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

Volume

2

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

697

Lastpage

704

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.355951

Filename

4179105