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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/8598
Title: RF Behavior of a 220/251.5-GHz, 2-MW, Triangular Corrugated Coaxial Cavity Gyrotron
Authors: Yuvaraj S.
Kartikeyan M.V.
Thumm M.K.
Published in: IEEE Transactions on Electron Devices
Abstract: In this paper, RF behavior studies of a dual regime coaxial cavity gyrotron designed for electron cyclotron resonance heating and current drive of magnetically confined plasmas in the future fusion reactors are presented. Considering all the design constraints, the mode pair is chosen as TE-48,30 and TE-55,34 for operation at 220 and 251.5 GHz, respectively. The interaction circuit is initially designed through the cold cavity design. A triangular corrugated insert offers good mode selection and also reduces the localized heating problem. Single mode computations are carried out to optimize the beam parameters for the maximum efficiency of the chosen mode pair. Time-dependent multimode simulations are carried out to conform the power in the desired mode pair and the possibility of power in the competing modes. Start-up analyses are performed before and after space-charge neutralization with nonuniform magnetic field using nominal electron beam parameters obtained from magnetron injection gun calculations. These studies ensure that the continuous wave operation of a coaxial cavity gyrotron is possible with the output power of ≈2 MW with the chosen mode pair. © 1963-2012 IEEE.
Citation: IEEE Transactions on Electron Devices (2017), 64(10): 4287-4294
URI: https://doi.org/10.1109/TED.2017.2743342
http://repository.iitr.ac.in/handle/123456789/8598
Issue Date: 2017
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: Coaxial cavity gyrotron
dual regime gyrotron
space-charge neutralization
time-dependent mutimode calculation
triangular corrugated insert
ISSN: 189383
Author Scopus IDs: 57190343042
6603631347
7101686861
Author Affiliations: Yuvaraj, S., Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, 247667, India
Kartikeyan, M.V., Department of Electronics and Communication Engineering, IIT Roorkee, Roorkee, 247667, India
Thumm, M.K., Karlsruhe Institute of Technology, Institut fuer Hochleistungsimpuls und Mikrowellentechnik, Karlsruhe, D-76344, Germany
Corresponding Author: Kartikeyan, M.V.; Department of Electronics and Communication Engineering, IIT RoorkeeIndia; email: kartik@ieee.org
Appears in Collections:Journal Publications [ECE]

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