THE RF-POWER-CONDITIONING-SYSTEM FOR THE FLASH RF MAIN COUPLERS

The main RF-Couplers for 1.3GHz TESLA-Type cavities in the FLASH linac need several preparation and processing steps. The RF processing is usually done on coupler test stands (2 couplers pairwise), on a single coupler together with a superconducting cavity in the horizontal cavity test stand, on the module test stand (up to 8 cavities) or finally in FLASH. In FLASH one or more modules are connected to one klystron and conditioned together. Therefore the software was forked several times and merged during the last FLASH shutdown into one version. This isflexible enough to handle all these different test setups, without additional programming for IO hardware or data handling. The system is based on LabView, DOOCS [1] and Linux operating system. The working principle is shown, including a possible outlook for the XFEL cavity production and operation.