A comparison of MCNP6-1.0 and GEANT 4-10.1 when evaluating the neutron output of a complex real world nuclear environment: The thermal neutron facility at the Tri Universities Meson facility

Monk, Stephen; Shippen, B. Alan; Colling, B.; Cheneler, David; Hamrashdi, H. Al; Alton, Thomas Theakston

doi:10.1016/j.nimb.2017.03.112

Cited by 6 publications

(1 citation statement)

References 21 publications

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“…The maximum difference between MCNP6.1.0 and Geant4.10.2 simulations for the four scintillators is less than 5%. These differences are mainly due to differences in cross sections libraries used by MCNP6.1.0 and Geant4.10.2 [46][47][48][49][50]. Table 3.1 compares thermal neutron capture efficiency of the four scintillators at a thickness of 2 cm, 5cm and 10 cm respectively.…”

Section: Thermal Neutronsmentioning

confidence: 99%

Material optimization in dual particle detectors by comparing advanced scintillating materials using two Monte Carlo codes

Hamrashdi¹,

Cheneler²,

Monk³

2017

Nuclear Instruments and Methods in Physics Research Section A:

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A new generation of scintillating materials have been recently developed in the radiation-imaging field offering very promising dual particle detection abilities. Here, four different scintillating materials (Cs2LiYCl6:Ce (CLYC), 95% 6 Li enriched Cs2LiYCl6:Ce (CLYC-6), natural Li-glass scintillator (GS10) and liquid scintillator EJ-309) have been characterized for their abilities to attenuate thermal neutrons, fast neutrons and gamma-rays. Recent studies regarding these materials overlook these fundamental characteristics, which can directly affect the design process of advanced imaging systems such as Compton cameras and dual particle imaging systems. The response of each featured material to these three types of radiation fields was simulated with two different Monte Carlo codes, MCNP6 and Geant4. The results indicated that among these four materials, natural Li-glass scintillator (GS10) has the highest thermal neutron detection efficiency and the highest elastic scattering efficiencies. However, the attenuation of fast neutrons was found to be the most severe in EJ-309 liquid scintillator. When gamma-rays are considered, it was found that the mass attenuation coefficient of CLYC and CLYC-6 is the highest of the four materials considered when energies lower than 1 MeV are incident. It is intended that this work will lead to the design and the build of an advanced prototype three stage Compton Camera which will be sensitive to both neutrons and Gamma rays.

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