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公开(公告)号：US20240266085A1
公开(公告)日：2024-08-08
申请号：US18164964
申请日：2023-02-06
IPC分类号： G21C17/108 , G01T3/00 , G21C7/26
CPC分类号： G21C17/108 , G01T3/00 , G21C7/26
摘要： A measurement device for determining a power level of a nuclear reactor core is provided, the measurement device comprising an in-vessel detector assembly. The in-vessel detector assembly comprises a rotatable housing defining a cavity therein and a detector element positioned in a first angular portion of the cavity of the housing. A control drum for a nuclear reactor core and a system for monitoring a power level of a nuclear reactor are also provided.
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公开(公告)号：US11977193B2
公开(公告)日：2024-05-07
申请号：US17813156
申请日：2022-07-18
发明人： Michael D. Heibel
摘要： A power sensor system for monitoring a subcritical neutron generator is provided. The power sensor system comprises a self-powered sensor insert. The self-powered sensor insert comprises an insert thimble and a detector assembly. The insert thimble includes an outer housing, a power generator configured to produce an electrical power based on an incident radiation and a first electrical interface electrically connected to the power generator. The detector assembly includes a solid state radiation detector able to provide a detector signal directly proportional to a neutron flux level, a transmitter configured to wirelessly output a transmitter signal based on the detector signal and a second electrical interface configured to electrically couple to the first electrical interface. A power monitor system comprising a power sensor system and a control system and a method for optimizing a subcritical neutron generator are also provided.
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公开(公告)号：US11923167B2
公开(公告)日：2024-03-05
申请号：US18087277
申请日：2022-12-22
发明人： Hiroshi Matsushita
IPC分类号： H01J37/244 , G01T3/00 , H01J37/147 , H01J37/317
CPC分类号： H01J37/244 , G01T3/00 , H01J37/1472 , H01J37/3171 , H01J2237/0473 , H01J2237/2448
摘要： An ion implanter includes: a plurality of devices which are disposed along a beamline along which an ion beam is transported; a plurality of neutron ray measuring instruments which are disposed at a plurality of positions in the vicinity of the beamline and measure a neutron ray from a neutron ray source which is generated in the beamline due to collision of a high-energy ion beam; and a control device which monitors at least one of the plurality of devices, based on a plurality of measurement values measured by the plurality of neutron ray measuring instruments.
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公开(公告)号：US11867852B1
公开(公告)日：2024-01-09
申请号：US18340396
申请日：2023-06-23
申请人： Vector Atomic, Inc.
CPC分类号： G01T3/00
摘要： Embodiments herein describe an atomic sensor that includes a photonic die that outputs optical signals on a top surface. These optical signals can be directed and shaped as needed to satisfy a particular type of atomic sensor. In one embodiment, an atomic source (e.g., rubidium or cesium) is disposed on the photonic chip to emit atoms when heated. A collimator can then direct the emitted atoms along a path that intersects with the optical signals. This intersection can be used to detect motion (e.g., rotation and acceleration) of the atomic sensor.
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公开(公告)号：US11822026B2
公开(公告)日：2023-11-21
申请号：US18107491
申请日：2023-02-08
申请人： SHANDONG UNIVERSITY
发明人： Shuo Wang , Chenyao Han , Quanqi Shi , Xiaoli Wang , Pengzhi He
摘要： The present application relates to a detection structure for fast neutrons and a method for acquiring a neutron energy spectrum, the detection structure for fast neutrons comprises seven semiconductor detection units and a conversion layer made of a hydrogen-containing material, the seven semiconductor detection units comprise a first, a second, a third, a fourth, a fifth, a sixth and a seventh semiconductor detection unit arranged sequentially, the first, the fourth and the seventh semiconductor detection unit constitute an anticoincidence detection group, the second and the third semiconductor detection unit constitute a neutral particle background detection group, the fifth and the sixth semiconductor detection unit constitute a recoil proton detection group, the conversion layer is disposed between the fourth and the fifth semiconductor detection unit, incident neutrons collision with hydrogen atomic nuclei and generate the recoil protons. The present application can effectively reduce influence of background signals on the measurement and improve accuracy of the inversed neutron energy spectrum.
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公开(公告)号：US11621091B2
公开(公告)日：2023-04-04
申请号：US16732481
申请日：2020-01-02
发明人： Michael D. Heibel
IPC分类号： G21C17/112 , G01T3/00 , G01T3/02 , G21C17/108 , G01K11/30
摘要： A temperature measurement sensor for use in a nuclear reactor is described. The sensor includes a first neutron detector member and a second neutron detector member. The first neutron detector includes an outer shield material with an effective neutron capture cross section that is temperature dependent. The first neutron detector member outputs a first current signal and the second neutron detector member outputs a second current signal. An electrical connection between the first and second neutron detector members produces a net current that is the difference in current between the first and second signals. The difference is proportional to changes in temperature.
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公开(公告)号：US20230045923A1
公开(公告)日：2023-02-16
申请号：US17401988
申请日：2021-08-13
发明人： Christopher Freeman
IPC分类号： G01T3/00
摘要： A neutron proportional counter is provided. The proportional counter can include a chamber and a gas mixture. The chamber includes an anode and a cathode. The gas mixture is contained within the chamber and includes at least one neutron sensitive fill gas and a quench gas including BF3. In certain embodiments, the neutron sensitive fill gas can be configured for detection of thermal neutrons (e.g., He-3), fast neutrons (e.g., He-4, H2), or both (e.g., UF6).
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公开(公告)号：US11506803B2
公开(公告)日：2022-11-22
申请号：US17280031
申请日：2019-09-25
发明人： Weiping Liang
摘要： This application discloses a method and an apparatus for processing a nuclear energy spectrum. The apparatus includes: a detector, a nuclear pulse processing module, and a nuclear energy spectrum processing module; the detector is configured to detect nuclear radiation and convert the nuclear radiation into nuclear pulse signals with corresponding amplitudes; the nuclear pulse processing module is configured to shape the nuclear pulse signals into narrow pulses, and perform amplitude analysis on the narrow pulses to generate the nuclear energy spectrum; the nuclear energy spectrum processing module is configured to reduce a value of an energy resolution of the nuclear energy spectrum to obtain the nuclear energy spectrum with the energy resolution of the reduced value.
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公开(公告)号：US11408838B2
公开(公告)日：2022-08-09
申请号：US16618114
申请日：2018-05-28
发明人： Kai Krycki , John Kettler , Andreas Havenith
IPC分类号： G01N23/22 , G01N23/223 , G01T3/00
摘要： A method for a multielement analysis via neutron activation. The method includes generating fast neutrons with an energy in the range of 10 keV to 20 MeV and moderating the neutrons, irradiating the sample with the neutrons, and measuring the gamma radiation emitted by the irradiated sample using a detector to determine at least one element of the sample. The sample continuously irradiated in a non-pulsed fashion. The measurement is implemented during the irradiation. The determination of the at least one element includes an evaluation of the measured gamma radiation. The sample is subdivided into individual partitions and the measurement is implemented using a collimator. The evaluation includes a spatially resolved and energy-resolved determination of the neutron flux within the respective partition of the sample and calculation of energy-dependent photopeak efficiencies and neutron flux and neutron spectrum within a single partition of the sample by an approximation method.
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公开(公告)号：US11385364B2
公开(公告)日：2022-07-12
申请号：US16345403
申请日：2017-10-27
摘要： Various examples are provided for portable neutron imaging. In one example, a portable neutron-imaging system is described. A compact neutron source assembly can comprise an ion-beam bombardment source generating an isotropic source of monoenergetic neutrons. The neutron-imaging system does not include a moderator or collimator. Instead, the emission source and image-capture apparatus are placed in close proximity to an object to be imaged. Quality images were obtained with short exposure times of less than 20 seconds.
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