DocumentCode :
2544147
Title :
Large area sensing arrays for detection of thermal neutrons
Author :
Kunnen, G.R. ; Pressler, Daniel ; Lee, E.H. ; Allee, D.R. ; Murphy, J.W. ; Mejia, I. ; Quevedo, M. ; Gnade, B.
fYear :
2012
fDate :
Oct. 27 2012-Nov. 3 2012
Firstpage :
156
Lastpage :
161
Abstract :
Developments of flexible detection arrays suggest that portable robust detectors are indeed possible. A large area flexible array promises a large capture cross section in a light weight rugged format suitable for deployment at ports of entry. The approach for this detector uses a high neutron-capture cross-section layer, such as 10B, which captures incident thermal neutrons, and emits energetic ionizing charged particles. These ionizing particles are sensed using an integrated diode. The resulting charge is then amplified via a low-noise thin film transistor amplifier. We present a low-noise optimized active pixel sensor (APS) design which can be implemented in either a low temperature InGaZnO or an a-Si:H thin film transistor (TFT) process compatible with plastic substrates. Here, we also present a detectable alpha particle response with our dual stage APS design in combination with an externally connected commercial PIN diode. Furthermore, we discuss detector and array modeling which will further aid in future designs.
Keywords :
neutron detection; p-i-n diodes; semiconductor counters; thin film transistors; active pixel sensor; detectable alpha particle response; dual stage APS design; energetic ionizing charged particles; externally connected commercial PIN diode; flexible detection arrays; high neutron-capture cross-section layer; incident thermal neutrons; integrated diode; ionizing particles; large area flexible array; large area sensing arrays; large capture cross section; light weight rugged format; low-noise optimized APS design; low-noise thin film transistor amplifier; plastic substrates; portable robust detectors; thermal neutron detection; thin film transistor;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
ISSN :
1082-3654
Print_ISBN :
978-1-4673-2028-3
Type :
conf
DOI :
10.1109/NSSMIC.2012.6551083
Filename :
6551083
Link To Document :
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