Upgrade of the T2K near detector ND280: effect on oscillation and cross-section analysis

Abstract

The T2K neutrino oscillation experiment established the ${\nu }_{\mu }\to {\nu }_e$ appearance with only $10\%$ of the original beam request of $7.8\times 10^{21}$ $30$ GeV protons on target (POT). In view of the J-PARC program of upgrades of the beam intensity, the T2K-II proposal for $20\times 10^{21}$ POT aimed at establishing CP violation at $3\sigma$ level for a significant fraction of the possible ${\delta }_{CP}$ values. The Hyper-K proposal consists of a further increase by a factor $10$ of the far detector mass. Facing the potential increase of statistics by two orders of magnitude, it is of great importance to undertake a vigorous program of near detector upgrade, with the aim of reducing the overall statistical and systematic uncertainties at the appropriate level of better than $4\%$. The design and performance of the proposed upgraded near-detector will be reported in these proceedings.

arXiv comment6 pages, LaTeX, 6 figures, proceedings of NuFact 2017 (Uppsala, Sweden, 25-30 September 2017)

References in corpus (4)

• Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6E20 protons on target
• Measurement of neutrino and antineutrino oscillations by the T2K experiment including a new additional sample of ${\nu }_e$ interactions at the far detector
• Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector
• Measurement of Muon Antineutrino Oscillations with an Accelerator-Produced Off-Axis Beam