Electron source for superconducting resonator, has resonator made of superconducting material, and coupler cell arranged with coaxial conductor, which is attached outside resonator on cathode side in direct proximity of resonator

摘要

The source has a resonator (1) made of superconducting material, and a coupler cell (3) arranged with a coaxial conductor (4), which is attached outside the resonator on the cathode side in direct proximity of the resonator. A cathode (2) is inserted in such a manner that it is electrically and thermally isolated by an vacuum gap of the resonator and is cooled with liquid nitrogen.