Mainz 2022 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 3: Diagnostics, Control and Instrumentation 1

AKBP 3.4: Talk

Monday, March 28, 2022, 16:45–17:00, AKBP-H13

Slow control loop to stabilize the RF power of the FLUTE electron gun — •Marvin Noll, Nigel Smale, Andreas Böhm, Igor Kriznar, Marcel Schuh, Robert Ruprecht, John Jelonnek, and Anke-Susanne Müller — Karlsruher Institut für Technologie (KIT), Karlsruhe, Germany

The linear accelerator FLUTE (Far Infrared Linac and Test Experiment) at KIT serves as a test facility for accelerator research and for the generation of ultra-intense coherent THz radiation.

To achieve stable THz photon energy and optimal beam trajectory, the energy of the electrons emitted from the RF photo-injector must be stable. The accelerating voltage of the RF cavity has been shown to be a significant influencing factor. Here, we report on the development of a slow closed-loop feedback system to stabilize the RF power and thus the accelerating voltage in the RF photo-injector cavity. With this closed-loop feedback system the relative standard deviation of the RF power in the cavity can be improved by 8.5 %.