Output System of A 220-/247.5-/275-GHz, 1.0-MW, Triple-Frequency Regime Gyrotron
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-03-05 |
| Journal | IEEE Transactions on Electron Devices |
| Authors | Gaurav Singh Baghel, M. V. Kartikeyan |
| Institutions | Indian Institute of Technology Roorkee |
| Citations | 2 |
Abstract
Section titled āAbstractāIn this paper, the design studies of an output system [comprising a nonlinear taper, a quasi-optical launcher (QOL), and an RF window] for 220-/247.5-/275-GHz, triple-frequency gyrotron are presented. The precisely chosen mode-triplet is TE39,14/TE43,16/TE47,18 to support adequate power transfer at their corresponding frequencies of operation. The nonlinear uptaper is optimized using our in-house code Gyrotron Design Suite version 4.0 (GDSv4.0 2016) [7] in order to reduce the mode conversion for all the frequencies. A common dimpled wall QOL is designed and simulated using commercially available launcher optimization tool. A chemical vapor-deposited-diamond RF window is recommended with a decent transmission bandwidth for all the operating frequencies. The knowledge of correct phase of the Gaussian-like beam coming out of the RF window of any high-power gyrotron is most important for scheming a correct matching optic unit. Hence, the theoretical phase of the beams at a window plane is retrieved using an iterative phase retrieval algorithm.
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
- 2013 - High-efficiency quasi-optical mode converter for a 1-MW TE32,9-mode gyrotron [Crossref]
- 2010 - Design studies towards a 4 MW 170 GHz coaxial-cavity gyrotron
- 2009 - Irradiance moments: their propagation and use for unique retrieval of phase [Crossref]