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公开(公告)号：US20210343444A1
公开(公告)日：2021-11-04
申请号：US17378099
申请日：2021-07-16
Inventor： William Graves
Abstract: A method includes accelerating an electron bunch along a direction of propagation to a relativistic energy and partitioning the electron bunch by transmitting the electron bunch through a grating at the relativistic energy. The grating includes a plurality of alternating narrow portions and wide portions. The narrow portions have a first thickness in a direction substantially parallel to the direction of propagation of the electron bunch, and the wide portions have a second thickness in the direction substantially parallel to the direction of propagation of the electron bunch. The second thickness is greater than the first thickness. The method also includes generating a pulse of light using the partitioned electron bunch.
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公开(公告)号：US20210341399A1
公开(公告)日：2021-11-04
申请号：US17378094
申请日：2021-07-16
Inventor： William Graves , Lucas Malin
IPC: G01N23/20008
Abstract: A method includes simulating diffraction in a transmission geometry of relativistic electron bunches from a crystallographic structure of a crystal thereby simulating diffraction of the relativistic electron bunches into a plurality of Bragg peaks. The method includes selecting a range of angles between a direction of propagation of the relativistic electron bunches and a normal direction of crystal including an angle at which a diffraction portion is maximized. The method includes sequentially accelerating a plurality of physical electron bunches to relativistic energies toward a physical crystal having the crystallographic structure and diffracting the plurality of physical electron bunches off the physical crystal at different angles and measuring the diffraction portion into the respective Bragg peak at the different angles. The method includes selecting a final angle based on the measured diffraction portion into the respective Bragg peak at the different angles and generating a pulse of light.
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公开(公告)号：US11915837B2
公开(公告)日：2024-02-27
申请号：US17378094
申请日：2021-07-16
Inventor： William Graves , Lucas Malin
IPC: G21K1/06 , H01S4/00 , H05G2/00 , G01N23/20008
CPC classification number: G21K1/062 , G01N23/20008 , H01S4/00 , H05G2/008 , G01N2223/0565 , G01N2223/102 , G21K2201/061 , G21K2201/067
Abstract: A method includes simulating diffraction in a transmission geometry of relativistic electron bunches from a crystallographic structure of a crystal thereby simulating diffraction of the relativistic electron bunches into a plurality of Bragg peaks. The method includes selecting a range of angles between a direction of propagation of the relativistic electron bunches and a normal direction of crystal including an angle at which a diffraction portion is maximized. The method includes sequentially accelerating a plurality of physical electron bunches to relativistic energies toward a physical crystal having the crystallographic structure and diffracting the plurality of physical electron bunches off the physical crystal at different angles and measuring the diffraction portion into the respective Bragg peak at the different angles. The method includes selecting a final angle based on the measured diffraction portion into the respective Bragg peak at the different angles and generating a pulse of light.
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公开(公告)号：US11875910B2
公开(公告)日：2024-01-16
申请号：US17350464
申请日：2021-06-17
Inventor： William Graves
IPC: G21K1/06
CPC classification number: G21K1/06 , G21K2201/064 , G21K2201/067
Abstract: An optical apparatus is provided for manipulating light from x-ray sources (e.g., free electron lasers). In some embodiments, the optical apparatus includes a first capillary optic having a first longitudinal axis and a second capillary optic having a second longitudinal axis that is angled with respect to the first longitudinal axis. The second capillary optic is positioned to receive light directly from the first capillary optic.
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Patent Agency Ranking
公开(公告)号：US20210384001A1
公开(公告)日：2021-12-09
申请号：US17407748
申请日：2021-08-20
Inventor： William Graves , Mark Holl
Abstract: Some embodiments of the present disclosure provide a method that includes colliding a laser with an electron beam to produce backscattered x-rays while the electron beam is traversing a circular arc. This backscattering process is inverse Compton scattering (ICS). ICS x-rays are emitted in the same direction as the electrons. Because this ICS direction is changing as a function of time, the position of the x-ray beam on a detector will change depending on the timing of electron/laser collision. This position change is easily detected and converted to a timing measurement sensitive at the femtosecond scale, converting a very difficult timing measurement of laser pulse, electron pulse, and x-ray pulse synchronization into a simple and robust position measurement.
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公开(公告)号：US20210313085A1
公开(公告)日：2021-10-07
申请号：US17350464
申请日：2021-06-17
Inventor： William Graves
IPC: G21K1/06
Abstract: An optical apparatus is provided for manipulating light from x-ray sources (e.g., free electron lasers). In some embodiments, the optical apparatus includes a first capillary optic having a first longitudinal axis and a second capillary optic having a second longitudinal axis that is angled with respect to the first longitudinal axis. The second capillary optic is positioned to receive light directly from the first capillary optic.
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公开(公告)号：US11798706B2
公开(公告)日：2023-10-24
申请号：US17378099
申请日：2021-07-16
Inventor： William Graves
IPC: G21K1/06 , H01S4/00 , H05G2/00 , G01N23/20008
CPC classification number: G21K1/062 , G01N23/20008 , H01S4/00 , H05G2/008 , G01N2223/0565 , G01N2223/102 , G21K2201/061 , G21K2201/067
Abstract: A method includes accelerating an electron bunch along a direction of propagation to a relativistic energy and partitioning the electron bunch by transmitting the electron bunch through a grating at the relativistic energy. The grating includes a plurality of alternating narrow portions and wide portions. The narrow portions have a first thickness in a direction substantially parallel to the direction of propagation of the electron bunch, and the wide portions have a second thickness in the direction substantially parallel to the direction of propagation of the electron bunch. The second thickness is greater than the first thickness. The method also includes generating a pulse of light using the partitioned electron bunch.
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公开(公告)号：US11562874B2
公开(公告)日：2023-01-24
申请号：US17334534
申请日：2021-05-28
Inventor： William Graves , Vinod Bharadwaj , Valery Dolgashev , Philipp Borchard
Abstract: A photoinjector system containing modularly-structured waveguide-mode launcher, which is reversibly connected to the RF gun (containing a tubular construction formed with disattachably-affixed to one another structurally-complementary halves); and a solenoid magnet in operation enclosing such tubular structure in a central hollow. The resulting quality, power, and frequency rate of operation as well as cost of manufacturing and operation of the system are superior as compared with those of a related art system.
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公开(公告)号：US11715617B2
公开(公告)日：2023-08-01
申请号：US17407748
申请日：2021-08-20
Inventor： William Graves , Mark Holl
CPC classification number: H01J35/153 , H05G1/02 , H05G1/28 , H05G1/52 , H01J2235/08 , H04N5/32
Abstract: Some embodiments of the present disclosure provide a method that includes colliding a laser with an electron beam to produce backscattered x-rays while the electron beam is traversing a circular arc. This backscattering process is inverse Compton scattering (ICS). ICS x-rays are emitted in the same direction as the electrons. Because this ICS direction is changing as a function of time, the position of the x-ray beam on a detector will change depending on the timing of electron/laser collision. This position change is easily detected and converted to a timing measurement sensitive at the femtosecond scale, converting a very difficult timing measurement of laser pulse, electron pulse, and x-ray pulse synchronization into a simple and robust position measurement.
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