Beam position monitoring based on RF heterodyning and log-ratio signal processing for electron accelerator systems

(BPM) and control is presented. For the first time, the combination of conventional BPM hardware and individually designed RF circuitry for S-Band accelerators is investigated and its applicability to beam position measurements is validated. The concept is based on heterodyning higher harmonics of the beam spectrum and processing them by means of the log- ratio technique. Measurement results gathered with an 8-channel receiver module and a test stand, based on a 6 MeV electron beam, are also presented.