Designing an electric field for a prototype solid xenon dark matter detector.

Current xenon-based dark matter detectors are limited by radon-induced background signals, which may mimic dark matter interactions and reduce detection sensitivity. Solid xenon (SXe)'s crystalline structure serves as a barrier to radon diffusion while enhancing localization of particle interactions, making it a promising alternative to traditional liquid xenon detectors. We present electric field models of a SXe Time Projection Chamber (TPC) to predict particle detection properties, which inform the optimization of a TPC design for a 10kg SXe detector.