Conceptual design for the technical components of the neutrino beam for the main injector (NuMI)

The design is presented of a beamline which uses 120 GeV protons from the Fermilab Main Injector to produce a neutrino beam which will be used for experiments located on the Fermilab site and 730 km away at the Soudan Mine in Minnesota. Section 1 of this document presents a relatively non-technical overview of the entire project. Section 2 describes the experimental constraints and goals which guide the beamline design. Section 3 presents the technical details of the design.