Status of the Recommissioning of the Synchrotron Light Source PETRA III

At DESYthe Synchrotron Light SourcePETRA III has been extended in the North and East section of the storage ringto accommodate ten additional beamlines. The PETRA ring was converted into a dedicated synchrotron light sourcefrom 2007 to 2009. Regular user operation started in summer 2010 with a very low emittance of 1 nm at a beam energy of 6 GeV and a total beam current of 100 mA. All photon beamlineswere installed in one octant of the storage ring. Nine straight sections facilitated the installation of insertion devicesfor 14 beam lines. Due to the high demand for additional beamlinesthe lattice of the ring was redesigned to accommodate 10 additional beamlinesin the future. In an one year long shut-down two new experimental halls were built. The recommissioning of PETRA III started in February 2015. We are reporting the current status of the synchrotron light sourceincluding the performance of the subsystems.