The MINOS calibration detector

Study of muon neutrino disappearance using the Fermilab Main Injector neutrino beam

“…One MEU corresponds to approximately 3.7 photoelectrons at the center of the Far Detector (7.5 photoelectrons when signals from both strip-ends are summed) and 5.4 photoelectrons at the beam center in the Near Detector. Based on muon stopping-power tables [33] we find that one MEU corresponds to 2:00 0:02 MeV of muon energy loss in scintillator [44,47]. This calibration was independently derived at the near and Far Detectors with a relative uncertainty of 2%.…”

“…Data from a dedicated, test-beam calibration detector [47] are used to benchmark the hadronic and electromagnetic shower simulation done by GEANT/GCALOR [42,43]. The measurements demonstrate that the simulated response agrees with the data at the level of 1%-5%, depending on the energy and particle type.…”

First observations of separated atmosphericνμandν¯μevents in the MINOS detector

“…The earlier 1D flux calculation from the Bartol group [23] (Bartol 1D) and the 3D calculation of Battistoni et al [24] were used to assign systematic uncertainties. The response of the MINOS detector to electrons, muons, and hadrons has been studied in a test beam at the CERN PS using the 12.5 ton MINOS calibration detector [25]. The test beam detector was constructed and read out in the same manner as the MINOS far detector.…”

Measurement of the Muon Neutrino Inclusive Charged Current Cross Section on Iron using the MINOS Detector

“…Events are pre-selected by requiring that the even vertex is reconstructed The histogram is the quadrature sum of the uncertainty in the simulation of hadron production in neutrino-iron interactions [39], an energy independent 5.6% uncertainty in detector response [40,41,42]. and a 2.3% uncertainty in detector calibration [21,43].…”