A novel liquid-Xenon detector concept for combined fast-neutrons and gamma imaging and spectroscopy

A. Breskin, I. Israelashvili, M. Cortesi, L. Arazi, S. Shchemelinin, R. Chechik, V. Dangendorf, B. Bromberger, D. Vartsky

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

A new detector concept is presented for combined imaging and spectroscopy of fast-neutrons and gamma rays. It comprises a liquid-Xenon (LXe) converter and scintillator coupled to a UV-sensitive gaseous imaging photomultiplier (GPM). Radiation imaging is obtained by localization of the scintillation-light from LXe with the position-sensitive GPM. The latter comprises a cascade of Thick Gas Electron Multipliers (THGEM), where the first element is coated with a CsI UV-photocathode. We present the concept and provide first model-simulation results of the processes involved and the expected performances of a detector having a LXe-filled capillaries converter. The new detector concept has potential applications in combined fast-neutron and gamma-ray screening of hidden explosives and fissile materials with pulsed sources.

Original languageEnglish
Article numberC06008
JournalJournal of Instrumentation
Volume7
Issue number6
DOIs
StatePublished - 1 Jun 2012
Externally publishedYes

Keywords

  • Gamma detectors (scintillators, CZT, HPG, HgI etc)
  • Neutron detectors (cold, thermal, fast neutrons)
  • Noble-liquid detectors (scintillation, ionization two-phase)
  • Photon detectors for UV, visible and IR photons (gas)

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