Micromegas for Axion Search and Prospects

Details Micromegas for Axion Search and Prospects Micromegas for Axion Search and Prospects

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jphcs..65a2010a&link_type=abstract

Journal of Physics: Conference Series, Volume 65, Issue 1, pp. 012010 (2007).

Physics

Scientific paper

The Micromegas technology can be used to construct very powerful detectors for low background, low energy measurements. A Micromegas X-ray detector has been used to search for solar axions in the CAST experiment at CERN. The detector has an active area of 7 cm × 7 cm, a very good x-y position, and a good energy resolution. It is built using low radioactivity materials and it is capable of low energy X-ray measurements of a few hundred eV. Despite the lack of external shielding the obtained background level is below 5 × 105 counts/keV/cm2/s. The detector is being upgraded with a reduced active area Micromegas module, a focusing X-Ray telescope and shielding, which are expected to further reduce the background by about two orders of magnitude.

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