Scientific installations

Tender description

LoKI is a SANS instrument that will enable scientists to answer the challenging materials science questions of tomorrow in fields from health and aging, to sustainability and energy security. 1 of the first instrument concepts to be proposed and moved into construction, LoKI will be part of the early science programme at ESS. There is a requirement for the design and build of the LoKI detector vacuum vessel. The vessel will be delivered to the ESS neutron facility in Lund, Sweden. The LoKI instrument project is an ISIS in-kind project for the ESS facility involving ESS and UKRI. The vacuum vessel is, to first order, a horizontal cylinder, 3,25 m internal diameter and 11 m long (excluding ends) with profiled removable vessel ends. There are a number of ports into the chamber including a 1,25 m diameter flange on the top (with a removable closing plate) and a similar sized port on the side which is a quick access door. There are also numerous other ports for services and vacuum pumping etc. Fixing brackets, for the detector system and other components, are located inside the vessel. The supplier is to design and build the complete vacuum vessel to meet the requirements of the specification.