Zimmerman

							BooNE at SIX MONTHS
(Short Version)


      E. D. Zimmerman
     University of Colorado




        NOON2003
     Kanazawaa, Japan
     February 11, 2003
     BooNE at Six Months



"   Physics Motivation: LSND

"   BooNE Overview / The Neutrino Beam

"   The Oil Cerenkov Detector

"   Reconstruction and Analysis

"   First Neutrino Data

"   Physics Prospects
A different model: Maximal CPT Violation
          (Barenboim, Borissov, Lykken, hep-ph/0212116)

    - Independent mass hierarchies for ä and ä.




             neutrino masses            antineutrino masses

   - Proposed in 2001, but accomodates KamLAND

   - Side benefit: heavier antineutrinos allow early
     universe leptogenesis in thermal equilibrium
BooNE Collaboration
  (plus summer students)
   Summer 2002
                       Beryllium Target
                       Assembly




End View




           Side View
Inner conductor being welded
Horn During Assembly, May 2001
 PRELIMINARY flux from GEANT monte carlo




MARS shows lower neutrino energy, total flux.
Decay pipe and LMC muon drift pipe, November 20, 2000
  LMC under assembly




 p
pmt bases
 m

     January
     2003                light
                       guide
                       fibers
Tank assembly in place, May 4, 2000
Cables/Inner Structure Installation, February 2001
                        First pretty
                        neutrino event




First neutrino event!
A à0ÓÓ Candidate Event
RF structure of the beam is easily seen.

  Event time resolution is very good!
Lots of Cosmic Rays:

HIGH-STATISTICS MICHEL ELECTRON SAMPLES
FOR ENERGY RESOLUTION STUDIES
Current status:

" First run August 2002-January 2003
" Collected 3D1019 protons on target
" Running resumed February 4
" Booster losses are still limiting intensity
" New collimators are being fabricated for       installation in spring;
these should            alleviate the intensity problem somewhat.
" LMC installation likely March
" Horn and detector operation have been            smooth.
Expected
 Physics
  Sensitivity: