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Validation of electrodeposited 241Am alpha-particle sources for use in liquified gas detectors at cryogenic temperatures

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arxiv 2403.07539 v1 pith:LARUCRSY submitted 2024-03-12 physics.ins-det hep-ex

E. Calvo Alamillo , M.T. Crespo Vázquez , P.F. Rato Mendes , R. Álvarez Garrote , J.I. Crespo Anadón , C. Cuesta , A. De la Torre Rojo , I. Gil-Botella
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I. Martín Martín M. Mejuto Mendieta C. Palomares L. Pérez Molina J.A. Soto Otón A. Verdugo de Osa
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classification physics.ins-dethep-ex
keywords sourcescryogenichightemperaturesvalidationalpha-particledetectorsprocedure
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This paper describes a procedure for the validation of alpha-particle sources (exempt unsealed sources) to be used in experimental setups with liquefied gases at cryogenic temperatures (down to -196 C) and high vacuum. These setups are of interest for the development and characterization of neutrino and dark matter detectors based on liquid argon, among others. Due to the high purity requirements, the sources have to withstand high vacuum and cryogenic temperatures for extended periods. The validation procedure has been applied to 241Am sources produced by electrodeposition.

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