Speaker
Description
The RF gridded gun is a key component of the RF power sources chosen for the FCC-ee tristron. It enables the generation of bunched electron beams via the application of an RF voltage across the cathode-grid gap. The tristron allows a compact tube architecture and provides high RF power production efficiency. The emitted, grid intercepted, and transmitted beam currents are governed by the applied RF grid voltage and DC cathode voltage, providing additional degrees of freedom for controlling the bunch formation. For continuous wave tristron operation at an RF power level of 0.5 MW in the UHF band, particular attention must be paid to several critical design aspects, including beam grid interception, beam optics design, thermomechanical effects, and stress. These factors strongly influence the operational stability, device lifetime, and overall performance. The current status of the RF gridded gun design for the tristron is reported
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