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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 more...

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. more...

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 more...

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. more...

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 more...

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 more...

Published
2015
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4. Search for Solar Axions by the CERN Axion Solar Telescope withHe3Buffer Gas: Closing the Hot Dark Matter Gap

Author

M. Arik, S. Aune, K. Barth, A. Belov, S. Borghi, H. Bräuninger, G. Cantatore, J. M. Carmona, S. A. Cetin, J. I. Collar, E. Da Riva, T. Dafni, M. Davenport, C. Eleftheriadis, N. Elias, G. Fanourakis, E. Ferrer-Ribas, P. Friedrich, J. Galán, J. A. García, A. Gardikiotis, J. G. Garza, E. N. Gazis, T. Geralis, E. Georgiopoulou, I. Giomataris, S. Gninenko, H. Gómez, M. Gómez Marzoa, E. Gruber, T. Guthörl, R. Hartmann, S. Hauf, F. Haug, M. D. Hasinoff, D. H. H. Hoffmann, F. J. Iguaz, I. G. Irastorza, J. Jacoby, K. Jakovčić, M. Karuza, K. Königsmann, R. Kotthaus, M. Krčmar, M. Kuster, B. Lakić, P. M. Lang, J. M. Laurent, A. Liolios, A. Ljubičić, G. Luzón, S. Neff, T. Niinikoski, A. Nordt, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, H. Riege, A. Rodríguez, M. Rosu, J. Ruz, I. Savvidis, I. Shilon, P. S. Silva, S. K. Solanki, L. Stewart, A. Tomás, M. Tsagri, K. van Bibber, T. Vafeiadis, J. Villar, J. K. Vogel, S. C. Yildiz, and K. Zioutas more...

Published
2014
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5. Search for Sub-eV Mass Solar Axions by the CERN Axion Solar Telescope withHe3Buffer Gas

Author

M. Arik, S. Aune, K. Barth, A. Belov, S. Borghi, H. Bräuninger, G. Cantatore, J. M. Carmona, S. A. Cetin, J. I. Collar, T. Dafni, M. Davenport, C. Eleftheriadis, N. Elias, C. Ezer, G. Fanourakis, E. Ferrer-Ribas, P. Friedrich, J. Galán, J. A. García, A. Gardikiotis, E. N. Gazis, T. Geralis, I. Giomataris, S. Gninenko, H. Gómez, E. Gruber, T. Guthörl, R. Hartmann, F. Haug, M. D. Hasinoff, D. H. H. Hoffmann, F. J. Iguaz, I. G. Irastorza, J. Jacoby, K. Jakovčić, M. Karuza, K. Königsmann, R. Kotthaus, M. Krčmar, M. Kuster, B. Lakić, J. M. Laurent, A. Liolios, A. Ljubičić, V. Lozza, G. Lutz, G. Luzón, J. Morales, T. Niinikoski, A. Nordt, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, T. Rashba, H. Riege, A. Rodríguez, M. Rosu, J. Ruz, I. Savvidis, P. S. Silva, S. K. Solanki, L. Stewart, A. Tomás, M. Tsagri, K. van Bibber, T. Vafeiadis, J. A. Villar, J. K. Vogel, S. C. Yildiz, and K. Zioutas more...

Published
2011
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6. The Coronal Diagnostic Spectrometer for the solar and heliospheric observatory

Author

R. A. Harrison, E. C. Sawyer, M. K. Carter, A. M. Cruise, R. M. Cutler, A. Fludra, R. W. Hayes, B. J. Kent, J. Lang, D. J. Parker, J. Payne, C. D. Pike, S. C. Peskett, A. G. Richards, J. L. Gulhane, K. Norman, A. A. Breeveld, E. R. Breeveld, K. F. Al Janabi, A. J. Mccalden, J. H. Parkinson, D. G. Self, P. D. Thomas, A. I. Poland, R. J. Thomas, W. T. Thompson, O. Kjeldseth-Moe, P. Brekke, J. Karud, P. Maltby, B. Aschenbach, H. Bräuninger, M. Kühne, J. Hollandt, O. H. W. Siegmund, M. C. E. Huber, A. H. Gabriel, H. E. Mason, and B. J. I. Bromage more...

Subjects
Space and Planetary Science, Astronomy and Astrophysics
Published
1995
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7. EUV and soft X-ray images of the sun on March 11th, 1971

Author

H. J. Einighammer, G. Krämer, H. Bräuninger, D. H. Höhn, U. Mayer, G. Möllenstedt, M. Mozer, H. Koops, J. Feitzinger, and H. H. Fink

Subjects
Physics, Soft x ray, Space and Planetary Science, Extreme ultraviolet lithography, Photography, Astronomy, Astronomy and Astrophysics, Astrophysics, Ultraviolet radiation
Published
1971
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8. Status and perspectives of the CAST experiment

Author

Biljana Lakić, José Villar, C. Ezer, J. I. Collar, T. Dafni, S. Borghi, Giovanni Cantatore, T. Geralis, F.J. Iguaz, S. C. Yildiz, Theodoros Vafeiadis, M. Davenport, S. N. Gninenko, J. Ruz, Sami K. Solanki, Evangelos Gazis, M. Rosu, Georgios Fanourakis, Hector Gomez, Joachim Jacoby, Georg G. Raffelt, G. Lutz, Julia Vogel, Marin Karuza, Markus Kuster, K. Barth, G. Luzón, A. Liolios, A. Gardikiotis, Timur Rashba, A. Belov, S. Aune, T. Papaevangelou, E. Ferrer-Ribas, N. Elias, F. Haug, M. D. Hasinoff, Peter Friedrich, M Tsagri, I. Savvidis, Raimo Hartmann, H. Riege, Rainer Kotthaus, T. O. Niinikoski, J. M. Carmona, I. G. Irastorza, M. J. Pivovaroff, Dieter H. H. Hoffmann, A Rodríguez, Konstantin Zioutas, J. Morales, E. Gruber, J. A. Garcia, Krešimir Jakovčić, V. Lozza, K. Königsmann, L. Stewart, I. Giomataris, C. Eleftheriadis, A. Nordt, J. M. Laurent, A. Tomás, P. S. Silva, M. Arik, Ante Ljubičić, Javier Galan, Heinrich Bräuninger, Milica Krčmar, Serkant Ali Cetin, T. Guthörl, K. van Bibber, Doğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, TR144760, Arık, Metin, B., Lakić, M., Arik, S., Aune, K., Barth, A., Belov, S., Borghi, H., Bräuninger, Cantatore, Giovanni, J. M., Carmona, S. A., Cetin, J. I., Collar, T., Dafni, M., Davenport, C., Eleftheriadi, N., Elia, C., Ezer, G., Fanouraki, E., Ferrer Riba, P., Friedrich, J., Galán, J. A., García, A., Gardikioti, E. N., Gazi, T., Gerali, I., Giomatari, S., Gninenko, H., Gómez, E., Gruber, T., Guthörl, R., Hartmann, F., Haug, M. D., Hasinoff, D. H. H., Hoffmann, F. J., Iguaz, I. G., Irastorza, J., Jacoby, K., Jakovčić, M., Karuza, K., Königsmann, R., Kotthau, M., Krčmar, M., Kuster, J. M., Laurent, A., Liolio, A., Ljubičić, V., Lozza, G., Lutz, G., Luzón, J., Morale, T., Niinikoski, A., Nordt, T., Papaevangelou, M. J., Pivovaroff, G., Raffelt, T., Rashba, H., Riege, A., Rodríguez, M., Rosu, J., Ruz, I., Savvidi, P. S., Silva, S. K., Solanki, L., Stewart, A., Tomá, M., Tsagri, K., van Bibber, T., Vafeiadi, J., Villar, J. K., Vogel, S. C., Yildiz, and K., Zioutas more...

Subjects
History, Particle physics, solar axion, Physics::Instrumentation and Detectors, 01 natural sciences, 7. Clean energy, Education, Nuclear physics, High Energy Physics::Theory, Phase I, Solar core, 0103 physical sciences, Buffer Gas, 010306 general physics, CERN Axion Solar Telescopes, Axion, Coupling constant, Physics, Coupling Constants, Helioscope, Various Densities, Large Hadron Collider, 010308 nuclear & particles physics, Axion Dark Matter Experiment, X-Rays, High Energy Physics::Phenomenology, Single photon detectors, Phase II, axions, solar physics, dark matter, Computer Science Applications, solar axions, Magnet, X-Ray, CERN Axion Solar Telescope
Abstract

Arık, Metin (Dogus Author) -- The conference paper was firstly submitted to 12th International Conference on Topics in Astroparticle and Underground Physics. The CERN Axion Solar Telescope (CAST) is currently the most sensitive axion helioscope designed to search for axions produced by the Primakoff process in the solar core. CAST is using a Large Hadron Collider (LHC) test magnet where axions could be converted into X-rays with energies up to 10 keV. During the phase I, the experiment operated with vacuum inside the magnet bores and covered axion masses up to 0.02 eV. In the phase II, the magnet bores were filled with a buffer gas (first 4He and later 3He) at various densities in order to extend the sensitivity to higher axion masses (up to f .18 eV). The phase II data taking was completed in 2011. So far, no evidence of axion signal has been found and CAST set the most restrictive experimental limit on the axion-photon coupling constant over a broad range of axion masses. The latest CAST results with 3He data in the mass range 0.39 eV < m a < 0.64 eV will be presented. more...

Published
2012
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