Timing Resolution Improvement of MPPC for TOF-PET Imaging

被引：0

作者：

Nagano, T. ^{[1
]}

Sato, K. ^{[1
]}

Ishida, A. ^{[1
]}

Baba, T. ^{[1
]}

Tsuchiya, R. ^{[1
]}

Yamamoto, K. ^{[1
]}

机构：

[1] Hamamatsu Photon KK, Div Solid State, Hamamatsu, Shizuoka 4358558, Japan

来源：

2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC) | 2012年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Large detection area and good timing resolution of Silicon Photomultiplier (SiPM) based scintillation detectors is required for TOF-PET imaging. Achieving good timing requires output pulse uniformity on each microcell to be good; this depends on minimizing the gain, the recovery time, the trace impedance variation, etc. A double metal trace, a metal resistor and a new structure were applied to produce uniform characteristics on a single Multi-Pixel Photon Counter (MPPC) channel. The resulting time resolution has been improved to 140 ps for approximately 10 photons irradiation and an overvoltage of 2.5 V on a 6x4 mm(2) single channel MPPC test pattern. Furthermore afterpulse probability has been dramatically suppressed to a typical value of 3% by applying new silicon wafers and new process conditions.

引用

页码：1577 / 1580

页数：4

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