Performance of a 64-channel, 3.2×3.2 cm² SiPM tile for TOF-PET application

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• 作者：Alessandro Ferri ; ^{aleferri@fbk.eu" class="auth_mail" title="E-mail the corresponding author} ; Fabio Acerbi ; Alberto Gola ; Claudio Piemonte ; Giovanni Paternoster ; Nicola Zorzi
• 关键词：Applications ; SiPM ; Time resolution ; Energy resolution ; TOF-PET
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 July 2016
• 年：2016
• 卷：824
• 期：Complete
• 页码：196-197
• 全文大小：670 K

文摘

In this work, we present a new 3.2×3.2 cm² detector tile, composed of 8×8 single SiPMs, having a regular 4 mm pitch in both the X and Y directions. The tile fill factor is 85%. We produced two versions of the tile with different SiPM technologies: RGB-HD and NUV. The first one features square micro-cells with 25 µm pitch, a PDE peaked at 550 nm and a DCR of 300 kHz/mm², at 20 °C and at maximum detection efficiency. The second one features micro-cells with 40 µm pitch and a PDE peaked in the blue part of the spectrum. The dark count rate at 20 °C and at maximum PDE is 100 kHz/mm². In this work, we show the energy and timing resolution measurements at 511 keV obtained coupling the two tiles to an 8×8 LYSO array with a pixel size of 4×4×22 mm³, perfectly matching the photo-detector array.