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Volume 295 - The 19th International Workshop on Neutrinos from Accelerators NUFACT2017 (NuFact2017) - Working groups 1 and 2: Session 6
Upgrade of the T2K near detector ND280: effect on oscillation and cross-section analyses
M. Lamoureux* On behalf of the T2K collaboration
*corresponding author
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Pre-published on: 2018 March 06
Published on: 2018 June 18
The T2K neutrino oscillation experiment established the $\nu_\mu \rightarrow \nu_e$ appearance with only 10\% of the original beam request of $7.8\times10^{21}$ $30$ GeV protons on target (POT). In view of the J-PARC program of upgrades of the beam intensity, the T2K-II proposal for $20\times10^{21}$ 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.
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