As a precursor to the klystron development, a Gun Collector Test Module (GCTM) was developed and tested with pulsed supply. The measured perveance of the electron gun is in close agreement with the design value. The RF cavity with input coupler and tuning arrangement has been developed (Fig. 1). One intermediate cavity with a tuner has also been fabricated (Fig. 2); both the cavities have been cold tested for desired RF characteristic parameters. A number of drift section sub-assemblies have also been developed.

Fig. 1: Input RF cavity

Fig. 2: Intermediate RF cavity