New exclusive CHIPS-TPT algorithms for simulation of neutron-nuclear reactions

Kosov, M.V.; Савин, Д И

doi:10.1088/1742-6596/608/1/012050

Cited by 7 publications

(4 citation statements)

References 2 publications

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“…A response function of the liquid scintillator to neutrons of different energies has been extracted for each threshold level, using the pulse height information from the digital DAQ system and a Monte Carlo calculation performed in Geant4, using the CHIPS-TPT library [14,27,28] and the light output for protons, deutrons and alpha particles from refs. [29,30].…”

Section: Tof With a Liquid Scintillatormentioning

confidence: 99%

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

et al. 2017

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Abstract.A white neutron source based on the Be(p, nx) reaction for fission studies at the IGISOL-JYFLTRAP facility has been designed and tested. 30 MeV protons impinge on a 5 mm thick water-cooled beryllium disc. The source was designed to produce at least 10 12 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.

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Section: Tof With a Liquid Scintillatormentioning

confidence: 99%

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

et al. 2017

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“…Pass 8 uses Geant4 9.4.p04 and, of the available hadronic models, only QBBC and QGS_BIC demonstrate enough differences from the standard list of QGSP_BERT_EPAX to be of interest for this study [12,13,14,15,16,17].…”

Section: Pos(icrc2017)159mentioning

confidence: 99%

Measurement of the Cosmic-ray Proton Spectrum with the Fermi Large Area Telescope

Green¹,

Hays²

2017

Proceedings of 35th International Cosmic Ray Conference — PoS(ICRC2017)

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We present the measurement of the cosmic-ray proton spectrum between 54 GeV and 9.5 TeV using 7 years of Pass 8 flight data from the Fermi Large Area Telescope (LAT). We developed a dedicated proton event selection with an acceptance of 0.25 m 2 sr. Our analysis yields a large dataset with low statistical uncertainty and low residual contamination for a spectral measurement. The systematic errors associated with the acceptance, energy measurement, Geant4 Monte-Carlo simulations are an order of magnitude larger than the statistical uncertainty. The event selection and spectral measurement of the proton analysis create the opportunity for additional proton analyses with the LAT, such as a dedicated proton anisotropy search.

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“…Earlier we implemented inelastic scattering with excitation of discrete nuclear levels including the angular distributions of scattered neutrons along with other nuclear reactions with production of multiple nuclear fragments. 2 Inelastic neutron scattering cross sections include channels where particular excited levels are unknown, cannot be separated from other levels, or cannot be represented in the ENDF-6 format. 6 In the ENDF-6 files, the events are assigned to a separate "continuum" section and are given with the energy-angle distribution for secondary neutrons.…”

Section: Continuum Neutron Inelastic Scatteringmentioning

confidence: 99%

Exclusive CHIPS-TPT algorithms for simulation of neutron-nuclear reactions

Kosov

Savin

2016

Int. J. Mod. Phys. Conf. Ser.

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The CHIPS-TPT physics library for simulation of neutron-nuclear reactions on the new exclusive level is being developed in CFAR VNIIA. The exclusive modeling conserves energy, momentum and quantum numbers in each neutron-nuclear interaction. The CHIPS-TPT algorithms are based on the exclusive CHIPS library, which is compatible with Geant4. Special CHIPS-TPT physics lists in the Geant4 format are provided. The calculation time for an exclusive CHIPS-TPT simulation is comparable to the time of the corresponding inclusive Geant4-HP simulation and much faster for mono-isotopic simulations. In addition to the reduction of the deposited energy fluctuations, which is a consequence of the energy conservation, the CHIPS-TPT libraries provide a possibility of simulation of the secondary particles correlation, e.g. secondary gammas or n-γ correlations, and of the Doppler broadening of the γ-lines in the simulated spectra, which can be measured by germanium detectors.

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New exclusive CHIPS-TPT algorithms for simulation of neutron-nuclear reactions

Cited by 7 publications

References 2 publications

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

A neutron source for IGISOL-JYFLTRAP: Design and characterisation

Measurement of the Cosmic-ray Proton Spectrum with the Fermi Large Area Telescope

Exclusive CHIPS-TPT algorithms for simulation of neutron-nuclear reactions

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