A4 Vertaisarvioitu artikkeli konferenssijulkaisussa
Threshold Optimization in Multi-Voltage Threshold Digitizers for TOF PET detector
Tekijät: Deng ZZ, Wu HD, Xiong W, Zhao AJ, Han CL, Wu JY, Yang Y, Duan ZW, Xiao P, Tang J, Xie QG
Konferenssin vakiintunut nimi: IEEE Nuclear Science Symposium and Medical Imaging Conference
Julkaisuvuosi: 2017
Journal: IEEE Nuclear Science Symposium conference record
Kokoomateoksen nimi: 2017 IEEE Nuclear Science Symposium and Medical Imaging Conference
Tietokannassa oleva lehden nimi: 2017 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC)
Lehden akronyymi: IEEE NUCL SCI CONF R
Sivujen määrä: 3
ISBN: 978-1-5386-2282-7
ISSN: 1095-7863
Tiivistelmä
Performance of time pickoff method, such as Leading Edge Discrimination (LED) or Multi-Voltage threshold (MVT) digitization, is particularly sensitive to the threshold setting. Thus, targeting to the time resolving ability, we investigate the choice of threshold in LED and multi-voltage threshold. In this works, we analysis the time spectrum with the entropy concept. Based on the principle of Minimum Entropy (ME), we give the criterion of threshold choice. To evaluate the improvement of our threshold choice, we setup two detectors to test the coincidence time resolution (CTR) for different threshold setting. The results show better coincidence time resolution could be obtained when the pickoff logic works with the optimized threshold.
Performance of time pickoff method, such as Leading Edge Discrimination (LED) or Multi-Voltage threshold (MVT) digitization, is particularly sensitive to the threshold setting. Thus, targeting to the time resolving ability, we investigate the choice of threshold in LED and multi-voltage threshold. In this works, we analysis the time spectrum with the entropy concept. Based on the principle of Minimum Entropy (ME), we give the criterion of threshold choice. To evaluate the improvement of our threshold choice, we setup two detectors to test the coincidence time resolution (CTR) for different threshold setting. The results show better coincidence time resolution could be obtained when the pickoff logic works with the optimized threshold.
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