Tomo mography E Examp mple fro from m NOv OvA E. Craig Dukes - PowerPoint PPT Presentation

Tomo mography E Examp mple fro from m NOv OvA E. Craig Dukes for the CRV Group October 28, 2019

NOvA Near Detector is Being Used for Tomography Craig Dukes Pyramid: 10/28/2019 2

A Bump was Found in Muon Flux Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 3

Flux Suddenly Increased Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 4

Bump Points to ICARUS Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 5

ICARUS Construction Schedule Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 6

Found a Deficit as Well Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 7

Is There a North-South Difference Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 8

North-South Difference Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 9

North-South Difference Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 10

Left-Right Difference as Well Peter Filip, NOvA Craig Dukes Pyramid: 10/28/2019 11

Comments NOvA Near Detector is ~100 m underground, which removes low- energy muons There is no East-West effect for high energy muons We do not have this luxury for scanning the pyramid unless we can somehow eliminate low-energy muons Eliminating low-energy muons (< 100 GeV) can be done using TRDs, which would mean a completely different design. Unfortunately, these are the muons we want! Craig Dukes Pyramid: 10/28/2019 12