Electron gun for a multiple beam klystron with magnetic compression of the electron beams

Ives, R. Lawrence; Tran, Hien T; Bui, Thuc; Attarian, Adam; Tallis, William; David, John; Forstall, Virginia; Andujar, Cynthia; Blach, Noah T; Brown, David B; Gadson, Sean E; Kiley, Erin M; Read, Michael

Title: Electron gun for a multiple beam klystron with magnetic compression of the electron beams

Patent · Tue Oct 01 00:00:00 EDT 2013

OSTI ID:1107575

Ives, R. Lawrence; Tran, Hien T; Bui, Thuc; Attarian, Adam; Tallis, William; David, John; Forstall, Virginia; Andujar, Cynthia; Blach, Noah T; Brown, David B; Gadson, Sean E; Kiley, Erin M; Read, Michael

A multi-beam electron gun provides a plurality N of cathode assemblies comprising a cathode, anode, and focus electrode, each cathode assembly having a local cathode axis and also a central cathode point defined by the intersection of the local cathode axis with the emitting surface of the cathode. Each cathode is arranged with its central point positioned in a plane orthogonal to a device central axis, with each cathode central point an equal distance from the device axis and with an included angle of 360/N between each cathode central point. The local axis of each cathode has a cathode divergence angle with respect to the central axis which is set such that the diverging magnetic field from a solenoidal coil is less than 5 degrees with respect to the projection of the local cathode axis onto a cathode reference plane formed by the device axis and the central cathode point, and the local axis of each cathode is also set such that the angle formed between the cathode reference plane and the local cathode axis results in minimum spiraling in the path of the electron beams in a homogenous magnetic field region of the solenoidal field generator.

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Research Organization:: Calabazas Creek Research, Inc. (San Mateo, CA)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-06ER86267

Assignee:: Calabazas Creek Research, Inc. (San Mateo, CA)

Patent Number(s):: 8,547,006

Application Number:: 12/705,160

OSTI ID:: 1107575

Country of Publication:: United States

Language:: English

References (15)

Trajectory correcting device for electron tubes Mourier, Georges https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5032763 US Patent Document 5,032,763	patent	July 1991
Multibeam electronic tube with magnetic field for correcting beam trajectory Beunas, Armel; Faillon, Georges https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6486605 US Patent Document 6,486,605	patent	November 2002
Multiple-beam klystron Tran, Duc Tien; Faillon, Georges https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4733131 US Patent Document 4,733,131	patent	March 1988
Multiple-beam electron tube with cavity/beam coupling via drift tubes having facing lips Beunas, Armel; Faillon, Georges https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5838107 US Patent Document 5,838,107	patent	November 1998
Method and apparatus for magnetic focusing of off-axis electron beam Cattelino, Mark J.; Friedlander, Fred I. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7005789 US Patent Document 7,005,789	patent	February 2006
Projection television systems having lens tilt compensation member McKechnie, Thomas Stewart https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4672458 US Patent Document 4,672,458	patent	June 1987
Electron gun for multiple beam klystron using magnetic focusing Ives, R. Lawrence; Miram, George V.; Krasnykh, Anatoly https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6768265 US Patent Document 6,768,265	patent	July 2004
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Multibeam klystron Vancil, Bernard K.; Wintucky, Edwin G. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7116051 US Patent Document 7,116,051	patent	October 2006
Klystron amplifier Syratchev, Igor https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7446478 US Patent Document 7,446,478	patent	November 2008
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Cathode ray tube and image correcting method Hosokawa, Hiromu; Okada, Masamichi https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6304034 US Patent Document 6,304,034	patent	October 2001
Electron gun for a multiple beam klystron using magnetic focusing with a magnetic field corrector Ives, R. Lawrence; Miram, George V. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6847168 US Patent Document 6,847,168	patent	January 2005
Multi-beam klystron apparatus Miyake, Setsuo https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7385354 US Patent Document 7,385,354	patent	June 2008
Electron gun for a multiple beam klystron Symons, Robert S. https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5932972 US Patent Document 5,932,972	patent	August 1999

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