High Efficiency Spectroscopic Angular Imaging via a Compton Camera using Fast Inorganic Scintillators

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$726,810.00
Award Year:
2012
Program:
SBIR
Phase:
Phase II
Contract:
W15QKN-12-C-0047
Award Id:
n/a
Agency Tracking Number:
A2-4692
Solicitation Year:
2009
Solicitation Topic Code:
A09-136
Solicitation Number:
2009.3
Small Business Information
448 South Huron Street, Ypsilanti, MI, -
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
614133903
Principal Investigator:
Byron Wells
General Manager
(734) 223-1228
wells@galtresearch.com
Business Contact:
Byron Wells
Government Employee
(734) 223-1228
wells@galtresearch.com
Research Institution:
Stub




Abstract
In order to effectively manage hazardous environments, one requires a detailed knowledge of those materials that pose a threat to valued assets. Through both detector characterization and system modeling, we demonstrated the feasibility of using a Compton Camera based on inorganic scintillators as a means to rapidly image high explosives and other organic materials at intermediate to long ranges, when they are impinged upon by a high-flux neutron stream. In particular, we evaluated five different scintillation materials- NaI(Tl), Ba2, LaCl3(Ce), bismuth germanium oxide (BGO), and CsI2, and two different configurations- cylindrical bar detector and pixellated planes. The experiments confirmed the analytical prediction that a compact (less than a cubic foot of detector material) bar-detector comprised of NaI(Tl) is a feasible method of rapidly imaging explosives at intermediate ranges (10s of meters). What remains is to optimize the light propagation characteristics of the crystals (via the boundary reflectors) and to couple the entire system together into a Phase II prototype. The main technical objective of Year 1 of the Phase II research is to thus build a demonstration instrument that is capable of HE detection and localization, which will be optimized and demonstrated during the Year 2 work.

* information listed above is at the time of submission.

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