Bubble dynamics in Liquid Hole Multipliers
Abstract
In bubble-assisted Liquid HoleMultipliers(LHM), developed for noble-liquid radiation detectors, the stability of the bubble and the electro-mechanical properties of the liquid-to-gas interface play a dominant role in the detector performance. A model is proposed to evaluate the static equilibrium configurations of a bubble sustained underneath a perforated electrode immersed in a liquid. For the first time bubbles were optically observed in LAr; their properties were studied in contact with different material surfaces. This permitted investigating the bubble-electrodynamics via numerical simulations; it was shown that the electric field acts as an additional pressure term on the bubble meniscus. The predictions for the liquid-to-gas interface were successfully validated using X-ray micro-CT in water and in silicone oil at STP. The proposed model and the results of this study are an important milestone towards understanding and optimizing the parameters of LHM-based noble-liquid detectors.
Cite
@article{arxiv.2108.00067,
title = {Bubble dynamics in Liquid Hole Multipliers},
author = {A. Tesi and E. Segre and S. Leardini and A. Breskin and S. Kapishnikov and L. Moleri and D. Vartsky and S. Bressler},
journal= {arXiv preprint arXiv:2108.00067},
year = {2021}
}
Comments
25 pages, 15 figures