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Gamma-Insensitive Fast Neutron Detector with Spectral Source Identification Potential

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AUTHOR:
Rico Chandra
Rico Chandra earned a PhD in detector R&D carried out at CERN, then co-founded Arktis Radiation Detectors Ltd, a spin-off company dedicated to commercialising novel detection technologies developed for fundamental science. Rico’s past work experience includes consulting work performed for the European Commission in security questions, strategic consulting of several SMEs, and technology consulting as a Council member of the Gerson Lehrman Group.

AUTHOR:
Giovanna Davatz
Giovanna Davatz has broad-based experience in experimental physics, software engineering, and Monte-Carlo simulation programs. Giovanna earned her PhD in particle physics from ETH Zurich while stationed at CERN, Geneva working on the Large Hadron Collider (LHC). She is co-founder of Arktis and member of the board. Her past work experience includes senior research assistantship at ETH Zurich.

AUTHOR:
Alexander Howard
Alexander Howard is a former CERN fellow and since 2001 a member of the GEANT4 collaboration, responsible for the implementation of neutron interaction, production, and validation into the most widely used radiation interaction Monte-Carlo. Alex earned a PhD in particle physics in 1997 and went on to develop noble gas scintillation detectors within the UK Dark Matter Collaboration (UKDMC). After a temporary lectureship at Imperial College London and project management of several group projects, he joined Arktis in 2007.

AUTHOR:
Ulisse Gendotti


ABSTRACT:
Calculations are presented to support the claim that fast neutron detection systems can achieve higher performance in detecting weak neutron sources than conventional thermal neutron detection systems involving moderators. Minimum Detectable Limits (MDL) are used as a comparative metric, more representative than the metric of absolute sensitivity, which does not take into account the influence of natural backgrounds. Monte Carlo simulations are used to show that heavily shielded neutron sources emit a substantial fraction of fast neutrons. Arguments are presented to support the claim that fast neutron detection systems are superior at defeating heavy neutron shielding than thermal systems.

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SUGGESTED CITATION:
Chandra, Rico et al. “Gamma-Insensitive Fast Neutron Detector with Spectral Source Identification Potential.” Homeland Security Affairs, Best Papers from the IEEE Conference on Technologies for Homeland Security (January 2011)
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