High Power Testing of a 17 GHz Photocathode RF Gun
نویسندگان
چکیده
We report experimental high power test results on a high gradient 17 G H z RF photocathode gun. The 1 2 cell, π -mode, copper cavity was tested with 5-10 MW , 100 ns, 17.145 G H z pulses from a 24 MW Haimson Research Corp. klystron. A maximum surface electric field of 250 MeV/m was achieved corresponding to an on-axis gradient of 150 MeV/m. The gradient was verified by a preliminary electron beam energy measurement. Conditioning with ∼ 105 shots resulted in a low field emission current, less than 6 m A. Future research will concentrate on measurements of the quality of electron beams produced by ps laser photoemission.
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