Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 88, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4983578
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Funding
- Los Alamos LDRD office
- Department of Energy
- National Science Foundation [1307426, 1553861]
- DOE Low Energy Nuclear Physics [DE-FG02-97ER41042]
- U.S. Department of Energy [DE-AC05-00OR22725]
- United States Government
- Direct For Mathematical & Physical Scien
- Division Of Physics [1307426, 1306997] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1615153, 1506459, 1553861] Funding Source: National Science Foundation
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In this paper, we describe a new method for measuring surviving neutrons in neutron lifetime measurements using bottled ultracold neutrons (UCN), which provides better characterization of systematic uncertainties and enables higher precision than previous measurement techniques. An active detector that can be lowered into the trap has been used to measure the neutron distribution as a function of height and measure the influence of marginally trapped UCN on the neutron lifetime measurement. In addition, measurements have demonstrated phase-space evolution and its effect on the lifetime measurement. (C) 2017 Author(s).
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