Reconstruction Efficiency John M. LoSecco University of Notre Dame - - PowerPoint PPT Presentation

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

νµ events

Fit Entries 152 Mean 0.8121 Std Dev 0.4035 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.4 0.5 0.6 0.7 0.8 0.9 Reconstruction Efficiency Fit Entries 152 Mean 0.8121 Std Dev 0.4035

Fit

Fit Entries 87 Mean 0.7204 Std Dev 0.4013 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.3 0.4 0.5 0.6 Reconstruction Efficiency Fit Entries 87 Mean 0.7204 Std Dev 0.4013

Fit

Fit Entries 75 Mean 0.7307 Std Dev 0.4069 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Reconstruction Efficiency Fit Entries 75 Mean 0.7307 Std Dev 0.4069

Fit

Fit Entries 54 Mean 0.7358 Std Dev 0.4193 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.4 0.6 0.8 1 Reconstruction Efficiency Fit Entries 54 Mean 0.7358 Std Dev 0.4193

Fit

Left to right top to bottom: Muons, protons, charged pions and photons

Reconstruction Efficiency (John LoSecco) 3/11

νµ events – Neutrons

Fit Entries Mean Std Dev 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.4 0.6 0.8 1 Reconstruction Efficiency Fit Entries Mean Std Dev

Fit

No surprise

Reconstruction Efficiency (John LoSecco) 4/11

νµ events –Tracks

Fit Entries 74 Mean 0.8223 Std Dev 0.4057 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 Reconstruction Efficiency Fit Entries 74 Mean 0.8223 Std Dev 0.4057

Fit

Fit Entries 2 Mean 0.8942 Std Dev 0.3966 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.05 0.1 0.15 0.2 0.25 0.3 0.35 Reconstruction Efficiency Fit Entries 2 Mean 0.8942 Std Dev 0.3966

Fit

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

¯ νµ events

Fit Entries 153 Mean 0.8126 Std Dev 0.4034 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.3 0.4 0.5 0.6 0.7 0.8 0.9 Reconstruction Efficiency Fit Entries 153 Mean 0.8126 Std Dev 0.4034

Fit

Fit Entries 83 Mean 0.7114 Std Dev 0.4024 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 Reconstruction Efficiency Fit Entries 83 Mean 0.7114 Std Dev 0.4024

Fit

Fit Entries 74 Mean 0.7147 Std Dev 0.4075 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Reconstruction Efficiency Fit Entries 74 Mean 0.7147 Std Dev 0.4075

Fit

Fit Entries 47 Mean 0.6843 Std Dev 0.3929 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.4 0.6 0.8 1 Reconstruction Efficiency Fit Entries 47 Mean 0.6843 Std Dev 0.3929

Fit

Left to right top to bottom: Muons, protons, charged pions and photons

Reconstruction Efficiency (John LoSecco) 6/11

¯ νµ events –Tracks

Fit Entries 67 Mean 0.852 Std Dev 0.4066 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 Reconstruction Efficiency Fit Entries 67 Mean 0.852 Std Dev 0.4066

Fit

Fit Entries 5 Mean 0.9141 Std Dev 0.3862 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.1 0.2 0.3 0.4 0.5 Reconstruction Efficiency Fit Entries 5 Mean 0.9141 Std Dev 0.3862

Fit

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

µe Comparisons

Fit Entries 76 Mean 0.7316 Std Dev 0.4237 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 Reconstruction Efficiency Fit Entries 76 Mean 0.7316 Std Dev 0.4237

Fit

Fit Entries 152 Mean 0.8121 Std Dev 0.4035 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.4 0.5 0.6 0.7 0.8 0.9 Reconstruction Efficiency Fit Entries 152 Mean 0.8121 Std Dev 0.4035

Fit

Fit Entries 53 Mean 0.747 Std Dev 0.4101 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.1 0.15 0.2 0.25 0.3 0.35 Reconstruction Efficiency Fit Entries 53 Mean 0.747 Std Dev 0.4101

Fit

Fit Entries 74 Mean 0.8223 Std Dev 0.4057 0.2 0.4 0.6 0.8 1 1.2 1.4 Kinetic Energy 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 Reconstruction Efficiency Fit Entries 74 Mean 0.8223 Std Dev 0.4057

Fit

Left, νe. Right νµ 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 νµ

htemp Entries 649367 Mean 0.4507 Std Dev 0.7634 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Eneut-sqrt(Eneut**2-Pneut**2)

2

10

3

10

4

10

5

10 htemp Entries 649367 Mean 0.4507 Std Dev 0.7634

Eneut-sqrt(Eneut**2-Pneut**2) {Eneut-sqrt(Eneut**2-Pneut**2)>0.&&Eneut-sqrt(Eneut**2-Pneut**2)<4.5}

Blue all tracks. Green found tracks. Red unfound tracks Log scale.

Reconstruction Efficiency (John LoSecco) 10/11

Kinetic Energy All Primary Tracks νµ

htemp Entries 649367 Mean 1.744 Std Dev 1.183 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Eneut-sqrt(Eneut**2-Pneut**2) 1000 2000 3000 4000 5000 6000 htemp Entries 649367 Mean 1.744 Std Dev 1.183

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)}

Blue all tracks. Green found tracks. Red unfound tracks Linear scale.

Reconstruction Efficiency (John LoSecco) 11/11