  This document describes the design of the accelerator and target systems for
the AGS Super Neutrino Beam Facility. Under the direction of the Associate
Laboratory Director Tom Kirk, BNL has established a Neutrino Working Group to
explore the scientific case and facility requirements for a very long baseline
neutrino experiment. Results of a study of the physics merit and detector
performance was published in BNL-69395 in October 2002, where it was shown that
a wide-band neutrino beam generated by a 1 MW proton beam from the AGS, coupled
with a half megaton water Cerenkov detector located deep underground in the
former Homestake mine in South Dakota would be able to measure the complete set
of neutrino oscillation parameters.
  This report details the performance requirements and conceptual design of the
accelerator and the target systems for the production of a neutrino beam by a
1.0 MW proton beam from the AGS. The major components of this facility include
a new 1.2 GeV superconducting linac, ramping the AGS at 2.5 Hz, and the new
target station for 1.0 MW beam. It also calls for moderate increase, about 30%,
of the AGS intensity per pulse. Special care is taken to account for all
sources of proton beam loss plus shielding and collimation of stray beam halo
particles to ensure equipment reliability and personal safety. A preliminary
cost estimate and schedule for the accelerator upgrade and target system are
also included.
