The LPCTrap for the measurement of the β- ν correlation in 6He
LPC-IN2P3-ENSICAEN, 6 Boulevard du Maréchal Juin, 14050, Caen Cedex, France
Accepted: 21 April 2005
Published online: 4 July 2005
The application of traps to precision measurements of the β-ν angular correlation coefficient a in nuclear β-decay is pursued by several laboratories world wide. Various nuclear transitions are addressed and different trap devices are used. At GANIL, a novel transparent Paul trap (LPCTrap) has been built downstream from the SPIRAL source to determine a in the pure Gamow-Teller decay of 6He. This transition is driven by the axial-vector interaction. The forbidden tensor interaction may be observed through a precise measurement of a. The LPCTrap consists of an RFQ-Buncher, a transparent Paul trap, and the detection system. It is currently the only facility that uses a Paul trap with a novel geometry to perform high-precision nuclear physics experiments. All the elements have been tested and meet the requirements. In this contribution we give a short status report of the project underlining the highlights achieved so far.
PACS: 23.40.Bw Weak-interaction and lepton (including neutrino) aspects – / 24.80.+y Nuclear tests of fundamental interactions and symmetries – / 29.27.Eg Beam handling; beam transport –
© Società Italiana di Fisica and Springer-Verlag, 2005