Neutron measurements with Time-Resolved Event-Counting Optical Radiation (TRECOR) detector

M. Brandis*, D. Vartsky, V. Dangendorf, B. Bromberger, D. Bar, B. Goldberg, K. Tittelmeier, E. Friedman, A. Czasch, I. Mardor, I. Mor, M. Weierganz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Results are presented from the latest experiment with a new neutron/gamma detector, a Time-Resolved, Event-Counting Optical Radiation (TRECOR) detector. It is composed of a scintillating fiber-screen converter, bending mirror, lens and Event-Counting Image Intensifier (ECII), capable of specifying the position and time-of-flight of each event. TRECOR is designated for a multipurpose integrated system that will detect Special Nuclear Materials (SNM) and explosives in cargo. Explosives are detected by Fast-Neutron Resonance Radiography, and SNM by Dual Discrete-Energy gamma-Radiography. Neutrons and gamma-rays are both produced in the 11B(d,n+γ)12C reaction. The two detection modes can be implemented simultaneously in TRECOR, using two adjacent radiation converters that share a common optical readout. In the present experiment the neutron detection mode was studied, using a plastic scintillator converter. The measurements were performed at the PTB cyclotron, using the 9Be(d,n) neutron spectrum obtained from a thick Be-target at Ed ∼ 13 MeV. The basic characteristics of this detector were investigated, including the Contrast Transfer Function (CTF), Point Spread Function (PSF) and elemental discrimination capability.

Original languageEnglish
Article numberC04003
JournalJournal of Instrumentation
Volume7
Issue number4
DOIs
StatePublished - Apr 2012
Externally publishedYes

Keywords

  • Detection of explosives
  • Inspection with gamma rays
  • Neutron detectors (cold, thermal, fast neutrons)
  • Neutron radiography

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