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Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree

The neutron emission from 50 mm thick copper, silver and lead targets bombarded by a mixed proton/pion beam with momentum of 40 GeV/c were measured at the CERN Super Proton Synchrotron. The neutron yield and spectral fluence per incident particle on target were measured with an extended range Bonner...

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Autores principales: Agosteo, S, Birattari, C, Dimovasili, E, Foglio-Para, A, Silari, M, Ulrici, L, Vincke, H
Lenguaje:eng
Publicado: 2005
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nimb.2004.11.013
http://cds.cern.ch/record/908866
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author Agosteo, S
Birattari, C
Dimovasili, E
Foglio-Para, A
Silari, M
Ulrici, L
Vincke, H
author_facet Agosteo, S
Birattari, C
Dimovasili, E
Foglio-Para, A
Silari, M
Ulrici, L
Vincke, H
author_sort Agosteo, S
collection CERN
description The neutron emission from 50 mm thick copper, silver and lead targets bombarded by a mixed proton/pion beam with momentum of 40 GeV/c were measured at the CERN Super Proton Synchrotron. The neutron yield and spectral fluence per incident particle on target were measured with an extended range Bonner sphere spectrometer in the angular range 30-135 degree with respect to the beam direction. Monte Carlo simulations with the FLUKA code were performed to provide a priori information for the unfolding of the experimental data. The spectral fluences show two peaks, an isotropic evaporation component centred at 3 MeV and a high-energy peak sitting around 100-150 MeV. The experimental neutron yields are given in four energy bins: less than 100 keV, 0.1-20 MeV, 20-500 MeV and 0.5-2 GeV. The total yields show a systematic discrepancy of 30-50%, with a peak of 70% at the largest angles, with respect to the results of the Monte Carlo simulations, which it is believed to be mainly due to uncertainties in the beam normalization factor. Analytic expressions are given for the variation of the integral yield as a function of emission angle and of target mass number.
id cern-908866
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-9088662019-09-30T06:29:59Zdoi:10.1016/j.nimb.2004.11.013http://cds.cern.ch/record/908866engAgosteo, SBirattari, CDimovasili, EFoglio-Para, ASilari, MUlrici, LVincke, HNeutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degreeHealth Physics and Radiation EffectsThe neutron emission from 50 mm thick copper, silver and lead targets bombarded by a mixed proton/pion beam with momentum of 40 GeV/c were measured at the CERN Super Proton Synchrotron. The neutron yield and spectral fluence per incident particle on target were measured with an extended range Bonner sphere spectrometer in the angular range 30-135 degree with respect to the beam direction. Monte Carlo simulations with the FLUKA code were performed to provide a priori information for the unfolding of the experimental data. The spectral fluences show two peaks, an isotropic evaporation component centred at 3 MeV and a high-energy peak sitting around 100-150 MeV. The experimental neutron yields are given in four energy bins: less than 100 keV, 0.1-20 MeV, 20-500 MeV and 0.5-2 GeV. The total yields show a systematic discrepancy of 30-50%, with a peak of 70% at the largest angles, with respect to the results of the Monte Carlo simulations, which it is believed to be mainly due to uncertainties in the beam normalization factor. Analytic expressions are given for the variation of the integral yield as a function of emission angle and of target mass number.oai:cds.cern.ch:9088662005
spellingShingle Health Physics and Radiation Effects
Agosteo, S
Birattari, C
Dimovasili, E
Foglio-Para, A
Silari, M
Ulrici, L
Vincke, H
Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title_full Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title_fullStr Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title_full_unstemmed Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title_short Neutron production from 40 GeV/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
title_sort neutron production from 40 gev/c mixed proton/pion beam on copper, silver and lead targets in the angular range 30-135 degree
topic Health Physics and Radiation Effects
url https://dx.doi.org/10.1016/j.nimb.2004.11.013
http://cds.cern.ch/record/908866
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AT vinckeh neutronproductionfrom40gevcmixedprotonpionbeamoncoppersilverandleadtargetsintheangularrange30135degree