Multi-layered waveguide DC electrical break for the PEFP microwave proton source

Woodpile EBG waveguide as a DC electrical break for microwave ion sources

“…The ion sources plasma chambers are placed at high voltage (up to 50 kV) to allow the beam extraction. In order to insulate the high voltage plasma chamber from microwave amplifier located at ground, a device (called hereinafter DC‐Break) able to break the DC‐path and to efficiently transfer RF power (usually up to 1 kW) has to be inserted in the RF feeding line.…”