✦ LIBER ✦

Development of a low-noise analog front-end ASIC for APD-PET detectors

✍ Scribed by Koizumi, M.; Kataoka, J.; Tanaka, S.; Ishibashi, H.; Kawai, N.; Ikeda, H.; Ishikawa, Y.; Kawabata, N.; Matsunaga, Y.; Shimizu, K.; Kubo, H.

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 613 KB
Volume: 604
Category: Article
ISSN: 0168-9002
DOI: 10.1016/j.nima.2009.01.104

No coin nor oath required. For personal study only.

✦ Synopsis

Positron emission tomography (PET) ASIC Open-IP a b s t r a c t

We report on the development of a front-end ASIC for high spatial resolution PET detectors with timeof-flight capability based on LYSO scintillator arrays coupled with position-sensitive avalanche photodiode (APD) arrays. The ASIC is designed based on the open-IP LSI project led by JAXA and realized in TSMC 0:35-mm CMOS technology. It consists of an 8-channel charge-sensitive amplifier, band-pass filters, differentiators, pulse-height and timing discriminators, and two-channel time-toamplitude converters. As a result, energy resolution of 9.7% (FWHM) is obtained at 511 keV, with a time resolution below 970 ps ðsÞ. We will also report on the current status of developing a second-version ASIC designed to have 32-channel analog circuits with improved time resolution.

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