S3^3 targets monitoring with an electron gun

International audienceThe monitoring of targets under irradiation was investigated using a 20 keV electron beam. An integrated and automated electron beam deflection was developed allowing a monitoring over the whole surface of target materials. Thus, local defects could be identified on-line during an experiment performed at GANIL involving different materials irradiated with a focused krypton beam at 10.5 MeV/u. Performances of this target monitoring system are presented in this paper

Upgrade of the SPIRAL identification station for high-precision measurements of nuclear β decay

The low-energy identification station at SPIRAL (Système de Production d'Ions Radioactifs Accélérés en Ligne) has been upgraded for studying the β decays of short-lived radioactive isotopes and to perform high-precision half-life and branching-ratio measurements for superallowed Fermi and isospin T=1/2 mirror β decays. These new capabilities, combined with an existing Paul trap setup for measurements of β-ν angular-correlation coefficients, provide a powerful facility for investigating fundamental properties of the electroweak interaction through nuclear β decays. A detailed description of the design study, construction, and first results obtained from an in-beam commissioning experiment on the β+ decays 14 O and 17F is presented

High intensity targets stations for S3

International audienceIn the framework of the SPIRAL2 project atGANIL, the Super-Separator-Spectrometer (S3) is dedicatedto experiments using the very high intensity stablebeams ([10 plA) delivered by the superconducting linearaccelerator up to 14.5 A.MeV. Specific target stations arerequired to sustain these unprecedented beam intensities. Aprototype target station for actinides was designed andmanufactured, which main characteristics are described inthis paper. In order to commission this system and checkthe behavior of target materials, preliminary tests with 7.7A.MeV 129Xe beams were performed at 100 pnA. Theresults of these tests are presented here