Methodology and Application of High Performance Electrostatic Field Simulation in the KATRIN Experiment

Public Deposited

Downloadable Content

Download PDF
Request Version for Screen Reader
Last Modified
  • March 19, 2019
Creator
  • Corona, Thomas
    • Affiliation: College of Arts and Sciences, Department of Physics and Astronomy
Abstract
  • The Karlsruhe Tritium Neutrino (KATRIN) experiment is a tritium beta decay experiment designed to make a direct, model independent measurement of the electron neutrino mass. The experimental apparatus employs strong (O[T]) magnetostatic and (O[10<super>5</super> V/m]) electrostatic fields in regions of ultra high (O[10<super>-11</super> mbar]) vacuum in order to obtain precise measurements of the electron energy spectrum near the endpoint of tritium beta-decay. The electrostatic fields in KATRIN are formed by multiscale electrode geometries, necessitating the development of high performance field simulation software. To this end, we present a Boundary Element Method (BEM) with analytic boundary integral terms in conjunction with the Robin Hood linear algebraic solver, a nonstationary successive subspace correction (SSC) method. We describe an implementation of these techniques for high performance computing environments in the software KEMField, along with the geometry modeling and discretization software KGeoBag. We detail the application of KEMField and KGeoBag to KATRIN's spectrometer and detector sections, and demonstrate its use in furthering several of KATRIN's scientific goals. Finally, we present the results of a measurement designed to probe the electrostatic profile of KATRIN's main spectrometer in comparison to simulated results.
Date of publication
Subject
DOI
Identifier
Resource type
Rights statement
  • In Copyright
Advisor
  • Heitsch, Fabian
  • Henning, Reyco
  • Champagne, Arthur
  • Formaggio, Joseph
  • Wilkerson, John
Degree
  • Doctor of Philosophy
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2014
Language
Publisher
Place of publication
  • Chapel Hill, NC
Access right
  • There are no restrictions to this item.
Date uploaded
  • April 22, 2015

Relations

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details Corona_unc_0153D_14909.pdf 2019-04-10 Public Download