Long-Pulse Radio Frequency Separator Test Facility

This paper discusses a long-pulse, line-type modulator facility which has been built to operate either one or two SLAC-type klystrons for long-pulse RF particle separator studies. The modulator is capable of driving two klystrons to a peak beam power of 80 MW, 250 kW average, for 50??s pulses or one klystron to a peak beam power of 40 MW, 125 kW average. The modulator has two 25 ??s pulse-forming networks which can be operated individually to drive a single klystron or in parallel to drive two klystrons from a common pulse transformer. In addition, test results for long-pulse operation of the SLAC-type klystron are presented.