E898 plots

Beam K/pi monitoring

NEW: Michel's GEANT4 update 12/15/03.

1 horn / 2 horn ratio.

One-horn vs. two comparison.

Antineutrino v neutrino flux in negative horn running.

Fast beam MC studies.

Water radiation plots.

E898 nu_mu flux at detector (GFLUKA) -- HBOOK format.

E898 target TDR draft, May 15, 2001.

Ion's electron efficiency with 4th order polynomial fit and Bill's cuts.

NEW: Ion's pi0 efficiency overlaid with Bill's.

Comparison of physics sensitivity using different horn currents, target positions.

Preliminary notes on using the farms (11/29/00).

Sensitivity results for standard counting analysis and for energy cut.

Sensitivity results for standard target and for 'beam plug' configuration, for different syst. error assumptions.

Nu-mu energy spectrum with standard mh1.2 horn at 140 kA (HBOOK FILE!!)..

Sensitivity results for different horn currents..

Large-radius CASIM results (ASCII).

CASIM plot for PSAD, 50m running.

CASIM plot for PSAD, 25m running.

Physics limit for for MH1, with Bill's cut efficiencies and Byron's neural net results with 1 sigma error for backgrounds.

Physics limit for for MH1, with Bill's cut efficiencies.

Physics limits for MH1, various decay lengths.

Variation of decay length using MH1 (numbers of events based on 200000 protons). Note that the statistical errors are highly correlated between the different runs, since they use the same GEANT run.

Decay length:            35m/17.5m   40m/20m  45m/22.5m   50m/25m

Signal                    159-255    175-280   189-303    204-328  
				  
K+ decay nu_e bkg.           96        108       116        116    
KL decay nu_e bkg.           56         65        65         73    
mu decay nu_e bkg.           84         88       103        137    
mu mis-ID                    55         62        67         74    
pi0 mis-ID                  133        151       165        184    
TOTAL BACKGROUND            424        473       516        584    

Physics limits for MH1, MH1D, and MH4. "MH1D" is MH1 with a 3mm wider neck (outer radius 2.5 instead of 2.2cm) to accomodate a larger target assembly.

Physics limits for MH1 and MH4.

Numbers of events: (based on 200000 protons in each simulation)
                           MH1        MH1D        MH4 
Signal                   204-328    192-307      213-341

K+ decay nu_e bkg.         116        172          271
KL decay nu_e bkg.          73         54           96
mu decay nu_e bkg.         137        226          223
mu mis-ID                   74         64           71
pi0 mis-ID                 184        153          158
TOTAL BACKGROUND           584        669          819

neutrino flux for Ioanis' MH1 and MH1C.

NOW WITH HIGHTER MH4 STATISTICS: neutrino flux for Ioanis' MH1 and Ron's two-tubular horn MH4.

neutrino flux for Ioanis' MH1 and Ron's tubular horns MH2 and MH3.

neutrino flux for Ioanis' MH1 and Ron's tubular horn MH2.

Modified BNL (default) horn design:

CASIM star density plots for Target pile and decay region. Horn current is 200 kA.

Wunderhorn design, standard collimator and old-horn-2 aperture:

CASIM star density plots for Target pile and decay region. Horn current is 250 kA.

Wunderhorn with widened cavity and collimator: Target pile. decay region.

Wunderhorn physics plots: wunder2.ps

Pion production transverse momentum plots: 0.2 GeV 0.4 GeV 0.6 GeV 1.0 GeV 1.5 GeV

Talk on neutrino mass physics: PDF

Eric D. Zimmerman (edz@fnal.gov)