spl gamma/-ray detectors in these machines consist of matrices of small scintillation crystals coupled to photo detectors. In all the detectors for the ClearPEM/spl trade/ about 6000 LYSO (2/spl times/2/spl times/20 mm/sup 3/) crystals are used while for the ClearPET/spl trade/ the number is around 5000 LYSO and the same amount of LuYAP crystals with a dimension of 2/spl times/2/spl times/10 mm/sup 3/ in a phoswich combination. An automatic system to measure the light yield, decay time and energy resolution of those L(Y)SO and Lu(Y)AP pixels of different sizes on a fast basis (around 500 per day) was constructed at CERN, the MiniACCOS (mini automatic crystal quality control system). This paper offers a short description of the MiniACCOS system and presents first results of crystal measurements of about 10000 LYSO and LuYAP pixels and compares them to previously produced batches of LuYAP crystals produced by two different growth methods.