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Inhomogeneous broadening effects in high-gain free electron laser operation: A simple parametrization

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Il Nuovo Cimento D

Summary

In this paper we present a simple parametrization of the effects of gain degradation induced in high-current FELs by the inhomogeneous broadenings due to the energy spread and emittances of the electron beam. The parametrization is based on a fitting procedure of the numerical data. The accuracy of the fit is better than 1%.

Riassunto

In questo lavoro si analizzano gli effetti di allargamento inomogeneo in FEL operanti nel regime di alto guadagno. Si presenta una semplice formula che permette di parametrizzare il guadagno in funzione dei parametri inomogenei dovuti allo spread di energia ed alle emittanze. La parametrizzazione è basata su una procedura di interpolazione dei dati numerici. L'accuratezza della interpolazione è migliore dell'1%.

Резюме

В этой работе анлизируется влияние эффектов неоднородного уширения на действие лазера на свободных электронах с высоким усилением. Предлагается простая формула для параметризации коэффициента усиления в зависимости от параметров неоднородного уширения, связанных с разбросом энергии и эмиттанса электронного пучка. Параметризация основана на интерполяции численных данных. Точность интерполяции оказывается лучше 1%.

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References

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Author notes

  1. R. Caloi

    Present address: Dipartimento di Fisica Ia Università di Roma «La Sapienza», P.le Aldo Moro 5, Roma

Authors and Affiliations

  1. ENEA, Dipartimento TIB, U.S. Fisica Applicata, CRE Frascati, C.P. 65-00044, Frascati(Roma), Italia

    G. Dattoli, A. Renieri, A. Torre & R. Caloi

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  1. G. Dattoli
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  2. A. Renieri
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  3. A. Torre
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  4. R. Caloi
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Dattoli, G., Renieri, A., Torre, A. et al. Inhomogeneous broadening effects in high-gain free electron laser operation: A simple parametrization. Il Nuovo Cimento D 11, 393–404 (1989). https://doi.org/10.1007/BF02450989

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  • DOI: https://doi.org/10.1007/BF02450989

PACS 85.60

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