X-ray inspection using wavelength-shifting fiber-coupled scintillation detectors

US9285488B2 · kind B2 · utility

Assignee

• American Science and Engineering, Inc. · US

Inventors

• Anatoli Arodzero · Billerica, US
• Joseph Callerame · Lexington, US
• Dan-Cristian Dinca · Chelmsford, US
• Rajen Sud · Burlington, US
• Lee Grodzins · Lexington, US
• Martin Rommel · Freising, DE
• Peter J. Rothschild · Newton, US
• Jeffrey R. Schubert · Somerville, US

Key dates

• Filing date: Feb 4, 2013
• Grant date: Mar 15, 2016
• Expiry date: Oct 29, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10F39/18
• WIPO field: Environmental technology
• WIPO sector: Chemistry

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.