The NOvA power distribution system

Abstract

We describe the power distribution systems and grounding schemes built for the near and far detectors of the NOvA long-baseline neutrino experiment. They are used to power the avalanche photodiodes and their thermoelectric coolers, the front-end boards that read out, digitize and time stamp the signals from the avalanche photodiodes, and the data concentrator modules used to receive and format the data from the front-end boards before sending them to a farm of computers used to build the events. The system powers 344,064 readout channels in the far detector and 20,192 channels in the near detector.

Single Charged Pion Production by Muon Neutrinos in the MINERvA Detector Using the NuMI Beam

“…T2K's near and far detectors are made out of different target materials and operate on different detection principles, so this correlation cannot be used to the same extent. Figure from [43]. Despite these correlations, corresponding systematic uncertainties are not completely removed.…”