We describe an apparatus used to measure the electron-antineutrino angular correlation coefficient in free neutron decay. The 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. Details of the method, apparatus, detectors, data acquisition, and data reduction scheme are presented, along with a discussion of the important systematic effects.
@article{arxiv.1701.05184,
title = {aCORN: an experiment to measure the electron-antineutrino correlation coefficient in free neutron decay},
author = {B. Collett and F. Bateman and W. K. Bauder and J. Byrne and W. A. Byron and W. Chen and G. Darius and C. DeAngelis and M. S. Dewey and T. R. Gentile and M. T. Hassan and G. L. Jones and A. Komives and A. Laptev and M. P. Mendenhall and J. S. Nico and G. Noid and H. Park and E. J. Stephenson and I. Stern and K. J. S. Stockton and C. Trull and F. E. Wietfeldt and B. G. Yerozolimsky},
journal= {arXiv preprint arXiv:1701.05184},
year = {2017}
}