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Future Neutrino Physics Mitch Soderberg Fermilab Institutional Review June 6-9, 2011. Outline. P hysics of future neutrino experiments. NuMI Neutrino Beam Experiments NO n A MINOS+ MINER n A Booster Neutrino Beam Experiments MiniBooNE MicroBooNE LBNE

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future neutrino physics mitch soderberg fermilab institutional review june 6 9 2011

Future Neutrino PhysicsMitch SoderbergFermilab Institutional ReviewJune 6-9, 2011

outline
Outline

Physics of future neutrino experiments.

NuMI Neutrino Beam Experiments

  • NOnA
  • MINOS+
  • MINERnA

Booster Neutrino Beam Experiments

  • MiniBooNE
  • MicroBooNE

LBNE

Neutrino Possibilities with Project X

Conclusion

Fermilab Institutional Review, June 6-9, 2011

long baseline neutrino physics
Long Baseline Neutrino Physics

𝜃13 Discovery Evolution

arXiv:1005.3146

MINOS Neutrino/Antineutrino Results

Fermilab Institutional Review, June 6-9, 2011

Neutrino oscillation physics is entering an exciting period, with several experiments under construction, or on the horizon, that have discovery potential.

  • What is 𝜃13?
  • Is there CP violation with neutrinos?
  • What is the mass hierarchy?

NOvA, T2K, and reactor experiments could measure 𝜃13 in the coming years.

MINOS reports interesting 2𝜎 neutrino/antineutrino discrepancy.

short baseline neutrino physics
Short Baseline Neutrino Physics

Neutrino Cross-Sections

MiniBooNE sees hint of LSND-like oscillation in antineutrino mode.

  • Sterile Neutrinos?
  • Lorentz/CPT violation?
  • New interactions?

Measurements of neutrino cross-sections in the few-GeV region are extremely relevant for oscillation physics, and can probe interesting nuclear effects (e.g. - short-range correlations).

Short-Baseline Workshop held at Fermilab in May to discuss this physics.

Fermilab Institutional Review, June 6-9, 2011

goal for proton source throughput
Goal for Proton Source Throughput

Tevatron ends

LBNE

NOvA

MINERvA

MINOS?

MINERvA

MINOS

MiniBooNE

Mu2e

g-2

MicroBooNE

Timeline for Fermilab Neutrino Experiments in Coming Decade

Fermilab Institutional Review, June 6-9, 2011

slide6
NOvA

NOvA is a next generation experiment on the FermilabNuMI neutrino beam to search for nm- neandnm- neoscillations

_

_

Of next generation experiments, NOvA uniquely provides

information on the neutrino mass hierarchy, dCP, and possible

differences in neutrino and antineutrino disappearance rates.

  • Far detector laboratory near completion at Ash River MN 810 km from FNAL.
  • First detector planes to be installed at end of this year.
  • Operating a prototype on surface at FNAL in NuMI and Booster neutrino beams
  • Upgrade to 700 kW NuMI beam intensity during shutdown in 2012.
  • First data starting in early 2013
  • Far detector completed by end of 2013.

NuMInm CCQE event in NOvA prototype

Beneficial occupancy of Ash River lab 4/11

Fermilab Institutional Review, June 6-9, 2011

slide7
NOvA

NuMI spill gate (10 usec)

BNB spill gate (1.6 usec)

Beam direction

NOvA has been operating a prototype near detector on the surface in the NuMI and Booster neutrino beams since December 2010. Already recorded 1001 NuMI events and 189 Booster events.

Fermilab Institutional Review, June 6-9, 2011

nova n e and n e appearance
_NOvA ne and ne appearance

NOvA is designed to have large mass, low Z, and fine segmentation to separate neCC events from NC events

Fermilab Institutional Review, June 6-9, 2011

nova n m and n m disappearance
_NOvA nm and nm Disappearance

nmcharged-current interactions have a very clear signature in NOvA (see below) and are reconstructed with 4% energy resolution allowing for precise measurements of “23” sector both in neutrino and antineutrino mode.

.

Measurements of “23” oscillation parameters for three possible choices of inputs

Energy rise at end of proton track

Resolution of the MINOS neutrino/antineutrino discrepancy.

Fermilab Institutional Review, June 6-9, 2011

minos
MINOS+

4-10GeV range only covered by MINOS

After 3 years of MINOS+ Running

MINOS collaboration has proposed continued running in the NuMI-NOvA beam.

3000 CC events/year in 4-10GeV range in MINOS. (Have ~1500 events in this range after 5 years of LE running).

Extended running would quickly improve existing MINOS 𝜃23, 𝛥m2 measurements, and also improve world measurement when combined with NOvA.

Fermilab Institutional Review, June 6-9, 2011

minos1
MINOS+
  • MINOS+ can also search for non-standard interactions (NSI).
  • NSI = Differences between neutrinos and anti-neutrinos due to non-standard matter effects.
  • Comparison of low and high energy behavior could disentangle NSI story without anti-neutrino running.

J. Kopp, P.A.N. Machado and S.Parke, Phys.Rev.D82:113002 (2010).

Fermilab Institutional Review, June 6-9, 2011

miner n a loi to study n d scattering
MINERnA: LOI to study n-D scattering
  • Wealth of charged lepton ratios of A/D structure functions
  • Global fits for these ratios in neutrinos puzzling
  • Measuring n-D scattering (and A/D ratios) will allow new wealth of n-A data to be used in extracting PDF’s

MINERvA can see broad range in x,y, Q2 in NuMI Medium Energy beam

Fermilab Institutional Review, June 6-9, 2011

miner n a capabilities with d 2 target
MINERnA Capabilities with D2 target
  • Usingcurrent knowledge of detector
    • Acceptance
    • performance
  • Includes Empty target run
  • Can get to first direct measurements of Fe/D2 Structure Functions in n’s and anti-n’s
  • Investigating ability to identify Quasi-Elastic events also!
  • Figures assume 3 years n, 3 years anti-n, 6E20/year

Fermilab Institutional Review, June 6-9, 2011

getting deuterium to miner n a
Current Vessel is rated for D2 as well as Helium

Submitted LOI to Directorate to request advice on pursuing solutions to:

Safety concerns for running D2 underground

Acquiring 0.37tons of D2

Modest detector upgrades might extend physics reach even further

Getting Deuterium to MINERnA

Fermilab Institutional Review, June 6-9, 2011

future miniboone running
Future MiniBooNE Running
  • MiniBooNE will run until the March 2012 shutdown, at which point they will have collected >1E21 POT in anti-n mode.
  • After analysis of this data, MiniBooNE will decide on submitting a proposal for future running.

6.46E20 POT in Nu Mode

5.66E20 POT in Anti-Nu Mode

Fermilab Institutional Review, June 6-9, 2011

microboone
MicroBooNE
  • MicroBooNE is a 170 ton Liquid Argon neutrino detector that will begin operations in 2013.
  • MicroBooNE has several goals:
    • Determine the nature of the MiniBooNE low-energy excess.
    • Make numerous cross-section measurements (many for the 1st time on LAr).
    • Measure background rates relevant for nucleon-decay searches at LBNE.
  • MicroBooNE serves as a technology test for future massive Liquid Argon detectors.

Schematic of MicroBooNE Experiment

Expected MicroBooNE Neutrino Sample

Fermilab Institutional Review, June 6-9, 2011

microboone1
MicroBooNE
  • MicroBooNE will have superior background rejection, relative to MiniBooNE, thanks to capabilities of Liquid Argon detectors.
  • Neutral Current background is almost completely eliminated using MicroBooNE’s excellent electron/photon separation.
  • Simulation/Reconstruction tools developed/tested on ArgoNeuT will be used on MicroBooNE and LBNE.

Neutrino Interaction in ArgoNeuT Detector

Fermilab Institutional Review, June 6-9, 2011

slide18
LBNE
  • LBNE = Long Baseline Neutrino Experiment
    • 306 members, 58 institutions, 5 countries
  • LBNE, located at the Homestake Mine (L~1300km), would receive an intense neutrino beam from Fermilab.
  • LBNE would run in the era after NOvA (~2020).
  • Far-detector options include:
    • One 200kTon (fiducial) Water Cerenkov detector
    • Two 17kTon (fiducial) LArTPCs

Water Cerenkov detector at 4800’ Depth

Two LAr detectors at 800’ Depth

Fermilab Institutional Review, June 6-9, 2011

slide19
LBNE
  • LBNEwill have excellent sensitivity to measurements of 𝜃13, 𝛿CP, and mass hierarchy.
  • LBNE far detectors will improve the limits of nucleon decay.
  • Supernova neutrino burst would produces thousands of interactions in far detectors.

34 kTons LAr

Fermilab Institutional Review, June 6-9, 2011

200 kTons WC

neutrino physics in the project x era
Neutrino Physics in the Project X Era
  • 3 GeV, 8GeV, and 120GeV proton sources available in Project X era.
  • 2 MW beam to LBNE greatly increases the exposure rate and extends the physics reach.
  • Intense beams for short-baseline experiments would be extremely sought after if LSND/MiniBooNE signals persist.

Diagram of Project X Facilities

LAr+WC Sensitivities for 700kW/2MW

Fermilab Institutional Review, June 6-9, 2011

conclusions
Conclusions

Fermilab will have unique facilities for neutrino physics in the coming decade (on/off axis beams, short-baseline experiments, precision measurements).

Experimental neutrino physics will be thriving at Fermilab in the coming decade.

Results from future long-baseline experiments will further our understanding of neutrino oscillations.

Continued exploration of short-baseline experiments will produce precision cross-section measurements while potentially leading to the discovery of sterile neutrinos or other new physics.

Fermilab Institutional Review, June 6-9, 2011

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