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Monte Carlo simulations and n-p differential scattering data measured with Proton Recoil Telescopes
- Source :
- Digibug. Repositorio Institucional de la Universidad de Granada, instname, EPJ Web Conf., 2019 International Conference on Nuclear Data for Science and Technology, 2019 International Conference on Nuclear Data for Science and Technology, May 2019, Beijing, China. pp.01024, ⟨10.1051/epjconf/202023901024⟩, idUS: Depósito de Investigación de la Universidad de Sevilla, Universidad de Sevilla (US), Digibug: Repositorio Institucional de la Universidad de Granada, Universidad de Granada (UGR), EPJ Web of Conferences, Vol 239, p 01024 (2020), idUS. Depósito de Investigación de la Universidad de Sevilla
- Publication Year :
- 2020
- Publisher :
- EDP Sciences, 2020.
-
Abstract
- The authors wish to thank the National Center of the INFN for Research and Development in Information and Communication Technologies (CNAF) for their computational support.<br />The neutron-induced fission cross section of U-235, a standard at thermal energy and between 0.15 MeV and 200 MeV, plays a crucial role in nuclear technology applications. The long-standing need of improving cross section data above 20 MeV and the lack of experimental data above 200 MeV motivated a new experimental campaign at the n_TOF facility at CERN. The measurement has been performed in 2018 at the experimental area 1 (EAR1), located at 185 m from the neutron-producing target (the experiment is presented by A. Manna et al. in a contribution to this conference). The U-235(n,f) cross section from 20 MeV up to about 1 GeV has been measured relative to the H-1(n,n)H-1 reaction, which is considered the primary reference in this energy region. The neutron flux impinging on the U-235 sample (a key quantity for determining the fission events) has been obtained by detecting recoil protons originating from n-p scattering in a C2H4 sample. Two Proton Recoil Telescopes (PRT), consisting of several layers of solid-state detectors and fast plastic scintillators, have been located at proton scattering angles of 25.07 degrees and 20.32 degrees, out of the neutron beam. The PRTs exploit the Delta E-E technique for particle identification, a basic requirement for the rejection of charged particles from neutron-induced reactions in carbon. Extensive Monte Carlo simulations were performed to characterize proton transport through the different slabs of silicon and scintillation detectors, to optimize the experimental set-up and to deduce the efficiency of the whole PRT detector. In this work we compare measured data collected with the PRTs with a full Monte Carlo simulation based on the Geant-4 toolkit.
- Subjects :
- Physics
010308 nuclear & particles physics
Scattering
Fission
QC1-999
Monte Carlo method
Nuclear Theory
n_TOF, proton recoil, Monte Carlo simulations, neutron time of flight
Neutron radiation
Scintillator
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
7. Clean energy
Nuclear physics
Recoil
Neutron flux
Proton transport
0103 physical sciences
Nuclear Physics - Experiment
010306 general physics
Nuclear Experiment
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Digibug. Repositorio Institucional de la Universidad de Granada, instname, EPJ Web Conf., 2019 International Conference on Nuclear Data for Science and Technology, 2019 International Conference on Nuclear Data for Science and Technology, May 2019, Beijing, China. pp.01024, ⟨10.1051/epjconf/202023901024⟩, idUS: Depósito de Investigación de la Universidad de Sevilla, Universidad de Sevilla (US), Digibug: Repositorio Institucional de la Universidad de Granada, Universidad de Granada (UGR), EPJ Web of Conferences, Vol 239, p 01024 (2020), idUS. Depósito de Investigación de la Universidad de Sevilla
- Accession number :
- edsair.doi.dedup.....f4d48d840d689768cdc74ec5bfa1b58b