Aria is a plant hosting a 350 m cryogenic iso- topic distillation column, the tallest ever built, which is being installed 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. It was designed to reduce the isotopic abundance of 39 Ar in argon extracted from underground sources, called Underground Argon (UAr), which is used for dark-matter searches. Indeed, 39 Ar is a β-emitter of cos- mogenic origin, whose activity poses background and pile- up concerns in the detectors. In this paper, we discuss the requirements, design, construction, tests, and projected per- formance of the plant for the isotopic cryogenic distillation of argon. We also present the successful results of the isotopic cryogenic distillation of nitrogen with a prototype plant.

Agnes, P., Albergo, S., Albuquerque, I.F.M., Alexander, T., Alici, A., Alton, A.K., et al. (2021). Separating 39Ar from 40Ar by cryogenic distillation with Aria for dark-matter searches. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(4), 359:1-359:18 [10.1140/epjc/s10052-021-09121-9].

Separating 39Ar from 40Ar by cryogenic distillation with Aria for dark-matter searches

S. Bussino
Membro del Collaboration Group
;
S. M. Mari
Membro del Collaboration Group
;
S. Sanfilippo
Membro del Collaboration Group
;
2021

Abstract

Aria is a plant hosting a 350 m cryogenic iso- topic distillation column, the tallest ever built, which is being installed 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. It was designed to reduce the isotopic abundance of 39 Ar in argon extracted from underground sources, called Underground Argon (UAr), which is used for dark-matter searches. Indeed, 39 Ar is a β-emitter of cos- mogenic origin, whose activity poses background and pile- up concerns in the detectors. In this paper, we discuss the requirements, design, construction, tests, and projected per- formance of the plant for the isotopic cryogenic distillation of argon. We also present the successful results of the isotopic cryogenic distillation of nitrogen with a prototype plant.
Agnes, P., Albergo, S., Albuquerque, I.F.M., Alexander, T., Alici, A., Alton, A.K., et al. (2021). Separating 39Ar from 40Ar by cryogenic distillation with Aria for dark-matter searches. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(4), 359:1-359:18 [10.1140/epjc/s10052-021-09121-9].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/387250
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