Background Processes in the Electrostatic Spectrometers of by Susanne Mertens

By Susanne Mertens

Neutrinos stay the main mysterious and, arguably, the main attention-grabbing debris of the normal version as their intrinsic houses corresponding to absolute mass scale and CP houses are unknown. The open query of absolutely the neutrino mass scale should be addressed with unparalleled accuracy via the Karlsruhe Tritium Neutrino (KATRIN) scan, at the moment below development. This thesis focusses at the spectrometer a part of KATRIN and historical past tactics therein. a number of heritage assets comparable to small Penning traps, in addition to nuclear decays from unmarried radon atoms are absolutely characterised the following for the 1st time. most significantly, even if, it was once attainable to minimize the history within the spectrometer by means of greater than 5 orders of significance through taking away Penning traps and by means of constructing a very new history aid approach by way of stochastically heating trapped electrons utilizing electron cyclotron resonance (ECR). The paintings superbly demonstrates that the stumbling blocks and demanding situations in measuring absolutely the mass scale of neutrinos may be met effectively if novel experimental instruments (ECR) and novel computing equipment (KASSIOPEIA) are mixed to permit virtually background-free tritium ß-spectroscopy.

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