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Availablity improvement at PETRA III
PETRA III, a third generation synchrotron light source at DESY, had for many years reached availabilities in the order of 95 %, while other light sources reached 98 to 99 %. In recent years, a lot of effort has been put into increasing PETRA's availability, and this year the availability might surpass 98 %. This paper will describe the efforts to increase the availability, and discuss the remaining sources of downtime.