ELLIOTT MCCRORY, THOMAS KROC, ALFRED MORETTI, MILORAD POPOVIC (FNAL)
We have reported previously on the sparking rate of the high-gradient accelerating cavities in the Fermilab Linac [1]. These automated measurements have been tabulated since the first RF operation in 1993 and the results from seven years of operation are reported here. Over the years, we have changed some of the operating conditions of the RF, most notably, increasing the RF pulse length. The sparking rate of some of the cavities is continuing to decline.
[1] Kroc, et al., Proceedings of LINAC96, pp 338-340.
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