Gamma track study update Jaewon Park University of Rochester MINERvA/Jupiter Group Meeting, Sep 5, 2007
2 Tracker Filter Definition View: X, U, or V HitPlane: Plane that has hits Minimum number of HitPlanes View that has largest number of hitPlanes > 3 hitPlanes Sum of hitPlanes from the other two views > 3 hitPlanes Minimum number of hit in a view Number of hits per view > 3
3 Digit hit xview uview vview Low energy, large angle gamma2 has a few hits but it doesn’t look like that poo r track. Tracker didn’t fit gamma2 because it di dn’t meet the requirement Apply different loose requirement for s hort track?
4 Number of hitPlane for gamma Two gamma e vent sample By looking ra w digit hits, si mply check hi tplane distribu tion. This is before applying Kal man Filter
5 Gamma track efficiency as function of angle