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Femtosecond Electron Bunches


Experiments to produce and measure femtosecond electron bunches are described. A 2.6 MeV rf-gun with thermiuonic cathode is used at the SUNSHINE (Stanford UNiversity SHort INtense Electron Source) facility in conjunction with an alpha-magnet for bunch compression to produce f-sec electron bunches. Transition radiation generated by these bunches is analyzed in a Michelson interferometer to determine the bunch length. Limitations on achievable bunch length and intensity will be discussed, as well as the technique used to measure such that bunches.

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