Background Processes in the Electrostatic Spectrometers of the KATRIN Experiment

  • Susanne Mertens

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Susanne Mertens
    Pages 1-2
  3. Susanne Mertens
    Pages 3-27
  4. Susanne Mertens
    Pages 29-54
  5. Susanne Mertens
    Pages 55-76
  6. Susanne Mertens
    Pages 77-88
  7. Susanne Mertens
    Pages 89-101
  8. Susanne Mertens
    Pages 157-159
  9. Back Matter
    Pages 161-196

About this book

Introduction

Neutrinos continue to be the most mysterious and, arguably, the most fascinating particles of the Standard Model as their intrinsic properties such as absolute mass scale and CP properties are unknown. The open question of the absolute neutrino mass scale will be addressed with unprecedented accuracy by the Karlsruhe Tritium Neutrino (KATRIN) experiment, currently under construction.  This thesis focusses on the spectrometer part of KATRIN and background processes therein. Various background sources such as small Penning traps, as well as nuclear decays from single radon atoms are fully characterized here for the first time. Most importantly, however, it was possible to reduce the background in the spectrometer by more than five orders of magnitude by eliminating Penning traps and by developing a completely new background reduction method by stochastically heating trapped electrons using electron cyclotron resonance (ECR).  The work beautifully demonstrates that the obstacles and challenges in measuring the absolute mass scale of neutrinos can be met successfully if novel experimental tools (ECR) and novel computing methods (KASSIOPEIA) are combined to allow almost background-free tritium ß-spectroscopy.

Keywords

Direct Neutrino Mass Measurement Electron Cyclotron Resonance KASSIOPEIA Method KATRIN Experiment Low Background Tritium Spectroscopy Tritium Beta Decay

Authors and affiliations

  • Susanne Mertens
    • 1
  1. 1.Lawrence Berkeley National LaboratoryBerkeleyUSA

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-01177-6
  • Copyright Information Springer International Publishing Switzerland 2014
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-01176-9
  • Online ISBN 978-3-319-01177-6
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • About this book