1. f Axis Off Axis Introduction Off-Axis Cambridge Meeting 12 January 2004 Gary Feldman

2. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 2 Off-Axis Beams It is clear that the next generation of experiments will concentrate on e   oscillations, which are needed for sin 2 (2  13 ) sign(  m 13 2 ) 

3. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 3 Off-Axis Rationale l Want low-energy narrow-band beams at the oscillation maximum: e appearance maximum  CC disappears l Higher-energy NC disappears Want detectors optimized for e detection l Want increases in beam flux times detector mass l  NuMI Off-axis Experiment An order of magnitude increase in sensitivity over MINOS Long baseline to maximize matter effects

4. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 4 Off-Axis Kinematics

5. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 5 Off-Axis Spectrum (No oscillations)

6. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 6 NuMI Off-Axis Proposal l The Off-Axis experiment is proposed to be l 50 kT l Medium-Z sandwich detector Particle board absorber Liquid scintillator strip detectors with APD readout Glass RPC detectors fallback option l 810 km baseline, about 12 km off-axis (Ash River, MN)

7. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 7 Electron Track Hits per plane > 1

8. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 8 Muon track Hits per plane ~1

9. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 9 NC with leading  0 Two tracks with different starting points leading to a “gap”

10. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 10 Detail of NC with leading  0 gap

11. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 11 Status l Submitted a LOI to Fermilab PAC August 2002 l Submitted a Progress Report December 2003 l Will submit a full proposal March 2004 l PAC reaction: l “This can potentially become the future flagship experiment in an exciting neutrino physics program at Fermilab.” l “…the Committee feels that some assistance from Fermilab for time-critical R&D needs leading to the proposal are justified.” l Collaboration meeting February 7-8 at Fermilab

12. Off Axis Gary Feldman Cambridge Off-Axis 12 January 2004 12 Agenda 10:00Welcome and IntroductionGary Feldman, Harvard 10:10Physics OverviewWalter Winter, Munich 10:40Future of Neutrino Program at FermilabHugh Montgomery, Fermilab 11:00APS Workshop on NeutrinosBoris Kayser, Fermilab 11:15Coffee Break 11:30NuMI/MINOS StatusSasha Kopp, U. of Texas, Austin 11:45Near term plans for upgrades All Eric Prebys, Fermilab 12:05 Plans for a Proton Driver Bob Kephart, Fermilab 12:30 Lunch All 14:00 Off-axis Detector with Scintillator Ken Heller, Minnesota 14:20 Off-axis Detector with RPCs John Cooper, Fermilab 14:40 Results of Simulations Peter Litchfield, Minnesota 15:00 Background determination/Near Detector Stan Wojcicki, Stanford 15:20 Site Issues Marvin Marshak, Minnesota 15:40 Coffee Break All 16:00 Long Term NuMI program Gary Feldman, Harvard 16:20 Near Term R&D program Doug Michael, CalTech 16:40 Costs and Schedule TBC 17:00 Discussion All