Homogenization of the MultiChannel PM gain by inserting light attenuating masks

  • MultiChannel Photomultipliers (PM), like the R7600-00-M64 or R5900-00-M64 from Hamamatsu, are often chosen as photodetectors in high-resolution positron emission tomography (PET). A major problem of this PM is the nonuniform channel gain. In order to solve this problem, light attenuating masks were created. The aim of the masks is a homogenization of the output of all 64 channels using different hole sizes at the channel positions. The hole area, which is individually defined for the different channels, is inversely proportional to the channel gain. The measurements by inserting light attenuating masks improved a homogenization to a ratio of 1:1.2.

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Metadaten
Author:D. Christ, A. Hollendung, H. Larue, C. Parl, M. Streun, S. Weber, Karl Ziemons, H. Halling
ISSN:1082-3654
Parent Title (English):2003 IEEE Nuclear Science Symposium Conference Record, Vol. 4
Document Type:Article
Language:English
Year of Completion:2004
Date of the Publication (Server):2013/01/30
First Page:2382
Last Page:2385
Link:http://dx.doi.org/10.1109/NSSMIC.2003.1352375
Zugriffsart:campus
Institutes:FH Aachen / Fachbereich Medizintechnik und Technomathematik

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