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New solar axion search using the CERN Axion Solar Telescope with He 4 filling

  • M. Arik
  • , S. Aune
  • , K. Barth
  • , A. Belov
  • , H. Bräuninger
  • , J. Bremer
  • , V. Burwitz
  • , G. Cantatore
  • , J. M. Carmona
  • , S. A. Cetin
  • , J. I. Collar
  • , E. Da Riva
  • , T. Dafni
  • , M. Davenport
  • , A. Dermenev
  • , C. Eleftheriadis
  • , N. Elias
  • , G. Fanourakis
  • , E. Ferrer-Ribas
  • , J. Galán
  • J. A. García, A. Gardikiotis, J. G. Garza, E. N. Gazis, T. Geralis, E. Georgiopoulou, I. Giomataris, S. Gninenko, M. Gómez Marzoa, M. D. Hasinoff, D. H.H. Hoffmann, F. J. Iguaz, I. G. Irastorza, J. Jacoby, K. Jakovčić, M. Karuza, M. Kavuk, M. Krčmar, M. Kuster, B. Lakić, J. M. Laurent, A. Liolios, A. Ljubičić, G. Luzón, S. Neff, T. Niinikoski, A. Nordt, I. Ortega, T. Papaevangelou, M. J. Pivovaroff, G. Raffelt, A. Rodríguez, M. Rosu, J. Ruz, I. Savvidis, I. Shilon, S. K. Solanki, L. Stewart, A. Tomás, T. Vafeiadis, J. Villar, J. K. Vogel, S. C. Yildiz, K. Zioutas
  • Dogus University
  • Centre d' Etudes Nucléaires de Saclay (CEA-Saclay)
  • CERN
  • Russian Academy of Sciences
  • Max Planck Institute for Extraterrestrial Physics
  • University of Trieste
  • University of Zaragoza
  • The University of Chicago
  • Aristotle University of Thessaloniki
  • Demokritos National Centre for Scientific Research
  • University of Patras
  • National Technical University of Athens
  • University of British Columbia
  • Technische Universität Darmstadt
  • Goethe University Frankfurt
  • Ruder Boskovic Institute
  • University of Rijeka
  • Chem./Materials Science Directorate
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Max Planck Institute for Solar System Research

科研成果: 期刊稿件文章同行评审

70 引用 (Scopus)

摘要

The CERN Axion Solar Telescope (CAST) searches for a→γ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. Two parallel magnet bores can be filled with helium of adjustable pressure to match the x-ray refractive mass mγ to the axion search mass ma. After the vacuum phase (2003-2004), which is optimal for ma0.02eV, we used He4 in 2005-2007 to cover the mass range of 0.02-0.39 eV and He3 in 2009-2011 to scan from 0.39 to 1.17 eV. After improving the detectors and shielding, we returned to He4 in 2012 to investigate a narrow ma range around 0.2 eV ("candidate setting" of our earlier search) and 0.39-0.42 eV, the upper axion mass range reachable with He4, to "cross the axion line" for the KSVZ model. We have improved the limit on the axion-photon coupling to gaγ<1.47×10-10GeV-1 (95% C.L.), depending on the pressure settings. Since 2013, we have returned to the vacuum and aim for a significant increase in sensitivity.

源语言英语
期刊论文编号021101
期刊Physical Review D - Particles, Fields, Gravitation and Cosmology
92
2
DOI
出版状态已出版 - 28 7月 2015
已对外发布

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