Experiments on the Recirculating Planar Magnetron with Coaxial All-Cavity Extraction

Calibrated microwave power measurements are presented for the Recirculating Planar Magnetron with Coaxial-All-Cavity Extraction (RPM-CACE). Experimental results are compared with computational predictions using the particle-in-cell code ICEPIC. The RPM-CACE was designed using extensive simulation and optimization to demonstrate the RPM concept, and was simulated to operate at 1.89 GHz and produce peak powers of $\sim 400$ MW at 50-70% efficiency. The experiment utilizes a novel coaxial extraction system to minimize the total diameter of the device.