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16 May 2022

Accelerator

Normal Conducting Linac

Preparations are under way to obtain beam authorisation for beam up to the DTL faraday cup.
Beam commissioning, sending beam from the Ion Source through the Low Energy Beam Transport (LEBT), Radio-Frequency Quadrupole (RFQ) and Medium Energy Beam Transport (MEBT) to Drift Tube Linac tank 1, is expected to start as soon as pre-beam verifications and dry runs are completed.

Cryomodule tests

All four cavities of the previously untested cryomodule (CM04) currently installed inside a test stand bunker have been conditioned. Cool down tests, cooling the cavities to 2 Kelvin, are now under way.

Klystron Gallery Power Sources

High power tests continue in the Radio-Frequency (RF) cells equipped with klystrons and modulators. Polish in-kind partner IFJ PAN is performing the tests, checking the proper functionality and reliability of the power sources.

Experimental Halls

BIFROST chopper pit installation

The base structure for the BIFROST bandwidth chopper is in place in the Beamline Gallery, the fan-shaped hall where beamlines for the long instruments are located. Next, a steel structure for a guide beam will be installed through the base. Chopper housing, neutron guide and control racks will follow.

In-bunker installations

With the bunker wall insert in place, in-bunker activities for BIFROST is expected to start. Drilling has already been performed in the concrete floor, paving the way for the installation of neutron guides and bunker chopper bases.

Bunker wall inserts

Casings for bunker wall inserts for instruments ODIN and DREAM are in place.  Inserts, containing neutron optics, will be placed through the south sector bunker wall. CSPEC and NMX, in the west sector, are also being prepared for wall inserts.

LOKI

Drilling and grouting of baseplates is in progress in the area between the bunker and the cave. Delivery of in-bunker components, including the chopper assembly, is expected in the next weeks.

Bunker cranes

Installation and test lifts are ongoing for the cranes both sides of the bunker.

Target

Monolith clean room

The clean room confinement covering the Monolith’s connection cell area is under construction. The first delivery of inner shielding blocks has been received. Installation of these can begin once the clean room is in place.

LSS frames

The eight upper frames for the Light Shutter System (LSS) in the west sector are in place, with the lower part of the system being connected from the basement level of the Monolith.

Next month the LSS frames for the north sector will follow, and then the south and east sectors later this summer.

MUTS

The shaft for the Target wheel has been lifted in place on top of the Target wheel inside the Mock-Up and Test Stand (MUTS) in the Transport Hall. Further installations will follow, including the drive unit. The plan is to perform handling and rotation tests in the MUTS, prior to installations into the Target Monolith vessel before the end of this year.

Siteplan Archive
D01 bunker crane

The bunker crane inside Experimental Hall 1 is subject to installation.

D01 BWI casing for ODIN and DREAM

Casings are in place for bunker wall inserts to be installed for instruments ODIN and DREAM.

D02 high bay clean room view

A clean room confinement is under construction around the Monolith's connection cell.

D02 TH MUTS wheel shaft

The Target wheel shaft is subject to installation in the Mock-Up and Test Stand.

D03 LOKI bunker to cave works

LOKI bunker to cave works ongoing inside Experimental Hall 2.

D03 LSS frames west view to basement

Upper LSS frames in the R6 area surrounding the Monolith, with the lower frame still to be attached.

E02 BIFROST chopper base

The base structure for the first chopper installation at ESS, for instrument BIFROST.

G02 CM05 tested

Serial testing of cryomodules is ongoing in an on-site test stand bunker.

G02 RF cell modulator and klystrons

Each RF cell in the medium beta gallery will contain two modulators and eight klystrons.

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