Background Studies for the Neutral Current Detector Array in the Sudbury   Neutrino Observatory
  An array of 3He-filled proportional counters will be used in the Sudbury Neutrino Observatory to measure the neutral-current interaction of neutrinos and deuterium. We describe the backgrounds to this detection method. 
K.M. Heeger, P.J. Doe, S.R. Elliott, R.G.H. Robertson, M.W.E. Smith,   T.D. Steiger, J.F. Wilkerson