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02 July 2021

Experimental Halls

LoKI:
The detector vessel for the LoKI instrument was delivered on site this week. It is now stored in the northwest end of Experimental Hall 2, before installation starts in the other end of the hall. The tank is 12,5 metres long with a 3.5-metre diameter, and was manufactured by AVS engineering and Cadinox in Spain, as part of the UK's in-kind contribution to ESS via STFC.

ESTIA:
Selene guide number one for the instrument ESTIA has arrived at ESS. Manufactured by AVS Engineering in Spain, the 4-meter-long component was pre-installed at the Paul Scherrer Institute (PSI), as part of the Swiss in-kind contribution to ESS. Installation of a guide carrier and vacuum vessel will now start in the east sector bunker inside Experimental Hall 1.

Target

Monolith port tubes
Scaffolding is in place and the Monolith vessel has been covered with tarpaulin to protect from dust. 39 port tubes are to be welded to the openings of the vessel. The first step is to install bottom plates to the base plates already in place in the R6 area around the Monolith. Two bottom plates and two top plates are on the road from the manufacturer ENSA, in Spain.
Welding of the port tubes to the vessel will be done under the in-kind agreement with ESS Bilbao, Spain.

High bay floor valves
The installation of floor valves for the circular openings to the Active Cells is in progress. Several layers of side shielding base plates are to be installed in a frame around the area. This will be followed by floor plates and a shield door on rails. These works are part of the UKAEA in-kind agreement with ESS.

Active Cells
The large hatch to the Active Cell’s maintenance cell has been opened to allow for the lowering of equipment for the start of installation of the intrabay door, separating the two cells.

Target Entrance
Installation of revolving doors is in progress by the entrance on ground level, as well as on the top floor where there will be a sluice entrance to the Target high bay.
Brackets for more cladding panels to be mounted for the cantilever roof protruding over the Target Entrance building and the adjacent passage in to Experimental Hall 1 are in place.
The area outside the Target Entrance building connecting to the Campus plaza and ground concrete has been prepared by the Skanska civil works team. Ground concrete will be poured after the summer holidays.

Accelerator

Test Stand 2
Testing of the first elliptical cryomodule installed in the bunker was temporarily stopped to allow for an exchange of the previously used modulator to an ESS serial-produced model. Prior to the stop, a quick cooldown was performed, to test some functionalities. Once the modulator swap and subsequent reconnection is completed, conditioning and cooling tests will continue.
The second serial-produced medium beta cryomodule is arriving on the ESS site from CEA, France, on Friday 2 July.

RFQ conditioning
In the normal conducting section of the linac RFQ conditioning is progressing, at increasing power and frequency.

Spokes section valve boxes
Four valve boxes and header units for the spokes cryogenic distribution system are expected for delivery on site from IJC Lab, France, this week. Six valve boxes are already in place in the spoke section of the Linac, three of those with header units mounted.

Siteplan Archive
Target summer meadow

Green slope from Accelerator to Target, where façade cladding is ongoing.

D02 Active Cell intrabay

Active Cell – an intrabay door will be installed between the process and maintenance cell.

D02 sombrero

Brackets in place to install more panels of aluminium lamellae to the Target cantilever roof.

Civil area for ground concrete

The area connecting the ESS Campus to the Target Entrance, where ground concrete will be poured after the summer break.

D01 east bunker ESTIA selene guide

The Selene guide for the ESTIA instrument have arrived on site and will be installed in the east sector neutron bunker in Experimental Hall 1.

D02 high bay AC floor valves

Installation of floor valves ongoing for the two openings from the Target high bay to the Active Cells.

D02 Monolith vessel covered

Monolith vessel under cover, awaiting the welding of 39 port tubes.

D02 Target Entrance level 100 revolving doors

Revolving doors for the entrance to the Target building.

D03 LoKI vessel delivered

The detector vessel for the SANS instrument LoKI has been delivered to Experimental Hall 2.

G01 CDS Spokes valveboxes

6 valve boxes for the cryo distribution system to the Spoke section of the linac are in place, with 4 more incoming units.

G01 TSW to NCL

Temporary shielding wall to the normal conducting linac, where RFQ conditioning is ongoing.

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