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Item type:Publication, Charge readout electronics for the DUNE horizontal drift far detector: design and performance in ProtoDUNE-HD(Institute of Physics, 2026-08-01)DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment currently under construction, whose far detectors will be the largest liquid argon time projection chambers ever built. This detector design calls for custom-built cryogenic front-end electronics to meet its performance requirements. This paper describes the charge readout electronics that will be used in the DUNE horizontal drift (HD) far detector and presents performance results using data from the ProtoDUNE-HD detector, a 770 ton liquid argon time projection chamber operated at the CERN Neutrino Platform in 2024 that served as the final prototype of the DUNE HD design.1 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Reconstruction of atmospheric neutrinos in DUNE’s horizontal-drift far-detector module(Springer Nature, 2026-07-01)This paper reports on the capabilities in reconstructing and identifying atmospheric neutrino interactions in one of the Deep Underground Neutrino Experiment’s (DUNE) far detector modules, a liquid argon time projection chamber (LArTPC) with horizontal drift (FD-HD) of ionization electrons. The reconstruction is based upon the workflow developed for DUNE’s long-baseline oscillation analysis, with some necessary machine-learning models’ retraining and the addition of features relevant only to atmospheric neutrinos such as the neutrino direction reconstruction. Where relevant, the impact of the detection of the charged particles of the hadronic system is emphasized, and comparisons are carried out between the case when lepton-only information is considered in the reconstruction (as is the case for many neutrino oscillation experiments), versus when all particles identified in the LArTPC were included. Three neutrino direction reconstruction methods have been developed and studied for the atmospheric analyses: using lepton-only information, using all reconstructed particles, and using only correlations from reconstructed hits. The results indicate that incorporating more than just lepton information significantly improves the resolution of both neutrino direction and energy reconstruction. The angle reconstruction algorithms developed in this work result in no strong dependence on particle direction for reconstruction efficiencies or neutrino flavor identification. This comprehensive review of the reconstruction of atmospheric neutrinos in DUNE’s FD-HD LArTPC is the first step towards developing a first neutrino oscillation sensitivity analysis, which will ready DUNE for its first measurements.3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Room-temperature ferromagnetism and anomalous electrical transport in Fe-doped ITO thin films(Institute of Physics, 2026-06-26)Here, we report the structural, optoelectronic, and magnetic properties of sputtered Fe-doped ITO thin films. X-ray diffraction analysis confirms the formation of a single-phase cubic bixbyite structure, indicating effective diffusion and substitution of Fe ions into the ITO lattice without evidence of secondary phases. The incorporation of Fe ions introduces localized magnetic moments into the ITO host matrix. Increasing the annealing temperature reduces the defect density and enhances the optical transmittance, consistent with the observed decrease in Urbach energy. Temperature-dependent resistivity measurements reveal an anomalous semiconducting behavior strongly influenced by the annealing conditions. Magnetic characterization demonstrates the coexistence of paramagnetic and ferromagnetic contributions, with room temperature ferromagnetism reaching a saturation magnetization up to <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mo>∼</mml:mo> </mml:mrow> </mml:math> 0.64 emu g <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msup> <mml:mrow/> <mml:mrow> <mml:mo>−</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> (1.4 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msub> <mml:mi>μ</mml:mi> <mml:mrow> <mml:mi mathvariant="normal">B</mml:mi> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> /Fe) after annealing at 400 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msup> <mml:mo/> <mml:mo>∘</mml:mo> </mml:msup> </mml:mrow> </mml:math> C. The observed ferromagnetism in the Fe-doped ITO samples is attributed to oxygen vacancies, which promote the formation of bound magnetic polarons near Fe ions. The resistivity-temperature curve shows a Kondo-like upturn at low temperatures, suggesting scattering of conduction electrons by localized Fe ions. Photocurrent measurements confirm n-type conductivity, which is significantly enhanced upon annealing at 700 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:msup> <mml:mo/> <mml:mo>∘</mml:mo> </mml:msup> </mml:mrow> </mml:math> C.