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Long Baseline Neutrinos

Long Baseline Neutrinos. A.W., G. Barr, D. Wark R. Guenette, A. Vacheret. Content. Introduction Our Activities in the Past MINOS, T2K, LBNE, HyperK MARS & SOLID UK & World Situation Oxford Strategy Plans for the Future T2K HyperK LBNF 35t prototype, CERN test beam,

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Long Baseline Neutrinos

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  1. Long Baseline Neutrinos A.W., G. Barr, D. Wark R. Guenette, A. Vacheret

  2. Content • Introduction • Our Activities in the Past • MINOS, T2K, LBNE, HyperK • MARS & SOLID • UK & World Situation • Oxford Strategy • Plans for the Future • T2K • HyperK • LBNF • 35t prototype, CERN test beam, • LA1-ND, MicroBooNE • Generic R&D

  3. MINOS • No funding on past CG • Additional resources from STFC & FNAL • Phased withdrawal • Recent results • ToF measurement • Complete disappearance measurement • Sterile Neutrinos • Nominal involvement • No further activities planned • Academics • Barr (5%) & Weber (5%)

  4. MINOS Physics Results Neutrino Speed

  5. T2K • Main activity of the group • Hardware (with RAL) • DAQ operational support & Experts (conv: Barr) • Electronics support & experts (conv: Weber) • Physics • Determining π0 BG (conv: Vacheret, O’Keeffe) • Cross section measurements (conv: Weber) • Disappearance measurement • Personnel • Ac: Barr, Wark, Weber; • Fellow: Vacheret • RA: Dewhurst, Lu (vice O’Keeffe) • Students: Waldron, Dealtry, Smith, Williamson, Jacob, Duffy, Shah, Dolan, Coplowe, …

  6. T2K Results Smith/Dewhurst: Use of off-axis spectrum change to measure pion/kaon production Williamson/Jacob: π0 production first complete result of a very challenging physics measurement

  7. νμ Disappearance Dealtry: PRL 112, 181801 (2014) Uncertainties indicate 68% confidence intervals obtained with Feldman-Cousins unified approach

  8. T2K Results

  9. LBNO, LBNE/F & HyperK • LBNO • European design study • Evaluating sites and detector technologies in Europe • Finished! • Is (probably) evolving into LBNF • Oxford Founding members of LBNE & HyperK • LBNE • US DoE project manager for DAQ (Barr) • Cosmic ray simulation (de Jong) • HyperK • DAQ (Barr) • Sensitivity (Shah) • No dedicated effort • Bid under PPRP review

  10. MARS & SoLi∂ • Technology development & short-baseline oscillations, derived from MINOS/T2K technology • MARS • Radiation detection • Corporation with UK company (Kromek) to develop handheld/backpack detector for neutron detection • STFC KE funding • SoLi∂ • Short baseline oscillation experiment (B, F, UK) • Vacheret is spokesperson • H2020 and PRD funding pending • partially funded in B & F • Personnel • Ac: Vacheret, Weber • RA: Ryder, (Scovell), Ihantola • EEng: Baird

  11. The World Scene • Neutrino physics high priority internationally • European Strategy for PP • P5 report in the US • HyperK & J-PARC beam upgrade • Major projects on MEXT long-list for future projects • Expect decision to go ahead in next 2 years • UK major player in large international collaboration • LBNF • P5 recommended LBL Neutrino Facility as highest priority for the domestic program • Future of Fermilab is tied to LBNF • Make it a truly international endeavour • Funding agencies and members of LBNE and LBNO are forming new collaboration/project as we speak

  12. UK Strategy • Exploitation • T2K for next ~ 5 years • Submitted SoI and proposal to position ourselves for major contribution to either HyperK and LBNF • 3 year preparatory phase • Several 10s of M£ over 10 years later • Push for 2 experiments • 10 + 10 = 14 institutions across the UK • Exploit synergies between experiments • Beam / targetry • DAQ • Near detectors

  13. Oxford Strategy • Position ourselves to play leading role whatever happens • Very active in LBNF and HyperK proposal • DAQ WP leader in both (Barr) • LBNF UK project manager (Weber) • Near Detector studies (LBNF WP manager: Weber) • HyperK UK co-leader (Wark) • Develop skills and expertise • 35 ton LAr prototype • CERN LAr test beam (aka WA105) • 1 kton H2O prototype • Don’t wait for physics in 10+ years • Exploit T2K • LAr Data analysis with MicroBooNE/LAr1-ND

  14. Activities on T2K • Background • Running for the next 5 years, mix of nu and anti-nu • Physics • Oscillation & cross sections • Hardware • DAQ & electronics support • Leadership • Electronics, DAQ, near detector • EC, UK spokesperson • Manpower • Ac: Barr, Wark, Weber • RAs: Dewhurst, Lu • Students essential to exploit physics

  15. Future Sensitivity

  16. Physics • Need more sensitive experiments • HyperK • H2O-Cherenkov, 1 Mton, 300 km baseline • 800 MeV neutrinos • No matter effect • Massive statistics • 750 kW beam power • LBNF • LAr, 40 kton, 1300 km baseline • 1000-6000 MeV neutrinos • Moderate matter effects • High resolution detector • 1.0  2.2 MW beam power • Both are needed to over-constrain neutrino-mixing

  17. Physics M. Bass

  18. Activities on LBNF • LBNF is not a single experiment • UK program that has several components to build up the capability and leadership • Main (LBNE) experiment • 35t prototype at Fermilab • MicroBooNE & LAr1-ND • CERN test beam (aka WA105) • Complemented by generic LAr R&D (Not part of CG) • Optical readout of LAr TPC @ RAL (Gunette/Bass)

  19. Activities on HyperK • UK is one of the largest international collaborators • Oxford interests • DAQ • Hardware architecture • Physics studies • Near Detector • Reduce Systematics

  20. DAQ (HyperK) • High energy events are easy • physics study of low E events to overcome combinatorial background (Dewhurst et al.) • Develop architecture in about 9 months • including info from physics studies • Use experience from LBNF 35t DAQ

  21. DAQ (LBNF) • LBNF DAQ • Prototyping 35t det@FNAL • practical experience with cryo-electronics incl. cold ASIC • Design choices influence DAQ • Oxford focus • software and management • Plan to expand into a more electronics/firmware (disc. ongoing) • DAQ green paper in preparation • Later prototyping in CERN test beam and LAr-1ND • Far detector might be (partially) installed in 2020 before beam arrives in 2025

  22. DAQ (MicroBooNE) not CG • Short Baseline LAr experiment in Fermilab booster beam (Guenette & Bass) • Search for sterile neutrinos • Prototyping LAr technology for physics • Oxford involvement • Muon veto: project manager • DAQ: lead in run control • Initial Comics data • Beam data in 2015 • Gain experience with LAr data • Reconstruction • interaction and oscillation analysis • LAr1-ND • ND to MB • planning and sensitivity studies

  23. Near Detector • LBL experiment require excellent control of systematics • Factors of 2-5 better than current experiments • Need highly capable ND systems to study nuclear effects on cross section and energy reconstruction • High pressure TPC is an option • Develop tool kid to design ND • Need for oscillation measurement • determine optimal configuration • Almost identical problem for LBNF and HyperK • Part of PPRP bid

  24. CG/project Manpower • T2K • Academics Barr, Vacheret, Wark, Weber • RAs Dewhurst (80%), Lu (80%) • HyperK • Academics Barr, Wark, (Weber) • RAs Dewhurst (20%), New (50%), w/ RAL (50%) • LBNF • Academics Barr, Guenette, Vacheret, Weber • RAs Dealtry (100%), Lu 20%, New (50%), (Bass) • HyperK & LBNF (DAQ/BE electronics) • PhysProg New (100%) • f/w Eng New (50-100%)

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