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Title: Neutron counting with cameras

A research project is presented in which we aim at counting individual neutrons with CCD-like cameras. We explore theoretically a technique that allows us to use imaging detectors as counting detectors at lower counting rates, and transits smoothly to continuous imaging at higher counting rates. As such, the hope is to combine the good background rejection properties of standard neutron counting detectors with the absence of dead time of integrating neutron imaging cameras as well as their very good spatial resolution. Compared to Xray detection, the essence of thermal neutron detection is the nuclear conversion reaction. The released energies involved are of the order of a few MeV, while X-ray detection releases energies of the order of the photon energy, which is in the 10 KeV range. Thanks to advances in camera technology which have resulted in increased quantum efficiency, lower noise, as well as increased frame rate up to 100 fps for CMOS-type cameras, this more than 100-fold higher available detection energy implies that the individual neutron detection light signal can be significantly above the noise level, as such allowing for discrimination and individual counting, which is hard to achieve with X-rays. The time scale of CMOS-type cameras doesn'tmore » allow one to consider time-of-flight measurements, but kinetic experiments in the 10 ms range are possible. The theory is next confronted to the first experimental results. (authors)« less
Authors:
; ;  [1]
  1. Institut Laue Langevin, Grenoble (France)
Publication Date:
OSTI Identifier:
22531453
Report Number(s):
ANIMMA--2015-IO-65
TRN: US16V0223102394
Resource Type:
Conference
Resource Relation:
Conference: ANIMMA 2015: 4. International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications, Lisboa (Portugal), 20-24 Apr 2015; Other Information: Country of input: France; 4 Refs.
Research Org:
Institute of Electrical and Electronics Engineers - IEEE, 3 Park Avenue, 17th Floor, New York, N.Y. 10016-5997 (United States)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; BIOMEDICAL RADIOGRAPHY; CAMERAS; CHARGE-COUPLED DEVICES; COMPARATIVE EVALUATIONS; COUNTING RATES; DEAD TIME; KEV RANGE; MEV RANGE; NEUTRON DETECTION; NEUTRON DETECTORS; PHOTONS; QUANTUM EFFICIENCY; SPATIAL RESOLUTION; THERMAL NEUTRONS; TIME-OF-FLIGHT METHOD; VISIBLE RADIATION; X-RAY DETECTION