Simulation-based optimization of a thermal neutron detector with SERS method. (6th July 2021)

• Record Type: Journal Article
• Authors: Chai, K.K.; Wang, K.K.; Chang, S.Q.; Zhang, H.Q.
• Is Part Of: Journal of instrumentation. Volume 16:Number 7(2021)
• Publication Date: 2021-07-06
• Subjects: Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc) -- Models and simulations -- Neutron detectors (cold, thermal, fast neutrons); Scientific apparatus and instruments -- Periodicals; 502.84
• DOI: 10.1088/1748-0221/16/07/P07010
• Languages: English
• ISSNs: 1748-0221

Abstract

Abstract: A Monte Carlo simulation-based optimization of a SERS-based thermal neutron detector is aimed at improving detection efficiency for thermal neutrons. The moderator and collimator have been designed for a 241 Am- 9 Be source to maximize the thermal neutrons flux in the irradiation area. Simulated thermal neutron detection efficiency can be increased to approximately 50.5% when polyethylene is added as neutron reflector and 10 B enriched 4-MPBA is used. With Monte Carlo software GEANT4, the SERS-based thermal neutron detector has been proven to have almost no effect on original thermal neutron flux as well as the distribution and could be used for thermal neutron detection accurately.