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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

iquid argon characterization of the X-ARAPUCA with alpha particles, gamma rays and cosmic muon

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Souza, V, H. ; Segreto, E. [1] ; Machado, A. A. [1] ; Sarmento, R. R. [1] ; Bazetto, M. C. Q. [2] ; Paulucci, L. [3] ; Marinho, F. [4] ; Pimentel, V. L. [2] ; Demolin, F. L. [1] ; de Souza, G. [1] ; Fauth, A. C. [1] ; Ayala-Torres, M. A. [5]
Total Authors: 12
[1] Souza, H., V, Univ Estadual Campinas, Inst Fis Gleb Wataghin, Unicamp, Rua Sergio Buarque de Holanda 777, BR-13083859 Campinas, SP - Brazil
[2] Ctr Tecnol Informacao Renato Archer CTI, BR-13069901 Campinas, SP - Brazil
[3] Univ Fed Abc, Av Estados 5001, BR-09210170 Santo Andre, SP - Brazil
[4] Univ Fed Sao Carlos, Rodovia Anhanguera, Km 174, BR-13604900 Araras, SP - Brazil
[5] IPN, Ctr Invest & Estudios Avanzados, Apartado Postal 14-740, Cdmx 07000 - Mexico
Total Affiliations: 5
Document type: Journal article
Source: Journal of Instrumentation; v. 16, n. 11 NOV 2021.
Web of Science Citations: 0

The X-ARAPUCA device is the baseline choice for the photon detection system of the first far detector module of the DUNE experiment. We present the results of the first complete characterization of a small scale X-ARAPUCA prototype, which is a slice of a full DUNE module. Its total detection efficiency in liquid argon was measured with three different ionizing radiations: alpha particles, gamma's and muons and resulted to be similar to 2.2% when the active silicon photomultipliers were biased at +5.0 V of over voltage, corresponding to a Photon Detection Efficiency around 50c7o at room temperature. This value comfortably satisfies the requirements of the first DUNE far detector module (detection efficiency > 2.0%) and allows to achieve an energy resolution comparable to the one achievable with the Time Projection Chambers for energies below 10 MeV, which is the region relevant for Supernova neutrino detection. (AU)

FAPESP's process: 19/11557-2 - Light detection system for the DUNE X-ARAPUCA experiment
Grantee:Ana Amélia Bergamini Machado
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 16/01106-5 - Liquid argon program at UNICAMP
Grantee:Ettore Segreto
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 17/13942-5 - Numerical characterization of the ARAPUCA: a new technology for detecting scintillation light in noble liquids
Grantee:Laura Paulucci Marinho
Support Opportunities: Regular Research Grants