Speaker
Mr
Evan Niner
(Indiana University)
Description
The NuMI Off-Axis nu_e Appearance (NOvA) experiment has been
commissioning and operating its Far Detector in Ash River, MN for over
a year. Upon completion this summer, the 14 kT detector will
consist of more than 340,000 4x6 cm^2 x 15 m cells of extruded PVC
plastic filled with liquid scintillator and read out through avalanche
photo-diodes (APDs). NOvA's neutrino oscillation analyses require
precise correlation of events in the detector with the narrow 10
μs NuMI neutrino beam pulses. The technique to calibrate the timing
system uses the abundant cosmic-ray muon flux at the detector’s surface
location to establish a precise network of timing offsets between the
detector components spread over the 64 m spatial extent of the detector.
Cosmic-rays are also used to measure the light yield and attenuation
length within the detector cells and to establish the absolute energy
scale of the detector. This poster will discuss results from the time
synchronization and energy calibration performed with the cosmic-ray
flux.
Primary author
Mr
Evan Niner
(Indiana University)