T
T. Dafni
Researcher at University of Zaragoza
Publications - 54
Citations - 3795
T. Dafni is an academic researcher from University of Zaragoza. The author has contributed to research in topics: Axion & CERN Axion Solar Telescope. The author has an hindex of 30, co-authored 54 publications receiving 3167 citations. Previous affiliations of T. Dafni include Technische Universität Darmstadt & Estácio S.A..
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Journal ArticleDOI
New CAST Limit on the Axion-Photon Interaction
Vassilis Anastassopoulos,S. Aune,K. Barth,A. Belov,Heinrich Bräuninger,Giovanni Cantatore,J. M. Carmona,J. F. Castel,Serkant Ali Cetin,Finn Erland Christensen,J. I. Collar,T. Dafni,M. Davenport,Todd A. Decker,Alexander Dermenev,Klaus Kurt Desch,C. Eleftheriadis,Georgios Fanourakis,E. Ferrer-Ribas,H. Fischer,J. A. Garcia,A. Gardikiotis,J. G. Garza,Evangelos Gazis,T. Geralis,Ioannis Giomataris,Sergei Gninenko,C. J. Hailey,M. D. Hasinoff,Dieter H. H. Hoffmann,F.J. Iguaz,I. G. Irastorza,Anders Clemen Jakobsen,Joachim Jacoby,Krešimir Jakovčić,Jochen Kaminski,Marin Karuza,Nenad Kralj,Milica Krčmar,Sofia Kostoglou,Ch. Krieger,Biljana Lakić,J. M. Laurent,A. Liolios,Ante Ljubičić,G. Luzón,M. Maroudas,L. Miceli,S. Neff,I. Ortega,T. Papaevangelou,K. Paraschou,Michael J. Pivovaroff,Georg G. Raffelt,M. Rosu,J. Ruz,E. Ruiz Chóliz,I. Savvidis,Søren Schmidt,Yannis K. Semertzidis,Sami K. Solanki,L. Stewart,Theodoros Vafeiadis,Julia Vogel,S. C. Yildiz,Konstantin Zioutas +65 more
TL;DR: The axion-photon coupling strength of the CERN Axion Solar Telescope (CAST) was shown to be at least 0.02$ eV in the first vacuum phase (2003-2004) with low-background x-ray detectors and a new xray telescope as mentioned in this paper.
Journal ArticleDOI
Probing eV-scale axions with CAST
E. Arik,S. Aune,D. Autiero,K. Barth,A. Belov,B. Beltrán,B. Beltrán,S. Borghi,S. Borghi,G. Bourlis,F. S. Boydag,H. Bräuninger,J. M. Carmona,S. Cebrián,Serkant Ali Cetin,J. I. Collar,T. Dafni,M. Davenport,L. Di Lella,O.B. Dogan,C. Eleftheriadis,N. Elias,Georgios Fanourakis,E. Ferrer-Ribas,H. Fischer,Peter Friedrich,J. Franz,Javier Galan,Theodoros Geralis,Ioannis Giomataris,S. Gninenko,Hector Gomez,R. Hartmann,M. D. Hasinoff,F. H. Heinsius,F. H. Heinsius,I. Hikmet,Dieter H. H. Hoffmann,I. G. Irastorza,J. Jacoby,Krešimir Jakovčić,D. Kang,D. Kang,K. Königsmann,R. Kotthaus,Milica Krčmar,Konstantinos Kousouris,Markus Kuster,Biljana Lakić,C. Lasseur,A. Liolios,Ante Ljubičić,Gerhard Lutz,G. Luzón,David Miller,J. Morales,T. O. Niinikoski,A. Nordt,A. Ortiz,T. Papaevangelou,Michael J. Pivovaroff,A. Placci,Georg G. Raffelt,H. Riege,H. Riege,A Rodríguez,J. Ruz,I. Savvidis,Yannis K. Semertzidis,Yannis K. Semertzidis,Pasquale D. Serpico,Pasquale D. Serpico,Regina Soufli,L. Stewart,K. van Bibber,J.A. Villar,Julia Vogel,L. Walckiers,Konstantin Zioutas,Konstantin Zioutas +79 more
TL;DR: In this paper, the authors reported results from CAST with evacuated magnet bores (phase I), setting limits on lower mass axions, and they also reported results of CAST Phase II, where the magnetbores were filled with 4He gas (phase II) of variable pressure.
Journal ArticleDOI
Probing new physics models of neutrinoless double beta decay with SuperNEMO
R. Arnold,C. Augier,J. Baker,A. S. Barabash,A. Basharina-Freshville,M. Bongrand,V.B. Brudanin,A. J. Caffrey,S. Cebrián,A. Chapon,E. Chauveau,T. Dafni,Frank F. Deppisch,J. S. Díaz,Dominique Durand,V. Egorov,J. J. Evans,R. Flack,K-I. Fushima,I. García Irastorza,X. Garrido,Haley Louise Gomez,B. Guillon,A. Holin,K. Holy,J. J. Horkley,Ph. Hubert,C. Hugon,F.J. Iguaz,Nobuhiro Ishihara,C. M. Jackson,S. Jullian,M. Kauer,O.I. Kochetov,S. I. Konovalov,V.E. Kovalenko,V.E. Kovalenko,T. Lamhamdi,Karol Lang,Guillaume Lutter,G. Luzón,F. Mamedov,Ch. Marquet,F. Mauger,F. Monrabal,A. Nachab,I. Nasteva,Igor Nemchenok,C. H. Nguyen,Masaharu Nomachi,F. Nova,H. Ohsumi,R. B. Pahlka,F. Perrot,F. Piquemal,Pavel P. Povinec,B. Richards,J. S. Ricol,C. L. Riddle,Alicia Rodríguez,Ruben Saakyan,X. Sarazin,J. K. Sedgbeer,Luis M. Serra,Yu. Shitov,L. Simard,Fedor Šimkovic,S. Söldner-Rembold,I. Stekl,C. S. Sutton,Y. Tamagawa,Juergen Thomas,V. V. Timkin,V.I. Tretyak,Vl. I. Tretyak,V. I. Umatov,I. Vanyushin,R. Vasiliev,V. Vasiliev,V. Vorobel,D. Waters,N. Yahlali,A. Žukauskas +82 more
TL;DR: The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double beta decay experiment SuperNEMO is discussed in this article.
Journal ArticleDOI
Search for sub-eV mass solar axions by the CERN Axion Solar Telescope with 3He buffer gas.
M. Arik,S. Aune,K. Barth,A. Belov,S. Borghi,Heinrich Bräuninger,Giovanni Cantatore,J. M. Carmona,Serkant Ali Cetin,J. I. Collar,T. Dafni,M. Davenport,C. Eleftheriadis,N. Elias,C. Ezer,Georgios Fanourakis,E. Ferrer-Ribas,Peter Friedrich,Javier Galan,J. A. Garcia,A. Gardikiotis,Evangelos Gazis,T. Geralis,I. Giomataris,Sergei Gninenko,Hector Gomez,E. Gruber,T. Guthörl,Raimo Hartmann,F. Haug,M. D. Hasinoff,Dieter Hoffmann,F.J. Iguaz,I. G. Irastorza,Joachim Jacoby,Krešimir Jakovčić,Marin Karuza,K. Königsmann,Rainer Kotthaus,Milica Krčmar,Markus Kuster,Biljana Lakić,J. M. Laurent,A. Liolios,Ante Ljubičić,V. Lozza,G. Lutz,G. Luzón,J. Morales,T. O. Niinikoski,A. Nordt,T. Papaevangelou,M. J. Pivovaroff,Georg G. Raffelt,Timur Rashba,H. Riege,Adriane De Assis Lawisch Rodriguez,M. Rosu,J. Ruz,I. Savvidis,P. S. Silva,Sami K. Solanki,L. Stewart,A. Tomás,M. Tsagri,K. van Bibber,Theodoros Vafeiadis,José Villar,Julia Vogel,S. C. Yildiz,Konstantin Zioutas +70 more
TL;DR: From the absence of excess x rays when the magnet was pointing to the Sun, the typical upper limit on the axion-photon coupling of g(aγ)≲2.3×10(-10) GeV(-1) at 95% C.L. is set.
Journal ArticleDOI
Development and performance of Microbulk Micromegas detectors
S. Andriamonje,David Attié,E. Berthoumieux,Marco Calviani,P. Colas,T. Dafni,Georgios Fanourakis,E. Ferrer-Ribas,Javier Galan,T. Geralis,A. Giganon,Ioannis Giomataris,A. Gris,C Guerrero Sanchez,F. Gunsing,F.J. Iguaz,I. G. Irastorza,R. De Oliveira,T. Papaevangelou,J. Ruz,I. Savvidis,A Teixera,A. Tomás +22 more
TL;DR: In this article, a new Micromegas manufacturing technique, based on kapton etching technology, has been developed recently, resulting in further improvement of the characteristics of the detector, such as uniformity and stability.