Beam alignment of ECH transmission line using moment method

H. Idei, T. Shimozuma, T. Notake, S. Ito, S. Kubo, M. A. Shapiro, J. P. Anderson, R. J. Temkin, K. Ohkubo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In the 84 GHz CPI gyrotron, with a single-stage depressed collector in the TE15,3 oscillating mode, a geometric optics Vlasov converter was installed in the tube to convert the mode into a Gaussian beam. The low power test stand where intensity and phase patterns can be measured was prepared at the National Institute for Fusion Science (NIFS). The sizes and tilt angles of quasi-optical beams are deduced from the measured intensity and phase profiles using the moment method. The Gaussian-like beam is coupled into the HE11 corrugated waveguide with tilt angle adjustment. The beam radiated from the waveguide after coupling is analyzed with the moment method. The Gaussian content in the radiated beam is also discussed.

Original languageEnglish
Title of host publicationConference Digest - 27th International Conference on Infrared and Millimeter Waves, IRMMW 2002
EditorsRichard J. Temkin
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages151-152
Number of pages2
ISBN (Electronic)0780374231, 9780780374232
DOIs
Publication statusPublished - Jan 1 2002
Externally publishedYes
Event27th International Conference on Infrared and Millimeter Waves, IRMMW 2002 - San Diego, United States
Duration: Sep 22 2002Sep 26 2002

Publication series

NameConference Digest - 27th International Conference on Infrared and Millimeter Waves, IRMMW 2002

Other

Other27th International Conference on Infrared and Millimeter Waves, IRMMW 2002
Country/TerritoryUnited States
CitySan Diego
Period9/22/029/26/02

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Instrumentation
  • Radiation

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