The KArlsruhe TRitium Neutrino experiment: first tritium runs
 
MIT
Mardi 04/12/2018, 11h00-12h00
Bat 703, p 45, CEA Saclay, Orme des Merisiers


The discovery of neutrino oscillations has proven that neutrinos have mass, and yet, for all the efforts to
constrain the neutrino masses via direct and indirect methods, the neutrino mass scale remains undetermined.

The KATRIN experiment aims at measuring the effective electron antineutrino mass with a 0.2 eV
(90%C.L.) sensitivity by analysing the beta-decay spectrum of molecular tritium near its endpoint. This
70 m-long experiment consists of a windowless gaseous source, differential and cryogenic pumps for tritium
retention, and a main spectrometer acting as a high-pass filter for the electrons collimated towards the
148-pixel silicon detector.

This talk will focus on the commissioning of the KATRIN experiment, with an emphasis on its first
tritium runs. The description of the beta-decay spectrum near the endpoint, the response function of the
apparatus, and the statistical tools used for the interpretation of the observed integrated spectrum will be
highlighted.
Ajouter à mon agenda -  Jour inhabituel
Contact : Loïc THULLIEZ

 

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