Seminars

Novel Noble-Liquid Detector Concepts

by Amos Breskin (Dept. of Astrophysics & Particle Physics, Weizmann Institute of ScienceRehovot, Israel)

Europe/London
R61, CR03

R61, CR03

https://ukri.zoom.us/j/97807522273
Description

Noble liquid radiation detectors are the leading tools in dark-matter searches and neutrino physics. Future large-scale detectors could benefit from recent advances in instrumentation that might solve some of their current drawbacks. We will introduce novel ideas of radiation-induced ionization-electron and scintillation-photon sensing concepts in single-phase and dual-phase noble-liquid detectors. They rely on recording photons and electrons by micro-structured electrodes, including ones undercoated with VUV photocathodes. According to the concept, the electrodes are either fully immersed in the liquid, floating on its surface, located in the gas phase or cascaded in both phases. Radiation-induced electrons in the liquid and primary-scintillation photo electrons emitted from the photocathode are collected onto thin anode strips or micro-patterned surfaces. Combined electroluminescence and charge multiplication in liquid or gas results in fast UV-photon flashes - detected by near-by photo-sensor arrays. In particular, some of the proposed concepts permit conceiving detectors expected to resolve current liquid-to-gas interface issues typical to large-volume dual-phase detectors; it is of high concern in future dark-matter searches. Light and charge multiplication in liquid has the potential of lowering the detection thresholds in current single-phase detectors.