Speaker
Description
The direct detection of particle dark matter is one of the most compelling challenges of modern fundamental physics. Xenon based dual-phase time projection chambers (DP-TPCs) are the leading technology for Weakly Interacting Massive Particles (WIMPs) search. The DP-TPC approach proved to be reliable, highly sensitive, intrinsically low-background and especially easily scalable until an active volume of few tons. However, when scaling to even larger masses other challenges show up, such as the requirement of a stronger drift field and the more stringent mechanical constraints for the larger needed electrodes. This work is based on the realization of transparent conductive layers deposited on a transparent support (UV grade fused silica window), that could possibly solve the difficulties related to the realization and correct functioning of the very large electrodes needed for the next-generation DP-TPCs. So far Indium-Tin-Oxide (ITO), $Al_2O_3$-doped Zinc-Oxide (AZO) and Graphene thin films were already designed, fabricated and preliminarily characterized in collaboration with the CREO laboratories (in L’Aquila). Currently, other layer materials and deposition techniques are under investigation. A liquid xenon single phase TPC of small dimensions is currently being installed at Laboratori Nazionali del Gran Sasso of INFN. This work focuses on the characterization results of the transparent conductive layers to evaluate their performances in this test facility.
| Collaboration | PRIN 2022YYX3WJ |
|---|---|
| Role of Submitter | I am the presenter |
