Neutrino Flux Nominal and Deformed z Nicholas Lira University of - PowerPoint PPT Presentation

Neutrino Flux Nominal and Deformed z Nicholas Lira University of Texas Arlington DUNE Group July 20 2017

z The Dilemma There seems to be a consistent non – physical bump around 4.5 ▪ GeV for all deformations applied to the Inner Conductor for the neutrino flux. This same deviation does not exist for the pions. The goal of this talk is to understand why this may be occurring for the neutrino flux. 1

z Click to add text This is at only 5 micron deformation!!!

z Beamline Configuration 1 ▪ Version: v3r5p2 ▪ Jobs = 300 ▪ Protons on Target = 35,000 protons/job ▪ 10.5 million Protons on Target for every configuration ▪ Target: Graphite Simple Cylindrical. ▪ Target Radius: 5 mm ▪ Target Length: 2 meters ▪ Nominal Run ▪ Eccentric: 5, 25, 50, 100, 200, 300, 400, 500 microns ▪ Elliptic: 5, 25, 50, 100, 200, 300, 400, 500 microns 2

z Beamline Configuration 2 ▪ Version: v3r5p2 ▪ Jobs = 30 ▪ Protons on Target = 35,000 protons/job ▪ 1,05 million Protons on Target for every configuration ▪ Target: Graphite Simple Cylindrical. ▪ Target Radius: 5 mm ▪ Target Length: 2 meters ▪ Nominal Run ▪ Eccentric: 5 microns 3

z Ratio – Eccentricity 5 microns over Nominal 5

z Ratio - Nominal divided by Nominal 6

z Ratio – Eccentricity 100 microns over Eccentricity 5 microns 7

z Ratio – Eccentricity 200 microns over Eccentricity 5 microns 8

z Ratio – Eccentricity 300 microns over Eccentricity 5 microns 9

z Ratio – Eccentricity 400 microns over Eccentricity 5 microns 10

z Ratio – Eccentricity 500 microns over Eccentricity 5 microns 11

z Ratio – Eccentricity 5 microns over Eccentricity 5 microns 12

Ratio – Nominal microns over z Eccentricity 5 microns 13

z Ratio – Nominal over Eccentricity 500 microns 14

z …. Just in case you were wondering about Ellipticity.... ▪ 15

z Ratio – Ellipticity 5 microns over Nominal 16

z Conclusion The neutrino flux bump occurring in the 4 – 5 GeV range does not ▪ immediately appear to be a fault in Root's processing, from my perspective. As you can see, some reasonable observations can me made. This leads me to believe there is an error in the source code or in my eventRates.C file. Nevertheless, that would still be odd because we are seeing some acceptable results when comparing two macros running the same simulation. If Root is making a mistake in binning, I would need to understand exactly what mechanism is creating these contradictory results. On one hand, it is showing something very reasonable. On the other, it has left us baffled.

z Appendix

z Ecce 5 ND

z Ecce 100 ND

z Ecce 300 ND

z Ecce 500 ND

z Elli 5 ND

z Elli 100 ND

z Elli 300 ND

z Elli 500 ND