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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: https://arxiv.org/abs/2210.00322v2  (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
Specialties:
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Experiment
Approach: Experimental

Abstract

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.

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



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Resubmission 2210.00322v2 on 22 November 2022

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