Background Processes in the Electrostatic Spectrometers of by Susanne Mertens

By Susanne Mertens

Neutrinos proceed to be the main mysterious and, arguably, the main interesting debris of the normal version as their intrinsic houses equivalent to absolute mass scale and CP houses are unknown. The open query of absolutely the neutrino mass scale can be addressed with unparalleled accuracy by way of the Karlsruhe Tritium Neutrino (KATRIN) test, at present lower than development.  This thesis focusses at the spectrometer a part of KATRIN and history techniques therein. a variety of historical past assets similar to small Penning traps, in addition to nuclear decays from unmarried radon atoms are absolutely characterised right here for the 1st time. most significantly, even though, it used to be attainable to minimize the history within the spectrometer through greater than 5 orders of value through putting off Penning traps and by means of constructing a totally new historical past aid procedure through stochastically heating trapped electrons utilizing electron cyclotron resonance (ECR).  The work beautifully demonstrates that the hindrances and demanding situations in measuring absolutely the mass scale of neutrinos should be met effectively if novel experimental instruments (ECR) and novel computing equipment (KASSIOPEIA) are mixed to permit nearly background-free tritium ß-spectroscopy.

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