The very last slab on the high bay level of the Target Building will be cast next week, where 262 m3 of concrete will be poured for the 'Accelerator to Target' top screed. In the Active Cell, all form work on the high bay level has now been removed, revealing the storage pits and process area beneath. The Technical Gallery (which surrounds the Active Cell in a u-shape) is also nearing completion, with the west suspended wall cast last week. Only have a few concrete casting jobs remain, mainly the Dog Leg Cover, which is ongoing, and some elevator shaft vaults, hatch lids and additional shielding. A number of post-Verified Self Inspections (VSI) are underway in all Target Building areas.
In Tom’s Room (the name affectionately given to the location above the proton beam to be used for monitoring beam instrumentation equipment), the ESS rigging team has lifted shielding plates in place on the shelves above the proton beam, which runs beneath. This was done with a temporary crane and two strong magnets, capable of lifting two tonnes each, with each steel plate weighting four tonnes. Some of the pillars are being taken down in the High Bay in order to make some minor adjustments needed on the pillar base. Once competed, the pillar will be put back in place.
Linac Tunnel: Installation of the RFQ (Radio Frequency Quadrupole) component is ongoing in the east part of the tunnel. Waveguide installation, cable pulling through stubs and installations in connection to the CDS (Cryo Distribution System) is also ongoing.
Klystron Gallery: Inside the Test Stand 2 bunker, cryomodules for the Linac will undergo site acceptance tests, which includes running at full RF power. Preparation of the test stand, including cabling, piping, water skids and waveguide installation, is being finalised and Test Stand 2 will be operational later this autumn.
In the Waste Building, the slabs are being fitted with insulation, form and reinforcement, in preparation for casting of the base slab. The 1 400 m2 area will be cast in four sessions, with the first casting (163 m3 of concrete) planned for the beginning of October.