%0 Conference Paper
%A Desch, Klaus
%A Kaminski, Jochen
%A Krieger, Christoph
%A Lupberger, Michael
%T Using an InGrid Detector to Search for Solar Chameleons with CAST
%C Hamburg
%I Verlag Deutsches Elektronen-Synchrotron
%M PUBDB-2017-00125
%@ 978-3-935702-43-0
%B DESY-PROC
%P 35-38
%D 2015
%< Desch, Klaus "Using an InGrid Detector to Search for Solar Chameleons with CAST" in Proceedings, 11th Patras Workshop on Axions, WIMPs and WISPs (Axion-WIMP 2015) / Irastorza, Igor G., Redondo, Javier, Carmona, José Manuel, Cebrian, Susana, Dafni, Theopisti, Iguaz, Francisco J., Luzon, Gloria (eds.), Verlag Deutsches Elektronen-Synchrotron : 2015 ; AXION-WIMP 2015 : 11th Patras Workshop on Axions, WIMPs and WISPs, 2015-06-22 - 2015-06-26, Zaragoza
%X We report on the construction, operation experience, and preliminary background measurements of an InGrid detector, i.e. a MicroMegas detector with CMOS pixel readout. The detector was mounted in the focal plane of the Abrixas X-Ray telescope at the CAST experiment at CERN. The detector is sensitive to soft X-Rays in a broad energy range  and thus enables the search for solar chameleons. Smooth detector operation during CAST data taking in autumn 2014 has been achieved. reliminary analysis of background data indicates a background rate of  ×10<sup>−5</sup> keV<sup>−1</sup>cm<sup>−2</sup>s<sup>−1</sup> above 2 keV and  ∼ 3×10<sup>−4</sup> keV<sup>−1</sup>cm<sup>−2</sup>s<sup>−1</sup> around 1 keV. An expected limit of β<sub>γ</sub>  <~5×10<sup>10</sup> on the chameleon photon coupling is estimated in case of absence of an excess in solar tracking data. We also discuss the prospects for future operation of the detector.
%B 11th Patras Workshop on Axions, WIMPs and WISPs
%C 22 Jun 2015 - 26 Jun 2015, Zaragoza (Spain)
Y2 22 Jun 2015 - 26 Jun 2015
M2 Zaragoza, Spain
%F PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 Contribution to a conference proceedingsContribution to a book
%R 10.3204/DESY-PROC-2015-02/desch_klaus
%U https://bib-pubdb1.desy.de/record/316727