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Neutrino Physics Opportunities for Fermilab Steering Group 6/12/07

Neutrino Physics Opportunities for Fermilab Steering Group 6/12/07. Andy Lankford UC Irvine. NPG: Presentations. 5/10 Gene Beier: NuSAG Status Report to NSAC 5/14 Peter Meyers: NuSAG

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Neutrino Physics Opportunities for Fermilab Steering Group 6/12/07

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  1. Neutrino Physics Opportunitiesfor Fermilab Steering Group 6/12/07 Andy Lankford UC Irvine

  2. NPG: Presentations • 5/10 Gene Beier: NuSAG Status Report to NSAC • 5/14 Peter Meyers: NuSAG • 5/22 Henryk Piekarz: A Double, 480 GeV, Fast Cycling Proton Accelerator for Production of Neutrino Beams at Fermilab • 5/22 Janet Conrad: An Ultra-High Statistics Muon Neutrino Scattering Experiment at the TeVatron • 5/29 Mats Lindroos: Beta-beams • 5/31 Bonnie Fleming: Ideas on LArTPC Detectors • 5/31 Kate Scholberg: Neutrino Physics with a Stopped Pion Source

  3. Long-Baseline Oscillation Experiments • Flagship of neutrino physics • theta_13, mass hierarchy, CP violation • NuSAG is addressing • Report to HEPAP expected in mid-July • NuSAG is relying heavily on BNL-FNAL study • Examining options for next generation: • Off-axis Beam vs. Wide-band Beam • Liquid argon TPC vs. Water cerenkov • Experiments require as many neutrino interactions as possible • Neutrino flux • Detector mass • Next generation would benefit more from an order of magnitude improvement than a factor of two improvement • Possible conclusion: Need results from current generation before finalizing next generation • NPG is to build upon NuSAG report

  4. Double 480 GeV Proton AcceleratorH. Piekarz • Two super-ferric rings in TeVatron • Designed for high beam power • Note: current booster cannot provide current for more than 4.8 MW • Note: power via intensity rather than energy preferred • Produces high energy neutrinos • Needs very long baselines • Energies much higher than optimum for U.S.-based experiments • High energy comes with high intrinsic neu_e bkgd. • Not rated highly by NPG

  5. Neutrino Scattering using TeVatron BeamJ. Conrad • Deep inelastic scattering • 100x NuTeV • 50k neu_mu + e elastic scatters • Needs high statistics • 3x NuTeV fiducial volume • 20x NuTeV proton intensity (5E19 POT/yr) • 2x NuTeV running period • Unique precision electroweak experiment • Complements direct BSM exploration of LHC • NPG viewed physics opportunity favorably

  6. Beta-beamsM. Lindroos • Presentation heard by FSG • Probably for far future • Akin to neutrino factory • Not examined carefully for roadmap

  7. LArTPC DetectorsB. Fleming • Roadmap from R&D to multi-kiloton • Includes 50-1000 ton experiments on site • Several options mentioned • Cross-sections, fine-grained near-detector for NOvA • microBooNE: 50T fiducial • Investigate MiniBooNE low-E discrepancy • Physics program now + LAr R&D for future program • Using existing beams • NPG found above synergy very enticing

  8. Physics with Stopped Pion SourceK. Scholberg • Based on SNS proposal • Stopped pion produces 3 low-energy neus • Physics: • Cross-sections for astrophysics (SN physics) • Coherent elastic neu-nucleus scattering • (ambitious) • Sterile neutrino oscillations • Requires ~1 MW • NPG found interesting

  9. Facilities for Neutrino Beams - 1 #2 High Intensity Proton Sources • Should include 8 GeV beams • Supports: • Oscillation program • LArTPC experiments onsite • Stopped pion source #7 Proton sources by reconfiguring FNAL collider complex • Similar to above; supports same physics #8 Proton sources with New Booster + 1 GeV Linac • Similar to above; supports same physics #9 Double, 480 GeV, Fast Cycling Proton Accelerator • Supports oscillation program, but not well • Competes with other uses of TeVatron

  10. Facilities for Neutrino Beams - 2 #10 1 TeV protons from TeVatron • Supports precision deep-inelastic scattering program • Could also measure cross-sections with LArTPC • Competes with other uses of TeVatron #13 Beta-beams • Supports future oscillation program • In post-ILC era • Neutrino Factories (should be on list) • Supports future oscillation program • In post-ILC era

  11. Facilities for Neutrino Beams - 3 • Summary: • Interesting for Neutrino Physics: Mid-term #2 High Intensity Proton Sources #7 Proton sources by reconfiguring FNAL complex #8 Proton sources with New Booster + 1 GeV Linac #10 1 TeV protons from TeVatron • Interesting for Neutrino Physics: Long-term #13 Beta-beams • Neutrino Factories • Not particularly interesting for Neutrino Physics #9 Double, 480 GeV, Fast Cycling Proton Accelerator • More protons are better • Competition with other programs (proton economics0 • No clear breakpoints in required intensities • Could foresee using >1 MW at low energy (e.g. 8 GeV) • For fixed neutrino flux, NuMI energy may be higher than optimum

  12. FY09 Opportunities • Possible investment ideas for FY09 based on neutrino presentations • LArTPC R&D • E.g. towards neu_e monitor for NuMI • Hall for near-detector in NuMI line • TeVatron neutrino line

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