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Harvard Neutrino Group

Harvard Neutrino Group. DoE Review August 21, 2006. Introduction. The Harvard Neutrino Group is engaged in three highly related experiments MINOS : 5 kT, magnetized iron-scintillator detector, optimized for observing n m oscillations

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Harvard Neutrino Group

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  1. Harvard Neutrino Group DoE Review August 21, 2006

  2. Introduction • The Harvard Neutrino Group is engaged in three highly related experiments • MINOS: 5 kT, magnetized iron-scintillator detector, optimized for observing nm oscillations • MIPP: A fixed-target particle production experiment whose results will improve the near-far detector comparisons in MINOS • NOnA: A proposed follow-on experiment to MINOS, off-axis 20-25 kT totally-active liquid scintillator detector, optimized for observing ne oscillations DoE Review August 21, 2006 Gary Feldman

  3. Harvard Neutrino Group • Faculty: GF • Engineers: John Oliver, Nathan Felt • Postdoc: Mayly Sanchez • Graduate Students: Joshua Boehm, Andre Lebedev, Sharon Seun, Steve Cavanaugh* DoE Review August 21, 2006 Gary Feldman

  4. MINOS Layout(Main Injector Neutrino Oscillation Search) DoE Review August 21, 2006 Gary Feldman

  5. MINOS Far Detector • 8m octagonal tracking calorimeter • 486 layers of 1 in iron plates • 4.1 cm-wide scintillator stripswith WLS fiber readout, readout from both ends • 8 fibers summed on eachPMT pixel • 25,800 m2 (6.4 acres) of active detector planes • Toroidal magnetic field<B> = 1.3 T • Total mass 5.4 kT Half of MINOS far detector DoE Review August 21, 2006 Gary Feldman

  6. MINOS Detectors Far Detector Near Detector DoE Review August 21, 2006 Gary Feldman

  7. Harvard Contributions to MINOS • Far detector front-end electronics • Contributions to the C++ framework and the development of the “Standard Reconstruction.” • Production processing on the Fermilab computer farm and data quality validation • Development of offline analysis for nm ne oscillations • MINOS positions • GF: Executive Committee • Mayly Sanchez : Farm Batch Processing Group coordinator, Validation and Monitoring Group convener, and nm ne Working Group Co-convener: DoE Review August 21, 2006 Gary Feldman

  8. MIPP ExperimentMain Injector Particle Production Experiment DoE Review August 21, 2006 Gary Feldman

  9. Why do the MIPP Experiment? • Our main interest is to reduce the uncertainty in the near-far ratio for MINOS and other oscillation experiments. • Not the same due to the line source of neutrinos. DoE Review August 21, 2006 Gary Feldman

  10. Far to Near Ratio DoE Review August 21, 2006 Gary Feldman

  11. MIPP Measurements • Unlike previous measurements, MIPP has a full acceptance. It will produce a library of produced particles. • We have taken 1.9M events with 120 GeV protons on the MINOS target. • We have also taken 20, 58, and 120 GeV secondaries on thin carbon targets and will use them to “reconstruct the MINOS (or any other carbon target). • Expect first results by the end of 2006. DoE Review August 21, 2006 Gary Feldman

  12. Harvard Contributions to MIPP • RICH detector hardware and software. • Data acquisition. • Trigger • Beamline improvements • General reconstruction and Monte Carlo programs. • MIPP Positions: • GF: Chair of the MIPP Institutional Board DoE Review August 21, 2006 Gary Feldman

  13. What is NOnA? • NOnA is an approved Fermilab experiment • 20-25 kT totally-active liquid scintillator detector • Situated 12 km off the NuMI beamline 810 km from Fermilab (in a narrow band neutrino beam around the first oscillation maximum) • Designed to be sensitive to nmne oscillations, needed for • • sin2(2q13) • • Mass ordering • • CP violating phase d DoE Review August 21, 2006 Gary Feldman

  14. Off-Axis Rationale • Both Phase 2 experiments, NOnA and T2K are sited off the neutrino beam axis. This yields a narrow band beam: • More flux and less background (ne’s from K decay and higher-energy NC events) DoE Review August 21, 2006 Gary Feldman

  15. NOnA Far Detector “Totally Active” 20 kT: 16 kT liquid scintillator 4 kT PVC 32 cells/extrusion 12 extrusions/plane 1302 planes Cell dimensions: 3.9 cm x 6 cm x 15.7m (0.15 X0 thickness) Extrusion walls: 3-4 mm outer 2-3 mm inner U-shaped 0.8 mm WLS fiber into APD 89 m 15.7m 31-plane block 15.7m Admirer DoE Review August 21, 2006 Gary Feldman

  16. 1.65 GeV neN epp0 DoE Review August 21, 2006 Gary Feldman

  17. Harvard Contributions to NOnA • Collaboration management (GF co-spokesperson) • Building the physics case for NOnA • NOnA electronics and DAQ (John Oliver project electronics engineer ) DoE Review August 21, 2006 Gary Feldman

  18. What We Know and What We Don’t Know O. Mena and S. Parke, hep-ph/0312131 DoE Review August 21, 2006 Gary Feldman

  19. 3 s Sensitivity to q13 0 DoE Review August 21, 2006 Gary Feldman

  20. Parameters Consistent witha 2% nm ne Oscillation DoE Review August 21, 2006 Gary Feldman

  21. 95% CL Resolution of the Mass Ordering DoE Review August 21, 2006 Gary Feldman

  22. 1 and 2 s Contours for Starred Point: sin2(2q13) = 0.02 DoE Review August 21, 2006 Gary Feldman

  23. Talks • Overview GF 25 min • MINOS nm ne Josh Boehm 20 min • MIPPAndre Lebedev 20 min • NOnA electronics John Oliver 15 min and DAQ DoE Review August 21, 2006 Gary Feldman

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