Paper |
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RPAT044 |
Segmented Foil SEM Grids at Fermilab
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2821 |
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- S.E. Kopp, D. Indurthy, Z. Pavlovich, M. Proga, R.M. Zwaska
The University of Texas at Austin, Austin, Texas
- B.B. Baller, S.C. Childress, R. Ford, D. Harris, C.L.K. Kendziora, C.D. Moore, G. R. Tassotto
Fermilab, Batavia, Illinois
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Segmented Secondary Emission Monitors (SEM's) will be used to monitor the extracted 120 GeV proton beam for the NuMI facility at Fermilab. The SEM's are constructed from 5 micrometer thick Ti foils. The chambers have 10 cm beam aperture, and the foils are designed to result in 4·10-6 fractional beam loss when inserted in the beam. The foil strips have dynamic tensioning to withstand the heating from the 400kW proton beam. Results from prototype beam tests as well as from commissioning in the NuMI line will be presented.
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RPPT072 |
Ion Chamber Arrays for the NuMI Beam at Fermilab
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3892 |
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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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FOAC004 |
The Numi Neutrino Beam At Fermilab
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- S.E. Kopp
The University of Texas at Austin, Austin, Texas
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The Neutrinos at the Main Injector (NuMI) is a conventional neutrino beam facility which will use the intense 120 GeV proton beam from the Fermilab Main Injector accelerator. The facility is envisaged to service a variety experiments, in particular the already-constructed MINOS long baseline oscillation experiment, and the proposed NOvA experiment to observe muon neutrino to electron neutrino oscillations. Summarized will be the design of the primary and secondary beam focusing systems, instrumentation to validate the neutrino beam intensity, direction, and energy spectrum, and considerations for coping with the 0.4 MWatt MI beam. The beam line will be commissioned December, 2004, through February, 2005, whereupon operations may begin. Data from the commissioning and experience from first operations will be presented. Further, the suitability of the facility for accepting beam from a proposed 2MW proton driver is discussed.
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FPAE022 |
Cycle-to-Cycle Extraction Synchronization of the Fermilab Booster for Multiple Batch Injection to the Main Injector
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1802 |
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- R.M. Zwaska, S.E. Kopp
The University of Texas at Austin, Austin, Texas
- W. Pellico
Fermilab, Batavia, Illinois
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We report on a system to ensure cycle-to-cycle synchronization of beam extraction from the Fermilab Booster accelerator to the Main Injector. Such synchronization is necessary for multiple batch operation of the Main Injector for the Run II upgrade of anti-proton production using slip-stacking in the Main Injector, and for the NuMI (Neutrinos at the Main Injector) neutrino beam. To perform this task, a system of fast measurement and feedback is used to control the longitudinal progress of the Booster beam throughout its acceleration period by manipulation of the transverse position maintained by the low-level radio frequency system.
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