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Conceptual Design of BabyIAXO, the intermediate stage towards the International Axion Observatory

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arxiv 2010.12076 v3 pith:V7J3CSMU submitted 2020-10-22 physics.ins-det astro-ph.IMhep-ex

A. Abeln , K. Altenmüller , S. Arguedas Cuendis , E. Armengaud , D. Attié , S. Aune , S. Basso , L. Bergé
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This is my paper · ORCID
classification physics.ins-detastro-ph.IMhep-ex
keywords axionbabyiaxoiaxowillalpsaxionsdetectorsfinal
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in the Sun, with unprecedented sensitivity. BabyIAXO is conceived to test all IAXO subsystems (magnet, optics and detectors) at a relevant scale for the final system and thus serve as prototype for IAXO, but at the same time as a fully-fledged helioscope with relevant physics reach itself, and with potential for discovery. The BabyIAXO magnet will feature two 10 m long, 70 cm diameter bores, and will host two detection lines (optics and detector) of dimensions similar to the final ones foreseen for IAXO. BabyIAXO will detect or reject solar axions or ALPs with axion-photon couplings down to $g_{a\gamma} \sim 1.5 \times 10^{-11}$ GeV$^{-1}$, and masses up to $m_a\sim 0.25$ eV. BabyIAXO will offer additional opportunities for axion research in view of IAXO, like the development of precision x-ray detectors to identify particular spectral features in the solar axion spectrum, and the implementation of radiofrequency-cavity-based axion dark matter setups.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Direct detection of solar chameleons with electron recoil data from XENONnT

    hep-ph 2025-11 conditional novelty 5.0 of 10

    XENONnT electron-recoil data bound solar chameleons to log10 β_eff < −6.9, independent of the potential index n for inverse power-law chameleons at the dark-energy scale.

  2. Spatial resolution studies with the BabyIAXO Micromegas prototype

    physics.ins-det 2025-09 conditional novelty 5.0 of 10

    The IAXO-D1 Micromegas prototype achieves 100 to 300 micrometer spatial resolution at 5 to 10 keV, below the 1 mm BabyIAXO requirement, with simulations matching the measurements.

  3. Experiments to test the hypothesis for solar and dark matter axions

    hep-ph 2025-07 unverdicted novelty 1.0 of 10

    This is a pedagogical review of haloscope and helioscope experiments searching for dark matter and solar axions, with an overview of near-future technological developments.

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