Spatial resolution studies with the BabyIAXO Micromegas prototype

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

Resumen: 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 µm at 6 keV was achieved, confirming the strong potential of this technology for application in the final BabyIAXO setup.

Idioma: Inglés

DOI: 10.1016/j.nima.2025.171176

Año: 2025

Publicado en: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1083 (2025), 171176 [8 pp.]
ISSN: 0168-9002

Financiación: info:eu-repo/grantAgreement/EC/H2020/788781/EU/Towards the detection of the axion with the International Axion Observatory/IAXOplus
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-137268NB-C51

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Proy. investigación HCA (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)