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

2018/09/27 by G. Franklin, Franklin, Gregg B. · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Neutrino Physics Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.1809.10603

openalex publication_date 2018/09/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The Karlsruhe Tritium Neutrino (KATRIN) experiment will provide a measurement of the effective electron-neutrino mass, m(ν_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 m²(ν_e)= ∑_i=1³ |U_ei |² m_i². 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.

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