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SUMMARY:The Ptolemy project
DTSTART:20260930T120000Z
DTEND:20260930T130000Z
DTSTAMP:20261115T003100Z
UID:indico-event-53485@agenda.infn.it
DESCRIPTION:Speakers: Gianluca Cavoto (Istituto Nazionale di Fisica Nuclea
 re)\n\nThe PTOLEMY project aims at taking a snapshot of the first second o
 f the Universe\, when the Cosmic Neutrino Background (CνB) decoupled\, wh
 ich has been for a long time a dream in the field of Cosmology.  The PTOL
 EMY detection principle relies on CνB capture on a target of beta-unstabl
 e elements\, since in this process mono-energetic electrons are emitted ju
 st above the beta-decay endpoint.  The extremely low cross section impose
 s a large target mass resulting in a prohibitive rate of background events
 . For this reason a novel concept dynamic electromagnetic-filter\, capable
  of selecting electrons in the region of interest has been developed. The 
 usage of beta-unstable element\, as target\, imposes an extreme energy res
 olution to disentangle electrons from beta-decays from those emitted in th
 e case of neutrino capture. This makes a possible detector of relic neutri
 nos a perfect instrument to measure neutrino mass. The neutrino mass measu
 rement has the advantage that can be achieved with much less target mass w
 hile the technology for relic neutrino detection is being validated.  The
  status of the on-going R&D efforts towards a full demonstrator being asse
 mbled at INFN LNGS is discussed.\n\nhttps://agenda.infn.it/event/53485/
LOCATION:Aula Salvini (Laboratori Nazionali di Frascati)
URL:https://agenda.infn.it/event/53485/
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