Search results for "GEANT4 simulations"

showing 3 items of 3 documents

Characterization of a neutron–beta counting system with beta-delayed neutron emitters

2016

A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known β-delayed neutron emission properties. The setup consists of BELEN-20, a 4π neutron counter with twenty 3He proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for β counting and a selftriggering digital data acquisition system. The use of delayed-neutron precursors with different neutron emission windows allowed the study of the effect of energy dependency on neutron, β and β-neutron rates. The observed effect is well reproduced by Monte Carlo simulations. The impact of this dependency on the accura…

beta-delayed neutron emission probabilityAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryGeant4 simulationsself-triggered digital data acquisition systemNuclear Experimentneutron and beta counters
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GEANT4 simulation of the neutron background of the C6D6 set-up for capture studies at n_TOF

2014

The neutron sensitivity of the C6D6 detector setup used at n_TOF facility for capture measurements has been studied by means of detailed GEANT4 simulations. A realistic software replica of the entire n_TOF experimental hall, including the neutron beam line, sample, detector supports and the walls of the experimental area has beeni mplemented in the simulations. The simulations have been analyzed in the same manner as experimental data, in particular by applying the Pulse Height Weighting Technique. The simulations have been validated against a measurement of the neutron background performed with anatC sample, showing an excellent agreement above 1 keV. At lower energies, an additional compo…

Neutron captureNuclear and High Energy PhysicsPhysics - Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaGEANT4 simulations; Neutron time of flight; Neutron background; n_TOF; Neutron captureFOS: Physical sciencesNeutronN-TOF7. Clean energy01 natural sciencesPartícules (Física nuclear)Nuclear physicsCross section (physics)0103 physical sciencesNeutronNuclear Experiment (nucl-ex)010306 general physicsGEANT4 simulations;N-TOF;Neutron time of flight;Neutron capture;Neutron backgroundNuclear ExperimentInstrumentationphysics.ins-detNuclear ExperimentGEANT4Line (formation)Particles (Nuclear physics)PhysicsBonner sphere:Energies::Energia nuclear [Àrees temàtiques de la UPC]NeutronsGEANT4 simulation:Física [Àrees temàtiques de la UPC]010308 nuclear & particles physicsDetectorFísicaNeutron sensitivityDetectorInstrumentation and Detectors (physics.ins-det)Neutron radiationNEUTRON TIME OF FLIGHTNeutron captureBackgroundDeuteriumN_TOFGEANT4 simulationsNeutron backgroundSimulation
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Characterization of a neutron-beta counting system with beta-delayed neutron emitters

2016

Abstract A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known β-delayed neutron emission properties. The setup consists of BELEN-20, a 4π neutron counter with twenty 3He proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for β counting and a self-triggering digital data acquisition system. The use of delayed-neutron precursors with different neutron emission windows allowed the study of the effect of energy dependency on neutron, β and β–neutron rates. The observed effect is well reproduced by Monte Carlo simulations. The impact of this dependency on …

Nuclear and High Energy PhysicsNeutron emissionAstrophysics::High Energy Astrophysical PhenomenaNuclear TheoryMontecarlo Mètode de01 natural sciencesSelf-triggered digital data acquisition systemNuclear physicsNeutron and beta counters0103 physical sciencesGeant4 simulationsNeutron cross sectionNeutron detectionNeutronself-triggered digital data acquisition system010306 general physicsNuclear ExperimentInstrumentationBeta-delayed neutron emission probabilityPhysicsBonner spherebeta-delayed neutron emission probability:Energies::Energia nuclear [Àrees temàtiques de la UPC]Neutronsta114ta213010308 nuclear & particles physicsNeutron stimulated emission computed tomographyNeutron temperatureMonte Carlo method:Física::Física molecular [Àrees temàtiques de la UPC]Delayed neutronneutron and beta counters
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