The Spallation Neutron Source at Oak Ridge National Laboratoryâ€”already the worldâ€™s most powerful accelerator-based neutron sourceâ€”will be on a planned hiatus through June 2024 as crews work to upgrade the facility.
Much of the workâ€”part of the facilityâ€™s Proton Power Upgrade projectâ€”will involve building a connector between the accelerator and the planned Second Target Station at SNS, a press release said. When complete, the PPU project will bring the accelerator up to 2.8 megawatts from its currentÂ record-breaking 1.7 megawattsÂ of beam power.
Workers will add about 3,000 square feet of concrete tunnel, the â€œstub,â€ which will integrate with an existing tunnel. Construction tasks include associated structures, roofing, geomembrane liner, tunnel waterproofing, electrical, fire alarm, ventilation systems, and controls.
â€œThe construction crews have performed all of the excavation work and are transitioning to tunnel base and wall construction,â€ said ORNLâ€™s Mark Champion, PPU project manager.[Read more…]