2020
DOI: 10.1088/1748-0221/15/07/p07010
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A method to determine the electric field of liquid argon time projection chambers using a UV laser system and its application in MicroBooNE

Abstract: Liquid argon time projection chambers (LArTPCs) are now a standard detector technology for making accelerator neutrino measurements, due to their high material density, precise tracking, and calorimetric capabilities. An electric field (E-field) is required in such detectors to drift ionization electrons to the anode where they are collected. The E-field of a TPC is often approximated to be uniform between the anode and the cathode planes. However, significant distortions can appear from effect… Show more

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Cited by 48 publications
(58 citation statements)
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“…Uncertainties associated to the pion and proton re-interactions in the detector medium are expected to be controlled from ProtoDUNE and LArIAT data, as well as the combined analysis of low density (gaseous) and high density (LAr) NDs. Uncertainties in the E field also contribute to the energy scale uncertainty [85], and calibration is needed (with cosmics at ND, laser system at FD) to constrain the overall energy scale. The recombination model will continue to be validated by the suite of LAr experiments and is not expected to be an issue for nominal field provided minimal E field distortions.…”
Section: Samplementioning
confidence: 99%
“…Uncertainties associated to the pion and proton re-interactions in the detector medium are expected to be controlled from ProtoDUNE and LArIAT data, as well as the combined analysis of low density (gaseous) and high density (LAr) NDs. Uncertainties in the E field also contribute to the energy scale uncertainty [85], and calibration is needed (with cosmics at ND, laser system at FD) to constrain the overall energy scale. The recombination model will continue to be validated by the suite of LAr experiments and is not expected to be an issue for nominal field provided minimal E field distortions.…”
Section: Samplementioning
confidence: 99%
“…Laser beams for calibration purposes have been used in MicroBooNe [18] and design is underway for DUNE [19]. Two methods are usually considered.…”
Section: Calibration Methodsmentioning
confidence: 99%
“…The laser system used by MicroBooNE [4] was used as a reference design. That system allows to point the laser beam in various directions from two fixed points outside the field cage.…”
Section: Pos(ichep2020)865mentioning
confidence: 99%