Beam-Based Alignment of the NuMI Target Station Components at FNAL
  The Neutrinos at the Main Injector (NuMI) facility is a conventional horn-focused neutrino beam which produces muon neutrinos from a beam of mesons directed into a long evacuated decay volume. The relative alignment of the primary proton beam, target, and focusing horns affects the neutrino energy spectrum delivered to experiments. This paper describes a check of the alignment of these components using the proton beam. 
R. Zwaska, M. Bishai, S. Childress, G. Drake, C. Escobar, P. Gouffon,   D.A. Harris, J. Hylen, D. Indurthy, G. Koizumi, S. K...