Speaker
Mr
Shintaro Go
(CNS)
Description
We are developing a method to extract gamma-ray interaction positions in the segmented planar Ge detector of CNS-GRAPE. The total array of CNS-GRAPE consists of 18 detectors and each of which contains two Ge planer crystals with the effective radius of 30mm and the thickness of 20mm.
The cathode of each detector is divided to 3×3, and the anode is common. The pulse shape data from each cathode are taken by 100 MHz Flash ADC. Output pulses from the cathode show the different shapes depending on gamma-ray interaction points and the deposited energy. After analyzing these digitized data, a few parameter set, i.e. centroid and width of pulse shapes, are extracted, which strongly depend on the interaction points of gamma rays. By comparing the experimentally deduced parameters with simulated ones, interaction points in the detector are deduced.
Primary author
Mr
Shintaro Go
(CNS)
Co-authors
Dr
Eiji Ideguchi
(CNS)
Dr
Hidetada Baba
(RIKEN, Nishina Center)
Mr
Hiroyuki Miya
(CNS)
Dr
Shinsuke Ota
(CNS)
Prof.
Susumu Shimoura
(CNS)
