Neutron lifetime experiment using UCN storage in an 'accordion-like' trap
Abstract
The precise determination of the neutron lifetime has an impact on particle physics and cosmology. We report progress towards a measurement of the neutron lifetime using an accordion-like storage trap. Ultracold neutrons are filled in the accordion-like storage volume, and the neutron lifetime is measured by counting surviving neutrons as a function of time. Preliminary results of the storage lifetimes, obtained during the experiment done at I.L.L in 2010, are presented. Several tests and attempts to improve the storage lifetime are discussed. The analysis of the experiment done in 2011, along with the measured values of the neutron lifetime at room temperature, and measured values of the neutron lifetime at low temperatures are presented. The measured value of the neutron lifetime at low temperatures is τn =894 ± 46 s, which is consistent with the current world average value of the neutron lifetime.^
Subject Area
Physics, Low Temperature|Physics, Molecular
Recommended Citation
Ashish M Desai,
"Neutron lifetime experiment using UCN storage in an 'accordion-like' trap"
(2012).
Dissertations and Master's Theses (Campus Access).
Paper AAI3522626.
http://digitalcommons.uri.edu/dissertations/AAI3522626