Study of the Backgrounds for the Search for Proton Decay to 10^35 Y at   the WIPP Site with the LANNDD Detector
  We briefly describe the LANNDD 70-kT liquid argon TPC proposal for the WIPP underground facility at Carlsbad, New Mexico. We, then, identify the key backgrounds for the search for p -> K+ nu_bar to 10^35 years lifetime. The most serious non-neutrino background is due to high-energy neutrons producing strange particles in the detector. We show that this can be reduced to an acceptable level by appropriate fiducial volume cuts. 
David B. Cline, Kevin Lee, Youngho Seo, and Peter F. Smith