Axion Search by Laser-based Experiment OSQAR

Miroslav Sulc (1) , Pierre Pugnat (2) , Rafik Ballou (3) , Guy Deferne (4) , Lionel Duvillaret (5) , Lucie Flekova (6) , Michael Finger (6) , Michael Finger Jr. (6) , Jan Hošek (7) , Thomas Husek (6) , Rémy Jost (8) , Miroslav Kral (7) , Štěpán Kunc (1) , Karolina Macuchova (7) , Krzysztof A. Meissner (9) , Jérôme Morville (10, 11) , Daniele Romanini (8) , Matthias Schott (4) , Andrzej Siemko (4) , Miloslav Slunecka (6) , Guy Vitrant (5) , Jozef Zicha (7)

1 Technical University of Liberec
2 LNCMI-G - Laboratoire national des champs magnétiques intenses - Grenoble
3 NEEL - MagSup - Magnétisme et Supraconductivité
4 CERN - European Organization for Nuclear Research
5 IMEP-LAHC - Institut de Microélectronique, Electromagnétisme et Photonique - Laboratoire d'Hyperfréquences et Caractérisation
6 UK - Univerzita Karlova [Praha, Česká republika] = Charles University [Prague, Czech Republic]
7 CTU - Czech Technical University in Prague
8 LSP - Laboratoire de Spectrométrie Physique
9 Institute of Theoretical Physics [Warsaw]
10 LASIM - Laboratoire de Spectrométrie Ionique et Moléculaire
11 ILM - Institut Lumière Matière [Villeurbanne]

Laser-based experimentOSQAR in CERN is aimed to the search of the axions by twomethods. The photon regeneration experiment is using two LHC dipole magnets of the length 14.3 m and magnetic field 9.5 T equipped with an optical barrier at the end of the first magnet. It looks as light shining through the wall. No excess of events above the background was detected at this arrangement. Nevertheless, this result extends the exclusion region for the axion mass. The second method wants to measure the ultra-fine Vacuum Magnetic Birefringence for the first time. An optical scheme with electro-optical modulator has been proposed, validated and subsequently improved. Cotton-Mouton constant for air was determined in this experiment setup.

Domaines: Physique Générale [physics.gen-ph]

Miroslav Sulc, Pierre Pugnat, Rafik Ballou, Guy Deferne, Lionel Duvillaret, et al.. Axion Search by Laser-based Experiment OSQAR. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013, 718, pp.530. ⟨10.1016/j.nima.2012.11.107⟩. ⟨hal-00963933⟩