A dual-phase TPC (Time Projection Chamber) is more advanced in characterizing an event than a single-phase one because it can, in principle, reconstruct the 3D (X-Y-Z) image of the event, while a single-phase detector can only show a 2D (X-Y) picture. As a result, more enriched physics is expected for a dual-phase detector than a single-phase one. However, to build such a detector, DC HV (High Voltage) must be delivered into the chamber (to have a static electric field), which is a challenging task, especially for an LHe detector due to the extremely low temperature, ∼ 4 K, and the very high voltage, ∼ MV (Million Volts). This article introduces a convincing design for transmitting ∼ MV DC into a 4 K LHe detector. We also report the progress of manufacturing a 100 kV DC feedthrough capable of working at 4 K. Surprisingly, we realized that the technology we developed here might be a valuable reference to the scientists and engineers aiming to build residential bases on the Moon or Mars.
@article{arxiv.2310.12504,
title = {Conceptual design and progress of transmitting $\sim$ MV DC HV into 4 K LHe detectors},
author = {Zhuo Liang and Fengbo Gu and Jiangfeng Zhou and Junhui Liao and Yuanning Gao and Zhaohua Peng and Jian Zheng and Guangpeng An and Meiyuenan Ma and Lifeng Zhang and Lei Zhang and Xiuliang Zhao and Junfeng Xia and Gang Liu and Shangmao Hu},
journal= {arXiv preprint arXiv:2310.12504},
year = {2023}
}