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- D. Indurthy, R. Keisler, S.E. Kopp, S. Mendoza, Z. Pavlovich, M. Proga, R.M. Zwaska
The University of Texas at Austin, Austin, Texas
- M.B. Bishai, M. Diwan, B. Viren
BNL, Upton, Long Island, New York
- A.R. Erwin, H.P. Ping, C.V. Velissaris
UW-Madison/PD, Madison, Wisconsin
- D. Harris, A. Marchionni, G. Morfin
Fermilab, Batavia, Illinois
- J. McDonald, D. Naples, D. Northacker
University of Pittsburgh, Pittsburgh, Pennsylvania
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The NuMI beamline and the MINOS experiment will study at a long baseline the possible oscillation of muon neutrinos and provide a precision measurement of the oscillation parameters. Neutrinos are produced from charged pion decays, where the pions are produced from interaction of the 120 GeV FNAL Main Injector proton beam with a graphite target. Ion chamber arrays have been built to monitor the resulting muons from pion decays, as well as remnant hadrons at the end of the NuMI decay pipe. The arrays of ion chambers measure both the intensity and lateral profile of the muon and hadron beams, allowing studies of sytematics of the neutrino beam. We will describe the design, construction, and precise calibration of the ion chamber arrays. Initial data from commissioning of the beam line and experience from long-term operations will be presented.
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