Auftragsänderung 1: Polished plates for pillow-seal vacuum seals

Polished vacuum sealing plates 16 plates flat and well polished made of stainless steel shall be built. There are variations in shape, round ones with outer diameter of 730 mm and racetrack shape with length of 1430 mm. In the middle there is an opening for the free aperture of the beam pipe system. The plates are intended for the Super-FRS in the new accelerator facility FAIR under construction in Darmstadt, Germany. Pillow-seals with inflatable metal foils are a way to avoid bolting in dangerous areas and themselves they are radiation hard. As counterparts they require the polished plates in this tender. Different to a normal vacuum seals here not only a groove has to machined for sealing but a larger surface. On the backside these plates are equipped for normal sealing systems like CF or other metal gaskets for the larger ones. The plates will be bolted to vacuum chambers in the Super-FRS beamline. Schematic drawings of the sizes and required surfaces exist, detailed manufacturing drawings have to be made.