A neutron source for IGISOL-JYFLTRAP : Design and characterisation
| Autor: | Alexander V. Prokofiev, Roberto Bedogni, Elke Passoth, Sami Rinta-Antila, Heikki Penttilä, D. Bortot, Vasileios Rakopoulos, A. Gentile, Peter Andersson, Iain Moore, Andrea Pola, Stephan Pomp, Andreas Solders, Veli Kolhinen, M.V. Introini, Tommi Eronen, Mattias Lantz, Anders Hjalmarsson, Dmitry Gorelov, Ali Al-Adili, Adolfo Esposito, J.M. Gómez-Ros, Andrea Mattera |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Bonner sphere
Physics Nuclear and High Energy Physics 010308 nuclear & particles physics Fission Hadron Nuclear Theory chemistry.chemical_element 01 natural sciences Nuclear physics Subatomär fysik chemistry 0103 physical sciences Subatomic Physics Physics::Accelerator Physics Neutron source Nuclear fusion neutron sources Physics::Atomic Physics Beryllium 010306 general physics Nuclear Experiment |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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