2013

Low background x-ray detection with Micromegas for axion research

Aune, S., Castel, J. F., Dafni, T. et al.

Understand

Axion helioscopes aim at the detection of solar axions through their conversion into x-rays in laboratory magnetic fields.

The use of low background x-ray detectors is an essential component contributing to the sensitivity of these searches.
Here we review the recent advances on Micromegas detectors used in the CERN Axion Solar Telescope (CAST) and proposed for the future International Axion Observatory (IAXO).
The most recent Micromegas setups in CAST have achieved background levels of 1.5$\times10^{-6}$\ckcs, a factor of more than 100 lower than the ones obtained by the first generation of CAST detectors.

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