Spatial distribution of moderated neutrons along a Pb target irradiated by high-energy protons

Fragopoulou, M.; Manolopoulou, M.; Stoulos, S.; Brandt, R.; Westmeier, W.; Kulakov, B.A.; Krivopustov, M.I.; Debeauvais, M.; Adloff, J.C.; Valasiadou, M. Zamani

doi:10.1016/j.nima.2006.01.055

Cited by 9 publications

(5 citation statements)

References 15 publications

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“…Therefore, SSNTDs were placed along both of the spallation sources, parallel to the target axis above the paraffin and the U-blanket. Thermal-epithermal and intermediate-fast neutrons were measured (21,22) . The neutron spatial distribution along the target axis for both spallation sources was found to be similar, for each spallation source, for all proton beam energies.…”

Section: Resultsmentioning

confidence: 99%

Dose Measurements around Spallation Neutron Sources

Fragopoulou

Stoulos

Manolopoulou

et al. 2020

hnps

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Neutron dose measurements and calculations around spallation sources are of importance for an appropriate shielding study. Two spallation so urces, consisted of Pb target, have been irradiated by high-energy proton beams, delivered by the Nuclotron accelerator (JINR), Dubna. Dose measurements of the neutrons produced by the two spallation sources were performed using Solid State Nuclear Track D etectors (SSNTDs). In addition, the neutron dose after polyethylene and concrete was calculated using phenomenological model based on empirical relations applied in high energy Physics.Analytical and experimental neutron benchmark analysis has been performed using the transmission factor. A comparison of experimental results with calculations is given.

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Section: Resultsmentioning

confidence: 99%

Dose Measurements around Spallation Neutron Sources

Fragopoulou

Stoulos

Manolopoulou

et al. 2020

hnps

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, SSNTDs were placed along both the spallation sources, parallel to the target axis above the paraffin and the U-blanket. Thermalepithermal and intermediate-fast neutrons were measured (21,22) . The neutron spatial distribution along the target axis for both spallation sources was found to be similar across all proton beam energies.…”

Section: Resultsmentioning

confidence: 99%

“…The total neutron ambient dose equivalent for the case of the Gamma-2 set-up remained higher than radiation protection standards. In the case of the 'E þ T' set-up, the level of neutron ambient dose equivalent cannot be compared with radiation protection standards because it is less than the lower detection limit, which is 5 Â 10 2 tracks cm 22 . According to dose calibrations of the detector, this track number corresponds to 1.5 mSv for thermal neutrons and $50 mSv for fast neutrons.…”

Section: Resultsmentioning

confidence: 99%

Dose measurements around spallation neutron sources

Fragopoulou

Stoulos

Manolopoulou

et al. 2008

Radiation Protection Dosimetry

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Neutron dose measurements and calculations around spallation sources appear to be of great importance in shielding research. Two spallation sources were irradiated by high-energy proton beams delivered by the Nuclotron accelerator (JINR), Dubna. Neutrons produced by the spallation sources were measured by using solid-state nuclear track detectors. In addition, neutron dose was calculated after polyethylene and concrete, using a phenomenological model based on empirical relations applied in high-energy physics. The study provides an analytical and experimental neutron benchmark analysis using the transmission factor and a comparison between the experimental results and calculations.

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“…The fissioning targets, about 100 μg/cm 2 in thickness, were evaporated on Makrofol foils. Targets of 235 U and 232 Th were used in order to study the slow and the fast component (above 2 MeV) of the neutron spectrum [7]. CR39 used as light particle detector was calibrated with known neutron doses in the frame of EURADOS actions on neutron dosimetry [8].…”

Section: Methodsmentioning

confidence: 99%

Radiation protection strategies in the environment of a spallation neutron source

Fragopoulou¹,

Zamani²

2018

Nucl Med Biomed Imaging

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Due to the high level of radiation generated by a spallation source, the construction of an effective shielding is necessary for radiation protection purposes. Neutron dose measurements and calculations around spallation sources are of great importance for an appropriate shielding study. Calculations of the spallation neutron attenuation by various shielding materials using a phenomenological model are presented. The calculations were compared with measurements using Solid State Nuclear Track (SSNTDs) as particle and fission detectors.

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Spatial distribution of moderated neutrons along a Pb target irradiated by high-energy protons

Cited by 9 publications

References 15 publications

Dose Measurements around Spallation Neutron Sources

Dose Measurements around Spallation Neutron Sources

Dose measurements around spallation neutron sources

Radiation protection strategies in the environment of a spallation neutron source

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