The CERN Axion Solar Telescope (CAST) is an experiment in astroparticle physics to search for axions originating from the Sun. CAST uses a LHC prototype magnet with a field of B = 9.0 T in the interior of two parallel pipes of length L = 9.26 m. The magnet is mounted on a moving platform with low-background x-ray detectors on either end, allowing it to track the Sun.
The Cherenkov Telescope Array or CTA is a project to build a new generation ground-based gamma-ray instrument in the energy range extending from some tens of GeV to above 100 TeV. It is proposed as an open observatory and will consist of two arrays of IACTs, a first array at the northern hemisphere with emphasis on the study of extragalactic objects at the lowest possible energies, and a second array at the southern hemisphere, which is to cover the full energy range and concentrate on galactic sources. The physics program of CTA goes beyond high energy astrophysics into Cosmology and Fundamental Physics.
