The LPCTrap experiment: measurement of the β-ν angular correlation in 6He+ decay using a transparent Paul trap

The LPCTrap experiment is devoted to the precise measurement of the beta-nu angular correlation parameter, alpha(beta nu), in the pure Gamow-Teller decay of He-6(+). This experiment is motivated by the search of the presence of tensor type contributions in the weak interaction. The radioactive source is confined in a transparent Paul trap installed at LIRAT, the low energy beam line of the SPIRAL facility. The beta-nu correlation is studied by measuring the time of flight of the recoil ions detected in coincidence with the beta particles. During the last experiment, a total of 4 x 10(6) coincidence events have been recorded which would enable to determine the coefficient with a statistical uncertainty of 0.5%. The status of the analysis is presented in this contribution.