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Contribution to a conference proceedings/Contribution to a book | PUBDB-2017-00125 |
; ; ;
2015
Verlag Deutsches Elektronen-Synchrotron
Hamburg
ISBN: 978-3-935702-43-0
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Please use a persistent id in citations: doi:10.3204/DESY-PROC-2015-02/desch_klaus
Abstract: 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.
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Book/Proceedings/Report
Proceedings, 11th Patras Workshop on Axions, WIMPs and WISPs (Axion-WIMP 2015)
11th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2015, ZaragozaZaragoza, Spain, 22 Jun 2015 - 26 Jun 2015
Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 1-251 (2015) [10.3204/DESY-PROC-2015-02]
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