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Free-electron lasing in the wake field of an elliptical pill-box cavity

Published online by Cambridge University Press:  13 March 2009

S. H. Kim
S. H. Kim
Affiliation:
Department of Physics, University of Texas at Arlington, P. O. Box 19059, Arlington, Texas 76019-0059, U.S.A.
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Abstract

It is shown using the photon concept that free-electron lasing (or net stimulated bremsstrahlung) is unrelated to the electron phase with respect to the laser wave, while the net acceleration (or net two-photon absorption) in an RF acceleration cavity depends on the electron phase with respect to the RF wave. The gain formula for the free-electron laser using a magnetic wiggler (MFEL) derived using the recently developed quantum-augmented classical theory in which the electron phase is ignored is in excellent agreement with that obtained quantum-mechanically. It is found by means of this theory that if an electric wiggler is added to a MFEL, the synchronization between the transverse velocity and the laser wave, which is required for coherence of the laser light, is not affected, while the laser gain is enhanced owing to the increase in the amplitude of the energy modulation by the electric wiggler. As a configuration of this turbo-MFEL, a two-beam elliptical wake-field cavity is proposed. An electron beam injected in the antiparallel direction along the lasing-beam path in this cavity lases through transverse wiggling by the transverse wake field and energy modulation by the longitudinal wake produced by relativistic drivingbeam bunches. This laser (WFEL) becomes of greater advantage compared with the MFEL as the laser wavelength is made shorter. It is also shown that the amplification of the WFEL is much greater than that of the present MFEL if we can produce a wake field whose longitudinal component has field strength greater than 1 MV m–1.

Type
Research Article
Information
Journal of Plasma Physics , Volume 47 , Issue 2 , April 1992 , pp. 219 - 233
Copyright
Copyright © Cambridge University Press 1992

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References

REFERENCES

Bane, K. L. F, Wilson, P. B. & Weiland, T. 1983 AIP Conf. Proc. 127, 876.Google Scholar
Bohm, D. & Gross, E. P. 1949 a Phys. Rev. 75, 1851.CrossRefGoogle Scholar
Bohm, D. & Gross, E. P. 1949 b Phys. Rev. 75, 1864.CrossRefGoogle Scholar
Brau, C. 1990 Free-Electron Lasers. Academic.Google Scholar
Chen, F. F. 1974 Introduction to Plasma Physics, pp. 219–222. Plenum.Google Scholar
Elias, L. R., Fairbank, M., Madey, J. M. J., Schwettmann, H. A. & Smith, T. I. 1976 Phys. Rev. Lett. 36, 717.CrossRefGoogle Scholar
Figueroa, H., Gai, W., Konecney, R., Norem, J., Ruggiero, A., Schoessow, P. & Simpson, J. 1988 Phys. Rev. Lett. 60, 2144.CrossRefGoogle Scholar
Gai, W., Schoessow, P., Cole, B., Konecny, R., Norem, J., Rozenzweig, J. & Simpson, J. 1988 Phys. Rev. Lett. 61, 2756.CrossRefGoogle Scholar
Hopf, F. A., Meystre, P. & Scully, M. O. 1976 Phys. Rev. Lett. 37, 1215.CrossRefGoogle Scholar
Hopf, F. A., Kuper, T. G., Moore, G. T. & Scully, M. O. 1980 Free-Electron Generators of Coherent Radiation (ed. Jacobs, S. F., Pilloff, H. S., Sargent, M., Scully, M. O. & Spitzer, R.), vol. 7, p. 31. Addison-Wesley.Google Scholar
Kim, S. H. 1984 Phys. Fluids 27, 675.CrossRefGoogle Scholar
Kim, S. H. 1986 J. Plasma Phys. 36, 195, [Corrigendum 41, 577 (1989)].CrossRefGoogle Scholar
Kim, S. H. 1988 J. Plasma Phys. 39, 229.CrossRefGoogle Scholar
Kim, S. H. 1990 Free-Electron and Applications (ed. Prosnitz, D.), SPIE Proc. 1227, p. 66. SPIE—The International Society for Optical Engineering.CrossRefGoogle Scholar
Kim, S. H. 1991 a Nuovo Cim. 106B, 325.CrossRefGoogle Scholar
Kim, S. H. 1991 b Intense Microwave and Particle Beams II (ed. Brandt, H. E.), SPIE vol. 1407, p. 620. SPIE-The International Society for Optical Engineering.CrossRefGoogle Scholar
Kim, S. H. 1991 c Nuovo Cim. B (in press).Google Scholar
Kim, S. H. 1992 a J. Plasma Phys. 47, 197.CrossRefGoogle Scholar
Kim, S. H. 1992 b J. Phys. Soc. Japan 61, 131.Google Scholar
Kim, S. H., Chen, K. W. & Yang, J. S. 1990 J. Appl. Phys. 68, 4942.CrossRefGoogle Scholar
Kroll, N. M. & McMullin, W. A. 1978 Phys. Rev. A 17, 300.CrossRefGoogle Scholar
Landau, L. D. 1946 J. Phys. USSR 10, 25.Google Scholar
Madey, J. M. J. 1971 J. Appl Phys. 42, 1906.CrossRefGoogle Scholar
Nakajima, K., Enomoto, A., Kobayashi, H., Nakanishi, H., Nishida, Y., Ogata, A., Ohsawa, S., Oogoe, T., Shoji, T. & Urano, T. 1990 Nucl. Instr. Meth. A 292, 12.CrossRefGoogle Scholar
Nishikawa, K. 1968 J. Phys. Soc. Japan 24, 916.CrossRefGoogle Scholar
Orzechowski, T. J., Anderson, B. R., Clark, J. C., Fawley, W. M., Paul, A. C., Prosnitz, D., Scharlemann, E. T., Yarema, S. M., Hopkins, D. B., Sessler, A. M. & Wurtele, J. S. 1986 Phys. Rev. Lett. 57, 2172.CrossRefGoogle Scholar
Roberson, C. W. & Sprangle, P. 1989 Phys. Fluids B 1, 4.CrossRefGoogle Scholar
Rozenzweig, J. B., Cline, D. B., Cole, B., Figueroa, H., Gai, W., Konecny, R., Norem, J., Schoessow, P. & Simpson, J. 1989 Phys. Rev. Lett. 61, 98.CrossRefGoogle Scholar
Smith, S. J. & Purcell, E. M. 1953 Phys. Rev. 92, 1069.CrossRefGoogle Scholar
Verdeyen, J. T. 1981 Laser Electronics, p. 18. Prentice-Hall.Google Scholar