6533b85dfe1ef96bd12bf219
RESEARCH PRODUCT
A neutron source for IGISOL-JYFLTRAP : Design and characterisation
Alexander V. ProkofievRoberto BedogniElke PassothSami Rinta-antilaHeikki PenttiläD. BortotVasileios RakopoulosA. GentilePeter AnderssonIain MooreAndrea PolaStephan PompAndreas SoldersVeli KolhinenM.v. IntroiniTommi EronenMattias LantzAnders HjalmarssonDmitry GorelovAli Al-adiliAdolfo EspositoJ.m. Gómez-rosAndrea Matterasubject
Bonner spherePhysicsNuclear and High Energy Physics010308 nuclear & particles physicsFissionHadronNuclear Theorychemistry.chemical_element01 natural sciencesNuclear physicsSubatomär fysikchemistry0103 physical sciencesSubatomic PhysicsPhysics::Accelerator PhysicsNeutron sourceNuclear fusionneutron sourcesPhysics::Atomic PhysicsBeryllium010306 general physicsNuclear Experimentdescription
A white neutron source based on the Be(p, nx) reaction for fission studies at the IGISOL-JYFLTRAP facility has been designed and tested. 30MeV protons impinge on a 5mm thick water-cooled beryllium disc. The source was designed to produce at least 1012 fast neutrons/s on a secondary fission target, in order to reach competitive production rates of fission products far from the valley of stability. The Monte Carlo codes MCNPX and FLUKA were used in the design phase to simulate the neutron energy spectra. Two experiments to characterise the neutron field were performed: the first was carried out at The Svedberg Laboratory in Uppsala (SE), using an Extended-Range Bonner Sphere Spectrometer and a liquid scintillator which used the time-of-flight (TOF) method to determine the energy of the neutrons; the second employed Thin-Film Breakdown Counters for the measurement of the TOF, and activation foils, at the IGISOL facility in Jyväskylä (FI). Design considerations and the results of the two characterisation measurements are presented, providing benchmarks for the simulations. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-08-01 |