The kick off meeting, held on 16-17 October at the ESS in Lund, follows the signing of the agreement between the ILL and the ESS in July this year.
Thirteen multitube detectors will be built by the ILL and delivered to the ESS by the end of 2027.
Similar to those of the ILL instruments IN5 and PANTHER but slightly bigger, this Helium-3 detector will be made up of 12 multitube modules, plus a spare module, each comprising 32 tubes at a length of 3.5 m long.
Each module will be tested and manufactured at the ILL, then filled with the detection gas at the ESS before installation on the instrument. The agreement includes also the training of ESS staff.
The ILL holds a leading position in this field and continues to support the other neutron centres in Europe, in particular the members of LENS.
The group photo was taken during the visit to the experimental hall at ESS.