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001     316727
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041 _ _ |a English
100 1 _ |a Desch, Klaus
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111 2 _ |a 11th Patras Workshop on Axions, WIMPs and WISPs
|c Zaragoza
|d 2015-06-22 - 2015-06-26
|g AXION-WIMP 2015
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245 _ _ |a Using an InGrid Detector to Search for Solar Chameleons with CAST
260 _ _ |a Hamburg
|c 2015
|b Verlag Deutsches Elektronen-Synchrotron
295 1 0 |a 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
300 _ _ |a 35-38
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520 _ _ |a 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 \J{(0.3--10)~keV } and thus enables the search for solar chameleons. Smooth detector operation during CAST data taking in autumn 2014 has been achieved. \J{A p}reliminary analysis of background data indicates a background rate of \J{(1--5)}$ \times 10^{-5}~\mathrm{keV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$ above 2~keV and $\sim 3\times 10^{-4}~\mathrm{keV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$ around 1~keV. An expected limit of $\beta_\gamma \lesssim 5\times 10^{10}$ 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.
700 1 _ |a Kaminski, Jochen
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700 1 _ |a Krieger, Christoph
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700 1 _ |a Lupberger, Michael
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787 0 _ |a Irastorza, Igor G. et. al.
|d Verlag Deutsches Elektronen-Synchrotron
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|t Proceedings, 11th Patras Workshop on Axions, WIMPs and WISPs (Axion-WIMP 2015)
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