Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 40: Methods in Particle Physics II (Misc.)

T 40.6: Vortrag

Dienstag, 1. April 2025, 17:30–17:45, VG 4.101

Optimization of module orientation for the DUNE TMS detector — •Asa Nehm for the DUNE collaboration — Johannes-Gutenberg University Mainz

The Deep Underground Neutrino Experiment (DUNE), currently under construction, will use a high-intensity neutrino beam from Fermilab and observe the neutrinos in the near detector based at Fermilab and the far detector complex located at SURF. The DUNE near detector complex will host a suite of detectors that are currently in development. The experiment will make precision measurements of the neutrino oscillation parameters including the CP violation phase and the mass ordering. It is also sensitive to neutrinos from galactic supernovas.

One of the near detectors is The Muon Spectrometer (TMS) that is tasked with determining the charge and measuring the momentum by range of the muons resulting from neutrino interactions exiting the preceding near detector. TMS will consist of alternating layers of plastic scintillators, in the 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.

The original design featured a stereo orientation plan with the bars being tilted by ±3^∘ alternatingly by layer. This introduces a large uncertainty in the dimension along the bars and can lead to problems in determining the momentum. In this talk different orientation plans including also orthogonal modules that could solve these problems will be discussed.

Keywords: DUNE; TMS; Detector development; Stereo scintillator bars