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Dortmund 2021 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 3: Accelerator neutrino experiments

T 3.7: Vortrag

Montag, 15. März 2021, 17:30–17:45, Tc

The T2K Near Detector UpgradePhilip Hamacher-Baumann, Paula Nehm, Paolina Noll, Thomas Radermacher, Stefan Roth, David Smyczek, and •Nick Thamm — RWTH Aachen University - Physics Institute III B, Aachen, Germany

The Tokai to Kamioka (T2K) long baseline neutrino oscillation experiment is entering the next phase (T2K-II) with increased beam power of up to 1.3 MW. To match the reduced statistical uncertainty an upgrade of the near detector (ND280) is planned to increase the detector acceptance and therefore reduce the systematic uncertainties. In the upstream part a 3D fine-grained scintillator target, a time-of-flight system and two time projection chambers (TPCs) will be installed. These new High Angle TPCs (HATs) will cover the phase space of neutrino scattering with the final state lepton scattered at a large angle. Improved momentum resolution and particle identification will be achieved by using resistive bulk micromegas technology. Installation is scheduled for the year 2021 with first data taking starting in 2022. In this talk first tests of a prototype HAT including gas monitoring chambers will be presented.

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