Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 87: Gaseous detectors II

T 87.8: Vortrag

Donnerstag, 2. April 2020, 18:15–18:30, L-3.016

Time Projection Chambers for the T2K Near Detector UpgradePhilip Hamacher-Baumann, Thomas Radermacher, Stefan Roth, and •Nick Thamm — III. Physikalisches Institut B, RWTH Aachen University

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. The new high angle TPCs (HAT) 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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