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N. Nagara
Center for Applied Nuclear Science and Technology, National Nuclear Energy Agency, Indonesia
Materials Science & Nanotechnology

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ENC Measurement for ASIC Preamp Board as a Detector Module for PET System N. Nagara
Atom Indonesia Vol 42, No 2 (2016): August 2016
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (20.799 KB) | DOI: 10.17146/aij.2016.506

Abstract

We developed a gamma ray detector with an LuAG:Pr scintillator and  an avalanche photodiode as a detector for a positron emission tomography (PET) system. Studies have been performed on the influences of gamma irradiation on application-specific integrated circuit (ASIC) preamp boards used as a detector module. As a device used in nuclear environments for substantial durations, the ASIC has to have a lifetime long enough to ensure that there will be a negligible failure rate during this period. These front-end systems must meet the requirements for standard positron emission tomography (PET) systems. Therefore, an equivalent noise charge (ENC) experiment is needed to measure the front-end system's characteristics. This study showed that minimum ENC conditions can be achieved if a shorter shaping time could be applied. Received: 22 October 2014 ; Revised: 23 Februari 2016; Accepted: 3 March 2016
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