Author/Authors :
Sekiya، نويسنده , , H. and Hattori، نويسنده , , K. and Kubo، نويسنده , , H. and Miuchi، نويسنده , , K. and Nagayoshi، نويسنده , , T. and Nishimura، نويسنده , , H. and Okada، نويسنده , , Y. and Orito، نويسنده , , R. and Takada، نويسنده , , A. and Takeda، نويسنده , , A. and Tanimori، نويسنده , , T. and Ueno، نويسنده , , K.، نويسنده ,
Abstract :
We have studied the performance of two different types of front-end systems for our gamma camera based on Hamamatsu H8500 (flat-panel 64 channels multi-anode PSPMT) with a CsI(Tl) scintillator array. The array consists of 64 pixels of 6 × 6 × 20 mm 3 which corresponds to the anode pixels of H8500.
the system is based on commercial ASIC chips in order to read out every anode. The others are based on resistive charge divider network between anodes to reduce readout channels. In both systems, each pixel (6 mm) was clearly resolved by flood field irradiation of 137Cs. We also investigated the energy resolution of these systems and showed the performance of the cascade connection of resistive network between some PMTs for large area detectors.
Keywords :
Gamma Camera , Compton telescope , Flat-panel detector , PSPMT
