DocumentCode :
469489
Title :
Pulse processing system for the RADMAP radiation modulation aperture imager
Author :
Myjak, Mitchell J. ; Rohrer, John S. ; Morris, Scott J. ; Woodring, Mitchell L. ; Ely, James H.
Author_Institution :
Pacific Northwest Nat. Lab., Richland
Volume :
1
fYear :
2007
fDate :
Oct. 26 2007-Nov. 3 2007
Firstpage :
511
Lastpage :
514
Abstract :
We are currently developing a portable radiation imager for emergency responders. The instrument contains a position-sensitive photomultiplier tube with a thin CsI(Na) scintillator and a tungsten radiation modulation aperture. As part of this project, we have designed a novel pulse processing system to record the amplitude and position of incident events. This system consists of four charge-to-pulse-width converters that transfer time-modulated digital pulses to a field- programmable gate array. The design can process data at count rates exceeding 40,000 events per second and transmit data over an Ethernet link at 1 Gb/sec.
Keywords :
PWM power convertors; field programmable gate arrays; nuclear electronics; photomultipliers; position sensitive particle detectors; solid scintillation detectors; CsI(Na) scintillator; Ethernet; RADMAP; charge-to-pulse-width converters; field-programmable gate array; novel pulse processing system; portable radiation imager; position-sensitive photomultiplier; radiation modulation aperture imager; time-modulated digital pulses; tungsten radiation modulation aperture; Apertures; Capacitors; Circuits; Ethernet networks; Instruments; Photomultipliers; Pulse amplifiers; Pulse modulation; Resistors; Tungsten;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
ISSN :
1095-7863
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2007.4436381
Filename :
4436381
Link To Document :
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