Evaluation of optical klystron free-electron laser gain degradation due to electron beam quality |
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| Institution: | Hefei National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, PR China |
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| Abstract: | A simple and practical method to calculate the small signal gain with an initial electron beam energy spread or angular spread is presented and used to analyse the optical klystron FEL, an asymptotic formula is given, contour maps are used to show the results. |
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