Würzburg 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 31: Neutrinophysik VI
T 31.3: Vortrag
Dienstag, 20. März 2018, 17:00–17:15, Z6 - HS 0.001
Azimuthal Investigation of Spectrometer Background in the KATRIN Experiment — •Fabian Block for the KATRIN collaboration — Karlsruhe Institute of Technology (KIT), IKP, Hermann-von-Helmholtz-Platz 1, Building 402 Room 206, 76344 Eggenstein-Leopoldshafen
The Karlsruhe Tritium Neutrino (KATRIN) experiment will investigate the endpoint region of the β decay spectrum to determine the effective electron anti-neutrino mass with a sensitivity of 200 meV/c2 (90% C.L.). Therefore the β electrons are magnetically guided from the windowless gaseous tritium source through the transport and pumping section towards the tandem spectrometer section. In the tandem spectrometer section, consisting of a pre- and main spectrometer, only the electrons near the energetic endpoint of the β decay spectrum are transmitted to the focal plane detector. In order to reach the aimed sensitivity goal a thorough understanding of the background processes in both spectrometers is needed.
In this talk the results of detailed investigations of the spatial background distribution gained in long-term measurements with the full spectrometer and detector section set-up of KATRIN are presented. Especially the azimuth angle distribution is examined with statistical methods with regard to a misalignment between the spectrometer background and the focal plane detector. Furthermore a hint to a spatial deformation of the background is presented.
This work was supported by BMBF (05A17VK2) and the HGF.