Design and performance of the field cage for the XENONnT experiment

dc.citation.articleNumber138en_US
dc.citation.issueNumber2en_US
dc.citation.journalTitleThe European Physical Journal Cen_US
dc.citation.volumeNumber84en_US
dc.contributor.authorXENON Collaborationen_US
dc.date.accessioned2024-08-07T19:15:02Zen_US
dc.date.available2024-08-07T19:15:02Zen_US
dc.date.issued2024en_US
dc.description.abstractThe precision in reconstructing events detected in a dual-phase time projection chamber depends on an homogeneous and well understood electric field within the liquid target. In the XENONnT TPC the field homogeneity is achieved through a double-array field cage, consisting of two nested arrays of field shaping rings connected by an easily accessible resistor chain. Rather than being connected to the gate electrode, the topmost field shaping ring is independently biased, adding a degree of freedom to tune the electric field during operation. Two-dimensional finite element simulations were used to optimize the field cage, as well as its operation. Simulation results were compared to $${}^{83\textrm{m}}\hbox {Kr }$$calibration data. This comparison indicates an accumulation of charge on the panels of the TPC which is constant over time, as no evolution of the reconstructed position distribution of events is observed. The simulated electric field was then used to correct the charge signal for the field dependence of the charge yield. This correction resolves the inconsistent measurement of the drift electron lifetime when using different calibrations sources and different field cage tuning voltages.en_US
dc.identifier.citationXENON collaboration. (2024). Design and performance of the field cage for the XENONnT experiment. The European Physical Journal C, 84(2), 138. https://doi.org/10.1140/epjc/s10052-023-12296-yen_US
dc.identifier.digitals10052-023-12296-yen_US
dc.identifier.doihttps://doi.org/10.1140/epjc/s10052-023-12296-yen_US
dc.identifier.urihttps://hdl.handle.net/1911/117611en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleDesign and performance of the field cage for the XENONnT experimenten_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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