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Spatial resolution studies with the BabyIAXO Micromegas prototype

by Papaevangelou, T , Loiseau, C , Dafni, T , Iguaz, F J , Galán, J , Díez-Ibáñez, D , Castel, J , Ferrer-Ribas, E , García, J A , Cebrián, S , Irastorza, I G , Ezquerro, A , Margalejo, C , Luzón, G , Goyal, N , Pérez, O , Giganon, A , Quintana, A , Obis, L , Porrón, J , Mirallas, H , Goblin, C , Puyuelo, M J

in Beams (radiation) / Prototypes / Sensors / Spatial resolution / X ray detectors

2025

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Spatial resolution studies with the BabyIAXO Micromegas prototype

in Beams (radiation) / Prototypes / Sensors / Spatial resolution / X ray detectors

2025

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Spatial resolution studies with the BabyIAXO Micromegas prototype

in Beams (radiation) / Prototypes / Sensors / Spatial resolution / X ray detectors

2025

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Paper

Spatial resolution studies with the BabyIAXO Micromegas prototype

Papaevangelou, T,

Loiseau, C,

Dafni, T,

Iguaz, F J,

Galán, J,

Díez-Ibáñez, D,

Castel, J,

Ferrer-Ribas, E,

García, J A,

Cebrián, S,

Irastorza, I G,

Ezquerro, A,

Margalejo, C,

Luzón, G,

Goyal, N,

Pérez, O,

Giganon, A,

Quintana, A,

Obis, L,

Porrón, J,

Mirallas, H,

Goblin, C,

Puyuelo, M J

2025

Overview

The spatial resolution of the Micromegas prototype developed for the BabyIAXO experiment was evaluated using a low-energy X-ray beam at the SOLEIL synchrotron facility. BabyIAXO, currently under construction, aims to search for hypothetical solar axions. A key component of the experiment is a low-background X-ray detector with high efficiency in the 1-10 keV energy range and stringent background rejection capabilities. Achieving a spatial resolution on the order of, or better than, 1 mm is critical for accurately reconstructing signal shapes and positions, and for effectively discriminating between signal and background events. Therefore, a precise characterization of the detector's spatial resolution is essential to validate its suitability for the experiment. This study involved scanning the IAXO-D1 Micromegas detector under various beam energies, positions, and drift field configurations to evaluate their influence on spatial resolution. A resolution of approximately 100 \\(\\mu\\)m at 6 keV was achieved, confirming the strong potential of this technology for application in the final BabyIAXO setup.

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Publisher

Cornell University Library, arXiv.org

Subject

/ Sensors