Title :
A simple pulse shape discrimination method for the phoswich counter
Author :
Murakami, H. ; Kamae, T. ; Gunji, S. ; Hirayama, M. ; Miyazaki, S. ; Sekimoto, Y. ; Takahashi, T. ; Tamura, T. ; Tanaka, M. ; Yamaoka, N. ; Yamagami, T. ; Nomachi, M. ; Mori, K.
Author_Institution :
Dept. of Phys., Rikkyo Univ., Tokyo, Japan
Abstract :
A simple pulse shape discriminator (PSD) has been developed for applications where a large number of channels are used within limited space and electric power. In the PSD, the output signal from a photomultiplier is differentiated and integrated to form a triple-polar pulse. The time interval between the first and second zero crossings depends on the decay time of the scintillation light. The circuit selects signals from the proper scintillator by using this interval. One can significantly reduce the effect of time slewing in the low energy region using this method. Sixty-four channels of the PSD have been successfully operated in a balloon-borne hard X-ray experiment.<>
Keywords :
X-ray astronomy; astronomical instruments; discriminators; nuclear electronics; photomultipliers; scintillation counters; PSD; X-ray astronomy; balloon-borne hard X-ray experiment; decay time; electric power; limited space; low energy region; output signal; phoswich counter; photomultiplier; pulse shape discrimination method; scintillation light; time slewing; triple-polar pulse; zero crossings; Counting circuits; Logic; Photomultipliers; Physics; Pulse amplifiers; Pulse circuits; Pulse measurements; Pulse shaping methods; Radiation detectors; Shape;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259023
