Liquid xenon time projection chambers (LXeTPC) own the detection sensitivity of light dark matter and neutrino CEvNS signals due to its ultra-low energy threshold. However, the sensitivity in sub-keV region is significantly limited by the instrument background, specifically delay photons and delay electrons. In this talk, we will present our investigation into the origins of these backgrounds,...
Neutrinos from Supernova 1987A (SN1987A) were fundamental in understanding the formation of a newborn neutron star (NS). From an astrophysical perspective, the importance of these neutrinos is that they allowed us to "see" inside the structure of the NS. Approximately 99% of the energy released after the SN1987A explosion was in the form of neutrinos of all species, with equal probability. To...
Annealing is widely recognized as a key post-deposition thermal treatment for enhancing the performance of thin films by improving their microstructure, morphology, and electrical and optical properties. In this study, we investigate the physical behavior of p-terphenyl thin films deposited on dichroic filters and subjected to annealing processes carried out at fixed durations...
A new concept of GEM-like structures was recently proposed. In this concept, a wavelength-shifting material is deposited inside the holes of GEM-like structures, which can improve the light collection efficiency in Ar-based dual-phase TPCs, solving problems related with the scalability of future dual-phase TPCs.
In this work, we report the newest developments on the production of GEM-like...
A prototype setup is being developed at the Leptons Laboratory, Universidade Estadual de Campinas (UNICAMP), for preliminary validation of the PoWER (Polymer Wavelength shifter and Enhanced Reflection) concept. PoWER is a novel detector design aimed at improving spatial discrimination of scintillation photons in liquid argon (LAr) detectors. The concept relies on wavelength-shifting PEN foils...
