1. Study on SiPM GFAG scintillator for high time resolution Compton camera.
- Author
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Rachman, Agus Nur, Zhihong, Zhong, Donghwan, Kim, Uenomachi, Mizuki, Shimazoe, Kenji, Takahashi, Hiroyuki, Kishimoto, Takuya, Kogami, Hiroki, Mukai, Atsushi, Hara, Shintaro, Yamagishi, Keita, Tomita, Hideki, Tamura, Yusuke, Woo, Hanwool, Kamada, Kei, Ebi, Hidetake, Ishida, Fumihiko, Takada, Eiji, Asama, Hajime, and Kawarabayashi, Jun
- Subjects
COMPTON imaging ,PHOTON detectors ,SIGNAL processing ,COMPTON scattering ,NUCLEAR industry ,SCINTILLATORS ,NUCLEAR counters - Abstract
Compton camera is a radiation detector that uses the kinematics of Compton scattering to estimate the direction of the gamma-ray incident. Compton camera has been used in many applications such as astronomy, medical, nuclear industry, and security. High time resolution in a Compton camera is essential to distinguish the incoming event in the detector. In this work, we developed a Compton camera using a fast decay scintillator and a high time resolution front end circuit to get a high-performance detector. The detector used an 8×8 multi-pixel photon counter (MPPC) array, which individually couple with a 2.5×2.5×5 mm
3 GFAG (Gadolinium Fine Aluminum Gallate) scintillator. For processing the analog signal from the MPPC scintillators, the 64 channel ASIC (Application-Specific Integrated Circuit) is used. Each channel in the ASIC circuit consists of a pre-amplifier, shaper, monostable multivibrator, and slew-rate time over threshold. The ASIC will provide the digital output signal that contains the timing and energy information. The high-time resolution data acquisition circuit (PETnet) based on FPGA is used to acquire energy and time data from ASIC. [ABSTRACT FROM AUTHOR]- Published
- 2022
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