Future Long Baseline Study Intro to the Meeting September 1617,2006 Fermilab

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Future Long Baseline Study Intro to the
MeetingSeptember 16-17,2006Fermilab
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Welcome

• Logistics (a.k.a coffee and Sunday Lunch)
• Review of our charge
• Starting Point
• Organization of the study
• Status of deliverables
• Brief description of the final report
• Much more tomorrow
• Review of the Agenda
• Questions??

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Logistics

• Coffee and bagels tomorrow morning - here 9 am
• Pizza order for Sunday Lunch
• 6, sign up on sheet before Sunday 10 am
• Send talks to rameika_at_fnal.gov

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Review of Our Charge

• Drafted by Hugh Montgomery (FNAL) and Sally
  Dawson (BNL)
• April 2006
• U.S. Long Baseline Neutrino Experiment Study
• Timescale
• results from the study by October 2006
• mid-term report in July

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• Compare the neutrino oscillation physics
  potential of
• A broad band neutrino beam from 1 MW FNAL
  accelerator, aimed at a DUSEL based detector
• to
• An Off-axis neutrino beam from FNAL (1-2 MW)
  aimed at a Liquid Argon detector, either at DUSEL
  or as a second detector for the NOvA experiment

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To be considered

• Ability to establish a finite ?13, determine the
  mass hierarchy, search for CP-violation limiting
  systematics
• Precision of measurements and hence ability to
  discriminate between neutrino mass models
• Experiment design concepts optimum energies,
  geometries, technologies, cost guesstimates

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Meanwhilenew charge to NuSAG

• We would now like your group to address the APS
  Studys recommendation for a next-generation
  neutrino beam and detector configurations.
  Assuming a megawatt class proton accelerator as a
  neutrino source, please answer the following
  questions for accelerator-detector configurations
  including those needed for a multi-phase off-axis
  program and a very-long-baseline broad-band
  program. This assessment will be used as one of
  the key elements to guide the direction and
  timeline of such a possible next generation
  neutrino beam facility.

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Questions for NuSAG

• Scientific potential What are the important
  physics questions that can be addressed at the
  envisioned neutrino beam facility?
• Associated detector options What are the
  associated detector options which might be needed
  to fully realize the envisioned physics
  potentials? What are the rough cost ranges for
  these detector options?
• Optimal timeline What would be the optimal
  construction and operation timeline for each
  accelerator-detector configuration, taking the
  international context into account?
• Other scientific considerations What other
  scientific considerations, such as results from
  other neutrino experiments, will be important in
  order to optimally determine the design
  parameters? What would be additional important
  physics questions that can be addressed in the
  same detector?

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The DOE and NSF would like a preliminary draft
of your report by June 2006, with a final version
by August 2006.
so much for that schedule...
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Starting Point

• Phase 0 Current Program
• operations 2005 - 2009-10
• NuMI to MINOS
• L 735 km on-axis
• LE beam
• 12e20 POT total
• Phase I Program under construction
• 2011 - 2016
• NuMI to NOvA
• L 810 km, 12 km off-axis
• ME Beam -gt 2 GeV neutrinos
• 6e20 protons/year

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Phase II The subject of our study

• Protons
• Beam energy and intensity
• Neutrinos
• Energy spectrum
• Wide band
• Narrow band/off-axis
• Detectors
• Water cerenkov
• Liquid Argon

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Questions from NuSAG

• Very detailed
• Distributed to study group members by Milind
• I will post the list later today

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Organization of the Study

• Accelerator
• Neutrino Beams
• Wide Band DUSEL
• Off-Axis NuMI
• Detectors
• Water cerenkov
• Liquid Argon

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Status of deliverablesa.k.a. written material
Preliminary design, cost, and schedule of a 300
kT water Cherenkov detector array is discussed in
"Proposal for an Experimental Program in
Neutrino Physics and Proton Decay in the
Homestake Laboratory," Collaboration BNL, Brown
University, UC/Berkeley, LBNL, University of
Pennsylvania, Princeton University, UCLA,
University of Wisconsin, University of Kansas,
University of Colorado. July 12, 2006.
BNL-76798-2006-IR. a modified copy without some
figures is at hep-ex/0608023 Design, simulation,
and event yields from a new intense wide band
neutrino beam from FNAL is discussed in
"Simulation of a Wide-band Low-Energy Neutrino
Beam for Very Long Baseline Neutrino Oscillation
Experiments," M. Bishai, J. Heim, C. Lewis, A. D.
Marino, B. Viren, F. Yumiceva, July 20, 2006
PDF. Calculation of the beam spectra and event
rates for various off-axis locations on the NuMI
beamline is calculated in "Event Rates for Off
Axis NuMI Experiments," B. Viren, June 8, 2006.
BNL-76869-2006-IR or hep-ex/0608059 This
document is still in revision. It describes the
technical requirements and feasibility for a
solid target with a 1MW capability. "Target
System for a Long Baseline Neutrino Beam," N.
Simos, H. Kirk, J. Gallardo, S. Kahn, N. Mokhov.
June 26, 2006. DOC. A plan for increasing the
proton intensity at FNAL in described in
"Fermilab Proton Projections for Long-Baseline
Neutrino Beams," Robert Zwaska for the SNuMI
planning group, July 17, 2006. local pdf. and
FNAL-Beams-DOC-2393
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A simulation of water Cherenkov detector with a
wide band neutrino beam and the first attempt to
suppress showering events background to
acceptable levels is described in "Background
Rejection Study in a water Cherenkov detector,"
C. Yanagisawa, C. K. Jung, P.T. Le, B. Viren,
July 18, 2006. pdf. For the wide band beam and
water Cherenkov detector option we have
calculated the physics sensitivity taking into
account all correlations and degeneracies as well
as estimates for systematic uncertainties. This
work is reported in "Precision physics with a
wide band super neutrino beam," V. Barger, M.
Dierckxsens, M. Diwan, P. Huber, C. Lewis, D.
Marfatia, B. Viren, Jul 17, 2006 hep-ph/0607177
for a local copy BNL-76797-2006-JA
pdf. Resolution and Background Rejection in a
Liquid Argon TPC. "Monte Carlo study of a liquid
Ar time projection chamber for long baseline
neutrino experiments." A. Curioni, August 10,
2006. pdf. Cosmic ray rates on a surface liquid
argon TPC, David Gerstle and Stephen Pordes,
August 21, 2006, pdf. Deep Underground Cryostat
for a LArTPC, Carl Bromberg, September 12, 2006,
pdf.
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The Report

• Basic Idea its a guide to the write-ups
• Short summaries
• just the facts conclusions

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Todays Agenda

• Morning
• Updates/reviews of work presented at earlier
  meetings
• Afternoon
• Newer work

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Tomorrow

• Morning
• Discussion of the report preparation
• Afternoon
• Continue presentation of newer work
• More informal
• QA
• Discussion

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Questions?
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Example of some nice work done by Christine Lewis
- available from the Study web page
We can look at more Of these tomorrow