Performance Status of the RF-Gun Based Injector of the TESLA Test Facility Linac

The TESLA Test Facility Linac (TTFL) at DESY uses two modules with 8 TESLA superconducting accelerating structures each to accelerate an electron beam up to 360MeV. At present, the beam has been used to perform the proof-of-principle test of the TTF Free Electron Laser and to continue various experiments for the TESLA linear collider project. For this, an rf-gun based photoinjector was installed late 1998 and is in operation since then. It produces a 0.8 ms long train of 1 nC or optionally 8 nC bunches spaced by 1 $\mu$s with low transverse emittance. Theperformance of the injector during the last run from July 1999 to end of April 2000 is reported