Vol. 42

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2012-06-27

Multimode Behavior of a 42ghz, 200kw Gyrotron

By Ashutosh Singh, B. Ravi Chandra, and Pradip Kumar Jain
Progress In Electromagnetics Research B, Vol. 42, 75-91, 2012
doi:10.2528/PIERB12050905

Abstract

The multimode beam wave interaction behavior in a tapered, cylindrical cavity RF interaction structure of a 42 GHz gyrotron operating in the TE03 mode has been investigated through nonlinear analysis and PIC simulation. A technique for producing the annular gyrating electron beam in PIC simulation code CST Particle Studio has been described. An energy transfer phenomenon from electron beam to RF has been demonstrated. The performance of cavity has been monitored to ensure the device operation in the desired mode and frequency. In the PIC simulation, the effect of beam velocity spread on the power output has been discussed. Using multimode behaviour, the effect of presence of nearby modes on the cavity performance has been observed. The simulation results have been compared with the results obtained from self-consistent single-mode analysis and time-dependent multimode analysis. It has been found that output power is well above the desired 200 kW level for the designed 42 GHz gyrotron operating in TE03 mode.

Citation


Ashutosh Singh, B. Ravi Chandra, and Pradip Kumar Jain, "Multimode Behavior of a 42ghz, 200kw Gyrotron," Progress In Electromagnetics Research B, Vol. 42, 75-91, 2012.
doi:10.2528/PIERB12050905
http://jpier.org/PIERB/pier.php?paper=12050905

References


    1. Edgcombe, C. J. (ed.), "Gyrotron Oscillators: Their Principles and Practice," Taylor and Francis Ltd., London, 1993.

    2. Kartikeyan, M. V., E. Borie, and M. K. Thumm, "Gyrotrons High-Power Microwave and Millimeter Wave Technology," Springer, Germany, 2004.

    3. Nusinovich, G. S., "Introduction to the Physics of Gyrotrons," Johns Hopkins University Press, Baltimore, 2004.

    4. Thumm, M. K., "State-of-the-art of high power gyro-devices and free electron masers update 2009 ,", Scientific Reports FZKA 7467, Forschungszentrum Karlsruhe, Karlsruhe, Germany, 2010.

    5. Eichmeier, J. A. and M. K. Thumm, "Vacuum Electronics - Components and Devices,", Springer, New York, 2008.

    6. Kreischer, K. E., R. J. Temkin, H. R. Fetterman, and W. J. Mulligan, "Multimode oscillation and mode competition in high-frequency gyrotrons," IEEE Trans. Microwave Theory Tech., Vol. 32, 481-490, 1984.
    doi:10.1109/TMTT.1984.1132711

    7. Nusinovich, G. S., "Review of the theory of mode interaction in gyrodevices," IEEE Trans. Plasma Science, Vol. 27, No. 2, 313-326, Jun. 1999.
    doi:10.1109/27.772257

    8. Chu, K. R., "Theory of electron cyclotron maser interaction in a cavity at the harmonic frequencies," Phys. Fluids, Vol. 21, 2354-2364, 1978.
    doi:10.1063/1.862188

    9. Liu, P. K. and E. Borie, "Mode competition and self-consistent simulation of a second harmonic gyrotron oscillator," Int. J. Infrared Millimeter Waves, Vol. 21, No. 6, 855-882, 2000.
    doi:10.1023/A:1026437315884

    10. Kreischer, K. E. and R. J. Temkin, "Linear theory of an electron cyclotron maser operating at the fundamental," Int. J. Infrared Millimeter Waves, Vol. 1, No. 2, 195-223, Jun. 1980.
    doi:10.1007/BF01007116

    11. Danly, B. G. and R. J. Temkin, "Generalized nonlinear harmonic gyrotron theory," Phys. Fluids, Vol. 29, 561-567, 1986.
    doi:10.1063/1.865446

    12. Kartikeyan, M. V., A. Kumar, S. Kamakshi, P. K. Jain, S. Illy, E. Borie, B. Piosczyk, and M. K. Thumm, "RF behavior of a 200-kW CW gyrotron," IEEE Trans. Plasma Science, Vol. 36, No. 3, 631-636, Jun. 2008.
    doi:10.1109/TPS.2008.923762

    13. Fliflet, A. W., M. E. Read, and K. R. Chu, "A self-consistent field theory for gyrotron oscillators: Application to a low Q gyromonotron," Int. J. Electron., Vol. 53, No. 6, 505-521, Dec. 1982.
    doi:10.1080/00207218208901545

    14. Fliflet, A. W., R. C. Lee, S. H. Gold, W. M. Manheimer, and E. Ott, "Time-dependent multimode simulation of gyrotron oscillators," Phys. Rev. A, Vol. 43, No. 11, 6166-6176, Jun. 1991.
    doi:10.1103/PhysRevA.43.6166

    15. Reddy, D. M., A. K. Sinha, and P. K. Jain, "Eigenmode and beam-wave interaction simulation for small orbit gyrotron using MAGIC," International Conference on Microwaves, Antenna, Propagation & Remote Sensing, ICMARS, Jodhpur, Feb. 2008.

    16. Wu, H., R. L. Liou, and A. H. McCurdy, "PIC code simulation of pulsed radiation in a tapered closed-cavity gyrotron," IEEE Trans. Plasma Science, Vol. 24, No. 3, 606-612, Jun. 1996.
    doi:10.1109/27.532943

    17. Reddy, S. U. M., V. B. Naidu, S. K. Datta, P. K. Jain, and L. Kumar, "PIC simulation of a gyrotron-traveling-wave tube amplifier ," IEEE International Vacuum Electronics Conference (IVEC), 319-320, 2010.
    doi:10.1109/IVELEC.2010.5503420

    18. CST-Particle Studio, , User's Manual, Darmstadt, Germany, 2011.

    19. , , MAGIC User's Manual: 2007 Version of Magic 3D, ATK Mission Research, Washington, 2007.