Speaker
Michaël Tandecki
(Inst. voor Kern- en Stralingsfysica - Katholieke Universiteit Le)
Description
We present in detail the status of the WITCH experiment (Weak Interaction Trap for Charged particles). The primary aim is to investigate exotic weak currents in nuclear beta decay by measuring a recoil ion spectrum and deriving the beta neutrino angular correlation coefficient from its shape. At the end of the year 2006, we succeeded for the first time in measuring a recoil ion spectrum using 124In. The data have, in the meantime, been thoroughly analysed and the charge state distribution of the recoiling ions has been derived from it. In 2007 a lot effort has been made to improve the precision of the experiment; one of the topics in this respect was the improvement of the Penning traps. A direct result of this is a significant increase in the mass resolution, which is useful to remove isobaric contamination; currently a mass resolution of 200,000-300,000 can be routinely achieved in test conditions.
Primary author
Michaël Tandecki
(Inst. voor Kern- en Stralingsfysica - Katholieke Universiteit Le)
