COMPOSITE GAMMA-NEUTRON DETECTION SYSTEM

    公开(公告)号:CA2863633A1

    公开(公告)日:2013-08-08

    申请号:CA2863633

    申请日:2013-01-29

    Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. In one configuration, B-10 based detector is used in a parallel electrode plate geometry that integrates neutron moderating sheets, such as polyethylene, on the back of the electrode plates to thermalize the neutrons and then detect them with high efficiency. The moderator can also be replaced with plastic scintillator sheets viewed with a large area photomultiplier tube to detect gamma-rays as well. The detector can be used in several scanning configurations including portal, drive-through, drive-by, handheld and backpack, etc.

    Composite gamma-neutron detection system

    公开(公告)号:GB2490061A

    公开(公告)日:2012-10-17

    申请号:GB201212492

    申请日:2010-12-22

    Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. The detector consists of one or more thin screens embedded in transparent hydrogenous light guides, which also serve as a neutron moderator. The emitted particles interact with the scintillator screen and produce a high light output, which is collected by the light guides into a photomultiplier tube and produces a signal from which the neutrons are counted. Simultaneous gamma-ray detection is provided by replacing the light guide material with a plastic scintillator. The plastic scintillator serves as the gamma-ray detector, moderator and light guide. The neutrons and gamma -ray events are separated employing Pulse-Shape Discrimination (PSD). The detector can be used in several scanning configurations including portal, drive -through, drive -by, handheld and backpack, etc.

    COMPOSITE GAMMA-NEUTRON DETECTION SYSTEM

    公开(公告)号:CA2863633C

    公开(公告)日:2017-02-21

    申请号:CA2863633

    申请日:2013-01-29

    Abstract: The present invention provides a gamma-neutron detector based on mixtures of thermal neutron absorbers that produce heavy-particle emission following thermal capture. In one configuration, B-10 based detector is used in a parallel electrode plate geometry that integrates neutron moderating sheets, such as polyethylene, on the back of the electrode plates to thermalize the neutrons and then detect them with high efficiency. The moderator can also be replaced with plastic scintillator sheets viewed with a large area photomultiplier tube to detect gamma-rays as well. The detector can be used in several scanning configurations including portal, drive-through, drive-by, handheld and backpack, etc.

    Methods and systems for Time-of-Flight neutron interrogation for material descrimination

    公开(公告)号:AU2013267091A1

    公开(公告)日:2015-01-15

    申请号:AU2013267091

    申请日:2013-05-31

    Abstract: The present invention provides a Time-of-Flight based neutron inspection system. The system employs a collimated beam of fast neutrons for targeted interrogation of suspect areas in cargo. Elemental composition is determined as a function of depth. Analysis is then used to determine the presence of contraband. The system may be used for secondary inspection for material discrimination to reduce false alarm rate and high cost and time associated with manual unpacking.

    X-ray based system for inspecting a person's shoes for aviation security threats

    公开(公告)号:GB2488930B

    公开(公告)日:2014-04-30

    申请号:GB201209461

    申请日:2010-11-17

    Abstract: The present application discloses a system for scanning a shoe for illegal materials. The system includes an X-ray source for projecting a beam of X-rays onto the shoe, a detector array for detecting X-rays transmitted through the shoe and at least one metal detector coil for detecting metals within the shoe. The system produces a radiographic image of the shoe by processing the detected X-rays and data obtained from the at least one metal detector coil. Other embodiments are directed toward other screening technologies, including millimeter wave screening technologies.

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