2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187726The large-volume liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) will provide high-grade background discrimination and enable the detection of diffuse supernova neutrinos (DSN) in an almost background-free energy window from ~10 to 25 MeV. Within ten years of exposure, it will be possible to derive significant constraints on both core-collapse supernova models and the supernova rate in the near universe up to redshifts z<2.11 pages, 8 figures. accepted for publication in Phys. Rev. D. accepted for publication in Phys. Rev. DAstrophysicstext