Status and New Ideas Regarding Liquid Argon Detectors

Abstract

Large (up to $\sim 100$ kt) liquid argon time-projection chamber detectors are presently being considered for proton decay searches and neutrino astrophysics, as well as for far detectors for the next generation of long-baseline neutrino oscillation experiments that aim to determine neutrino mass hierarchy and search for CP violation in the leptonic sector. These detectors rely on the capabilities to assemble large volumes of LAr in ultrahigh-purity conditions, possibly in an underground environment, and to achieve relatively long drifts for the ionization charge. Several proposals have been developed, each of which takes a different approach to the design of the cryogenic vessels and has different scales of modularity to reach the final mass dictated by physics. New detector concepts, with innovative designs of readout electronics and novel methods for the readout of the ionization charge and scintillation light, have been proposed.

accepted for publication by Ann. Rev. Nucl. Part. Sci

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• Wavelength shifters for applications in liquid argon detectors
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• The science and technology of liquid argon detectors
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• Spatial and Temporal Evaluations of the Liquid Argon Purity in ProtoDUNE-SP
• Near-infrared scintillation of liquid argon: recent results obtained with the NIR facility at Fermilab
• A Tetramethylsilane TPC with Cherenkov light readout and 3D reconstruction
• Calibration of calorimetric measurement in a liquid argon time projection chamber
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