The world’s first superconducting RF photo injector operated at a LINAC

The success of future synchrotron light sources mainly depends on the development of an appropriate electron source. At the moment, the superconducting radio frequency (RF) photo injectors (SRF guns) seem to be the most promising candidate to achieve the required peak brightness and the high average current at the same time. This contribution summarizes the working principle and important results of the most advanced SRF gun project in the world.