Aria is a plant hosting a 350m cryogenic isotopic 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 39Ar in argon extracted from underground sources, called Underground Argon (UAr), which is used for dark-matter searches. Indeed, 39Ar is a β-emitter of cosmogenic origin, whose activity poses background and pile-up concerns in the detectors. 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 the isotopic cryogenic distillation of nitrogen with a prototype plant.

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

Basco, A.;Cataudella, V.;D'Auria, S.;De Candia, A.;De Falco, A.;De Filippis, G.;Della Valle, M.;Franceschi, A.;Gabriele, F.;Hill, S.;Ianni, An.;Ippolito, V.;Lai, M.;Li, X.;Martini, A.;Ragusa, F.;Rignanese, L. P.;Salatino, P.;Santacroce, V.;Santucci, A.;Scioli, G.;Tosti, S.;Wang, Y.;
2021

Abstract

Aria is a plant hosting a 350m cryogenic isotopic 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 39Ar in argon extracted from underground sources, called Underground Argon (UAr), which is used for dark-matter searches. Indeed, 39Ar is a β-emitter of cosmogenic origin, whose activity poses background and pile-up concerns in the detectors. 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 the isotopic cryogenic distillation of nitrogen with a prototype plant.
2021
Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili - STEMS - Sede Secondaria Napoli
dark matter, argon, cryogenic distillation
File in questo prodotto:
File Dimensione Formato  
Separating-sup39supAr-from-sup40supAr-by-cryogenic-distillation-with-Aria-for-darkmatter-searchesEuropean-Physical-Journal-C (1).pdf

accesso aperto

Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 4.44 MB
Formato Adobe PDF
4.44 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/534315
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 23
social impact