Electronics System for the GammaTracker Handheld CdZnTe Detector

Conference · Sun Dec 30 23:00:00 EST 2007

OSTI ID:947059

Myjak, Mitchell J; Morris, Scott J; Slaugh, Ryan W; McCann, Jason M; Kirihara, Leslie J; Rohrer, John S; Burghard, Brion J; Seifert, Carolyn E

We are currently developing a handheld radioisotope identifier containing eighteen position-sensitive CdZnTe crystals. In addition to isotope identification, the device performs basic Compton imaging to determine the location of suspected sources. This paper gives an overview of the electronics system we have designed for this instrument. We use specialized application-specific integrated circuits to preprocess the outputs of each CdZnTe crystal. A low-power microprocessor running Windows CE drives the user interface and implements the isotope identification and directionality computations. Finally, we use a field-programmable gate array to perform the computationally intensive imaging tasks in real time.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 947059
• Report Number(s): PNNL-SA-57695; NN2001000
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CDTE SEMICONDUCTOR DETECTORS
Cadmium zinc telluride
Compton imaging
DESIGN
INTEGRATED CIRCUITS
MICROPROCESSORS
PORTABLE EQUIPMENT
POSITION SENSITIVE DETECTORS
RADIATION DETECTION
RADIOISOTOPES
electronic systems
field programmable gate arrays
nuclear imaging