期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2020.163981
关键词
Fission detector; U-233; n_TOF; Time-of-flight
类别
资金
- French NEEDS/NACRE Project
- European Commission within HORIZON2020 via the EURATOM Project EUFRAT
- EPSRC [EP/N00700X/1] Funding Source: UKRI
- STFC [ST/N00244X/1, ST/P004423/1, ST/L005794/1] Funding Source: UKRI
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 U-233(n, gamma) 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.
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