A new method for measuring the neutron lifetime using an in situ neutron detector
Journal Article
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· Review of Scientific Instruments
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- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Department of Physics, Indiana University, Bloomington, Indiana 47408, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Triangle Universities Nuclear Laboratory, North Carolina State University, Raleigh, North Carolina 27695, USA
- Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
- California Institute of Technology, Pasadena, California 91125, USA
- Department of Physics, Tennessee Tech University, Cookeville, Tennessee 38505, USA
- Department of Physics, DePauw University, Greencastle Indiana 46135-0037, USA
- Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
- Joint Institute for Nuclear Research, Dubna, Moscow Region 141980, Russia
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA, Triangle Universities Nuclear Laboratory, North Carolina State University, Raleigh, North Carolina 27695, USA
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.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
- Grant/Contract Number:
- AC05-00OR22725; FG02-97ER41042; AC52-06NA25396
- OSTI ID:
- 1361895
- Alternate ID(s):
- OSTI ID: 1361319; OSTI ID: 1363969; OSTI ID: 1364545
- Report Number(s):
- LA-UR-16-27352; RSINAK; 10.1063/1.4983578
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Vol. 88 Journal Issue: 5; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 11 works
Citation information provided by
Web of Science
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