| Paper | Title | Page |
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| THPPH017 | Experience with the Photoinjector Laser at FLASH | 590 |
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| The photoinjector laser system of FLASH is a key element for the generation of high quality electron beams required for a stable and reliable operation of the facility. FLASH is the VUV and soft X-ray FEL user facilitry at DESY. FLASH is based on superconducting accelerating structures allowing to accelerate electron bunch trains of a length of up to 800 us with a repetition rate of 10 Hz. Based on the standard 1 MHz pattern, the laser provides to some extend a flexible bunch train structure. We report on operational issues and on the performance of the laser system with emphasis on its transverse and longitudinal properties, energy and timing stability. |