22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

The CAST experiment: status and perspectives

24 Jul 2010, 12:15
13m
Salle Maillot ()

Salle Maillot

Parallel Session Talk 11 - Particle Astrophysics and Cosmology 11 - Particle Astrophysics and Cosmology

Speaker

Esther Ferrer Ribas (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

Description

The status of the solar axion search with the CERN Axion Solar Telescope (CAST) will be discussed. Results from the first part of CAST phase II where the magnet bores were filled with 4He gas at variable pressure in order to scan ma up to 0.4 eV will be presented. 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<2.17×10^-10 GeV^-1 at 95% CL for ma<0.4 eV, the exact result depending on the pressure setting. Our search for axions with masses up to about 1.2 eV using 3He as a buffer gas is in progress in the second part of CAST phase II. Expectations for sensibilities will be given. Near future perspectives as well as more long term options for a new helioscope experiment will be evoked.

Primary author

Presentation Materials