D. P. Pritzkau, R. H. Siemann (SLAC)
Results are reported from an experiment on RF pulsed heating of copper at SLAC. RF pulsed heating is a process in which a metal surface is heated by a pulsed RF source of power. Damage in the form of cracks may be induced on the surface after the application of many pulses of RF. The experiment consists of two circularly cylindrical cavities operated in the TE011 mode at a resonant frequency of 11.424 GHz. These cavities are connected by a magic tee and driven by a 50 MW X-band klystron. Each cavity received 8.5 MW, 1.2 microsec pulses at 60 Hz corresponding to a calculated temperature rise of 120 K on the copper surface. After 5.5 x 10^7 pulses, the experiment was stopped and the copper surfaces were examined. Damage is present on the area of the surface where the maximum heating occurred.
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