Author:
Lang Zijian,Deng Z.,Gong H.
Abstract
Abstract
DIET is a 64-channel SiPM readout ASIC for TOF-PET and can
measure energy and arrival time independently for each channel. With
the increasing requirements for time measurement precision, the
timing performance of the DIET chip has been fully evaluated in this
paper. The noise sources in the time processing chain, especially in
the TDC, were theoretically analysed, and a dedicated test system
was built. The time jitter of the analogue front end and the TDC
were measured and analysed. The test results show that the total
jitters of the analogue front-end and the TDC are 24 ps and 22 ps
RMS at 50 p.e. input signal, respectively. The percentages of the
contribution by INL, thermal noise, and quantization noise of the
TDC are 70%, 16.6%, and 13.4%, respectively. The DIET chip was
also tested with SiPM and LYSO detectors. A CRT resolution of
244 ps FWHM was achieved using two single
3 × 3 × 16 mm3 crystals.
Subject
Mathematical Physics,Instrumentation
Cited by
1 articles.
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1. DIET2: A SiPM Readout ASIC for 10 ps TOF-PET application;2023 IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD);2023-11-04