164210 20251127172931.0 doi 10.1016/j.nima.2025.171176 sideral 146410 ART-2025-146410 eng Quintana, A. Universidad de Zaragoza Spatial resolution studies with the BabyIAXO Micromegas prototype 2025 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. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/EC/H2020/788781/EU/Towards the detection of the axion with the International Axion Observatory/IAXOplus This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 788781-IAXOplus info:eu-repo/grantAgreement/ES/MICINN/PID2022-137268NB-C51 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Castel, J. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Cebrián, S. Universidad de Zaragoza (orcid)0000-0002-6948-5101 Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Díez-Ibáñez, D. Universidad de Zaragoza Ferrer-Ribas, E. Ezquerro, A. Universidad de Zaragoza (orcid)0009-0001-8374-6128 Galán, J. García, J.A. Giganon, A. Goblin, C. Goyal, N. Iguaz, F.J. García Irastorza, I. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Loiseau, C. Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Margalejo, C. Universidad de Zaragoza (orcid)0000-0001-6213-5590 Mirallas, H. Universidad de Zaragoza (orcid)0000-0002-9951-8680 Obis, L. (orcid)0000-0002-7990-2060 Papaevangelou, T. Pérez, O. Universidad de Zaragoza Porrón, J. Universidad de Zaragoza Jiménez Puyuelo, M. Universidad de Zaragoza (orcid)0009-0005-7060-5341 2004 X Universidad de Zaragoza Dpto. Física Teórica Proy. investigación HCA 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 1083 (2025), 171176 [8 pp.] Nucl. instrum. methods phys. res., Sect. A Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 0168-9002 2477081 http://zaguan.unizar.es/record/164210/files/texto_completo.pdf Versión publicada 2664973 http://zaguan.unizar.es/record/164210/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:164210 articulos driver 2025-11-27-15:17:09 ARTICLE