Separating $^{39}$Ar from $^{40}$Ar by cryogenic distillation with Aria for dark matter searches

, The Darkside Collaboration and Nowak, J. (2021) Separating $^{39}$Ar from $^{40}$Ar by cryogenic distillation with Aria for dark matter searches. European Physical Journal C: Particles and Fields, 81. ISSN 1434-6044

[img]
Text (Aria_V2)
Aria_V2.pdf - Accepted Version
Available under License Creative Commons Attribution.

Download (7MB)

Abstract

The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft at Carbosulcis S.p.A., Nuraxi-Figus (SU), Italy. Aria is one of the pillars of the argon dark-matter search experimental program, lead by the Global Argon Dark Matter Collaboration. Aria was designed to reduce the isotopic abundance of $^{39}$Ar, a $\beta$-emitter of cosmogenic origin, whose activity poses background and pile-up concerns in the detectors, in the argon used for the dark-matter searches, the so-called Underground Argon (UAr). In this paper, we discuss the requirements, design, construction, tests, and projected performance of the plant for the isotopic cryogenic distillation of argon. We also present the successful results of isotopic cryogenic distillation of nitrogen with a prototype plant, operating the column at total reflux.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
153469
Deposited By:
Deposited On:
12 Apr 2021 13:55
Refereed?:
Yes
Published?:
Published
Last Modified:
09 Dec 2021 08:56