Cryo-Collimator-Prototype for FAIR accelerators tested at GSI
The first prototype of a cryo-collimator for the planned superconducting FAIR accelerator SIS100 is presently being tested at GSI. At the end of the month it will be mounted in an experiment using the ion beam of the existing GSI accelerators. The gold plating of the collimator ensures that upon impact of beam particles only few particles will be emitted into the beam pipe. Thus a stable vacuum inside the accelerator can be maintained, leading the path to high heavy ion beam intensities. At room temperature the technology is already in operation in the existing GSI accelerator. In the SIS100 60 cryo-collimators will be installed in total. During operation parts of them will be cooled with liquid helium to approx. 5 Kelvin.