newsletter september 2021 bines EDM, WEDM and milling. Multiple sets of pro ther with the refrigeration system, the pressure and va totypes of the PBW have been made, until the design cuum systems are routed to activate the remote seals. and manufacturing have proven their feasibility. Mechanical design of the PBI Due to the high levels of irradiation, it is necessary to “ESS Bilbao has been awarded a contract to perform replace the PBW every 6 months of operation. For this the thermomechanical design for the PBI (Proton Beam reason, it has been necessary to design a remote de Instrumentation) to be installed in the PBW. In this way, ployment and extraction system and pneumatic sealing of the two atmospheres. The PBW incorporates two we hope to help the other stakeholders to finish de vacuum seals that are activated remotely. Through a fining their interfaces with our component; while we combined system of bellows and pressure membranes, manage to make visible the technical capabilities of our together with vacuum grooves, it is possible to achieve design team”, says Raúl Vivanco, Project Maganer at leakage rates lower than 2E-5 mbar-l/s. ESS Bilbao. Remote operation and feeding of the system Likewise, tests are being carried out in the Advance To protect from high radiation dose rates, a 17t shiel Welding Facility that ESS Bilbao has in Júndiz to valida ding fills the empty volume used for the installation. te a welding procedure in Al6061 using EBW (Electron The cooling system will consist of two independent Beam Welding). loops that are introduced at 4 meters and are channe The ESS Bilbao Target Group, led by Raúl Vivanco lled through the shielding in the shape of a helix that as Project Manager is developing the different work minimizes the dose levels emitted by the PBW. Toge packages. Termomechanical camera PBW vacuum seals remotely actionable 11