会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Modified Faraday cup
    • 修改法拉第杯
    • US5554926A
    • 1996-09-10
    • US509552
    • 1995-07-31
    • John W. ElmerAlan T. TeruyaDennis W. O'Brien
    • John W. ElmerAlan T. TeruyaDennis W. O'Brien
    • G01R19/00G01R13/00
    • G01R19/0061
    • A tomographic technique for measuring the current density distribution in electron beams using electron beam profile data acquired from a modified Faraday cup to create an image of the current density in high and low power beams. The modified Faraday cup includes a narrow slit and is rotated by a stepper motor and can be moved in the x, y and z directions. The beam is swept across the slit perpendicular thereto and controlled by deflection coils, and the slit rotated such that waveforms are taken every few degrees form 0.degree. to 360.degree. and the waveforms are recorded by a digitizing storage oscilloscope. Two-din-tensional and three-dimensional images of the current density distribution in the beam can be reconstructed by computer tomography from this information, providing quantitative information about the beam focus and alignment.
    • 一种用于使用从修改的法拉第杯获得的电子束轮廓数据来测量电子束中的电流密度分布以在高功率和低功率光束中产生电流密度的图像的断层摄影技术。 修改后的法拉第杯包括狭窄的狭缝,并由步进电机旋转,并可在x,y和z方向上移动。 光束扫过与其垂直的狭缝并由偏转线圈控制,狭缝旋转,使得波形从0°至360°每隔几度进行,波形由数字化存储示波器记录。 可以通过计算机断层扫描从该信息重建光束中的电流密度分布的二维和三维图像,提供关于束聚焦和对准的定量信息。
    • 5. 发明授权
    • Enhanced modified faraday cup for determination of power density distribution of electron beams
    • 用于确定电子束功率密度分布的增强型改进法拉第杯
    • US06300755B1
    • 2001-10-09
    • US09320226
    • 1999-05-26
    • John W. ElmerAlan T. Teruya
    • John W. ElmerAlan T. Teruya
    • G01N2700
    • G01R19/0061H01J37/244H01J2237/24405
    • An improved tomographic technique for determining the power distribution of an electron or ion beam using electron beam profile data acquired by an enhanced modified Faraday cup to create an image of the current density in high and low power ion or electron beams. A refractory metal disk with a number of radially extending slits, one slit being about twice the width of the other slits, is placed above a Faraday cup. The electron or ion beam is swept in a circular pattern so that its path crosses each slit in a perpendicular manner, thus acquiring all the data needed for a reconstruction in one circular sweep. The enlarged slit enables orientation of the beam profile with respect to the coordinates of the welding chamber. A second disk having slits therein is positioned below the first slit disk and inside of the Faraday cup and provides a shield to eliminate the majority of secondary electrons and ions from leaving the Faraday cup. Also, a ring is located below the second slit disk to help minimize the amount of secondary electrons and ions from being produced. In addition, a beam trap is located in the Faraday cup to provide even more containment of the electron or ion beam when full beam current is being examined through the center hole of the modified Faraday cup.
    • 一种改进的断层摄影技术,用于使用由增强的改进的法拉第杯获得的电子束轮廓数据来确定电子或离子束的功率分布,以在高功率和低功率离子或电子束中产生电流密度的图像。 具有多个径向延伸狭缝的难熔金属盘,一个狭缝约为另一个狭缝宽度的两倍,放置在法拉第杯的上方。 电子或离子束以圆形图案扫描,使得其路径以垂直方式与每个狭缝交叉,从而获得一次循环扫描中重建所需的所有数据。 放大的狭缝使得能够相对于焊接室的坐标定位光束轮廓。 其中具有狭缝的第二盘定位在第一狭缝盘的下方和法拉第杯的内部,并且提供屏蔽物以消除大部分二次电子和离子离开法拉第杯。 此外,环位于第二狭缝盘的下方,以帮助最小化二次电子和离子的产生量。 此外,当通过修改的法拉第杯的中心孔检查全光束电流时,在法拉第杯中设置光束捕获器以提供更多的电子或离子束的容纳。
    • 10. 发明授权
    • Electron beam diagnostic for profiling high power beams
    • 用于分析高功率光束的电子束诊断
    • US07348568B2
    • 2008-03-25
    • US11159978
    • 2005-06-22
    • John W. ElmerTodd A. PalmerAlan T. Teruya
    • John W. ElmerTodd A. PalmerAlan T. Teruya
    • G01K1/16
    • G01R19/0061H01J37/244H01J2237/24405H01J2237/30433H01J2237/31
    • A system for characterizing high power electron beams at power levels of 10 kW and above is described. This system is comprised of a slit disk assembly having a multitude of radial slits, a conducting disk with the same number of radial slits located below the slit disk assembly, a Faraday cup assembly located below the conducting disk, and a start-stop target located proximate the slit disk assembly. In order to keep the system from over-heating during use, a heat sink is placed in close proximity to the components discussed above, and an active cooling system, using water, for example, can be integrated into the heat sink. During use, the high power beam is initially directed onto a start-stop target and after reaching its full power is translated around the slit disk assembly, wherein the beam enters the radial slits and the conducting disk radial slits and is detected at the Faraday cup assembly. A trigger probe assembly can also be integrated into the system in order to aid in the determination of the proper orientation of the beam during reconstruction. After passing over each of the slits, the beam is then rapidly translated back to the start-stop target to minimize the amount of time that the high power beam comes in contact with the slit disk assembly. The data obtained by the system is then transferred into a computer system, where a computer tomography algorithm is used to reconstruct the power density distribution of the beam.
    • 描述了用于表征功率水平为10kW及以上的高功率电子束的系统。 该系统由具有多个径向狭缝的狭缝盘组件,位于狭缝盘组件下方的相同数量的径向狭缝的导电盘,位于导电盘下方的法拉第杯组件和位于 靠近狭缝盘组件。 为了在使用过程中保持系统过热,将散热器放置在紧邻上述部件的位置,并且使用例如水的主动冷却系统可以集成到散热器中。 在使用期间,高功率光束最初被引导到起停目标上,并且在达到其全部功率之后,围绕狭缝盘组件平移,其中光束进入径向狭缝和导电盘径向狭缝,并在法拉第杯 部件。 触发探针组件也可以集成到系统中,以帮助确定重建过程中光束的正确定向。 在通过每个狭缝之后,光束然后迅速地转回到启动 - 停止目标,以最小化高功率光束与狭缝盘组件接触的时间量。 然后将由系统获得的数据传送到计算机系统中,其中使用计算机断层摄影算法来重建光束的功率密度分布。