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    ELECTRON GUN
    61.
    发明申请
    ELECTRON GUN 审中-公开

    公开(公告)号：US20190027335A1

    公开(公告)日：2019-01-24

    申请号：US16041957

    申请日：2018-07-23

    Applicant: NEC Network and Sensor Systems, Ltd.

    Inventor： Akira Chiba

    IPC: H01J29/48 ,  H01J37/075

    Abstract: To suppress both influence of electron emission from a cathode side surface and consumption of energy to be supplied to a heater, while being provided with a grid, an electron gun of the present invention includes: a cathode capable of emitting electrons by heating; a grid capable of controlling the electron emission; and a cathode shield which is an conductor including a material portion located in the vicinity of a side surface of the cathode and facing at least a portion of the side surface via a gap or a heat insulating material, and not being made in direct physical coupling nor in direct physical contact with the cathode.

    PARTICLE BEAM GUN CONTROL SYSTEMS AND METHODS
    62.
    发明申请
    PARTICLE BEAM GUN CONTROL SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20190022422A1

    公开(公告)日：2019-01-24

    申请号：US15657036

    申请日：2017-07-21

    Applicant: Varian Medical Systems, Inc.

    Inventor： Mark Everett Trail ,  James Edward Clayton

    IPC: A61N5/10 ,  H05H9/00 ,  H01J37/075 ,  H01J37/147

    Abstract: Presented systems and methods facilitate efficient and effective monitoring of particle beams. In some embodiments, a radiation gun system comprises: a particle beam gun that generates a particle beam, and a gun control component that controls the gun particle beam generation characteristics, including particle beam fidelity characteristics. The particle beam characteristics can be compatible with FLASH radiation therapy. Resolution control of the particle beam generation can enable dose delivery at an intra-pulse level and micro-bunch level. The micro-bunch can include individual bunches per each 3 GHz RF cycle within the 5 to 15 μsec pulse-width. The FLASH radiation therapy dose delivery can have a bunch level resolution of approximately 4.4×10̂−6cGy/bunch.

    Electron gun and electron beam device
    64.
    发明授权
    Electron gun and electron beam device 有权
    电子枪和电子束装置

    公开(公告)号：US09070527B2

    公开(公告)日：2015-06-30

    申请号：US14000988

    申请日：2011-02-25

    Applicant: Hiroshi Yasuda

    Inventor： Hiroshi Yasuda

    IPC: H01J29/48 ,  H01J1/148 ,  H01J1/26 ,  H01J37/075 ,  H01J37/317 ,  H01J37/065 ,  H01J37/07 ,  H01J37/26 ,  B82Y10/00 ,  B82Y40/00

    CPC classification number: H01J29/485 ,  B82Y10/00 ,  B82Y40/00 ,  H01J1/148 ,  H01J1/26 ,  H01J37/065 ,  H01J37/07 ,  H01J37/075 ,  H01J37/26 ,  H01J37/3174

    Abstract: An electron gun cathode (104) is column shaped, and emits electrons by being heated. A holder (103), which covers the bottom and sides of the electron gun cathode, has electrical conductivity and holds the electron gun cathode, and is composed of a material that does not easily react with the electron gun cathode when in a heated state, is provided. The tip of the electron gun cathode (104) protrudes from the holder (103) so as to be exposed, and electrons are emitted from the tip toward the front by applying an electric field to the tip.

    Abstract translation: 电子枪阴极（104）为柱状，通过加热发射电子。 覆盖电子枪阴极的底部和侧面的保持器（103）具有导电性并保持电子枪阴极，并且由处于加热状态时不易与电子枪阴极反应的材料构成， 被提供。 电子枪阴极（104）的尖端从保持器（103）突出以露出，并且通过向尖端施加电场，从尖端向前方发射电子。

    High emittance electron source having high illumination uniformity
    65.
    发明授权
    High emittance electron source having high illumination uniformity 失效
    具有高照明均匀性的高发射率电子源

    公开(公告)号：US6091187A

    公开(公告)日：2000-07-18

    申请号：US57079

    申请日：1998-04-08

    Applicant: Steven D. Golladay ,  Rodney A. Kendall ,  Carl E. Bohnenkamp

    Inventor： Steven D. Golladay ,  Rodney A. Kendall ,  Carl E. Bohnenkamp

    IPC: H01J37/06 ,  H01J1/20 ,  H01J9/04 ,  H01J37/075 ,  H01J1/02

    CPC classification number: H01J1/20 ,  H01J9/042 ,  H01J2201/2867

    Abstract: Direct and indirect electron bombardment provide a sufficiently high degree of temperature uniformity across the emitting surface of a large-area electron source for an electron beam projection system such that a broad beam having illumination uniformity within 1% can be achieved. A diode gun is used to obtain extraction field uniformity and maintain uniformity of illumination. Power requirements and power dissipation in beam periphery truncating apertures is reduced by roughening the surface of a monocrystalline cathode or depositing materials having a higher work function thereon.

    Abstract translation: 直接和间接电子轰击在用于电子束投影系统的大面积电子源的发射表面上提供足够高的温度均匀度，使得可以实现具有在1％内的照明均匀性的宽光束。 二极管枪用于获得提取场均匀性并保持照明的均匀性。 通过使单晶阴极的表面粗糙化或在其上具有较高功函的沉积材料来减小光束外围截头孔中的功率需求和功率消耗。

    Voltage regulator circuit for an electron microscope
    66.
    发明授权
    Voltage regulator circuit for an electron microscope 失效
    用于电子显微镜的电压调节器电路

    公开(公告)号：US4066971A

    公开(公告)日：1978-01-03

    申请号：US744865

    申请日：1976-11-24

    Applicant: Siemer Siems

    Inventor： Siemer Siems

    IPC: H01J37/075 ,  H01J21/00

    CPC classification number: H01J37/075

    Abstract: A voltage regulator circuit for an electron microscope incorporates step-down and step-up transformers connected between the filament supply and the filament of a regulator triode. The triode has a cathode separate from the filament, the cathode being connected to the center-tapped primary of the step-up transformer. A magnification-reducing resistor may be connected across the grid and cathode of the triode.

    Abstract translation: 用于电子显微镜的电压调节器电路包括连接在灯丝供应器和调节器三极管灯丝之间的降压和升压变压器。 三极管具有与灯丝分离的阴极，阴极连接到升压变压器的中心抽头初级。 放大倍率减小电阻器可以连接在三极管的栅极和阴极之间。

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