Title :
ASIC with Multiple Energy Discrimination for High-Rate Photon Counting Applications
Author :
Geronimo, Gianluigi De ; Dragone, Angelo ; Grosholz, Joe ; Connor, Paul O. ; Vernon, Emerson
Author_Institution :
Instrum. Div., Brookhaven Nat. Lab., Upton, NY
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
An ASIC for high rate photon counting measurements with multiple energy discrimination is presented. Optimized for pixelated CdZnTe sensors, the ASIC is composed of 64 channels with low-noise charge preamplification, high-order shaping (40ns minimum peaking time), and five window-discriminators with associated 16-bit counters. An efficient readout scheme allows simultaneous measurement and readout through a 60 MHz 16-bit output bus. The ASIC architecture and experimental results are reported, and the impact of the shaper order on the resolution, ballistic deficit, and pile-up is discussed.
Keywords :
application specific integrated circuits; photon counting; semiconductor counters; ASIC architecture; ballistic deficit; high rate photon counting application; low-noise charge preamplification; multiple energy discrimination; pixelated CdZnTe sensor; Application specific integrated circuits; CMOS technology; Capacitance; Electrons; Energy measurement; Fabrication; MOSFET circuits; Optoelectronic and photonic sensors; Photonic integrated circuits; Radiation detectors;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.355951
