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In the first part the seminar a novel idea on the detection of Cosmological Relic Neutrinos (CRN) and more in general, on the detection of neutrinos of vanishing energy will be presented. This idea is described in detail in the paper [1]. The method exploits the neutrino interactions on beta-instable nuclei which have the key feature of having no minimal energy in order the neutrino interaction takes place. Some phenomenological aspects will be presented, too. The second part of the seminar will be dedicated to the PTOLEMY project, in a starting phase at the Laboratori Nazionali del Gran Sasso, Italy. In this project we aim at demonstrating the detection principle of the CRN and finalise the design of the future full scale experiment. The technologies on which the detector concept is based will be presented and the key features explained. A new-concept of electrostatic filter discussed in a paper [2] recently published by the PTOLEMY collaboration will also be explained in details.
[1] A. Cocco, G. Mangano and M. Messina, “Probing Low Energy Neutrino Backgrounds with Neutrino Capture on Beta Decaying Nuclei,”
Journal of Cosmological and Astroparticle Physics 0706 (2007), 15.
[2] M.G. Betti et al, “A Design for an electromagnetic filter for precision energy measurements at tritium endpoint”, Progress in particle and Nuclear Physics, 1206 (2019), 120.