UK SBS PR17001 ESS High Beta Cavity Testing

Description

As part of the UK's in-kind contribution to the European Spallation Source (ESS) project, STFC Daresbury Laboratory are committed to perform qualification tests and delivery of 84 (+ 4) high-β dressed cavities by the end of June 2020. The Vertical Test Facility (VTF) in which these cavities will be tested requires a Helium Plant capable of producing superfluid helium at 2K with a warm gas recovery system. The warm gas recovery system will manage the recovery of gas from the return of the Cryostat to either medium or high pressure storage or a combination of both. This specification details the requirements for the supply of two pressure vessels suitable for storage of helium gas, one for medium pressure use (SOL 16 bar) and one for high pressure use (SOL 42 bar).