Relatore
Descrizione
DarkSide-20k is the next future experimental project, that combines the
special technique for the procurement and purification of underground
Argon with the light detection technology based on large arrays of
customized cryogenic photosensors. Together with an accurate selection of
radiopure materials DS-20k experiment is expected to hunt for WIMPs in a
free background mode for an exposure > 100 tonne × year. A large dual
phase Time Projection Chamber surrounded by an active neutron veto based
on a Gd-loaded acrylic shell will be installed inside a cryostat membrane
under construction in the LNGS underground site and containing more than
700 t of liquid Argon. The two TPC optical planes will be instrumented
with more than 21 m2 of Silicon Photomultipliers arranged in 528 Photo
Detection Units that will be massively assembled in the Nuova Officina
Assergi (NOA) a large clean room of 420 m2 deserving cutting edge
technology equipments and in operation since the beginning of 2023. After
a short introduction on Darkside-20k and the PDU concept design, the main
features of NOA clean room packaging site and all the steps of the PDU
production workflow will be presented.
