Tau Neutrino Optimization Results Michael Dolce 1 DUNE reference - PowerPoint PPT Presentation

Tau Neutrino Optimization Results Michael Dolce 1

DUNE reference design with NuMI style horns Horn 2 Horn 1 Target Carrier & Baffle From “LBNF/DUNE CDR Volume 3: The Long-Baseline Neutrino Facility for DUNE” 2

NuMI Style Configuration Beam width/height 1.5 mm Target shape “BOX” Target width 6.4 mm Target height 20.0 mm Target density 1.754 g/cm 3 3

LBNF Style Configuration Beam width/height 1.7 mm Target shape “BOX” Target width 10.0 mm Target height 20.73 mm Target density 1.754 g/cm 3 4

Parameters Target length 0.9538 m 2.3719 m Target distance to 1.5 m 2.0 m 2.85 m horn 1 (0.42 m) ref) Horn 2 6 m … 17 m Location Horn 1 & 2 200 kA 230 kA current 5

Target Design Parameters Events NuMI 1m target target distance 2.0m 809 length current 230kA NuMI 2m target target distance 2.0m 827 length current 230kA LBNF 1m target target distance 2.0m 764 length current 230kA LBNF 2m target target distance 2.0m 721 Length current 230kA 6

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Target Design Parameters Events NuMI 1m target target distance 2.0m 809 length current 230kA NuMI 2m target target distance 2.0m 827 length current 230kA LBNF 1m target target distance 2.0m 764 length current 230kA LBNF 2m target target distance 2.0m 721 Length current 230kA — — — target distance 2.0m, NuMI 2m target 839 current 230kA, length beam width/height 1.1m 12

Conclusion • Of the four configurations, the NuMI style horn produces the most tau neutrinos (> 800 events). Specifically, the 2m long NuMI style target is best producing 827 events. • The next thing to do is to compare these events to the three horns design. 13

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