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13 June 2022

NCL commissioning

Beam commissioning activities to the faraday cup of Drift Tube Linac 1 continues, with close monitoring from the ESS main control room.

All copper parts are in place for DTL tanks 2-4, with machining and bead pulling following. Installation in the tunnel of these 3 tanks will take place after the summer holidays.

Cryomodule serial testing

Site Acceptance Test of medium beta cryomodule CM04 is completed, with all four cavities cooled down to 2 Kelvin. This was the first cryomodule to undergo its full test cycle at ESS (not pre-tested at CEA, France). The next cryomodule will be installed inside the test bunker within the next weeks.

Monolith installations

Survey and alignment inside the Monolith vessel are in the final stages, with the installation of inner shielding blocks projected to start shortly. A cleanroom confinement is in place, and the bottom sections of the inner shielding has been delivered to the high bay.

Getting ready to spin the wheel

Inside the cleanroom of the Target Mock-up and Test Stand positioning of the Target monitoring plug has been performed, in preparation for connection to the electrical and controls racks. The Target wheel drive unit has been inspected in the on-site workshop, and installation on top of the Target Wheel shaft is next.

LSS frames

As frames for the Light Shutter System in the west sector were completed, works have continued in the north sector. The LSS frames sit in a 6-metre radius from the centre of the Monolith, and provide the interface between the port tubes and the neutron guide system.

Optics Assembly ongoing

Neutron beam optics have been installed into the Neutron Beam Port Insert for the first part of the guide for ODIN. Assembly of the neutron guide for LOKI and the Test Beamline will follow.

BIFROST instrument

The lower shielding blocks for the BIFROST beamline are in place from the bunker wall to the beamline gallery window. Inside the neutron shielding bunker, the first part of the neutron guide is in place for BIFROST.

BEER guide

The first neutron guide assembly to the vacuum housing for the BEER beamline has taken place. The sensitive guide made of glass was inserted and the position measured down to the micrometers. This installation is taking place in the fan-shaped Beamline Gallery, with works performed by Mirrotron, under the Czech part of the in-kind contribution agreement for the BEER instrument, via Nuclear Physics Institute (NPI).

ODIN instrument

The first casting for the base slab for the ODIN experimental cave was performed. A ramp connecting the cave to the adjacent control cabin was cast, as well as the first layer of the slab.

Inside the south sector of the bunker, the base structure for the ODIN neutron guides is in place, with installation of the guide scheduled to follow in the summer.

DREAM instrument

The control cabin and experimental cave are structurally completed. Preparations are under way to start installation of the frame structure for the detector and sample vessel inside the cave.

Siteplan Archive
D01 bunker ODIN guide base

Base structure for neutron guides inside the south sector bunker, for ODIN.

D01 DREAM detector supports

Frame structures for the DREAM detector and sample vessel have been delivered, with installation pending.

D01 ODIN cave

Outline of the ODIN cave.

D02 bunker LSS frames

Light Shutter System frames are put in place around each of the 42 port tubes surrounding the Monolith.

D02 Target building

ESS Target building and short instrument halls, seen from the Accelerator green roof.

E01 ODIN neutron guide

Optics assembly for the neutron guide for ODIN, together with Swiss Neutronics, working under the PSI in-kind contribution agreement.

E01 ODIN neutron guide

The copper-mantled guide for ODIN is integrated from the top of the insert, then carefully positioned.

E02 BEER neutron guide

Precision is key - the neutron guide for BEER is being aligned inside the metal tube.

D03 BIFROST lower shielding

Lower shielding blocks for BIFROST.

D02 MUTS wheel shaft and monitoring plug

Target monitoring plug next to wheel and shaft.

D03 bunker wall closed

Three guides through the west bunker wall for BIFROST, CSPEC and NMX.

D02 Monolith

Inside the Monolith cleanroom.

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