A geant4 study of optimization of energy and number of primaries in a neutron source
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Date
2023
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UMT, Lahore
Abstract
Geant4 is widely used to studying the simulations of optimization of neutron source. When any light isotope hit by alpha particles, neutrons are produced. In this work, calculations are carried out with the help of Monte Carlo Methods for which a geometry setup of a neutron source composed of a cylinder (absorber) has been constructed and optimized in the Geant4 code. A complete list of physics processes has also been registered in the code for the generation of neutrons production. This work is to simulate and plots energy deposited in the interaction volume consisting of an absorber and a container. The flux of particles which are leaving this volume has also computed. The energy spectra of emerging particles He3, alpha, anti-nu-e, deuteron, e-, e+, gamma, neutron, nu-e, proton, triton etc have been managed by G4AnalysisManager and its Messenger. The Physics has also discussed for the 12 histograms i.e. total energy deposit, total kinetic energy flow, energy spectrum of emerging e+-, neutrons, protons, deuterons, alphas, ions, baryons, mesons, and leptons (neutrinos). For the optimization, number of primaries were first kept constant at 105 and particle gun energy was only changed to 10 eV, 10 MeV, 10 GeV and 10 TeV. Furthermore, later fixing the value of energy of particle gun at 10 TeV, the effect of decreased in the number of primaries i.e., 103 on energy spectra of all emerging particles are compared with the previous energy spectra with number of primaries 105.