Bubble dynamics in Liquid Hole Multipliers

Abstract In bubble-assisted Liquid Hole Multipliers (LHM), developed for noble-liquid radiation detectors, the stability of bubble and electro-mechanical properties liquid-to-gas interface play a dominant role in detector performance. A model is proposed to evaluate static equilibrium configurations sustained underneath perforated electrode immersed liquid. For first time bubbles were optically observed LAr; their studied contact with different material surfaces. This permitted investigating bubble-electrodynamics via numerical simulations; it was shown that electric field acts as an additional pressure term on meniscus. The predictions successfully validated using X-ray micro-CT water silicone oil at STP. results this study are important milestone towards understanding optimizing parameters LHM-based detectors.