Plasma deposited multipactor coating for high power, sapphire, RF windows

This program developed a multipactor coating process for single crystal, sapphire, vacuum windows for high power RF transmission. The process replaces sputtered coatings, which are not tightly bonded to the crystal surface. The process creates molecular bonds between the AlO crystal surface and the TiN coating. The process was used to build a sapphire, RF window that was successfully tested to 45 MW.