- Typ
- Konferenz-Proceedings
- Gebiet
- Detektorentwicklung
- Autor
- K. Desch, J. Kaminski, C. Krieger, M. Lupberger
- Titel
- Using an InGrid Detector to Search for Solar Chameleons with CAST
- Datum
- 2015-09
- Reportnummer
- arXiv:1509.01418 [physics.ins-det]
- Kurzfassung
- 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 (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. Preliminary analysis of background data indicates a background rate of 1−5×10−5keV−1cm−2s−1 above 2 keV and ∼3×10−4keV−1cm−2s−1 around 1 keV. An expected limit of βγ≲5×1010 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.
- Link
- arXiv e-print 1509.01418