Ponente
Descripción
The TREXDM detector, a low background chamber with microbulk Micromegas readout, was commissioned in the underground laboratory of Canfranc (LSC) in 2018. Since then, data taking campaigns have been carried out with Argon and Neon mixtures, at different pressures from 1 to 4 bar. The two challenges currently faced are the reduction of the background level and the improvement of the energy threshold. Apart from studies to identify and minimize contamination populations, recently we are exploring the development of a new readout plane based on the combination of Micromegas and GEM technologies; the aim is to have a pre-amplification stage that would permit very low energy thresholds, close to the single-electron ionization energy. With respect to the background reduction, a high sensitivity alpha detector is being developed in order to allow a proper material selection for the TREXDM detector components.
