Ray Has Appreciable Transverse Electrical Dimension And/or Significant Shape Patents (Class 315/5.29)
  • Patent number: 8975816
    Abstract: A RF generator includes a structure having an input section, an output section, and an opening extending between the input section and the output section, wherein the output section has a first cavity and a second cavity, and wherein the first and second cavities are spaced apart from each other so that they are electromagnetically uncoupled from each other. A method of providing RF energy, includes receiving an electron beam, providing a first RF energy through a first cavity, wherein the first RF energy is generated using the electron beam, and providing a second RF energy through a second cavity, wherein the second RF energy is generated using the electron beam, wherein the first cavity and the second cavity are spaced apart from each other so that they are electromagnetically uncoupled from each other.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: March 10, 2015
    Assignee: Varian Medical Systems, Inc.
    Inventors: Glenn P. Scheitrum, George Caryotakis
  • Patent number: 8872057
    Abstract: An electrode of an inductive output tube (IOT) is provided with channels for guiding cooling fluid. In one aspect of the invention, the channels are in a confronting relationship with a jacket surrounding the electrode and spaced from the electrode so as to define an interior region. Cooling fluid such as oil is circulated in the channels in fluid communication with the interior region, providing an escape mechanism for trapped bubbles in order to prevent localized heating of the electrode. In another aspect of the invention, the channels form multiple intersecting helical patterns of different pitches, with the steeper-pitched channels providing a more direct escape route for the bubbles.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: October 28, 2014
    Assignee: Communications & Power Industries LLC
    Inventors: Paul A. Krzeminski, Gordon R. Lavering
  • Patent number: 7138771
    Abstract: The present invention relates to an apparatus for pre-acceleration of ions and optimized matching of beam parameters used in a heavy ion application comprising a radio frequency quadruple accelerator (RFQ) having two mini-vane pairs supported by a plurality of alternating stems accelerating the ions from about 8 keV/u to about 400 keV/u and an intertank matching section for matching the parameters of the ion beam coming from the radio frequency quadruple accelerator (RFQ) to the parameters required by a subsequent drift tube linear accelerator (DTL).
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: November 21, 2006
    Assignee: Gesellschaft fuer Schwerionenforschung mbH
    Inventors: Alexander Bechthold, Ulrich Ratzinger, Alwin Schempp, Bernhard Schlitt
  • Patent number: 6855942
    Abstract: The present invention relates to an apparatus for pre-acceleration of ions and optimized matching of beam parameters used in a heavy ion application comprising a radio frequency quadruple accelerator (RFQ) having two mini-vane pairs supported by a plurality of alternating stems accelerating the ions from about 8 keV/u to about 400 keV/u and an intertank matching section for matching the parameters of the ion beam coming from the radio frequency quadruple accelerator (RFQ) to the parameters required by a subsequent drift tube linear accelerator (DTL).
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: February 15, 2005
    Assignee: Gesellschaft fuer Schwerionenforschung mbH
    Inventors: Alexander Bechthold, Ulrich Ratzinger, Alwin Schempp, Bernhard Schlitt