The KATRIN Neutrino Mass Measurement: Experiment, Status, and Outlook

Abstract

The Karlsruhe Tritium Neutrino (KATRIN) experiment will provide a measurement of the effective electron-neutrino mass, $m({\nu }_e)$, based on a precision measurement of the tritium beta decay spectrum near its endpoint. The effective mass is an average of the neutrino mass eigenvalues $m_i$ weighted by the flavor-mass mixing parameters $U_{ei}$ according to the relation $m^2({\nu }_e)={\sum }_{i=1}^3|U_{ei}{|}^2{m}_i^2$. The KATRIN apparatus uses a windowless gaseous tritium source (WGTS) and a spectrometer based on the MAC-E filter concept to measure the beta energy spectrum. The KATRIN program is designed to reach a mass sensitivity of 0.2~eV (90\% C.L.). The collaboration has completed a series of commissioning measurements and is moving into the first running of tritium. The KATRIN measurement technique, early commissioning results, and the future outlook will be presented.

arXiv commentTalk presented CIPANP2018. 9 pages, LaTeX

References in corpus (1)

• The KATRIN Superconducting Magnets: Overview and First Performance Results

Cited by in corpus (1)

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