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Your search keyword '"H. Bräuninger"' showing total 3 results
Start Over Author "H. Bräuninger" Database Directory of Open Access Journals
3 results on '"H. Bräuninger"'

1. Search for Dark Matter Axions with CAST-CAPP

Author

C. M. Adair, K. Altenmüller, V. Anastassopoulos, S. Arguedas Cuendis, J. Baier, K. Barth, A. Belov, D. Bozicevic, H. Bräuninger, G. Cantatore, F. Caspers, J. F. Castel, S. A. Çetin, W. Chung, H. Choi, J. Choi, T. Dafni, M. Davenport, A. Dermenev, K. Desch, B. Döbrich, H. Fischer, W. Funk, J. Galan, A. Gardikiotis, S. Gninenko, J. Golm, M. D. Hasinoff, D. H. H. Hoffmann, D. Díez Ibáñez, I. G. Irastorza, K. Jakovčić, J. Kaminski, M. Karuza, C. Krieger, Ç. Kutlu, B. Lakić, J. M. Laurent, J. Lee, S. Lee, G. Luzón, C. Malbrunot, C. Margalejo, M. Maroudas, L. Miceli, H. Mirallas, L. Obis, A. Özbey, K. Özbozduman, M. J. Pivovaroff, M. Rosu, J. Ruz, E. Ruiz-Chóliz, S. Schmidt, M. Schumann, Y. K. Semertzidis, S. K. Solanki, L. Stewart, I. Tsagris, T. Vafeiadis, J. K. Vogel, M. Vretenar, S. Youn, and K. Zioutas

Subjects
Science
Abstract

Haloscopes aim at detecting axions by converting them into photons using high-quality resonant cavities, where the cavity resonance should be tuned with the unknown axion mass. Here, the authors improve exclusion limits using four phase-matched resonant cavities and a fast frequency scanning technique.

Published
2022
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2. First results of the CAST-RADES haloscope search for axions at 34.67 μeV

Author

A. Álvarez Melcón, S. Arguedas Cuendis, J. Baier, K. Barth, H. Bräuninger, S. Calatroni, G. Cantatore, F. Caspers, J. F. Castel, S. A. Cetin, C. Cogollos, T. Dafni, M. Davenport, A. Dermenev, K. Desch, A. Díaz-Morcillo, B. Döbrich, H. Fischer, W. Funk, J. D. Gallego, J. M. García Barceló, A. Gardikiotis, J. G. Garza, B. Gimeno, S. Gninenko, J. Golm, M. D. Hasinoff, D. H. H. Hoffmann, I. G. Irastorza, K. Jakovčić, J. Kaminski, M. Karuza, B. Lakić, J. M. Laurent, A. J. Lozano-Guerrero, G. Luzón, C. Malbrunot, M. Maroudas, J. Miralda-Escudé, H. Mirallas, L. Miceli, P. Navarro, A. Ozbey, K. Özbozduman, C. Peña Garay, M. J. Pivovaroff, J. Redondo, J. Ruz, E. Ruiz Chóliz, S. Schmidt, M. Schumann, Y. K. Semertzidis, S. K. Solanki, L. Stewart, I. Tsagris, T. Vafeiadis, J. K. Vogel, E. Widmann, W. Wuensch, and K. Zioutas

Subjects
Dark matter, Dark Matter and Double Beta Decay (experiments), Exotics, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part of the CERN Axion Solar Telescope (CAST), searching for axion dark matter in the 34.67 μeV mass range. A radio frequency cavity consisting of 5 sub-cavities coupled by inductive irises took physics data inside the CAST dipole magnet for the first time using this filter-like haloscope geometry. An exclusion limit with a 95% credibility level on the axion-photon coupling constant of g aγ ≳ 4 × 10 −13 GeV −1 over a mass range of 34.6738 μeV < m a < 34.6771 μeV is set. This constitutes a significant improvement over the current strongest limit set by CAST at this mass and is at the same time one of the most sensitive direct searches for an axion dark matter candidate above the mass of 25 μeV. The results also demonstrate the feasibility of exploring a wider mass range around the value probed by CAST-RADES in this work using similar coherent resonant cavities.

Published
2021
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3. Search for chameleons with CAST

Author

V. Anastassopoulos, M. Arik, S. Aune, K. Barth, A. Belov, H. Bräuninger, G. Cantatore, J.M. Carmona, S.A. Cetin, F. Christensen, J.I. Collar, T. Dafni, M. Davenport, K. Desch, A. Dermenev, C. Eleftheriadis, G. Fanourakis, E. Ferrer-Ribas, P. Friedrich, J. Galán, J.A. García, A. Gardikiotis, J.G. Garza, E.N. Gazis, T. Geralis, I. Giomataris, C. Hailey, F. Haug, M.D. Hasinoff, D.H.H. Hoffmann, F.J. Iguaz, I.G. Irastorza, J. Jacoby, A. Jakobsen, K. Jakovčić, J. Kaminski, M. Karuza, M. Kavuk, M. Krčmar, C. Krieger, A. Krüger, B. Lakić, J.M. Laurent, A. Liolios, A. Ljubičić, G. Luzón, S. Neff, I. Ortega, T. Papaevangelou, M.J. Pivovaroff, G. Raffelt, H. Riege, M. Rosu, J. Ruz, I. Savvidis, S.K. Solanki, T. Vafeiadis, J.A. Villar, J.K. Vogel, S.C. Yildiz, K. Zioutas, P. Brax, I. Lavrentyev, and A. Upadhye

Subjects
Chameleon, CAST, SDD, X-ray, Tachocline, Dark energy, Physics, QC1-999
Abstract

In this work we present a search for (solar) chameleons with the CERN Axion Solar Telescope (CAST). This novel experimental technique, in the field of dark energy research, exploits both the chameleon coupling to matter (βm) and to photons (βγ) via the Primakoff effect. By reducing the X-ray detection energy threshold used for axions from 1 keV to 400 eV CAST became sensitive to the converted solar chameleon spectrum which peaks around 600 eV. Even though we have not observed any excess above background, we can provide a 95% C.L. limit for the coupling strength of chameleons to photons of βγ≲1011 for 1

Published
2015
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