Title :
Development of the pulse-shape discrimination LSI for Astro-E hard X-ray detector
Author :
Ezawa, H. ; Hirayama, M. ; Kamae, T. ; Kubo, H. ; Matsuzaki, K. ; Nagata, K. ; Saito, Y. ; Ikeda, H. ; Tsukada, K. ; Sano, Y. ; Shimizu, K. ; Ozawa, H. ; Takahashi, T. ; Murakami, H.
Author_Institution :
Dept. of Phys., Tokyo Univ., Japan
Abstract :
We have developed the pulse-shape discrimination LSI for Astro-E Hard X-ray Detector (HXD). In the detector, the X-ray and non X-ray backgrounds are reduced efficiently by use of well-type phoswich counters in the compound-eye configuration. The well-type phoswich counter uses GSO(Ce) or YAP(Ce) scintillator for its detection part, and well-shaped BGO for the shielding part. The pulse-shape discriminator (PSD) selects pure GSO (or YAP) hits, rejecting events deposited some energy in BGO. The PSD was designed as a bipolar semi-custom LSI to reduce its power consumption and size, and enhance its reliability. The first delivery of the PSD-LSI chip has been tested, and showed an acceptable performance as the PSD for Astro-E HXD
Keywords :
X-ray astronomy; X-ray detection; aerospace instrumentation; astronomical instruments; detector circuits; discriminators; large scale integration; nuclear electronics; pulse shaping circuits; solid scintillation detectors; Astro-E; Astro-E HXD; GSO(Ce); PSD-LSI chip; YAP(Ce); bipolar semicustom LSI; compound-eye configuration; hard X-ray detector; pulse-shape discrimination LSI; scintillator; well-shaped BGO; well-type phoswich counters; Astronomy; Large scale integration; Physics; Pulse amplifiers; Pulse shaping methods; Radiation detectors; Satellites; Solid scintillation detectors; X-ray detection; X-ray detectors;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-3180-X
DOI :
10.1109/NSSMIC.1995.504214
