Speaker
Description
UKRI-STFC Daresbury Laboratory has a large vertical cryostat capable of testing 3 large jacketed HB704 SRF cavities for ESS or a single 650 MHz jacketed cavity for PIP-II. As a part of the development of SRF Thin Films Cavities a smaller 300 litres mini-cryostat has been developed and added to the vertical test facility (VTF) enabling testing of a range of bare cavities at operating temperatures between 2K and 4.2K. The 400 mm ID bath cryostat has a modular cavity support insert fully equipped with all the necessary cryogenic and RF instrumentation. The top plate of the cryostat is designed in such a way that the Cryogenic, Vacuum, RF and other control interfaces are compatible with the existing VTF infrastructure for easy switch over between the different cavity tests runs. In this Paper I will give an overview of the SURFlab Vertical Test facilities.