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X-WR-CALNAME:Erlangen Centre for Astroparticle Physics
X-ORIGINAL-URL:https://ecap.nat.fau.de
X-WR-CALDESC:Events for Erlangen Centre for Astroparticle Physics
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DTSTART:20170326T010000
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DTSTART:20171029T010000
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DTSTART;TZID=Europe/Berlin:20170517T120000
DTEND;TZID=Europe/Berlin:20170517T130000
DTSTAMP:20260427T032049
CREATED:20170320T180346Z
LAST-MODIFIED:20170320T180346Z
UID:809-1495022400-1495026000@ecap.nat.fau.de
SUMMARY:Kathrin Valerius - Status and prospects of direct neutrino mass searches: News from KATRIN and outlook on future projects
DESCRIPTION:Precision measurements of the kinematics of weak decays offer the only model- independent (direct) approach to investigate the absolute neutrino mass scale in a laboratory experiment. \nIn this talk I will review the status of direct neutrino mass searches based on beta decay of tritium and electron capture in 163Ho and give an overview of future experiments. The currently most mature technique relies on the spectroscopy of tritium beta decay near its kinematic endpoint at 18.6 keV. The KArlsruhe TRItium Neutrino experiment (KATRIN) is targeted at improving the sensitivity of this method by an order of magnitude to 200 meV/c2 (90% C.L.). To this end\, KATRIN utilises an ultra-luminous windowless gaseous tritium source and a high-resolution electrostatic spectrometer. In its recent „First Light“ campaign\, KATRIN has successfully inaugurated its full 70-m electron beam line and is now carrying out final commissioning works leading up to the start of tritium measurements. \nAt the same time\, novel approaches studying the electron capture spectrum in 163Ho with cryogenic microcalorimeters (notably\, ECHo\, HOLMES\, and NuMECS)\, or developing innovative techniques for tritium beta spectroscopy using radio-frequency detection of single electrons (Project 8) are gaining momentum. Experiments exploiting these new techniques are currently in the conceptual design and prototype characterisation phases\, with the aim of developing these complementary methods further towards a sub-eV sensitivity on the neutrino mass.
URL:https://ecap.nat.fau.de/index.php/event/seminar-2017-05-17-kathrin-valerius/
LOCATION:ECAP\, room 307\, Erwin-Rommel-Str 1\, Erlangen\, 91058\, Germany
CATEGORIES:Seminar
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