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  First results on the search for chameleons with the KWISP detector at CAST

Cuendis, S. A., Baier, J., Barth, K., Baum, S., Bayirli, A., Belov, A., et al. (2019). First results on the search for chameleons with the KWISP detector at CAST. Physics of the Dark Universe, 26: 100367. doi:10.1016/j.dark.2019.100367.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-83C2-B Version Permalink: http://hdl.handle.net/21.11116/0000-0005-83C3-A
Genre: Journal Article

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Cuendis, S. Arguedas, Author
Baier, J., Author
Barth, K., Author
Baum, S., Author
Bayirli, A., Author
Belov, A., Author
Bräuninger, H.1, Author              
Cantatore, G., Author
Carmona, J. M., Author
Castel, J. F., Author
Cetin, S. A., Author
Dafni, T., Author
Davenport, M., Author
Dermenev, A., Author
Desch, K., Author
Döbrich, B., Author
Fischer, H., Author
Funk, W., Author
García, J. A., Author
Gardikiotis, A., Author
Garza, J. G., AuthorGninenko, S., AuthorHasinoff, M. D., AuthorHoffmann, D. H. H., AuthorIguaz, F. J., AuthorIrastorza, I. G., AuthorJakovčić, K., AuthorKaminski, J., AuthorKaruza, M., AuthorKrieger, C., AuthorLakić, B., AuthorLaurent, J. M., AuthorLuzón, G., AuthorMaroudas, M., AuthorMiceli, L., AuthorNeff, S., AuthorOrtega, I., AuthorOzbey, A., AuthorPivovaroff, M. J., AuthorRosu, M., AuthorRuz, J., AuthorChóliz, E. Ruiz, AuthorSchmidt, S., AuthorSchumann, M., AuthorSemertzidis, Y. K., AuthorSolanki, S. K., AuthorStewart, L., AuthorTsagris, I., AuthorVafeiadis, T., AuthorVogel, J. K., AuthorVretenar, M., AuthorYildiz, S. C., AuthorZioutas, K., Author more..
Affiliations:
1High Energy Astrophysics, MPI for Extraterrestrial Physics, Max Planck Society, ou_159890              

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 Abstract: We report on a first measurement with a sensitive opto-mechanical force sensor designed for the direct detection of coupling of real chameleons to matter. These dark energy candidates could be produced in the Sun and stream unimpeded to Earth. The KWISP detector installed on the CAST axion search experiment at CERN looks for tiny displacements of a thin membrane caused by the mechanical effect of solar chameleons. The displacements are detected by a Michelson interferometer with a homodyne readout scheme. The sensor benefits from the focusing action of the ABRIXAS X-ray telescope installed at CAST, which increases the chameleon flux on the membrane. A mechanical chopper placed between the telescope output and the detector modulates the incoming chameleon stream. We present the results of the solar chameleon measurements taken at CAST in July 2017, setting an upper bound on the force acting on the membrane of 80 pN at 95% confidence level. The detector is sensitive for direct coupling to matter 104 ≤ βm ≤ 108, where the coupling to photons is locally bound to βγ ≤ 1011.

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 Dates: 2019-12
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1016/j.dark.2019.100367
Other: LOCALID: 3187966
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Title: Physics of the Dark Universe
Source Genre: Journal
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Pages: - Volume / Issue: 26 Sequence Number: 100367 Start / End Page: - Identifier: ISSN: 2212-6864