US Patent:
20130208857, Aug 15, 2013
Inventors:
AMERICAN SCIENCE AND ENGINEERING, INC. - , US
Joseph Callerame - Lexington MA, US
Dan-Cristian Dinca - Chelmsford MA, US
Rajen Sud - Burlington MA, US
Lee Grodzins - Lexington MA, US
Martin Rommel - Lexington MA, US
Peter Rothschild - Newton MA, US
Jeffrey Schubert - Somerville MA, US
Assignee:
AMERICAN SCIENCE AND ENGINEERING, INC. - Billerica MA
International Classification:
G01T 1/20
G01N 23/20
G01N 23/06
US Classification:
378 57, 250368, 250367, 250394, 378 86
Abstract:
A detector and methods for inspecting material on the basis of scintillator coupled by wavelength-shifting optical fiber to one or more photo-detectors, with a temporal integration of the photo-detector signal. An unpixelated volume of scintillation medium converts energy of incident penetrating radiation into scintillation light which is extracted from a scintillation light extraction region by a plurality of optical waveguides. This geometry provides for efficient and compact detectors, enabling hitherto unattainable geometries for backscatter detection and for energy discrimination of incident radiation. Additional energy-resolving transmission configurations are enabled as are skew- and misalignment compensation.