The Beta-decay Paul Trap is an open-geometry, linear trap used to measure the decays of 8Li and 8B to search for a tensor contribution to the weak interaction. In the latest 8Li measurement of Burkey et al. (2022), β scattering was the dominant experimental systematic uncertainty. The Beta-decay Paul Trap Mk IV reduces the prevalence of β scattering by a factor of 4 through a redesigned electrode geometry and the use of glassy carbon and graphite as electrode materials. The trap has been constructed and successfully commissioned with 8Li in a new data campaign that collected 2.6 million triple coincidence events, an increase in statistics by 30% with 4 times less β scattering compared to the previous 8Li data set.
@article{arxiv.2311.00723,
title = {The Beta-decay Paul Trap Mk IV: Design and commissioning},
author = {L. Varriano and G. Savard and J. A. Clark and D. P. Burdette and M. T. Burkey and A. T. Gallant and T. Y. Hirsh and B. Longfellow and N. D. Scielzo and R. Segel and E. J. Boron and M. Brodeur and N. Callahan and A. Cannon and K. Kolos and B. Liu and S. Lopez-Caceres and M. Gott and B. Maaß and S. T. Marley and C. Mohs and G. E. Morgan and P. Mueller and M. Oberling and P. D. O'Malley and W. S. Porter and Z. Purcell and D. Ray and F. Rivero and A. A. Valverde and G. L. Wilson and R. Zite},
journal= {arXiv preprint arXiv:2311.00723},
year = {2023}
}