The International Axion Observatory (IAXO) is a proposed 4th-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 - 10 keV energies in a strong magnetic field. IAXO will achieve a sensitivity to the axion-photon coupling gaγ down to a few ×10-12 GeV-1 for a wide range of axion masses up to ∼ 0.25 eV. This is an improvement over the currently best (3rd generation) axion helioscope, the CERN Axion Solar Telescope (CAST), of about 5 orders of magnitude in signal strength, corresponding to a factor ∼ 20 in the axion photon coupling. IAXO's sensitivity relies on the construction of a large superconducting 8-coil toroidal magnet of 20 m length optimized for axion research. Each of the eight 60 cm diameter magnet bores is equipped with x-ray optics focusing the signal photons into ∼ 0.2 cm2 spots that are imaged by very low background x-ray detectors. The magnet will be built into a structure with elevation and azimuth drives that will allow solar tracking for 12 hours each day. This contribution is a summary of our papers [1-3] and we refer to these for further details.
|Number of pages||8|
|State||Published - 2015|
|Event||13th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2013 - , United States|
Duration: 8 Sep 2013 → 13 Sep 2013
Bibliographical noteFunding Information:
Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344 with support from the LDRD program through grant 10-SI-015. The LLNL IM release number of this document is LLNL-PROC-652380. We acknowledge support from the Spanish Ministry of Science and Innovation (MICINN) under contract FPA2008-03456 and FPA2011-24058, as well as under the CPAN project CSD2007-00042 from the Consolider-Ingenio 2010 program of the MICINN. Part of these grants are funded by the European Regional Development Fund (ERDF/FEDER). We also acknowledge support from the European Commission under the European Research Council T-REX Starting Grant ERC-2009-StG-240054 of the IDEAS program of the 7th EU Framework Program. We also acknowledge support from the CAST collaboration. The design work on the magnet system was supported by CERN, Physics Department as well as the ATLAS Collaboration. Partial support by the Deutsche Forschungsgemeinschaft (Germany) under grant EXC-153, by the MSES of Croatia and the Russian Foundation for Basic Research (RFBR) is also acknowledged. F. I. acknowledges the support from the Eurotalents program.
© 2015 The Authors.
- astroparticle physics
- dark matter
- strong CP problem
ASJC Scopus subject areas
- Physics and Astronomy (all)