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Anders Oskarsson

Professor emeritus

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Status of the Design of an Annihilation Detector to Observe Neutron-Antineutron Conversions at the European Spallation Source

Author

  • Sze Chun Yiu
  • Bernhard Meirose
  • Joshua Barrow
  • Christian Bohm
  • Gustaaf Brooijmans
  • Katherine Dunne
  • Elena S. Golubeva
  • David Milstead
  • AndrĂ© Nepomuceno
  • Anders Oskarsson
  • Valentina Santoro
  • Samuel Silverstein
Show all

Summary, in English

The goal of the HIBEAM/NNBAR program is to search for baryon number violation via the conversion or oscillation of neutrons into sterile neutrons and/or antineutrons at the European Spallation Source. A key experimental component of the program is the construction of an annihilation detector to directly observe the production of an antineutron following the oscillation. Design studies for the annihilation detector are presented. The predicted response of the detector models are studied using GEANT4 simulations made with Monte Carlo simulations of the annihilation signal topology and cosmic ray backgrounds. Particle identification and sensitive discriminating observables, such as invariant mass and sphericity, are shown.

Department/s

  • Particle and nuclear physics

Publishing year

2022

Language

English

Publication/Series

Symmetry

Volume

14

Issue

1

Document type

Article

Publisher

MDPI AG

Topic

  • Subatomic Physics

Keywords

  • Baryon number violation
  • Detector simulation
  • Neutron-antineutron oscillations
  • Particle detectors
  • Sterile neutrons

Status

Published

ISBN/ISSN/Other

  • ISSN: 2073-8994