Status report of the enhanced ELBE SRF gun

Within the last years a superconducting RF photoinjector (SRF gun), equipped with all components, was successfully put into operation at the linear accelerator ELBE. Although world’s first LINAC injection was demonstrated and first user experiments were carried out, higher average current and better beam emittances are required. To fulfil this needs a second and significantly enhanced SRF gun is currently under construction at Helmholtz-Zentrum Dresden-Rossendorf (HZDR). The main part of this development is a modified version of our 1.3 GHz 3.5 cell cavity that was fabricated and tested in collaboration with Thomas Jefferson Lab National Accelerator Facility (TJNAF). Moreover, a lot of engineering work was done to fix the problems of our first SRF gun and to integrate a superconducting solenoid into the new cryomodule. In this contribution, we will report on technical challenges, critical assembly steps and first test results of the second version of our superconducting RF photoinjector.