An accurate solar axions ray-tracing response of BabyIAXO

(IAXO collaboration) Galán, J; Ahyoune, S; Altenmüller, K; Antolín, I; Basso, S; Brun, P; Candón, FR; Castel, JF; Cebrián, S; Chouhan, D; Della Ceca, R; Cervera-Cortés, M; Chernov, V; Civitani, MM; Cogollos, C; Costa, E; Cotroneo, V; Dafní, T; Derbin, A; Desch, K; Díaz-Martín, MC; Díaz-Morcillo, A; Díez-Ibáñez, D; Pardos, CD; Dinter, M; Döbrich, B; Drachnev, I; Dudarev, A; Ezquerro, A; Fabiani, S; Ferrer-Ribas, E; Finelli, F; Fleck, I; Galanti, G; Galaverni, M; García, JA; García-Barceló, JM; Gastaldo, L; Giannotti, M; Giganon, A; Goblin, C; Goyal, N; Gu, Y; Hagge, L; Helary, L; Hengstler, D; Heuchel, D; Hoof, S; Iglesias-Marzoa, R; Iguaz, FJ; Iñiguez, C; Irastorza, IG; Jakovcic, K; Käfer, D; Kaminski, J; Karstensen, S; Law, M; Lindner, A; Loidl, M; Loiseau, C; López-Alegre, G; Lozano-Guerrero, A; Lubsandorzhiev, B; Luzón, G; Manthos, I; Margalejo, C; Marín-Franch, A; Marqués, J; Marutzky, F; Menneglier, C; Mentink, M; Mertens, S; Miralda-Escudé, J; Mirallas, H; Muleri, F; Muratova, V; Navarro-Madrid, JR; Navick, XF; Nikolopoulos, K; Notari, A; Nozik, A; Obis, L; Ortiz-de-Solórzano, A; O'Shea, T; von Oy, J; Papaevangelou, T; Perez, K; Pérez, O; Picatoste, E; Pivovaroff, MJ; Porrón, J; Puyuelo, MJ; Quintana, A; Redondo, J; Reuther, D; Ringwald, A; Rodrigues, M; Rubini, A; Rueda-Teruel, S; Rueda-Teruel, F; Ruiz-Chóliz, E; Ruz, J; Schaffran, J; Schiffer, T; Schmidt, S; Schneekloth, U; Schönfeld, L; Schott, M; Segui, L; Singh, UR; Soffitta, P; Spiga, D; Stern, M; Straniero, O; Tavecchio, F; Unzhakov, E; Ushakov, NA; Vecchi, G; Vogel, JK; Voronin, DM; Ward, R; Weltman, A; Wiesinger, C; Wolf, R; Yanes-Díaz, A; Yu, Y; Pareschi, G. (2025) An accurate solar axions ray-tracing response of BabyIAXO. Journal of High Energy Physics, 2025 (2). ISSN 1029-8479

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Abstract

BabyIAXO is the intermediate stage of the International Axion Observatory (IAXO) to be hosted at DESY. Its primary goal is the detection of solar axions following the axion helioscope technique. Axions are converted into photons in a large magnet that is pointing to the sun. The resulting X-rays are focused by appropriate X-ray optics and detected by sensitive low-background detectors placed at the focal spot. The aim of this article is to provide an accurate quantitative description of the different components (such as the magnet, optics, and X-ray detectors) involved in the detection of axions. Our efforts have focused on developing robust and integrated software tools to model these helioscope components, enabling future assessments of modifications or upgrades to any part of the IAXO axion helioscope and evaluating the potential impact on the experiment’s sensitivity. In this manuscript, we demonstrate the application of these tools by presenting a precise signal calculation and response analysis of BabyIAXO’s sensitivity to the axion-photon coupling. Though focusing on the Primakoff solar flux component, our virtual helioscope model can be used to test different production mechanisms, allowing for direct comparisons within a unified framework.

Item Type:	Article
Uncontrolled Keywords:	solar axions; axion-photon coupling; X-rays
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Division of Experimental Physics
Depositing User:	Lorena Palameta
Date Deposited:	26 Feb 2026 10:48
URI:	http://fulir.irb.hr/id/eprint/11268
DOI:	10.1007/JHEP02(2025)159

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