KCETA Day 2026

Analysis of the in-situ rear-wall backscattering measurements with the pulsed e-gun source

Not scheduled

2m

NTI Lecture Auditorium at KIT Campus South (B 30.10) (KIT Campus South)

Poster Poster Session with light lunch

Speaker

Théo Picardel (Karlsruher Institut für Technologie)

Description

The KATRIN experiment aims to constrain the effective mass of the electron anti-neutrino on a sub 0.3 eV level, by measuring the tritium beta decay spectrum with high-resolution and high statistics. For being able to reach this ambitious goal, KATRIN needs to have a good understanding and quantification of all systematic effects.
Rear-wall backscattering is one of the most important unaccounted for systematics for the KATRIN experiment and recent measurements using the pulsed electron-gun source have provided first quantifications of this effect.
With these measurements we were able to provide the first estimates of this systematic effect in KATRIN in-situ.
This poster will be presenting the first results of the analysis of these measurements and discuss the strategy for the final quantification and inclusion of this effect in the final neutrino mass analysis.