Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 8: Neutrinophysik V
T 8.8: Vortrag
Montag, 19. März 2018, 17:55–18:10, Z6 - HS 0.001
Modifications of the KATRIN Simulation Software for Sterile Neutrino Search — •Madlen Steven for the KATRIN collaboration — Max Planck Institute for Physics — Technical University of Munich
The Karlsruhe Tritium Neutrino (KATRIN) experiment is designed to improve the ν-mass sensitivity to about 0.2 eV/c2 (90% C.L.) by measuring the shape of the endpoint of the tritium β-decay spectrum.
By extending the measurement interval to the whole spectrum it will also be possible to search for so called sterile neutrinos. This hypothetical fourth neutrino flavour eigenstate does not interact via the weak, strong and electromagnetic force. A corresponding mass eigenstate of order keV could be observed as a kink in the β-decay spectrum.
As the current modelling software and in particular the Source and Spectrum Computation (SSC) package of the KATRIN experiment considers only the endpoint of the tritium spectrum, it has to be extended for the sterile neutrino search.
This talk will present the basic idea of this new simulation software and in particular focus on detector-related effects. First results for the detector response to monoenergetic electrons obtained by using the KATRIN simulation software Kassiopeia will be shown.