Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube
    12.
    发明授权
    Apparatus with a cap and cover assembly, an electron gun with a cap assembly, and a method of using a tube 失效
    具有盖和盖组件的装置,具有盖组件的电子枪以及使用管的方法

    公开(公告)号:US06911770B2

    公开(公告)日:2005-06-28

    申请号:US09683683

    申请日:2002-02-01

    CPC classification number: H01J3/38 H01J9/00 H01J29/86 H01J2209/26

    Abstract: A cap can comprise an aperture, and an attenuator may block the aperture during at least one point in time. In one embodiment, the attenuator can include a cover that may be displaced by a spring. In another embodiment, such as an electron gun, may comprise a support cap with an aperture, a displaceable cover that may cover the aperture, and a spring. A material attached to the spring and acting as a fuse may release the spring and expose the aperture after an electrical current blows the “fuse”. In yet another embodiment, a method for using a tube may comprise evacuating the tube while a cover covers an aperture in the support cap of a electron gun that is at least partially in the tube and moving the cover to expose the aperture after the tube is sealed.

    Abstract translation: 盖可以包括孔,并且衰减器可以在至少一个时间点期间阻挡孔。 在一个实施例中,衰减器可以包括可以被弹簧置换的盖。 在另一个实施例中,例如电子枪,可以包括具有孔的支撑帽,可覆盖孔的位移盖和弹簧。 附着在弹簧上作为保险丝的材料可能在电流吹动“保险丝”之后释放弹簧并露出孔。 在另一个实施例中,使用管的方法可以包括抽空管,同时盖覆盖至少部分在管中的电子枪的支撑帽中的孔,并且在管是管之后移动盖以暴露孔 密封。

    Method and apparatus for fabrication of high gradient insulators with
parallel surface conductors spaced less than one millimeter apart
    13.
    发明授权
    Method and apparatus for fabrication of high gradient insulators with parallel surface conductors spaced less than one millimeter apart 失效
    用于制造具有间隔小于1毫米的平行表面导体的高梯度绝缘体的方法和装置

    公开(公告)号:US5955221A

    公开(公告)日:1999-09-21

    申请号:US976244

    申请日:1997-11-21

    CPC classification number: G03F7/70408 G03F7/001 G03F7/20 H01J3/38

    Abstract: Optical patterns and lithographic techniques are used as part of a process to embed parallel and evenly spaced conductors in the non-planar surfaces of an insulator to produce high gradient insulators. The approach extends the size that high gradient insulating structures can be fabricated as well as improves the performance of those insulators by reducing the scale of the alternating parallel lines of insulator and conductor along the surface. This fabrication approach also substantially decreases the cost required to produce high gradient insulators.

    Abstract translation: 使用光学图案和光刻技术作为在绝缘体的非平坦表面中嵌入平行且均匀间隔的导体以产生高梯度绝缘体的工艺的一部分。 该方法延伸了可以制造高梯度绝缘结构的尺寸,并且通过减小沿表面的绝缘体和导体的交替平行线的尺度来提高那些绝缘体的性能。 这种制造方法也大大降低了生产高梯度绝缘体所需的成本。

    Low Aberration, High Intensity Electron Beam For X-Ray Tubes
    16.
    发明申请
    Low Aberration, High Intensity Electron Beam For X-Ray Tubes 有权
    低畸变,高强度电子束X射线管

    公开(公告)号:US20160189908A1

    公开(公告)日:2016-06-30

    申请号:US14586066

    申请日:2014-12-30

    Inventor: Sergio Lemaitre

    Abstract: In the present invention, a cathode for an x-ray tube is formed with a large area flat emitter. To reduce the aberrations to a minimum the emission area in the flat emitter has a non-rectangular shape and focusing pads arranged around the emitter. In an exemplary embodiment, the flat emitter has a non-rectilinear polygonal shape for an emission area on the emitter in order to increase the emission current from the emitter at standard voltage levels without the need to run the emitters at a higher temperature, add additional emitters to the cathode and/or to coat the emitters with a low work function material.

    Abstract translation: 在本发明中,用于X射线管的阴极形成有大面积的平坦发射体。 为了将像差减小到最小,扁平发射器中的发射面积具有非矩形形状和围绕发射极布置的聚焦焊盘。 在示例性实施例中,扁平发射器具有用于发射极上的发射区域的非直线多边形形状,以便在标准电压电平下增加来自发射极的发射电流,而不需要在较高温度下运行发射器,增加额外的 发射器到阴极和/或用低功函数材料涂覆发射器。

    Electron gun
    18.
    发明申请
    Electron gun 有权
    电子枪

    公开(公告)号:US20030218413A1

    公开(公告)日:2003-11-27

    申请号:US10443817

    申请日:2003-05-23

    Inventor: Akira Chiba

    CPC classification number: H01J3/027 H01J3/028 H01J3/38 H01J23/06

    Abstract: An electron gun also has a cathode for emitting electrons, a heater cap which contains a heater for applying the cathode with thermal energy for emitting electrons, a retainer for securing the cathode on the heater cap by clamping the peripheral edge of the cathode onto the heater cap, and a cylindrical Wehnelt supporter. The cylindrical Wehnelt supporter has a Wehnelt electrode for focusing an electron beam that is formed in such a shape that an average angle of the surface thereof with respect to an outermost shell of the electron beam matches a Pierce angle, and three or more heater cap supporters for securely supporting the heater cap at a position at which an electron emitting surface of the cathode and an opening formed through the wehnelt electrode satisfy a predetermined perveance.

    Abstract translation: 电子枪还具有用于发射电子的阴极,加热器帽,其包含用于向发射电子的热能施加阴极的加热器,用于通过将阴极的周边边缘夹持在加热器上来将阴极固定在加热器盖上的保持器 帽和圆柱形的Wehnelt支持者。 圆筒形的Wehnelt支架具有用于聚焦电子束的Wehnelt电极,该电子束形成为使得其表面相对于电子束的最外壳的平均角度与Pierce角相匹配的形状,以及三个或更多个加热器帽支撑件 用于在阴极的电子发射表面和通过微孔电极形成的开口满足预定的范围的位置处可靠地支撑加热器盖。

    Photomultiplier tube having a stress isolation cage assembly
    19.
    发明授权
    Photomultiplier tube having a stress isolation cage assembly 失效
    具有应力隔离笼组件的光电倍增管

    公开(公告)号:US4355258A

    公开(公告)日:1982-10-19

    申请号:US216906

    申请日:1980-12-16

    CPC classification number: H01J43/00 H01J3/38

    Abstract: A photomultiplier tube comprises an evacuated envelope having a photoemissive cathode therein. A cage assembly including an anode and a plurality of closely spaced dynodes are within the envelope. The anode has at least one support rod. Each of the dynodes has a pair of dynode tabs formed in the ends thereof. A pair of dynode support spacers having a plurality of stress isolation apertures and electrode support apertures formed therethrough are provided for supporting the dynodes and the anode. The dynode tabs and the anode support rod extend through the electrode support apertures. A plurality of deformable stress isolation eyelets comprising a tubular shank with a flare formed in one end of the shank are disposed within a different one of the stress isolation apertures. The flare diameter is greater than the diameter of the stress isolation apertures thereby retaining the eyelets within the apertures. A second end of the tubular shank, opposite the flared end, extends outwardly from the dynode support spacers. The outwardly extending end portion is crimped to lock the eyelets within the stress isolation apertures. Nickel leads are provided for flexibly interconnecting the crimped end portion of a different one of each of the eyelets to one end of each of the dynodes and to one end of the anode support rod. A stem closes one end of the envelope. A plurality of relatively stiff cage assembly support leads extend through the stem and are welded to the crimped end portion of the eyelets thereby firmly securing the cage assembly to the support leads and indirectly connecting the support leads to the dynodes and the anode.

    Abstract translation: 光电倍增管包括其中具有光发射阴极的真空外壳。 包括阳极和多个紧密间隔的倍增电极的笼组件在封套内。 阳极具有至少一个支撑杆。 每个倍增极在其端部中形成有一对倍增极片。 提供了一对具有多个应力隔离孔的倍增极支撑间隔物和通过其形成的电极支撑孔,用于支撑倍增电极和阳极。 倍增极片和阳极支撑杆延伸穿过电极支撑孔。 多个可变形应力隔离孔眼包括在柄的一端形成有喇叭口的管状柄,其设置在不同的一个应力隔离孔内。 喇叭直径大于应力隔离孔的直径,从而将孔眼保持在孔内。 管状柄的与扩口端相对的第二端从倍增极支撑间隔件向外延伸。 向外延伸的端部被压接以将孔眼锁定在应力隔离孔内。 提供镍引线用于将每个孔眼中的不同的一个的卷曲端部与每个倍增电极的一端和阳极支撑杆的一端灵活地互连。 杆关闭信封的一端。 多个相对刚性的笼组件支撑引线延伸穿过杆并且焊接到孔眼的压接端部,从而将保持架组件牢固地固定到支撑引线并将支撑引线间接地连接到倍增电极和阳极。

    Low volume, lightweight, high voltage electron gun
    20.
    发明授权
    Low volume, lightweight, high voltage electron gun 失效
    体积小,重量轻,高压电子枪

    公开(公告)号:US4340837A

    公开(公告)日:1982-07-20

    申请号:US110960

    申请日:1980-01-10

    Inventor: Thomas W. Meyer

    CPC classification number: H01J3/38

    Abstract: A low volume, lightweight, high voltage electron gun having an overall size and weight of approximately 50% the size and weight of a conventional electron gun of the same output. This is accomplished by interposing between the cathode and the walls of the housing of the electron gun a thin piece of dielectric material of preselected breakdown strength. The dielectric material is in direct contact with both the cathode and the housing of the electron gun, with the voltage stress between the walls of the housing and the cathode being such that it does not exceed the breakdown strength of the dielectric material.

    Abstract translation: 一种体积小,重量轻的高压电子枪,其总体尺寸和重量相同输出的常规电子枪的尺寸和重量约为50%。 这是通过在阴极和电子枪壳体的壁之间插入预先击穿强度的薄的介电材料片来实现的。 电介质材料与电子枪的阴极和壳体直接接触,壳体的壁和阴极之间的电压应力使得其不超过电介质材料的击穿强度。

Patent Agency Ranking