RF pulse from 2157A Klystron - 25th of May

In the figure you see the RF pulse (2998.5 MHz) produced by the 2157A Klystron. The modulator (ScandiNova AB) was operated at 165 kV, 4.9 us FWHM and 63 Hz. This is at full power level of 6.3 kW average power.

We have driven the input of the klystron at a low power (estimated at 2.5 W peak power, which is a tenth of the optimal power).

The output level measured by the RF diode detectors corresponds to 2.5 MW peak power. This corresponds to a small signal gain of +60 dB.