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The DarkSide-20k TPC and Underground Argon Cryogenic System

by T. N. Thorpe

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Submission summary

Authors (as registered SciPost users): Thomas Thorpe
Submission information
Preprint Link:  (pdf)
Date accepted: 2023-04-28
Date submitted: 2022-11-22 13:19
Submitted by: Thorpe, Thomas
Submitted to: SciPost Physics Proceedings
Proceedings issue: 14th International Conference on Identification of Dark Matter (IDM2022)
Ontological classification
Academic field: Physics
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Experiment
Approach: Experimental


DarkSide-20k (DS-20k) will exploit the physical and chemical properties of liquid argon housed within a large dual-phase time project chamber (TPC) in its direct search for dark matter. The TPC will utilize a compact, integrated design with many novel features to enable the \SI{20}{t} fiducial volume of underground argon. Underground Argon (UAr) is sourced from underground CO$_2$ wells and depleted in the radioactive isotope $^{39}$Ar, greatly enhancing the experimental sensitivity to dark matter interactions. Sourcing and transporting the $\mathcal{O}$(\SI{100}{t}) of UAr for DS-20k is costly, and a dedicated single-closed-loop cryogenic system has been designed, constructed, and tested to handle the valuable UAr. We present an overview of the DS-20k TPC design and the first results from the UAr cryogenic system.

List of changes

Removed text from Section 2.

Edited figures for consistency and made them smaller.

Further proofread all text.

Published as SciPost Phys. Proc. 12, 069 (2023)

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