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Title: Novel linear analysis for a gyrotron oscillator based on a spectral approach

Abstract

With the focus of gaining a better physical insight into linear regimes in gyrotrons, a new linear model was developed. This approach is based on a spectral approach for solving the self-consistent system of equations describing the wave-particle interaction in the cavity of a gyrotron oscillator. Taking into account the wall-losses self-consistently and including the main system inhomogeneities in the cavity geometry and in the magnetic field, the model is appropriate to consider real system parameters. The prime advantage of the spectral approach, compared with a time-dependent approach, is the possibility to describe all of the stable and unstable modes, respectively, with negative and positive growth rates. This permits to reveal the existence of a new set of eigenmodes, in addition to the usual eigenmodes issued from cold-cavity modes. The proposed model can be used for studying other instabilities such as, for instance, backward waves potentially excited in gyrotron beam tunnels.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [2]
  1. Ecole Polytechnique Federale Lausanne (Switzlerland)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
OSTI Identifier:
1557632
Grant/Contract Number:  
FC02-93ER54186
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 4; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Genoud, J., Tran, T. M., Alberti, S., Braunmueller, F., Hogge, J. -Ph., Tran, M. Q., Guss, W. C., and Temkin, R. J. Novel linear analysis for a gyrotron oscillator based on a spectral approach. United States: N. p., 2016. Web. doi:10.1063/1.4945611.
Genoud, J., Tran, T. M., Alberti, S., Braunmueller, F., Hogge, J. -Ph., Tran, M. Q., Guss, W. C., & Temkin, R. J. Novel linear analysis for a gyrotron oscillator based on a spectral approach. United States. doi:10.1063/1.4945611.
Genoud, J., Tran, T. M., Alberti, S., Braunmueller, F., Hogge, J. -Ph., Tran, M. Q., Guss, W. C., and Temkin, R. J. Thu . "Novel linear analysis for a gyrotron oscillator based on a spectral approach". United States. doi:10.1063/1.4945611. https://www.osti.gov/servlets/purl/1557632.
@article{osti_1557632,
title = {Novel linear analysis for a gyrotron oscillator based on a spectral approach},
author = {Genoud, J. and Tran, T. M. and Alberti, S. and Braunmueller, F. and Hogge, J. -Ph. and Tran, M. Q. and Guss, W. C. and Temkin, R. J.},
abstractNote = {With the focus of gaining a better physical insight into linear regimes in gyrotrons, a new linear model was developed. This approach is based on a spectral approach for solving the self-consistent system of equations describing the wave-particle interaction in the cavity of a gyrotron oscillator. Taking into account the wall-losses self-consistently and including the main system inhomogeneities in the cavity geometry and in the magnetic field, the model is appropriate to consider real system parameters. The prime advantage of the spectral approach, compared with a time-dependent approach, is the possibility to describe all of the stable and unstable modes, respectively, with negative and positive growth rates. This permits to reveal the existence of a new set of eigenmodes, in addition to the usual eigenmodes issued from cold-cavity modes. The proposed model can be used for studying other instabilities such as, for instance, backward waves potentially excited in gyrotron beam tunnels.},
doi = {10.1063/1.4945611},
journal = {Physics of Plasmas},
number = 4,
volume = 23,
place = {United States},
year = {2016},
month = {4}
}

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Works referenced in this record:

A self-consistent field theory for gyrotron oscillators: application to a low Q gyromonotron
journal, December 1982

  • Fliflet, A. W.; Read, M. E.; Chu, K. R.
  • International Journal of Electronics, Vol. 53, Issue 6
  • DOI: 10.1080/00207218208901545

The electron cyclotron maser
journal, May 2004


Comments on the linear theory of the gyrotron
journal, April 1988

  • Borie, E.; Jodicke, B.
  • IEEE Transactions on Plasma Science, Vol. 16, Issue 2
  • DOI: 10.1109/27.3802

Self-Excitation of a Tapered Gyrotron Oscillator
journal, June 2010

  • Nusinovich, Gregory S.; Sinitsyn, Oleksandr V.
  • IEEE Transactions on Plasma Science, Vol. 38, Issue 6
  • DOI: 10.1109/TPS.2010.2046638

Moment-based, self-consistent linear analysis of gyrotron oscillators
journal, April 2014

  • Braunmueller, F.; Tran, T. M.; Alberti, S.
  • Physics of Plasmas, Vol. 21, Issue 4
  • DOI: 10.1063/1.4870082

Linear theory of a gyrotron with weakly tapered external magnetic field
journal, January 1988


Startup Methods for Single-Mode Gyrotron Operation
journal, August 1995


Start currents in an overmoded gyrotron
journal, November 2003

  • Yeddulla, M.; Nusinovich, G. S.; Antonsen, T. M.
  • Physics of Plasmas, Vol. 10, Issue 11
  • DOI: 10.1063/1.1618777

Calculations of Starting Currents and Frequencies in Frequency-Tunable Gyrotrons
journal, December 2012

  • Dumbrajs, Olgierd; Idehara, Toshitaka; Saito, Teruo
  • Japanese Journal of Applied Physics, Vol. 51, Issue 12R
  • DOI: 10.7567/JJAP.51.126601

Competition between modes with different axial structures in gyrotrons
journal, September 2014

  • Khutoryan, Eduard M.; Nusinovich, Gregory S.; Sinitsyn, Oleksandr V.
  • Physics of Plasmas, Vol. 21, Issue 9
  • DOI: 10.1063/1.4896709

Start-Up Scenario in Gyrotrons with a Nonstationary Microwave-Field Structure
journal, March 2006


Gyrotron parasitic-effects studies using the time-dependent self-consistent monomode code TWANG
conference, October 2011

  • Alberti, S.; Tran, T. M.; Avramides, K. A.
  • 2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2011), 2011 International Conference on Infrared, Millimeter, and Terahertz Waves
  • DOI: 10.1109/irmmw-THz.2011.6105097

TWANG-PIC, a novel gyro-averaged one-dimensional particle-in-cell code for interpretation of gyrotron experiments
journal, June 2015

  • Braunmueller, F.; Tran, T. M.; Vuillemin, Q.
  • Physics of Plasmas, Vol. 22, Issue 6
  • DOI: 10.1063/1.4923299

Generalized Radiation Boundary Conditions in Gyrotron Oscillator Modeling
journal, September 2015

  • Alberti, S.; Tran, T. M.; Brunner, S.
  • Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 36, Issue 11
  • DOI: 10.1007/s10762-015-0204-2

Experimental study from linear to chaotic regimes on a terahertz-frequency gyrotron oscillator
journal, December 2012

  • Alberti, S.; Ansermet, J. -Ph.; Avramides, K. A.
  • Physics of Plasmas, Vol. 19, Issue 12
  • DOI: 10.1063/1.4769033

Nanosecond Pulses in a THz Gyrotron Oscillator Operating in a Mode-Locked Self-Consistent Q -Switch Regime
journal, November 2013


Experimental Study of the Start-Up Scenario of a 1.5-MW, 110-GHz Gyrotron
journal, April 2013

  • Tax, David S.; Sinitsyn, Oleksandr V.; Guss, William C.
  • IEEE Transactions on Plasma Science, Vol. 41, Issue 4
  • DOI: 10.1109/TPS.2013.2247635

Excitation of Backward Waves in Beam Tunnels of High-Power Gyrotrons
journal, June 2010

  • Jiao Yu, ; Antonsen, Thomas M.; Nusinovich, Gregory S.
  • IEEE Transactions on Plasma Science, Vol. 38, Issue 6
  • DOI: 10.1109/TPS.2010.2043960

Comparative study of dielectric loaded structures for suppressing gyro-BWO instabilities in gyrotron beam-ducts (BD) using HFSS
conference, October 2011

  • Thorndahl, L.; Alberti, S.; Hogge, J. -P.
  • 2011 36th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2011), 2011 International Conference on Infrared, Millimeter, and Terahertz Waves
  • DOI: 10.1109/irmmw-THz.2011.6104927

Experimental Investigations and Analysis of Parasitic RF Oscillations in High-Power Gyrotrons
journal, June 2010

  • Gantenbein, Gerd; Dammertz, Günter; Flamm, Jens
  • IEEE Transactions on Plasma Science, Vol. 38, Issue 6
  • DOI: 10.1109/TPS.2010.2041366

    Works referencing / citing this record:

    Parasitic Oscillations in Smooth-Wall Circular Symmetric Gyrotron Beam Ducts
    journal, October 2018

    • Genoud, J.; Alberti, S.; Tran, T. M.
    • Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 40, Issue 2
    • DOI: 10.1007/s10762-018-0548-5

    Modeling of parasitic oscillations in smooth-wall circular symmetric dielectric-loaded gyrotron beam ducts
    journal, December 2019

    • Genoud, J.; Alberti, S.; Hogge, J. -Ph.
    • Physics of Plasmas, Vol. 26, Issue 12
    • DOI: 10.1063/1.5130637