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Contribution Poster direct neutrino mass

Poster (not participating in poster prize competition)

Electron Gun for KATRIN


  • Dr. Philipp Chung-On RANITZSCH
  • Rudolf SACK

Primary authors

Authorship annotation

for the KATRIN collaboration

Session and Location

Monday Session, Poster Wall #26 (Robert-Schumann-Room)

Abstract content

The KArlsruhe TRItium Neutrino experiment (KATRIN) is a next generation tritium beta-decay experiment, which aims to determine the neutrino mass with an estimated sensitivity of $0.2$ eV/c$^2$ (90% C.L.).

One of the main sources of systematics in KATRIN is the scattering of beta-electrons on the source gas and its impact on the shape of the measured spectrum. To improve the understanding of the scattering cross-section and for additional systematics and monitoring tasks, the KATRIN beam line is equipped with a mono-energetic and angular selective electron source. This e-gun can reach electron energies of $32 \, keV$, energy widths better than $200 \, meV$ and rates of $100 \, kcps$.

The poster will give details on working principle, technical realization, commissioning measurements and future systematics studies and regular monitoring tasks.

The work of the authors is supported by BMBF Verbundforschung under contract 05A17PMA and DFG Research Training Group 2149.

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