Design and High-Power Test of an Internal Coupler to HE11 Mode in Corrugated Waveguide for High-Power Gyrotrons
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-02-28 |
| Journal | IEEE Transactions on Electron Devices |
| Authors | Jeffrey Neilson, R. Lawrence Ives, Samuel Schaub, W. C. Guss, Guy Rosenzweig |
| Institutions | Fusion (United States), Calabazas Creek Research (United States) |
| Citations | 18 |
Abstract
Section titled āAbstractāGyrotrons produce power in high-order, transverse electric modes that are typically converted to a Gaussian beam inside the tube. In fusion plasma heating applications, the power is transmitted through a diamond window to an external mirror optical unit where it is coupled into an HE<sub>11</sub> mode in corrugated waveguide. A new coupler is described that couples the cavity RF power directly into corrugated waveguide inside the gyrotron. A high power gyrotron with the improved coupler was tested using 1-MW, 3-Ī¼s pulses and demonstrated equivalent power and efficiency as a traditional coupler with HE<sub>11</sub> mode output in corrugated waveguide. In addition, higher HE<sub>11</sub> mode purity was achieved at the gyrotron output.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2004 - Surf3d and LOT: Computer codes for design and analysis of high-performance QO launchers in gyrotrons
- 2009 - Novel numerical method for the analysis and synthesis of the fields in highly oversized waveguide mode converters [Crossref]