22–24 May 2017
Medicon Village
Europe/Stockholm timezone

A Monte Carlo study on neutron activation in neutron detectors with Ar/CO2 counting gas

23 May 2017, 10:30
20m
Gästmatsalen (Medicon Village)

Gästmatsalen

Medicon Village

Scheelevägen 2, 223 63 Lund, Sweden

Speaker

Eszter Dian (HAS Centre for Energy Research)

Description

Monte Carlo simulations using MCNP have been performed in order to study the effect of neutron activation in Ar/CO$_{2}$ neutron detector counting gas, from the perspective of decay gamma as well as prompt gamma production. A general model for neutron activation has been built in MCNP6.1. Simple analytical calculations were also done to validate the full scale MCNP6.1 model. It has been shown that in accordance with our expectation, only the $^{40}$Ar activation could have a considerable effect in terms of radiation background. However, both the simulation and the calculation agree that either the prompt gamma intensity coming from the $^{40}$Ar neutron capture or the produced $^{41}$Ar activity is still negligible.

Primary author

Eszter Dian (HAS Centre for Energy Research)

Co-authors

Kalliopi Kanaki (European Spallation Source ESS ERIC) Dr Péter Zagyvai (HAS Centre for Energy Research) Richard Hall-Wilton (European Spallation Source ERIC) Dr Szabolcs Czifrus (Budapest University of Technology and Economics, Institute of Nuclear Techniques)

Presentation materials