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Simultaneous scintillation light and charge readout of a pure argon filled Spherical Proportional Counter

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arxiv 2201.12621 v1 pith:X2FENEUK submitted 2022-01-29 physics.ins-det

Simultaneous scintillation light and charge readout of a pure argon filled Spherical Proportional Counter

R. Bouet , J. Busto , V. Cecchini , C. Cerna , A. Dastgheibi-Fard , F. Druillole , C. Jollet , P. Hellmuth
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I. Katsioulas P. Knights I. Giomataris M. Gros P. Lautridou A. Meregaglia X. F. Navick T. Neep K. Nikolopoulos F. Perrot F. Piquemal M. Roche B. Thomas R. Ward M. Zampaolo
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classification physics.ins-det
keywords lightcounterproportionalscintillationsphericalargonchargepure
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The possible use of a Spherical Proportional Counter for the search of neutrinoless double beta decay is investigated in the R2D2 R&D project. Dual charge and scintillation light readout may improve the detector performance. Tests were carried out with pure argon at 1.1 bar using a 6x6 mm2 silicon photomultiplier. Scintillation light was used for the first time to trigger in a spherical proportional counter. The measured drift time is in excellent agreement with the expectations from simulations. Furthermore the light signal emitted during the avalanche development exhibits features that could be exploited for event characterisation.

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