A compact fission detector for fission-tagging neutron capture experiments with radioactive fissile isotopes

Research output: Contribution to journalArticlepeer-review

  • External authors:
  • James Ryan
  • Nikolay Sosnin
  • Samantha Warren
  • Tobias Wright
  • et al.


In the measurement of neutron capture cross-sections of fissile isotopes, the fission channel is a source of background which can be removed efficiently using the so-called fission-tagging or fission-veto technique. For this purpose a new compact and fast fission chamber has been developed. The design criteria and technical description of the chamber are given within the context of a measurement of the 233U(n,γ) cross-section at the n TOF facility at CERN, where it was coupled to the n TOF Total Absorption Calorimeter. For this measurement the fission detector was optimized for time resolution, minimization of material in the neutron beam and for alpha-fission discrimination. The performance of the fission chamber and its application as a fission tagging detector are discussed.

Bibliographical metadata

Original languageEnglish
JournalNuclear Instruments and Methods A
Publication statusAccepted/In press - 21 Apr 2020