公开(公告)号：US11733409B2

公开(公告)日：2023-08-22

申请号：US17739841

申请日：2022-05-09

申请人： Photonis Scientific, Inc.

发明人： Brian White ,  W. Bruce Feller ,  R. Gregory Downing

IPC分类号： G01T3/08 ,  G01T3/00 ,  G01T1/28 ,  H01J31/50

CPC分类号： G01T3/085 ,  G01T1/28 ,  G01T3/00 ,  H01J31/50

摘要： A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The flight tube enables neutrons from the neutron generator to enter the flight tube through an input opening and exit through an output opening. The stage supports a sample object to receive neutrons that pass through the entire length of the flight tube and the output opening. The neutron imaging module has a neutron-sensitive component that receives neutrons that pass through the sample object and generates neutron detection signals. The neutron shield surrounds at least a portion of the flight tube and the neutron imaging module to block at least a portion of stray neutrons that travel toward the neutron-sensitive component of the neutron imaging module, in which the stray neutrons do not enter the flight tube through the input opening of the flight tube.

公开(公告)号：US20220342097A1

公开(公告)日：2022-10-27

申请号：US17739841

申请日：2022-05-09

申请人： Photonis Scientific, Inc.

发明人： Brian White ,  W. Bruce Feller ,  R. Gregory Downing

IPC分类号： G01T3/08 ,  G01T1/28 ,  G01T3/00 ,  H01J31/50

摘要： A neutron imaging system includes a neutron generator, a flight tube, a stage, a neutron imaging module, and a neutron shield. The neutron generator is configured to provide neutrons. The flight tube has an input opening, an output opening, and a flight tube wall extending from the input opening to the output opening. The flight tube is positioned relative to the neutron generator to enable neutrons from the neutron generator to enter the flight tube through the input opening and exit the flight tube through the output opening. The stage is configured to support a sample object at a position to receive neutrons that pass through the entire length of the flight tube and then pass through the output opening of the flight tube. The neutron imaging module has a neutron-sensitive component that is sensitive to neutrons and configured to receive neutrons that pass through the sample object and generate neutron detection signals that can be used to generate an image or video of the sample object. The neutron shield surrounds at least a portion of the flight tube and at least a portion of the neutron imaging module to block at least a portion of stray neutrons that travel toward the neutron-sensitive component of the neutron imaging module, in which the stray neutrons do not enter the flight tube through the input opening of the flight tube.

公开(公告)号：US11037770B2

公开(公告)日：2021-06-15

申请号：US16460300

申请日：2019-07-02

申请人： PHOTONIS SCIENTIFIC, INC.

发明人： Matthew Breuer

IPC分类号： H01J43/06 ,  H01J9/24

摘要： A channel electron multiplier having a high aspect ratio and differential coatings along its channel length is disclosed. The elongated tube has an input end, an output end, and an interior surface extending along the length of the tube between the input end and the output end. The channel electron multiplier also has first and second conductive layers formed on the interior surface of the tube. The first conductive layer is selected to provide a first electrical resistance, a first electron emission characteristic, or both, and the second conductive layer is selected to provide a second electrical resistance, a second electron emission characteristic, or both. A method of making a channel electron multiplier having two or more different conductive layers is also disclosed.