Comparing the performance of CuO dispersive media for O2 capturing in Liquid Argon

Author(s):Show less -

Caffer, A. M. ; Goncalves, R. G. ; Pizzi, H. B. ; Passos, D. S. ; Carvalho, M. H. ; Reis, C. ; Mazali, I. O. ; Cardoso, D. ; Soccol, R. ; Bianchi, P. ; Noriler, D. ; dos Santos, C. R. A. ; Fontes, M. ; Correia, D. ; da Motta, H. ; Demolin, F. ; Augusto, A. ; Doubnik, R. ; Montanari, D. ; Alegre, T. P. M. ; Machado, A. A. ; Segreto, E. ; Adriano, C. ; Assaf, Elisabete M. ; Assaf, J. M. ; Pagliuso, P. G.

• Document type: Journal article
• Source: Journal of Instrumentation; v. 20, n. 3, p. 8-pg., 2025-03-01.

Abstract

In this work, we have explored the potential of oxygen capture in Liquid Argon (LAr) of the innovative CuO dispersive layered double hydroxide media (R-LDH) and the Ce-doped R-LDH. Low-temperature experiments in the LAr Purification Cryostat (PuLArC) at IFGW/Unicamp were performed using LAr circulation through two filters, one containing the R-LDH (or the Ce-doped R-LDH) material and the other the BASF commercial copper material (Cu-02265 - proposed as a reference O2 getter media by Fermilab) for comparison. Interestingly, the experiments performed in PuLArC revealed that the R-LDH and Ce-doped R-LDH innovative media were capable of capturing O2 from recirculating LAr in PuLArC. For instance, the R-LDH media reduced the O2 contaminants concentration by 80% of its initial values after 200 min of LAr circulation. As for the reference media BASF Cu-S0226, this media reduced the O2 concentration by 40% of its initial value in the same time window. The performance/kg of the studied media will be compared and we will discuss the putative higher potential of the innovative Ce-doped and pure R-LDH media for O2 capturing in LAr which may invoke further tests of these media in larger scale LAr cryostats, possibly at Fermilab and CERN. (AU)

• FAPESP's process: 24/07128-7 - Advanced Instrumentation for large facilities in High Energy Physics: LAr purification and Photodetection for LBNF-DUNE
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Special Projects
• FAPESP's process: 20/01609-2 - Optimization of argon Purifiction, regeneration and condensation procedures for large scale facilities
• Grantee: Pascoal Jose Giglio Pagliuso
• Support Opportunities: Regular Research Grants