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Homework from previous meeting

Homework from previous meeting. Matsuoka-san's report Check density of material (target, dump, horn). Categorize contribution from different setup/conditions. Check two Gaussian beam profile case to imitates the commissioning. Updated geometry should be checked by multiple people.

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Homework from previous meeting

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  1. Homework from previous meeting • Matsuoka-san's report • Check density of material (target, dump, horn). • Categorize contribution from different setup/conditions. • Check two Gaussian beam profile case to imitates the commissioning. • Updated geometry should be checked by multiple people. • Jordan's report • It is a little bit surprising (for at least to me) that beam profile center shift is expected at INGRID for proton beam shift even when horn is off. Let's check it. • Assumed INGRID response should be confirmed by the INGRID people. • General • Include beam divergence treatment into jnubeam and check the effect

  2. Review –K2K-

  3. Hadron production model Primary interaction p : momentum of secondary particle pB : momentum of incident proton Al Be used Convert beryllium to aluminum by rescaling Secondary interaction GCALOR/FLUKA

  4. HARP, Pion monitor and MC comparison n spectrum shape Near F/N Far Far/Near ratio vs En We use the HARP F/N ratio for the oscillation analysis

  5. Estimation of uncertainty • Primary interaction • the flux variation in each energy bin by varying a given HAPR Sanford-Wang parameter by 1s • ~30% in the interaction length. • overall charged and neutral kaon production normalization : 50% • Secondary interaction • Take relatively large differences between the GCALOR/GFLUKA and GHEISHA • also in comparison to available experimental data • Horn Magnetic field • 10% uncertainty in the absolute field strength • periodic perturbation in azimuth of up to 15% amplitude with respect to the nominal field strength • Beam optics • 1.2 mm : impact point on target, and 2.0 mrad in injection angle • beam profile width at the target and angular divergence : the 20% accuracy with which the beam profile widths are measured at the SPIC detector locations.

  6. Uncertainty on Far/Near

  7. Neutrino spectrum measurement at ND Fit result of neutrino spectrum

  8. Fitting NSK and Spectrum shape systematics parameters spec nQE/QE Far/near eSK(efficiency) SK Enegry scale Overall Norm Error Systematic parameters also treated as fitting parameter.

  9. Nsk (Flux) 1KT (same target and detection technique as SK) simply, But actually ND measurement tuned by Cho param. HARP i :energy, j :mode ND measurement

  10. Cancellation of syst error on N11exp N11exp(f) NSKMC(f) ∝NKTMC(f)

  11. Spectrum : 1Rm

  12. Contribution of syst. errors on spectrum Spec. nQE/QE Spec.+nQE/QE Total SK Escale eSK F/N

  13. K2K-II ne appearance searchError on backgrounds from nm * Super-K intrinsic

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