PARTICLE DETECTOR HAVING IMPROVED PERFORMANCE AND SERVICE LIFE

    公开(公告)号:US20210074531A1

    公开(公告)日:2021-03-11

    申请号:US17040410

    申请日:2019-03-22

    Abstract: The present invention relates to generally to components of scientific analytical equipment. More particularly, the invention relates to ion detectors of the type which incorporate electron multipliers and modifications thereto for extending the operational lifetime or otherwise improving performance. The invention may be embodied in the form of a particle detector having one or more electron emissive surfaces and/or an electron collector surface therein, the particle detector being configured such that in operation the environment about the electron emissive surface(s) and/or the electron collector surface is/are different to the environment immediately external to the detector.

    Neutron detector unit and neutron detector arrangement

    公开(公告)号:US10024986B2

    公开(公告)日:2018-07-17

    申请号:US14392032

    申请日:2013-09-13

    Abstract: The invention relates to a neutron detector unit for neutrons, in particular thermal and cold neutrons, comprising a detector housing (7, 17, 27), cathode elements and a plurality of anode elements (5, 15, 25), wherein in order to form a volume detector unit the anode elements (5, 15, 25) and the cathode elements enable a three-dimensional spatial resolution for conversion events, characterized by a converter gas in the detector housing (7, 17, 27). According to the invention, in a neutron detector arrangement which includes at least one neutron detector unit the neutron detector unit (3, 13, 23) or at least one of the neutron detector units (3, 13, 23) is oriented in such a way that at least some of the anode elements (5, 15, 25) of the at least one neutron detector unit (3, 13, 23) extend at least predominantly in a longitudinal orientation parallel or almost parallel to the direction of travel of the neutrons (4) to be detected.

    Energy-sensitive fast neutron imaging detector and method for energy-sensitive fast neutron detection

    公开(公告)号:US09632189B2

    公开(公告)日:2017-04-25

    申请号:US14427691

    申请日:2013-08-13

    CPC classification number: G01T3/003 G01T1/185 G01T3/008

    Abstract: An energy-sensitive imaging detector for fast-neutrons includes energy-selective radiator foil stacks converting neutrons into recoil protons. The foils are separated by gas-filled gaps and formed of two interconnected layers: a hydrogen-rich layer such as a polyethylene layer for neutron-to-proton conversion, and a metal foil layer, such as an aluminum layer, defining a proton energy cut-off and limiting a proton emission angle. Energetic recoil protons emerging from the radiator foil release electrons in surrounding gas in the gaps. An electric field efficiently drifts the electrons through the gaps. An electron detector with position sensitive readout, based on Micro-Pattern Gaseous Detector technologies (such as THick Gaseous Electron Multipliers—THGEM) or other measures provides electron amplification in gas. The charge detector has a dedicated imaging data-acquisition system detecting the drifted electrons thereby sensing the position of the original impinging neutrons.

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