Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 34: Neutrino physics 5

T 34.5: Talk

Tuesday, March 5, 2024, 17:00–17:15, Geb. 30.22: Gaede-HS

Track Reconstruction and Geometry Studies of Scintillators Bars for DUNE TMS — •Asa Nehm for the DUNE collaboration — Johannes Gutenberg-Universität Mainz

For the Deep Underground Neutrino Experiment (DUNE), that is currently under construction, a suite of near detectors is in development. DUNE is a long-baseline neutrino experiment that will use a high-intensity neutrino beam from Fermilab and observe the neutrinos in the far-detector complex located at SURF, USA. The primary focus will be on neutrino oscillations to test CP violation, but also neutrino mass ordering and supernova neutrinos will be investigated.

One of the near detectors is The Muon Spectrometer (TMS) that will primarily detect and measure properties of the muons resulting from neutrino interactions exiting the preceding near detector. TMS will consist of alternating layers of plastic scintillators, in form of bars, and steel. The scintillator bars will be read out by WLS fibers and SiPMs and detect the scintillation light created by through-going charged particles.

To extract the properties of the incoming muons a 3D track reconstruction was developed and implemented. This allowed to study different potential geometric layouts of the scintillator bars. In particular a stereo view of alternating 3° tilted layers and a layout that features full 90° rotated layers were studied. With these preceding studies the exiting muons that are reconstructed as stopping in the detector have been investigated and the results will be presented.

Keywords: Track reconstruction; Detector development; Neutrino detectors; Long-Baseline Neutrino Experiment; DUNE