Background Studies of the PN-CCD Detector of CAST

Details Background Studies of the PN-CCD Detector of CAST Background Studies of the PN-CCD Detector of CAST

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007idm..conf..554r&link_type=abstract

THE IDENTIFICATION OF DARK MATTER. Proceedings of the Sixth International Workshop. Held 11-16 September 2006 in Rhodes, Greece.

Physics

Optics

Scientific paper

A backside illuminated pn-CCD detector in conjunction with an X-ray mirror optics is one of the three detectors used in the CERN Axion Solar Telescope (CAST) to register the expected photon signal. A background study performed for this detector shows that the level (8.00 ± 0.07) × 10-5 counts cm-2 s-1 keV-1 between 1 and 7 keV is to be dominated by the external gamma background due to natural activities at the experimental site, while radioactive impurities in the detector itself and cosmic neutrons contribute a much smaller fraction.

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