Design and experimental validation of a Bonner Sphere Spectrometer based on Dysprosium activation foils

Bedogni, R.; Ferrari, P.; Gualdrini, G.; Esposito, A.

doi:10.1016/j.radmeas.2010.04.005

Cited by 35 publications

(22 citation statements)

References 12 publications

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“…Interestingly, the effect of the lead above 10 MeV also extends to other positions that may be reached by thermalized secondary neutrons from (n, xn) reactions in the lead. Such a response increase in the 10-100 MeV region does not exist in pure polyethylene moderators, such as conventional Bonner Spheres [15] of any diameter. For this experiment CYSP was not equipped to see thermal neutrons because the studied monochromatic beams were all epithermal.…”

Section: Introductionmentioning

confidence: 94%

Experimental test of a newly developed single-moderator, multi-detector, directional neutron spectrometer in reference monochromatic fields from 144keV to 16.5MeV

Bedogni¹,

Gómez-Ros²,

Pola³

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Introductionmentioning

confidence: 94%

Experimental test of a newly developed single-moderator, multi-detector, directional neutron spectrometer in reference monochromatic fields from 144keV to 16.5MeV

Bedogni¹,

Gómez-Ros²,

Pola³

et al. 2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…The error bars combine the counting statistics and the response matrix overall uncertainty. The latter contribution provisionally was set to +3 % on the basis of previous experience with the Bonner spheres and the SP 2 (10,13) . However, this data will be accurately derived on the basis of an already planned calibration campaign with quasi-monoenergetic neutron fields.…”

Section: Resultsmentioning

confidence: 99%

Development of single-exposure, multidetector neutron spectrometers: the NESCOFI@BTF project

Bedogni

Gómez-Ros

Bortot

et al. 2013

Radiation Protection Dosimetry

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NESCOFI@BTF is a 3-y project (2011-13) supported by the Scientific Commission 5 of INFN (Italy). The target is the development of neutron spectrometers similar to the Bonner spheres, in terms of response energy interval and accuracy, but able to determine the neutron spectrum in only one exposure. These devices embed multiple (10 to 30) thermal neutron detectors (TNDs) within a single moderator. Two prototypes, called SPherical SPectrometer (SP(2)) and cylindrical spectrometer (CYSP), have been set up. Whilst SP(2) has spherical geometry and nearly isotropic response, the CYSP has cylindrical geometry and is intended to be used as a directional spectrometer. Suitable active TNDs will be embedded in the final version of the devices. The resulting instruments could be used as real-time neutron spectrometers in neutron-producing facilities. This communication describes the design criteria, numerical analysis, experimental issues, state-of-the-art and future developments connected with the development of these instruments.

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“…This system consists of several polyethylene spheres with different diameters and thermal neutron detector in their centers. BSS has basic advantages of isotropic response and cover a wide energy range from thermal up to several of MeV and easy operating [2][3][4][5][6]. An active detector of thermal neutron, usually proportional counter filled with 3 He or 3 BF detector, is placed at the center of these spheres.…”

Section: Introductionmentioning

confidence: 99%

“…BSS has basic advantages of isotropic response and cover a wide energy range from thermal up to several of MeV and easy operating [2][3][4][5][6]. An active detector of thermal neutron, usually proportional counter filled with 3 He or 3 BF detector, is placed at the center of these spheres. However, pulse pileup and dead time effects are drawbacks of using active detector in high intensity or pulsed radiation fields [7].…”

Section: Introductionmentioning

confidence: 99%

Neural network unfolding of neutron spectrum measured by gold foil-based Bonner sphere

Mohammadi

Hakimabad

Rafat-Motavalli

2014

J Radioanal Nucl Chem

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Bonner sphere spectrometer (BSS) based on gold foils, as thermal neutron detectors, is one of the common device for neutron spectrometry. In this paper, the response functions of the Bonner spheres were determined for neutrons with energies ranging from thermal up to 20 MeV using Monte Carlo code. To verify the simulated response functions, the spheres of BSS were irradiated with 241 Am-Be neutron source at the Ferdowsi University of Mashhad and the activities of the gold foils were measured. Then the artificial neural network was applied for neutron spectrum unfolding. The results showed a good agreement between unfolded and reference spectrum of ISO 8529-1.

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Design and experimental validation of a Bonner Sphere Spectrometer based on Dysprosium activation foils

Cited by 35 publications

References 12 publications

Experimental test of a newly developed single-moderator, multi-detector, directional neutron spectrometer in reference monochromatic fields from 144keV to 16.5MeV

Experimental test of a newly developed single-moderator, multi-detector, directional neutron spectrometer in reference monochromatic fields from 144keV to 16.5MeV

Development of single-exposure, multidetector neutron spectrometers: the NESCOFI@BTF project

Neural network unfolding of neutron spectrum measured by gold foil-based Bonner sphere

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