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Title: aCORN: An experiment to measure the electron-antineutrino correlation coefficient in free neutron decay

Here, we describe an apparatus used to measure the electron-antineutrino angular correlation coefficient in free neutron decay. This apparatus employs a novel measurement technique in which the angular correlation is converted into a proton time-of-flight asymmetry that is counted directly, avoiding the need for proton spectroscopy. We present details of the method, apparatus, detectors, data acquisition, and data reduction scheme, along with a discussion of the important systematic effects.
ORCiD logo [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [5] ;  [4] ;  [4] ; ORCiD logo [2] ;  [2] ; ORCiD logo [4] ; ORCiD logo [1] ;  [6] ; ORCiD logo [4] ; ORCiD logo [2] ;  [2] ;  [7] ;  [2] ;  [7] ;  [4] more »; ORCiD logo [1] ;  [4] ;  [4] ;  [8] « less
  1. Hamilton College, Clinton, NY (United States). Physics Dept.
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
  3. Univ. of Sussex, Brighton (United Kingdom)
  4. Tulane Univ., New Orleans, LA (United States). Dept. of Physics and Engineering Physics
  5. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  6. DePauw Univ., Greencastle, IN (United States)
  7. Indiana Univ., Bloomington, IN (United States). CEEM
  8. Harvard Univ., Cambridge, MA (United States). Physics Dept.
Publication Date:
Report Number(s):
Journal ID: ISSN 0034-6748
Grant/Contract Number:
AC52-06NA25396; SC0014148
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 88; Journal Issue: 8; Journal ID: ISSN 0034-6748
American Institute of Physics (AIP)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC); National Science Foundation (NSF)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; fundamental symmetries; neutron decay; beta decay; angular correlation
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1373447