Dual-phase liquid xenon time projection chambers are the core detector elements of many experiments that conduct searches for Dark Matter and rare events, as well as in neutrino and high-energy physics. As part of this detector technology, high-voltage electrodes are instrumental for the generation of observable signals and their physical interpretation. Thus, electrode design and manufacturing has to fulfill stringent requirements, and their production is associated with significant engineering challenges. In this work we describe the successful development of electrodes on the 1.5 m-scale, from their design and simulation to subsequent assembly and high-voltage testing in a gaseous argon environment. The produced electrodes were recently installed as an anode and a cathode during an upgrade to the XENONnT experiment.
@article{arxiv.2511.16408,
title = {Development & Characterization of Electrodes for large-scale Xenon Time Projection Chambers},
author = {A. Elykov and S. Vetter and V. H. S. Wu and A. Deisting and K. Eitel and R. Gumbsheimer and M. Kara and S. Lichter and S. Lindemann and T. Luce and Y. Ma and J. Müller and K. Müller and K. Ni and U. Oberlack and M. Schumann and P. Shagin and K. Valerius and M. Zhong},
journal= {arXiv preprint arXiv:2511.16408},
year = {2026}
}