Reconstruction Efficiency John M. LoSecco University of Notre Dame July 3, 2017 Reconstruction Efficiency (John LoSecco) 1/11
Introduction ◮ Poor detector response to neutrons ◮ Energy resolution ◮ Loss of tracks due to inefficiency ◮ Used results of the NueAna module ◮ Software from September 2016 ◮ Pandora ◮ Kinetic energy range from 50 MeV to 1.5 GeV only This talk compares MC truth values with reconstructed values. A track is considered reconstruction if it has any non-zero reconstructed length. No energy reconstruction comparison. Reconstruction Efficiency (John LoSecco) 2/11
ν µ events Fit Fit Fit Fit Fit Fit Reconstruction Efficiency 0.9 Reconstruction Efficiency Entries Entries 152 152 0.6 Entries Entries 87 87 Mean Mean 0.8121 0.8121 Mean Mean 0.7204 0.7204 Std Dev 0.4035 Std Dev 0.4035 Std Dev 0.4013 Std Dev 0.4013 0.8 0.5 0.7 0.4 0.6 0.3 0.5 0.2 0.4 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency Entries Entries 75 75 Entries Entries 54 54 1 0.5 Mean Mean 0.7307 0.7307 Mean Mean 0.7358 0.7358 Std Dev 0.4069 Std Dev 0.4069 Std Dev 0.4193 Std Dev 0.4193 0.45 0.8 0.4 0.6 0.35 0.4 0.3 0.25 0.2 0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Left to right top to bottom: Muons, protons, charged pions and photons Reconstruction Efficiency (John LoSecco) 3/11
ν µ events – Neutrons Fit Fit Fit Reconstruction Efficiency Entries Entries 0 0 1 Mean Mean 0 0 Std Dev Std Dev 0 0 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy No surprise Reconstruction Efficiency (John LoSecco) 4/11
ν µ events –Tracks Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency 0.35 Entries Entries 74 74 Entries Entries 2 2 0.45 Mean Mean 0.8223 0.8223 Mean Mean 0.8942 0.8942 Std Dev 0.4057 Std Dev 0.4057 Std Dev 0.3966 Std Dev 0.3966 0.3 0.4 0.25 0.35 0.2 0.3 0.25 0.15 0.2 0.1 0.15 0.05 0.1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Left, All tracks with PDG code < 2300. Right, All tracks with PDG code > 2300. Mostly nuclear fragments About 40% tracking efficiency on average. Nuclear fragment tracking efficiency is not surprising. But kinetic energies in the range are. These could be strange baryons. Reconstruction Efficiency (John LoSecco) 5/11
ν µ events ¯ Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency 0.6 Entries Entries 153 153 Entries Entries 83 83 0.9 Mean Mean 0.8126 0.8126 Mean Mean 0.7114 0.7114 0.55 Std Dev 0.4034 Std Dev 0.4034 Std Dev 0.4024 Std Dev 0.4024 0.8 0.5 0.45 0.7 0.4 0.6 0.35 0.5 0.3 0.25 0.4 0.2 0.3 0.15 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency Entries Entries 74 74 Entries Entries 47 47 1 0.5 Mean Mean 0.7147 0.7147 Mean Mean 0.6843 0.6843 Std Dev 0.4075 Std Dev 0.4075 Std Dev 0.3929 Std Dev 0.3929 0.45 0.8 0.4 0.6 0.35 0.3 0.4 0.25 0.2 0.2 0.15 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Left to right top to bottom: Muons, protons, charged pions and photons Reconstruction Efficiency (John LoSecco) 6/11
ν µ events –Tracks ¯ Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency Entries Entries 67 67 Entries Entries 5 5 0.5 0.45 Mean Mean 0.852 0.852 Mean Mean 0.9141 0.9141 Std Dev 0.4066 Std Dev 0.4066 Std Dev 0.3862 Std Dev 0.3862 0.4 0.4 0.35 0.3 0.3 0.25 0.2 0.2 0.1 0.15 0.1 0 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Left, All tracks with PDG code < 2300. Right, All tracks with PDG code > 2300. Mostly nuclear fragments About 35% tracking efficiency on average. Reconstruction Efficiency (John LoSecco) 7/11
µ e Comparisons Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency 0.9 Entries Entries 76 76 Entries Entries 152 152 0.6 Mean Mean 0.7316 0.7316 Mean Mean 0.8121 0.8121 Std Dev 0.4237 Std Dev 0.4237 Std Dev 0.4035 Std Dev 0.4035 0.55 0.8 0.5 0.45 0.7 0.4 0.6 0.35 0.3 0.5 0.25 0.4 0.2 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Fit Fit Fit Fit Fit Fit Reconstruction Efficiency Reconstruction Efficiency 0.35 Entries Entries 53 53 Entries Entries 74 74 0.45 Mean Mean 0.747 0.747 Mean Mean 0.8223 0.8223 Std Dev 0.4101 Std Dev 0.4101 Std Dev 0.4057 Std Dev 0.4057 0.4 0.3 0.35 0.25 0.3 0.25 0.2 0.2 0.15 0.15 0.1 0.1 0.2 0.4 0.6 0.8 1 1.2 1.4 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy Kinetic Energy Left, ν e . Right ν µ Top lepton, Bottom All tracks with PDG code < 2300 Reconstruction Efficiency (John LoSecco) 8/11
Conclusions ◮ Not a fair comparison ◮ Need to know the fraction of energy each of these contribute ◮ If no neutrons efficiency is not a problem. ◮ What is the Variance on the missing energy? ◮ Energy reconstruction is critical. Reconstruction Efficiency (John LoSecco) 9/11
Kinetic Energy All Primary Tracks ν µ Eneut-sqrt(Eneut**2-Pneut**2) {Eneut-sqrt(Eneut**2-Pneut**2)>0.&&Eneut-sqrt(Eneut**2-Pneut**2)<4.5} htemp htemp Entries Entries 649367 649367 Mean Mean 0.4507 0.4507 Std Dev 0.7634 Std Dev 0.7634 5 10 4 10 3 10 2 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Eneut-sqrt(Eneut**2-Pneut**2) Blue all tracks. Green found tracks. Red unfound tracks Log scale. Reconstruction Efficiency (John LoSecco) 10/11
Kinetic Energy All Primary Tracks ν µ Eneut-sqrt(Eneut**2-Pneut**2) {(Eneut-sqrt(Eneut**2-Pneut**2))*(Eneut-sqrt(Eneut**2-Pneut**2)>0.&&Eneut-sqrt(Eneut**2-Pneut**2)<4.5)} htemp htemp Entries Entries 649367 649367 6000 Mean Mean 1.744 1.744 Std Dev 1.183 Std Dev 1.183 5000 4000 3000 2000 1000 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Eneut-sqrt(Eneut**2-Pneut**2) Blue all tracks. Green found tracks. Red unfound tracks Linear scale. Reconstruction Efficiency (John LoSecco) 11/11
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