What beamline group will supply for the (day-1) oscillation analysis. A.K.Ichikawa For T2K beamline group. Note. This is just a starting-point material for day-1 analysis. More discussion among the beamilne group is necessary. This note will be modified when more studies arises,
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What beamline group will supply for the (day-1) oscillation analysis
For T2K beamline group
This is just a starting-point material for day-1 analysis. More discussion among the beamilne group is necessary.
This note will be modified when
more studies arises,
real data come,
statistic increases after day-1.
For the real data processing, refer Nakadaira-san’s presentation file at the last collaboration (pre) meeting.
Example: DF(Ei)=Dy*ci : Dy is proton beam mis-hit position
Q: effect of parameter on numu analysis, on nue analysis (this may be extracted from the global analysis) precision achievable on parameter from the data
Followings are specific questions to beamline group and answers to them
How will we feedback the data from the muon monitors, NGRID and even ND280 into the beam monte carlo (Jnubeam) to either adjust it, evaluate systematic errors, reweight or include it in a global fit of ND280 (which depends both on flux and cross-sections)?
1. how to establish the misalignments experimentally? Just as an example: one could think of taking initial runs with the beam monitors and the NGRID and operating e.g. no horn, then one horn at a time, etc.. to assess whether one can constrain the alignment of each of the horns individually (I believe this does not require high intensity)
how will the feedback from the near detector (ND280) be done? (or what observations are more sensitive to flux and what are more sensitive to cross-section model?) I think this will involve some sort of global fit...
as a related question to the previous one: how will the nue flux to SK be determined two methods are possible -- direct from nue events in ND280 -- indirect from numu events in ND280 constraining the nue prediction from JNUBEAM
Red : Kaon contribution
Red : Kaon contribution