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Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping

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Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping. / Marks, H. S.; Lurie, Yu; Dyunin, E.; Gover, A.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 11, 01.11.2017, p. 4218-4224.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Marks, HS, Lurie, Y, Dyunin, E & Gover, A 2017, 'Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping', IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 11, pp. 4218-4224. https://doi.org/10.1109/TMTT.2017.2699959

APA

Marks, H. S., Lurie, Y., Dyunin, E., & Gover, A. (2017). Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping. IEEE Transactions on Microwave Theory and Techniques, 65(11), 4218-4224. https://doi.org/10.1109/TMTT.2017.2699959

Vancouver

Author

Marks, H. S. ; Lurie, Yu ; Dyunin, E. ; Gover, A. / Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping. In: IEEE Transactions on Microwave Theory and Techniques. 2017 ; Vol. 65, No. 11. pp. 4218-4224.

Bibtex

@article{fd42c95d1b07492da3e1079960db7aa5,
title = "Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping",
abstract = "Free-electron lasers are used to generate laser radiation using an accelerated electron beam. In this paper, an electrostatic accelerator was used with a thermionic cathode. Lasing pulses of the order of tens of microseconds were generated by passing the current pulses through a wiggler and resonator combination. The change in lasing power as a result of postsaturation variation of the energy of the electron beam during the lasing period is presented in this paper in the form of experimental measurements and simulations. In the experiments, the initial electron beam energy was similar to 1.4 MeV and the current was 1.13 A, whilst the lasing frequency was always close to 102 GHz. It is shown that postsaturation, positively ramping the beam energy increases the radiation extraction efficiency by around 50%. Whilst a falling beam energy results in a reduction in extraction efficiency.",
keywords = "Energy extraction, free-electron laser (FEL) oscillator, radiation power optimization, MASER, ENHANCEMENT, OPERATION, LOCKING",
author = "Marks, {H. S.} and Yu Lurie and E. Dyunin and A. Gover",
year = "2017",
month = nov,
day = "1",
doi = "10.1109/TMTT.2017.2699959",
language = "English",
volume = "65",
pages = "4218--4224",
journal = "IEEE Transactions on Microwave Theory and Techniques",
issn = "0018-9480",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "11",

}

RIS

TY - JOUR

T1 - Enhancing Electron Beam Radiative Energy Extraction Efficiency in Free-Electron Laser Oscillators Through Beam Energy Ramping

AU - Marks, H. S.

AU - Lurie, Yu

AU - Dyunin, E.

AU - Gover, A.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - Free-electron lasers are used to generate laser radiation using an accelerated electron beam. In this paper, an electrostatic accelerator was used with a thermionic cathode. Lasing pulses of the order of tens of microseconds were generated by passing the current pulses through a wiggler and resonator combination. The change in lasing power as a result of postsaturation variation of the energy of the electron beam during the lasing period is presented in this paper in the form of experimental measurements and simulations. In the experiments, the initial electron beam energy was similar to 1.4 MeV and the current was 1.13 A, whilst the lasing frequency was always close to 102 GHz. It is shown that postsaturation, positively ramping the beam energy increases the radiation extraction efficiency by around 50%. Whilst a falling beam energy results in a reduction in extraction efficiency.

AB - Free-electron lasers are used to generate laser radiation using an accelerated electron beam. In this paper, an electrostatic accelerator was used with a thermionic cathode. Lasing pulses of the order of tens of microseconds were generated by passing the current pulses through a wiggler and resonator combination. The change in lasing power as a result of postsaturation variation of the energy of the electron beam during the lasing period is presented in this paper in the form of experimental measurements and simulations. In the experiments, the initial electron beam energy was similar to 1.4 MeV and the current was 1.13 A, whilst the lasing frequency was always close to 102 GHz. It is shown that postsaturation, positively ramping the beam energy increases the radiation extraction efficiency by around 50%. Whilst a falling beam energy results in a reduction in extraction efficiency.

KW - Energy extraction

KW - free-electron laser (FEL) oscillator

KW - radiation power optimization

KW - MASER

KW - ENHANCEMENT

KW - OPERATION

KW - LOCKING

U2 - 10.1109/TMTT.2017.2699959

DO - 10.1109/TMTT.2017.2699959

M3 - Journal article

VL - 65

SP - 4218

EP - 4224

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

IS - 11

ER -