The sensitivity of LaBr3:Ce scintillation detectors to low energy neutrons: Measurement and Monte Carlo simulation

J. L. Tain, J. Agramunt, A. Algora, A. Aprahamian, D. Cano-Ott, L. M. Fraile, C. Guerrero, M. D. Jordan, H. Mach, T. Martinez, E. Mendoza, M. Mosconi, R. Nolte

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The neutron sensitivity of a cylindrical ∅1.5 in.x 1.5 in. LaBr3:Ce scintillation detector was measured using quasi-monoenergetic neutron beams in the energy range from 40 keV to 2.5 MeV. In this energy range the detector is sensitive to γ-rays generated in neutron inelastic and capture processes. The experimental energy response was compared with Monte Carlo simulations performed with the Geant4 simulation toolkit using the so-called High Precision Neutron Models. These models rely on relevant information stored in evaluated nuclear data libraries. The performance of the Geant4 Neutron Data Library as well as several standard nuclear data libraries was investigated. In the latter case this was made possible by the use of a conversion tool that allowed the direct use of the data from other libraries in Geant4. Overall it was found that there was good agreement with experiment for some of the neutron data bases like ENDF/B-VII.0 or JENDL-3.3 but not with the others such as ENDF/B-VI.8 or JEFF-3.1.

Original languageEnglish
Pages (from-to)17-24
Number of pages8
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume774
DOIs
Publication statusPublished - Feb 21 2015

    Fingerprint

Keywords

  • Geant4 simulations
  • Lanthanum bromide
  • Neutron sensitivity
  • Nuclear data libraries
  • Scintillation detectors

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this