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    High average current, high quality pulsed electron injector
    1.
    发明授权
    High average current, high quality pulsed electron injector 失效
    高平均电流，高质量脉冲电子注入器

    公开(公告)号：US08564224B2

    公开(公告)日：2013-10-22

    申请号：US13109131

    申请日：2011-05-17

    申请人： Phillip A. Sprangle ,  Steven H. Gold ,  Antonio C. Ting ,  Joseph R. Penano ,  Daniel F. Gordon ,  Bahman Hafizi

    发明人： Phillip A. Sprangle ,  Steven H. Gold ,  Antonio C. Ting ,  Joseph R. Penano ,  Daniel F. Gordon ,  Bahman Hafizi

    IPC分类号： H01J23/06 ,  H01J3/14

    CPC分类号： H01J23/06

    摘要： An electron injector including an electron source and a conducting grid situated close to the electron source, one or more RF accelerating/bunching cavities operating at the same fundamental RF frequency; a DC voltage source configured to bias the cathode at a small positive voltage with respect to the grid; a first RF drive configured to apply an RF signal between the cathode and grid at the fundamental and third harmonic RF frequencies; and a second RF drive configured to apply an RF drive signal to the accelerating/bunching cavities. Electrons are emitted by the cathode and travel through the grid to the accelerating/bunching cavities for input into an RF linac. The first RF drive applies a first RF drive signal at the fundamental frequency of the linac plus higher harmonics thereof to the gap between the cathode and the grid to cause the emitted electrons to form electron bunches and the second RF drive applies a second RF drive signal to the accelerating/bunching cavities on the other side of the grid to further accelerate and optimize the size of the electron bunches. Because the applied RF signals contain at the fundamental linac frequency, the electrons are bunched at that frequency and each RF bucket of the linac is filled with an electron bunch.

    摘要翻译： 一种电子注入器，包括靠近电子源的电子源和导电栅格，在相同的基本RF频率下工作的一个或多个RF加速/聚束腔; DC电压源，被配置为相对于所述栅极以小的正电压偏压所述阴极; 第一RF驱动器，被配置为在所述基极和三次谐波RF频率处在所述阴极和电网之间施加RF信号; 以及被配置为将RF驱动信号施加到加速/聚束空腔的第二RF驱动器。 电子由阴极发射并通过栅格传播到加速/聚束腔，以输入到RF线性加速器。 第一RF驱动器将线性加速器的基频加上其高次谐波的第一RF驱动信号施加到阴极和栅格之间的间隙，以使发射的电子形成电子束，并且第二RF驱动器施加第二RF驱动信号 到网格另一侧的加速/聚束腔，以进一步加速和优化电子束的尺寸。 因为所施加的RF信号包含基线频率，所以电子以该频率聚束，并且直线加速器的每个RF桶被电子束填充。

    High Average Current, High Quality Pulsed Electron Injector
    2.
    发明申请
    High Average Current, High Quality Pulsed Electron Injector 失效
    高平均电流，高质量脉冲电子注射器

    公开(公告)号：US20110304283A1

    公开(公告)日：2011-12-15

    申请号：US13109131

    申请日：2011-05-17

    申请人： Phillip A. Sprangle ,  Steven H. Gold ,  Antonio C. Ting ,  Joseph R. Penano ,  Daniel F. Gordon ,  Bahman Hafizi

    发明人： Phillip A. Sprangle ,  Steven H. Gold ,  Antonio C. Ting ,  Joseph R. Penano ,  Daniel F. Gordon ,  Bahman Hafizi

    IPC分类号： H01J23/06 ,  H01J3/14

    CPC分类号： H01J23/06

    摘要： An electron injector including an electron source and a conducting grid situated close to the electron source, one or more RF accelerating/bunching cavities operating at the same fundamental RF frequency; a DC voltage source configured to bias the cathode at a small positive voltage with respect to the grid; a first RF drive configured to apply an RF signal between the cathode and grid at the fundamental and third harmonic RF frequencies; and a second RF drive configured to apply an RF drive signal to the accelerating/bunching cavities. Electrons are emitted by the cathode and travel through the grid to the accelerating/bunching cavities for input into an RF linac. The first RF drive applies a first RF drive signal at the fundamental frequency of the linac plus higher harmonics thereof to the gap between the cathode and the grid to cause the emitted electrons to form electron bunches and the second RF drive applies a second RF drive signal to the accelerating/bunching cavities on the other side of the grid to further accelerate and optimize the size of the electron bunches. Because the applied RF signals contain at the fundamental linac frequency, the electrons are bunched at that frequency and each RF bucket of the linac is filled with an electron bunch.

    摘要翻译： 一种电子注入器，包括靠近电子源的电子源和导电栅格，在相同的基本RF频率下工作的一个或多个RF加速/聚束腔; DC电压源，被配置为相对于所述栅极以小的正电压偏压所述阴极; 第一RF驱动器，被配置为在所述基极和三次谐波RF频率处在所述阴极和电网之间施加RF信号; 以及被配置为将RF驱动信号施加到加速/聚束空腔的第二RF驱动器。 电子由阴极发射并通过栅格传播到加速/聚束腔，以输入到RF线性加速器。 第一RF驱动器将线性加速器的基频加上其高次谐波的第一RF驱动信号施加到阴极和栅格之间的间隙，以使发射的电子形成电子束，并且第二RF驱动器施加第二RF驱动信号 到网格另一侧的加速/聚束腔，以进一步加速和优化电子束的尺寸。 因为所施加的RF信号包含基线频率，所以电子以该频率聚束，并且直线加速器的每个RF桶被电子束填充。

    Remotely induced atmospheric lasing
    4.
    发明授权
    Remotely induced atmospheric lasing 有权
    遥感诱发大气激光

    公开(公告)号：US08665923B2

    公开(公告)日：2014-03-04

    申请号：US13334172

    申请日：2011-12-22

    申请人： Phillip A. Sprangle ,  Joseph R. Penano ,  Marlan O. Scully ,  Daniel F. Gordon ,  Bahman Hafizi

    发明人： Phillip A. Sprangle ,  Joseph R. Penano ,  Marlan O. Scully ,  Daniel F. Gordon ,  Bahman Hafizi

    IPC分类号： H01S3/091

    CPC分类号： H01S3/2237 ,  H01S3/0057 ,  H01S3/0959 ,  H01S3/104 ,  H01S3/2391

    摘要： A laser pulse from an ultrashort pulse laser (USPL) is fired into the atmosphere. The USPL pulse is configured to generate a plasma filament at a predefined target in the atmosphere, in which free, or “seed,” electrons are generated by multi-photon or tunneling ionization of the air molecules in the filament. A second pulse is fired into the atmosphere to form a heater beam that impinges on the plasma filament and thermalizes the seed electrons within the plasma filament, leading to the collisional excitation of the electrons in the filament. The excited electrons collisionally excite various electronic and vibrational states of the air molecules in the filament, causing population inversions and lasing, e.g., exciting the C3Πu→B3Πg(v=0→0) transition of the N2 in the atmosphere to cause lasing at 337 nm.

    摘要翻译： 来自超短脉冲激光（USPL）的激光脉冲被激发到大气中。 USPL脉冲被配置为在大气中的预定目标下产生等离子体灯丝，其中通过灯丝中的空气分子的多光子或隧道电离产生游离或“种子”电子。 将第二脉冲发射到大气中以形成冲击等离子体灯丝的加热器束，并使等离子体灯丝内的种子电子发热，导致灯丝中电子的碰撞激发。 激发的电子碰撞地激发细丝中空气分子的各种电子和振动状态，引起群体反转和激光，例如激发大气中N2的C3Piu→B3Pig（v = 0→0）跃迁，引起激光 在337nm。

    QUASI-REMOTE LASER PULSE COMPRESSION AND GENERATION OF RADIATION AND PARTICLE BEAMS
    5.
    发明申请
    QUASI-REMOTE LASER PULSE COMPRESSION AND GENERATION OF RADIATION AND PARTICLE BEAMS 有权
    临时远程激光脉冲压缩和辐射和颗粒物的产生

    公开(公告)号：US20120327963A1

    公开(公告)日：2012-12-27

    申请号：US13529167

    申请日：2012-06-21

    申请人： Richard F. Hubbard ,  Antonio C. Ting ,  Joseph R. Peñano ,  Daniel F. Gordon ,  Phillip A. Sprangle ,  Bahman Hafizi ,  Arie Zigler

    发明人： Richard F. Hubbard ,  Antonio C. Ting ,  Joseph R. Peñano ,  Daniel F. Gordon ,  Phillip A. Sprangle ,  Bahman Hafizi ,  Arie Zigler

    IPC分类号： H01S3/13

    CPC分类号： H01S3/0057 ,  H01S3/005 ,  H05G2/00

    摘要： A system and methods for the quasi-remote compression and focusing of a moderate-intensity laser pulse to form a much higher intensity beam that can be directed at a target and used as a probe beam or used in a probe beam converter to generate other forms of electromagnetic radiation or energetic particles. A system for the quasi-remote propagation of high-intensity laser beams in accordance with the present invention comprises a main platform on which a first, “seed” laser pulse is generated, stretched, and amplified, and a remote platform, located at a distance from the main platform, which is configured to receive the amplified and stretched pulse and convert it into the high-intensity laser beam. The high-intensity laser beam in turn can then be converted into one or more probe beams directed at a target object.

    摘要翻译： 用于准远程压缩和聚焦中等强度激光脉冲以形成更高强度的光束的系统和方法，其可以指向目标并用作探测光束或用于探测光束转换器以产生其他形式 的电磁辐射或高能粒子。 根据本发明的用于高强度激光束的准远程传播的系统包括主平台，其上产生，拉伸和放大第一种子激光脉冲，以及远离平台，远离平台 主平台被配置为接收放大和拉伸的脉冲并将其转换成高强度激光束。 然后可以将高强度激光束转换为指向目标物体的一个或多个探测光束。

    Quasi-remote laser pulse compression and generation of radiation and particle beams
    6.
    发明授权
    Quasi-remote laser pulse compression and generation of radiation and particle beams 有权
    准远程激光脉冲压缩和辐射和粒子束的产生

    公开(公告)号：US08351476B1

    公开(公告)日：2013-01-08

    申请号：US13529167

    申请日：2012-06-21

    申请人： Richard F. Hubbard ,  Antonio C. Ting ,  Joseph R. Peñano ,  Daniel F. Gordon ,  Phillip A. Sprangle ,  Bahman Hafizi ,  Arie Zigler

    发明人： Richard F. Hubbard ,  Antonio C. Ting ,  Joseph R. Peñano ,  Daniel F. Gordon ,  Phillip A. Sprangle ,  Bahman Hafizi ,  Arie Zigler

    IPC分类号： H01S3/10 ,  H01S3/098

    CPC分类号： H01S3/0057 ,  H01S3/005 ,  H05G2/00

    摘要： A system and methods for the quasi-remote compression and focusing of a moderate-intensity laser pulse to form a much higher intensity beam that can be directed at a target and used as a probe beam or used in a probe beam converter to generate other forms of electromagnetic radiation or energetic particles. A system for the quasi-remote propagation of high-intensity laser beams in accordance with the present invention comprises a main platform on which a first, “seed” laser pulse is generated, stretched, and amplified, and a remote platform, located at a distance from the main platform, which is configured to receive the amplified and stretched pulse and convert it into the high-intensity laser beam. The high-intensity laser beam in turn can then be converted into one or more probe beams directed at a target object.

    摘要翻译： 用于准远程压缩和聚焦中等强度激光脉冲以形成更高强度的光束的系统和方法，其可以指向目标并用作探测光束或用于探测光束转换器以产生其他形式 的电磁辐射或高能粒子。 根据本发明的用于高强度激光束的准远程传播的系统包括主平台，其上产生，拉伸和放大第一种子激光脉冲，以及远离平台，远离平台 主平台被配置为接收放大和拉伸的脉冲并将其转换成高强度激光束。 然后可以将高强度激光束转换为指向目标物体的一个或多个探测光束。

    Compact, all-optical generation of coherent X-rays
    9.
    发明授权
    Compact, all-optical generation of coherent X-rays 有权
    紧凑的全光学相干X射线产生

    公开(公告)号：US09370085B2

    公开(公告)日：2016-06-14

    申请号：US14798599

    申请日：2015-07-14

    申请人： Dmitri Kaganovich ,  Antonio C. Ting ,  Michael H. Helle ,  Daniel F. Gordon ,  Bahman Hafizi ,  John Palastro

    发明人： Dmitri Kaganovich ,  Antonio C. Ting ,  Michael H. Helle ,  Daniel F. Gordon ,  Bahman Hafizi ,  John Palastro

    IPC分类号： H05G2/00 ,  H01S4/00

    CPC分类号： H05G2/008 ,  H01S4/00 ,  H05G2/003

    摘要： A method for generating coherent, polarized, and tunable X-rays using a single laser pulse is provided. An ultrashort laser pulse is fired into a plasma. As the laser beam travels through the plasma, some of its photons are backscattered, e.g., through Raman backscattering, to generate a counter-propagating photon beam that is co-linear with the original laser beam. When the backscattered photons interact with high-energy accelerated periodic electron bunches, coherent X-rays are generated through Compton backscattering of the photons off of the electrons. The energy of the backscattered X-rays can be tuned by tuning one or more characteristics of the laser pulse and/or the plasma.

    摘要翻译： 提供了使用单个激光脉冲产生相干，极化和可调谐X射线的方法。 将超短激光脉冲发射到等离子体中。 当激光束穿过等离子体时，其一些光子被反向散射，例如通过拉曼反向散射，以产生与原始激光束共线的反向传播的光子束。 当后向散射光子与高能加速周期性电子束相互作用时，通过离子电子的光子的康普顿反向散射产生相干X射线。 可以通过调谐激光脉冲和/或等离子体的一个或多个特性来调节背散射X射线的能量。

    Compact, All-Optical Generation of Coherent X-Rays
    10.
    发明申请
    Compact, All-Optical Generation of Coherent X-Rays 有权
    紧凑型全光生成相干X射线

    公开(公告)号：US20160014874A1

    公开(公告)日：2016-01-14

    申请号：US14798599

    申请日：2015-07-14

    申请人： Dmitri Kaganovich ,  Antonio C. Ting ,  Michael H. Helle ,  Daniel F. Gordon ,  Bahman Hafizi ,  John Palastro

    发明人： Dmitri Kaganovich ,  Antonio C. Ting ,  Michael H. Helle ,  Daniel F. Gordon ,  Bahman Hafizi ,  John Palastro

    IPC分类号： H05G2/00

    CPC分类号： H05G2/008 ,  H01S4/00 ,  H05G2/003

    摘要： A method for generating coherent, polarized, and tunable X-rays using a single laser pulse is provided. An ultrashort laser pulse is fired into a plasma. As the laser beam travels through the plasma, some of its photons are backscattered, e.g., through Raman backscattering, to generate a counter-propagating photon beam that is co-linear with the original laser beam. When the backscattered photons interact with high-energy accelerated periodic electron bunches, coherent X-rays are generated through Compton backscattering of the photons off of the electrons. The energy of the backscattered X-rays can be tuned by tuning one or more characteristics of the laser pulse and/or the plasma.

    摘要翻译： 提供了使用单个激光脉冲产生相干，极化和可调谐X射线的方法。 将超短激光脉冲发射到等离子体中。 当激光束穿过等离子体时，其一些光子被反向散射，例如通过拉曼反向散射，以产生与原始激光束共线的反向传播的光子束。 当后向散射光子与高能加速周期性电子束相互作用时，通过离子电子的光子的康普顿反向散射产生相干X射线。 可以通过调谐激光脉冲和/或等离子体的一个或多个特性来调节背散射X射线的能量。