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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.19: Poster

Donnerstag, 13. März 2008, 14:00–16:00, Poster C3

Simulation of background electrons for the KATRIN main spectrometer. — •Henrik Arlinghaus, Volker Hannen, and Christian Weinheimer for the KATRIN collaboration — Institut für Kernphysik, Universität Münster

The KATRIN (KArlsruhe TRItium Neutrino) experiment intends to determine the mass of the electron antineutrino to within 0.2 eV/c² (90% C.L.) via a measurement of the endpoint region of the tritium beta-decay spectrum.

To obtain a precise spectrum, the rate of background electron events in the KATRIN experiment must be fully understood. In order to faciliate this, a Monte-Carlo simulation has been written using Geant4 and other tools in order to simulate various sources of background electrons (cosmic muons, radioactive decays in the materials used to construct the experiment and the experimental hall), their resulting movement through the spectrometer, and the resulting spacial distribution.

This project is supported by BMBF under contract number 05CK5MA/0.