Abstract
The Superallowed Transition BEta NEutrino Decay Ion Coincidence Trap (St. Benedict) aims to conduct precision tests of the standard model by allowing for a determination of the Fermi to Gamow–Teller mixing ratio for many mirror transitions. St. Benedict will include a gas cell, a differentially-pumped extraction system, a radio-frequency (RF) cooler and buncher, and a Paul trap where the measurement will take place. The extraction system will include a first section housing a RF carpet at a pressure of around 3 mbar, followed by a second section housing a radio-frequency quadrupole (RFQ) ion guide at a pressure of 2×10−3 mbar. Transport efficiency of potassium ions using the RF carpet in static gas was determined to be above 90% using the ion surfing method after optimizing the potentials applied to various electrodes.
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