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5 results on '"Jakov��i��, K."'

1. First results of the CAST-RADES haloscope search for axions at 34.67 $��$eV

Author

Melc��n, A. ��lvarez, Cuendis, S. Arguedas, Baier, J., Barth, K., Br��uniger, H., Calatroni, S., Cantatore, G., Caspers, F., Castel, J. F, Cetin, S. A., Cogollos, C., Dafni, T., Davenport, M., Dermenev, A., Desch, K., D��az-Morcillo, A., D��brich, B., Fischer, H., Funk, W., Gallego, J. D, Barcel��, J. M Garc��a, Gardikiotis, A., Garza, J., Gimeno, B., Gninenko, S., Golm, J., Hasinoff, M., Hoffmann, D. H. H., Irastorza, I. G., Jakov��i��, K., Kaminski, J., Karuza, M., Laki��, B., Laurent, J. M, Lozano-Guerrero, A., Luz��n, G., Malbrunot, C., Maroudas, M., Miralda-Escud��, J., Mirallas, H., Miceli, L., Navarro, P., Ozbey, A., ��zbozduman, K., Garay, C. Pe��a, Pivovaroff, M., Redondo, J., Ruz, J., Ch��liz, E. Ruiz, Schmidt, S., Schumann, M., Semertzidis, Y., Solanki, S. K, Stewart, L., Tsagris, I., Vogel, T. Vafeiadis J. K., Widmann, E., Wuensch, W., and Zioutas, K.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences
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$��$eV 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$_{a��}\gtrsim 4\times10^{-13} \text{GeV}^{-1}$ over a mass range of 34.6738 $��$eV < $m_a$ < 34.6771 $��$eV 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 $��$eV. 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., 14 pages, 9 figures. Accepted for publication in JHEP. Minor changes done compared to the previous version

Published
2021
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2. CAST search for sub-eV mass solar axions with $^{3}$He buffer gas

Author

Arik, M., Aune, S., Barth, K., Belov, A., Borghi, S., Br��uninger, H., Cantatore, G., Carmona, J. M., Cetin, S. A., Collar, J. I., Dafni, T., Davenport, M., Eleftheriadis, C., Elias, N., Ezer, C., Fanourakis, G., Ferrer-Ribas, E., Friedrich, P., Gal��n, J., Garc��a, J. A., Gardikiotis, A., Gazis, E. N., Geralis, T., Giomataris, I., Gninenko, S., G��mez, H., Gruber, E., Guth��rl, T., Hartmann, R., Haug, F., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jacoby, J., Jakov��i��, K., Karuza, M., K��nigsmann, K., Kotthaus, R., Kr��mar, M., Kuster, M., Laki��, B., Laurent, J. M., Liolios, A., Ljubi��i��, A., Lozza, V., Lutz, G., Luz��n, G., Morales, J., Niinikoski, T., Nordt, A., Papaevangelou, T., Pivovaroff, M. J., Raffelt, G., Rashba, T., Riege, H., Rodr��guez, A., Rosu, M., Ruz, J., Savvidis, I., Silva, P. S., Solanki, S. K., Stewart, L., Tom��s, A., Tsagri, M., van Bibber, K., Vafeiadis, T., Villar, J., Vogel, J. K., Yildiz, S. C., and Zioutas, K.

Subjects
High Energy Physics - Experiment (hep-ex), FOS: Physical sciences, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract

The CERN Axion Solar Telescope (CAST) has extended its search for solar axions by using 3He as a buffer gas. At T=1.8 K this allows for larger pressure settings and hence sensitivity to higher axion masses than our previous measurements with 4He. With about 1 h of data taking at each of 252 different pressure settings we have scanned the axion mass range 0.39 eV < m_a < 0.64 eV. From the absence of excess X-rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g_ag < 2.3 x 10^{-10} GeV^{-1} at 95% CL, the exact value depending on the pressure setting. KSVZ axions are excluded at the upper end of our mass range, the first time ever for any solar axion search. In future we will extend our search to m_a < 1.15 eV, comfortably overlapping with cosmological hot dark matter bounds., 5 pages, 2 figures, updated author list, revised arguments, results unchanged

Published
2011

3. Search for low Energy solar Axions with CAST

Author

Cantatore, Giovanni, Arik, E., Aune, S., Autiero, D., Barth, K., Belov, A., Beltr��n, B., Borghi, S., Boydag, F. S., Br��uninger, H., Cantatore, G., Carmona, J. M., Cebri��n, S., Cetin, S. A., Collar, J. I., Dafni, T., Davenport, M., Di Lella, L., Dogan, O. B., Eleftheriadis, C., Elias, N., Fanourakis, G., Ferrer-Ribas, E., Fischer, H., Franz, J., Gal��n, J., Gazis, E., Geralis, T., Giomataris, I., Gninenko, S., G��mez, H., Hasinoff, M., Heinsius, F. H., Hikmet, I., Hoffmann, D. H. H., Irastorza, I. G., Jacoby, J., Jakov��i��, K., Kang, D., Karageorgopoulou, T., Karuza, M., K��nigsmann, K., Kotthaus, R., Kr��mar, M., Kousouris, K., Kuster, M., Laki��, B., Lasseur, C., Liolios, A., Ljubi��i��, A., Lozza, V., Lutz, G., Luz��n, G., Miller, D., Morales, A., {Deceased}, Morales, J., Niinikoski, T., Nordt, A., Ortiz, A., Papaevangelou, T., Pivovaroff, M., Placci, A., Raiteri, G., Raffelt, G., Riege, H., Rodr��guez, A., Ruz, J., Savvidis, I., Semertzidis, Y., Serpico, P., Solanki, S. K., Soufli, R., Stewart, L., Tsagri, M., van Bibber, K., Villar, J., Vogel, J., Walckiers, L., Zioutas, K., Lindner a., Redondo J., Ringwald A., Cantatore, Giovanni, FOR THE CAST COLLABORATION E., Arik, S., Aune, D., Autiero, K., Barth, A., Belov, B., Beltrán, S., Borghi, F. S., Boydag, H., Bräuninger, Cantatore, G., J. M., Carmona, S., Cebrián, S. A., Cetin, J. I., Collar, T., Dafni, M., Davenport, L., DI LELLA, O. B., Dogan, C., Eleftheriadi, N., Elia, G., Fanouraki, E., FERRER RIBAS, H., Fischer, J., Franz, J., Galán, E., Gazi, T., Gerali, I., Giomatari, S., Gninenko, H., Gómez, M., Hasinoff, F. H., Heinsiu, I., Hikmet, D. H. H., Hoffmann, I. G., Irastorza, J., Jacoby, K., Jakoväiä, D., Kang, T., Karageorgopoulou, M., Karuza, K., Königsmann, R., Kotthau, M., Krämar, K., Kousouri, M., Kuster, B., Lakiä, C., Lasseur, A., Liolio, A., Ljubiäiä, V., Lozza, G., Lutz, G., Luzón, D., Miller, A., Morale, Deceased, J., Morale, T., Niinikoski, A., Nordt, A., Ortiz, T., Papaevangelou, M., Pivovaroff, A., Placci, G., Raiteri, G., Raffelt, H., Riege, A., Rodríguez, J., Ruz, I., Savvidi, Y., Semertzidi, P., Serpico, S. K., Solanki, R., Soufli, L., Stewart, M., Tsagri, K., VAN BIBBER, J., Villar, J., Vogel, L., Walckier, and K., Zioutas

Subjects
WISPs, WISP, detector, Physics::Instrumentation and Detectors, Axions, Physics, FOS: Physical sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Axion, detectors, solar physics, Particle Physics - Experiment
Abstract

We have started the development of a detector system, sensitive to single photons in the eV energy range, to be suitably coupled to one of the CAST magnet ports. This system should open to CAST a window on possible detection of low energy Axion Like Particles emitted by the sun. Preliminary tests have involved a cooled photomultiplier tube coupled to the CAST magnet via a Galileian telescope and a switched 40 m long optical fiber. This system has reached the limit background level of the detector alone in ideal conditions, and two solar tracking runs have been performed with it at CAST. Such a measurement has never been done before with an axion helioscope. We will present results from these runs and briefly discuss future detector developments., Paper submitted to the proceedings of the "4th Patras Workshop on Axions, WIMPs and WISPs", DESY, Hamburg Site - Germany, 18-21 June 2008. Author affiliations are reported on the title page of the paper. In version 2: 1 affiliation change, 3 references added

Published
2009

4. Probing eV-scale axions with CAST

Author

CAST Collaboration, Arik, E., Aune, S., Autiero, D., Barth, K., Belov, A., Beltr��n, B., Borghi, S., Bourlis, G., Boydag, F. S., Br��uninger, H., Carmona, J. M., Cebri��n, S., Cetin, S. A., Collar, J. I., Dafni, T., Davenport, M., Di Lella, L., Dogan, O. B., Eleftheriadis, C., Elias, N., Fanourakis, G., Ferrer-Ribas, E., Fischer, H., Friedrich, P., Franz, J., Gal��n, J., Geralis, T., Giomataris, I., Gninenko, S., G��mez, H., Hartmann, R., Hasinoff, M., Heinsius, F. H., Hikmet, I., Hoffmann, D. H. H., Irastorza, I. G., Jacoby, J., Jakov��i��, K., Kang, D., K��nigsmann, K., Kotthaus, R., Kr��mar, M., Kousouris, K., Kuster, M., Laki��, B., Lasseur, C., Liolios, A., Ljubi��i��, A., Lutz, G., Luz��n, G., Miller, D., Morales, J., Niinikoski, T., Nordt, A., Ortiz, A., Papaevangelou, T., Pivovaroff, M. J., Placci, A., Raffelt, G., Riege, H., Rodr��guez, A., Ruz, J., Savvidis, I., Semertzidis, Y., Serpico, P., Soufli, R., Stewart, L., van Bibber, K., Villar, J., Vogel, J., Walckiers, L., Zioutas, K., Doğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, TR3959, and Belirlenecek

Subjects
Physics, Particle physics, Helioscope, Photon, 010308 nuclear & particles physics, Axions, High Energy Physics::Phenomenology, Buffer gas, Phase (waves), FOS: Physical sciences, Astronomy and Astrophysics, Coupling (probability), 01 natural sciences, High Energy Physics - Experiment, Pseudoscalar, High Energy Physics - Experiment (hep-ex), dark matter, axions, solar axions, coherent conversion, magnetic-field, search, bounds, telescope, particles, detector, photons, mass, 0103 physical sciences, Dark Matter, 010306 general physics, CERN Axion Solar Telescope, Axion, Particle Physics - Experiment
Abstract

We have searched for solar axions or other pseudoscalar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup. Whereas we previously have reported results from CAST with evacuated magnet bores (Phase I), setting limits on lower mass axions, here we report results from CAST where the magnet bores were filled with \hefour gas (Phase II) of variable pressure. The introduction of gas generated a refractive photon mass $m_\gamma$, thereby achieving the maximum possible conversion rate for those axion masses \ma that match $m_\gamma$. With 160 different pressure settings we have scanned \ma up to about 0.4 eV, taking approximately 2 h of data for each setting. From the absence of excess X-rays when the magnet was pointing to the Sun, we set a typical upper limit on the axion-photon coupling of $\gag\lesssim 2.17\times 10^{-10} {\rm GeV}^{-1}$ at 95% CL for $\ma \lesssim 0.4$ eV, the exact result depending on the pressure setting. The excluded parameter range covers realistic axion models with a Peccei-Quinn scale in the neighborhood of $f_{\rm a}\sim10^{7}$ GeV. Currently in the second part of CAST Phase II, we are searching for axions with masses up to about 1.2 eV using \hethree as a buffer gas., Comment: 18 pages, 7 figures. Revised version of the paper after referee's comments. Main changes on the gas section

Published
2008
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5. Conceptual design of BabyIAXO, the intermediate stage towards the International Axion Observatory

Author

Abeln, A., Altenm��ller, K., Arguedas Cuendis, S., Armengaud, E., Atti��, D., Aune, S., Basso, S., Berg��, L., Biasuzzi, B., Borges De Sousa, P. T. C., Brun, P., Bykovskiy, N., Calvet, D., Carmona, J. M., Castel, J. F., Cebri��n, S., Chernov, V., Christensen, F. E., Civitani, M. M., Cogollos, C., Dafn��, T., Derbin, A., Desch, K., D��ez, D., Dinter, M., D��brich, B., Drachnev, I., Dudarev, A., Dumoulin, L., Ferreira, D. D. M., Ferrer-Ribas, E., Fleck, I., Gal��n, J., Gasc��n, D., Gastaldo, L., Giannotti, M., Giomataris, Y., Giuliani, A., Gninenko, S., Golm, J., Golubev, N., Hagge, L., Hahn, J., Hailey, C. J., Hengstler, D., Henriksen, P. L., Houdy, T., Iglesias-Marzoa, R., Iguaz, F. J., Irastorza, I. G., I��iguez, C., Jakov��i��, K., Kaminski, J., Kanoute, B., Karstensen, S., Kravchuk, L., Laki��, B., Lasserre, T., Laurent, P., Limousin, O., Lindner, A., Loidl, M., Lomskaya, I., L��pez-Alegre, G., Lubsandorzhiev, B., Ludwig, K., Luz��n, G., Malbrunot, C., Margalejo, C., Marin-Franch, A., Marnieros, S., Marutzky, F., Mauricio, J., Menesguen, Y., Mentink, M., Mertens, S., Mescia, F., Miralda-Escud��, J., Mirallas, H., Mols, J. P., Muratova, V., Navick, X. F., Nones, C., Notari, A., Nozik, A., Obis, L., Oriol, C., Orsini, F., Ortiz de Sol��rzano, A., Oster, S., Pais Da Silva, H. P., Pantuev, V., Papaevangelou, T., Pareschi, G., Perez, K., P��rez, O., Picatoste, E., Pivovaroff, M. J., Poda, D. V., Redondo, J., Ringwald, A., Rodrigues, M., Rueda-Teruel, F., Rueda-Teruel, S., Ruiz-Choliz, E., Ruz, J., Saemann, E. O., Salvado, J., Schiffer, T., Schmidt, S., Schneekloth, U., Schott, M., Segui, L., Tavecchio, F., ten Kate, H. H. J., Tkachev, I., Troitsky, S., Unger, D., Unzhakov, E., Ushakov, N., Vogel, J. K., Voronin, D., Weltman, A., Werthenbach, U., Wuensch, W., and Yanes-D��az, A.

Subjects
axion: dark matter, CP violation, Beyond Standard Model, Dark matter, axion-like particles, Other experiments, axion: solar, IAXO, sensitivity, 7. Clean energy, optics, detector: design
Abstract

Journal of high energy physics 05(5), 137 (2021). doi:10.1007/JHEP05(2021)137, This article describes BabyIAXO, an intermediate experimental stage of the International Axion Observatory (IAXO), proposed to be sited at DESY. IAXO is a large-scale axion helioscope that will look for axions and axion-like particles (ALPs), produced in the Sun, with unprecedented sensitivity. BabyIAXO is conceived to test all IAXO subsystems (magnet, optics and detectors) at a relevant scale for the final system and thus serve as prototype for IAXO, but at the same time as a fully-fledged helioscope with relevant physics reach itself, and with potential for discovery. The BabyIAXO magnet will feature two 10 m long, 70 cm diameter bores, and will host two detection lines (optics and detector) of dimensions similar to the final ones foreseen for IAXO. BabyIAXO will detect or reject solar axions or ALPs with axion-photon couplings down to g$_{a��}$ ��� 1.5 �� 10$^{���11}$ GeV$^{���1}$, and masses up to m$_{a}$ ��� 0.25 eV. BabyIAXO will offer additional opportunities for axion research in view of IAXO, like the development of precision x-ray detectors to identify particular spectral features in the solar axion spectrum, and the implementation of radiofrequency-cavity-based axion dark matter setups.[graphic not available: see fulltext], Published by SISSA, [Trieste]

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