[2H01-08] Imaging Detectors

[2H03] Study on Time-of-Flight Compton Imaging System for Environmental Monitoring

*Agus Nur Rachman¹, Kenji Shimazoe¹, Hiroyuki Takahashi¹, Yusuke Tamura², Hideki Tomita³, Hanwool Woo², Kei Kamada², Fumihiko Ishida⁴, Eiiji Takada⁴, Kosuke Tanabe⁵ (1. The University Of Tokyo, 2. Tohoku University , 3. Nagoya University, 4. National Institute of Technology Toyama, 5. National Research Institute of Police Science)

Keywords:Gamma-ray imaging, Compton imaging , GAFG crystal, TOF

A Compton camera with high time resolution (GRASP Gamma-RAy SPhere) is under construction for the 4-pi gamma-ray imaging. We have adapted GFAG crystal readout by MPPC for detectors. The purpose of this work is to demonstrate the time of flight (TOF) method for image reconstruction created by the Compton camera. TOF in Compton camera is used for getting information of the event order in the detectors. By knowing the first interaction event in the detector, we can identify the correct position of the incoming radiation source.