Cathode-follower RF system for proton synchrotron and compressor rings

A model RF system with a cathode-follower was tested in its two operational modes without beam. One was for a synchrotron, where the frequency was modulated at 40 Hz; the other was for a compressor ring, where a barrier bucket was generated. Contrary to a simple theory on the inherent instability of the cathode-follower, the RF generation was quite stable in a wide frequency range.