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.
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.
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.
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.
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).
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.
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.