LSND Neutrino Flux Calculation
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The neutrino fluxes in the LSND experiment are calculated
by using a beam Monte Carlo programme which simulates the production of
neutrinos from about 800MeV proton beam at the target area.
The information on the proton beam and target materials is given as the
input for this MC programme.
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Beam and Target Information (R. Tayloe)
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Beam Monte Carlo Programme
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Flux Calculation for 1993~4
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For 1995, see the R. Tayloe's Study in ~rex/lsnd/beammc/
in LSND sgi's.
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Running
Beam MC for 1996~8 Experiment
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Each configuration needs to be run six times for
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With muon decay - used for DAR and muon DIF fluxes
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Withour muon decay - used for pi DIF fluxes
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For pi ->e,nu
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Both charges for above 3 cases
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Histogram
Files from Beam MC
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Analysis
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Two .kumac Files
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addflux.kumac
- combine histograms from all configurations for each year
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getflux.kumac
- get flux and the neutrino energy spectrum for each nuetrino creating
channel at 25 points inside the LSND detector.
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DAR Fluxes [#nu/cm2]
at the Center of Detector
| Neutrinos |
Sources |
93 |
94 |
95 |
96 |
97 |
98 |
| nu_mu |
pi+ |
8.00x1013 |
2.94x1013 |
3.30x1013 |
1.28x1013 |
2.65x1013 |
1.14x1013 |
| nu_mu |
mu- |
0.76x1010 |
2.49x1010 |
2.71x1010 |
1.16x1010 |
2.58x1010 |
1.25x1010 |
| nubar_mu |
pi- |
0. |
0. |
0. |
0. |
0. |
0. |
| nubar_mu |
mu+ |
0.92x1013 |
3.05x1013 |
3.41x1013 |
1.32x1013 |
2.74x1013 |
1.17x1013 |
| nu_e |
pi+ |
1.10x109 |
3.62x109 |
4.06x109 |
1.57x109 |
3.26x109 |
1.40x109 |
| nu_e |
mu+ |
0.92x1013 |
3.05x1013 |
3.41x1013 |
1.32x1013 |
2.74x1013 |
1.17x1013 |
| nubar_e |
pi- |
0. |
0. |
0. |
0. |
0. |
0. |
| nubar_e |
mu+ |
0.76x1010 |
2.49x1010 |
2.71x1010 |
1.16x1010 |
2.58x1010 |
1.25x1010 |
| nu_mu |
mu capture |
0.46x1011 |
1.51x1011 |
1.77x1011 |
8.04x1010 |
1.84x1011 |
8.06x1010 |
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DIF Fluxes [#nu/cm2]
at the Center of Detector
| Neutrinos |
Sources |
93 |
94 |
95 |
96 |
97 |
98 |
| nu_mu |
pi+ |
0.76x1012 |
2.69x1012 |
2.73x1012 |
9.81x1011 |
2.18x1012 |
9.05x1011 |
| nu_mu |
mu- |
6.54x108 |
2.32x108 |
2.38x108 |
1.29x108 |
2.56x108 |
1.07x108 |
| nubar_mu |
pi- |
1.02x1011 |
3.62x1011 |
3.94x1011 |
1.87x1011 |
4.00x1011 |
1.74x1011 |
| nubar_mu |
mu+ |
0.46x109 |
1.64x109 |
1.58x109 |
6.17x108 |
1.31x109 |
5.24x108 |
| nu_e |
pi+ |
0.68x108 |
2.41x108 |
2.47x108 |
1.22x108 |
2.67x108 |
1.12x108 |
| nu_e |
mu+ |
0.52x109 |
1.84x109 |
1.77x109 |
6.17x108 |
1.31x109 |
5.24x108 |
| nubar_e |
pi- |
1.06x107 |
3.76x107 |
4.17x107 |
2.67x107 |
4.88x107 |
2.15x107 |
| nubar_e |
mu+ |
0.72x108 |
2.55x108 |
2.62x108 |
1.29x108 |
2.56x108 |
1.07x108 |
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DIF Fluxes [#nu/cm2]
at the Center of Detector
(Enu>123MeV for numu and Enu>113MeV for
nubarmu)
| Neutrinos |
Sources |
93 |
94 |
95 |
96 |
97 |
98 |
| numu |
pi+ |
1.70x1011 |
6.04x1011 |
5.97x1011 |
2.04x1011 |
4.43x1011 |
1.72x1011 |
| nubarmu |
pi- |
1.71x1010 |
6.06x1010 |
6.69x1010 |
2.91x1010 |
5.86x1010 |
2.32x1010 |