11–15 Sept 2023
Europe/Rome timezone

The search for dark matter in DarkSide

13 Sept 2023, 15:00
15m
Room alpha

Room alpha

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Speaker

Giuseppe Matteucci (Istituto Nazionale di Fisica Nucleare)

Description

DarkSide run since mid 2015 a 50-kg-active-mass dual phase Liquid Argon Time Projection Chamber (TPC), filled with low radioactivity argon from an underground source and produced world class results for both the low mass (𝑀<20 𝐺𝑒𝑉/c2) and high mass (𝑀>100 𝐺𝑒𝑉/𝑐2) direct detection search for dark matter.
The next stage of the DarkSide program will be a new generation experiment involving a global collaboration from all the current Argon based experiments. DarkSide-20k, is designed as a 20-tonne fiducial mass dual phase Liquid Argon TPC with SiPM based cryogenic photosensors, and is expected to be free of any instrumental background for an exposure of >100 tonne x year. Like its predecessor, DarkSide-20k will be housed at the INFN Gran Sasso (LNGS) underground laboratory, and it is expected to attain a WIMP-nucleon cross section exclusion sensitivity of 7.4×10−48 cm2 for a WIMP mass of 1𝑇𝑒𝑉/𝑐2 in a 200 t yr run. DarkSide-20k will be installed inside a membrane cryostat containing more than 700 t of liquid Argon and be surrounded by an active neutron veto based on a Gd-loaded acrylic shell. The talk will give the latest updates about the ongoing prototype tests validating the design, the progress of construction and the future plans.

Primary author

Stefano Davini (Istituto Nazionale di Fisica Nucleare)

Co-author

Giuseppe Matteucci (Istituto Nazionale di Fisica Nucleare)

Presentation materials