Orateur
Description
Liquid Xenon Time Projection Chambers (LXe-TPCs) represent a leading technology in the direct search for WIMP dark matter and rare event physics. Achieving high sensitivity requires precise control over the electric field, signal extraction, and light collection within the active volume. This talk presents recent advancements in electric field modeling for the XENONnT experiment, alongside an R&D project, XeLab, for next-generation electrodes to be used in the XLZD experiment.
For the XENONnT dual-phase TPC, comprehensive COMSOL Multiphysics simulations were performed to model the drift field configuration during Science Run 3 (SR3). Key drift parameters and electrostatic field uniformity were analyzed to derive the charge insensitive volume (CIV) map. Consequently, the generation of field correction maps represents an essential step for accurate position reconstruction and signal corrections.
Looking ahead to the next-generation XLZD experiment, the discussion is about the design and optimization of new electrode structures developed within the XeLab project. Specifically, the focus is on the implementation of hexagonal grid meshes and the introduction of supporting pillars to avoid mechanical displacement. The purpose is to investigate the optimal pillar configurations in terms of material, geometry, quantity, and positioning, evaluating their impact on optical and electrostatic transparency while maintaining structural stability and field uniformity.