Design methodology and simulation study of a FEL amplifier

  • Authors

    • Ram Gopal
    • Pradip Kumar Jain
    https://doi.org/10.14419/ijet.v7i4.21559

  • In this paper, the operating behavior and optimization in the TM01 mode of an free electron laser amplifier (FELA) has been discussed using the eigen mode analysis and the simulation techniques and their results has been also analyzed with 3-D particle-in-cell (PIC) codes “CST particle studioâ€. To understand the performance analysis and sensitivity of the FEL amplifier using an intense relativistic electron beams (REBs) on various parameter effects such as power, gain, efficiency, beam current, beam voltage and operating frequencies has been explained. In the modeling of an FEL amplifier, the pattern of the magnetic and electric field in TM01 mode has been showed and performed their RF simulation results in the absent case of electron beams i.e., the cold simulation. The reading of the measurement values has been showed for the large radiation growth rate 2dB/cm approximately with 231 GHz instantaneous band width. The good agreement of the simulation results has been found as reported experimental values with predicted theory of operation in the Collective Raman Regime. Additionally, the result to extraction of the kinetic energy from the electron beams to beat-wave has been observed the power and efficiency largely increases experimentally with the linear tapering of the strong axial magnetic field that produces 20% experimental efficiency in the FEL amplifier.

  • References

    1. [1] Gold SH, Hardesty DL, Kinkead AK, Barnett LR & Granatstein VL, “High gain 35-GHz free electron laser amplifier experimentâ€, Physical review letters, Vol. 52, No. 14, (1984), p. 1218-1221. https://doi.org/10.1103/PhysRevLett.52.1218.

      [2] Gold SH, Black WM, Freund HP, Granatstein VL & Kinkead AK, “Radiation growth in a millimetre-wave free electron laser operating in the collective Regimeâ€, Physics of Fluids, Vol. 27, No. 3, (1984), p. 746-754. https://doi.org/10.1063/1.864650.

      [3] Gold SH, Freund HP & Bowie, “Free electron laser with tapered axial magnetic fieldâ€, The United States of America as represented by the Secretary of the Navy, Washington, DC, (1987), Patent Number: 4,644,548.

      [4] Pant KK & Tripathi VK, “Free Electron Laser Operation in the Whistler Modeâ€, IEEE Transactions on plasma science, Vol. 22, No. 3, (1994). https://doi.org/10.1109/27.297869.

      [5] Gopal R & Jain PK, “Tapering effect of an axial magnetic field on whistler-pumped FEL Amplifierâ€, IRACTS-Engineering Science and Technology: An International journal (ESTIJ), Vol. 8, No. 2, (2018).

      [6] Gopal R & Jain PK, “Effect of axial magnetic field tapering on whistler-pumped FEL amplifier in collective Raman regime operationâ€, International Journal of Engineering & Technology, Vol. 7, No. 4, (2018), pp.2044-2050.

      [7] Motz H, “Applications of the Radiation from Fast Electron Beams,†Journal of Applied Physics, 1951, vol. 22, no. 5.

      [8] Sharma A & Tripathi VK, “Kinetic theory of a whistler-pumped free electron laser,†Phys. of Fluids, Vol. B 5, No.1, (1993).

      [9] Sharma A & Tripathi VK, “A plasma filled gyrotron pumped free electron laserâ€, Phys. Plasmas, Vol. 3, (1996), pp. 3116. https://doi.org/10.1063/1.871658.

      [10] Marshall TC, Free Electron Lasers, MacMillan, New York, (1985).

      [11] Liu CS & Tripathi VK, Interaction of electromagnetic waves with electron beams and plasmas, World Scientific, (1994). https://doi.org/10.1142/2189.

      [12] Roberson CW and Sprangle P, Physics Fluids, Vol. B1, No. 3, (1989).

      [13] Dattoli G and Renieri AT, “Lectures on the free electron laser theory and related topics,†World scientific publishing Co. Pte. Ltd, (1993).

      [14] Workie DW, “Basic Physical Processes and Principles of Free Electron Lasers,†Lecture notes- Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, 2001.

      [15] Nguyen KT, et al, “Modeling of gyroklystrons with MAGY,†IEEE Trans. Plasma Sci., Vol. 28, No. 3, (200), pp. 867-886.

      [16] Petillo J, Mankofsky A, Krueger W, Kostas C, Mondelli A, and Drobot A, “Applications of the ARGUS code in accelerator physics,†in Proc. AIP Conf. Comput. Accel. Phys., (1993), pp. 303-312.

      [17] Di J, Zhu DJ, and Liu SG, “Electromagnetic field algorithms of CHIPIC code,†J. Univ. Electron. Sci. Technol. China, vol. 4, no. 4, (2005), pp. 485-488.

      [18] Warren G, Ludeking L, Nguyen KT, Smithe D, and Goplen B, “Advances/applications of MAGIC and SOS,†in Proc. AIP. Conf. Comput. Accel. Phys., (1993), pp. 313-322.

      [19] MAGIC User’s Manual 2007, ATK Mission Systems, Newington, Virginia, (2007).

      [20] User’s Manual, CST-Particle Studio, Darmstadt, Germany, (2013).

      [21] User’s Manual, CST-Particle Studio, Darmstadt, Germany, (2014).

      [22] Kartikeyan MV, Borie E, and Thumn M, Gyrotrons: High-Power Microwave and Millimeter Wave Technology. Berlin, Germany: Springer, (2004).

      [23] Nusinovich GS, Introduction to the Physics of Gyrotrons. Baltimore, MD, USA: The Johns Hopkins Univ. Press, (2004).

      [24] Swati MV, Chauhan MS, and Jain PK, “Design Methodology and Beam-Wave Interaction Study of a Second-Harmonic D-Band Gyroklystron Amplifierâ€, IEEE Transactions on plasma science, Vol. 44, No. 11, (2016), p. 2845.

      Mahto M, and Jain PK, “Design and Simulation Study of the HPM Oscillator-Reltronâ€,

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    Gopal, R., & Jain, P. K. (2018). Design methodology and simulation study of a FEL amplifier. International Journal of Engineering & Technology, 7(4), 3175-3181. https://doi.org/10.14419/ijet.v7i4.21559