Title

Geant4 step towards the durability and smooth response of silicon based neutron dosimeter, and protection from thermal neutrons

Document Type

Conference Proceeding

Publisher

Institute of Electrical and Electronics Engineers Inc.

School

School of Engineering

Comments

Originally published as: Shah, A. A., Umar, A. A., Balouch, A., Ahmed, S. F., & Ali, M. M. (2019). Geant4 step towards the durability and smooth response of silicon based neutron dosimeter, and protection from thermal neutrons. Paper presented at the 2018 IEEE 5th International Conference on Engineering Technologies and Applied Sciences, ICETAS 2018. Original paper available here.

Abstract

Responses and durability of energy independent neutron dosimeters based on proton detector microchips covered with segmented multi-Thickness polythene (PE) layers are badly affected by the slow neutrons produced in the process. Here, we report the shielding of slow neutrons by using 0.9 cm thick cadmium layer, which is transparent to fast neutrons. This is achieved by using 15 MeV beam of 10 7 number of neutrons incident on poly methyl methacrylate-Aluminum-cadmium (PMMA-Al-Cd) multiple layers by means of a Monte Carlo method. The results can be used in real time dosimeters for measuring the tissue equivalent neutron doses, and for optimizing the shielding of thermal neutrons in the vicinity of proton therapy centers. © 2018 IEEE.

DOI

10.1109/ICETAS.2018.8629136

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