The Superallowed Transition Beta-Neutrino Decay Ion Coincidence Trap (St. Benedict), currently under construction at the University of Notre Dame Nuclear Science Laboratory, aims at measuring the beta-neutrino angular correlation parameter in superallowed mixed beta decay transitions between mirror nuclei. Such measurements will allow us to improve the precision on the extraction of the Vud matrix element in these transitions. St. Benedict will take a radioactive ion beam produced by TwinSol, thermalize it in a large volume gas cell, then transport it into two separates, differentially pumped, volumes using a radiofrequency (RF) carpet and a radio-frequency quadrupole (RFQ) ion guide before injecting it in an RFQ trap to create cool ion bunches for injection into the measurement Paul trap. Results of the off-line commissioning of the gas catcher and its extraction system and the online installation will be presented.
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Presenters
Maxime Brodeur
University of Notre Dame
Authors
Maxime Brodeur
University of Notre Dame
Tan Ahn
University of Notre Dame
Dan W Bardayan
University of Notre Dame
Daniel Burdette
Argonne National Laboratory
Jason A Clark
Argonne National Laboratory
Aaron T Gallant
Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab
Driss Guillet
University of Notre Dame/ENS Paris-Saclay, ENS Paris-Saclay
Alicen M Houff
University of Notre Dame, Univerisity of Notre Dame
