Recent Developments in the Specification and Achievement of Realistic Neutron Calibration Fields

Chartier, J.-L.; Jánský, Bohumil; Kluge, H.-J.; Schraube, H.; Wiegel, B.

doi:10.1093/oxfordjournals.rpd.a031965

Cited by 18 publications

(5 citation statements)

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“…Thus, if calibrations of neutron measuring devices to be used at workplaces with the ISO 8529 series standard fields become less meaningful. Therefore, the simulated workplace neutron standard fields must be created to be able to calibrate neutron measuring devices with neutron spectra similar to those at real workplaces [3,4].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Simulated Workplace Neutron Standard Fields

Quynh

Linh³

et al. 2020

Comm. in Phys.

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This paper presents the development of simulated workplace neutron standard fields at the Institute for Nuclear Science and Technology with the 241Am-Be source moderated by polyethylene spheres with diameters of 15 cm and 30 cm. The characterization of the standard fields (in terms of neutron fluence rates and neutron ambient dose equivalent rates) was performed using Bonner sphere spectrometer system together with MAXED and FRUIT unfolding codes. The related quantities such as neutron dose equivalent-averaged energies and fluence-to-ambient dose equivalent conversion coefficients were also determined. The discrepancies of values are satisfied the standard uncertainty criteria as recommended by the International Standard Organization 12789 series. It implies that the simulated workplace neutron standard fields can be applied in the practical works for calibration purposes.

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Section: Introductionmentioning

confidence: 99%

Characteristics of Simulated Workplace Neutron Standard Fields

Quynh

Linh³

et al. 2020

Comm. in Phys.

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“…The purpose of the CANEL accelerator-based facility is to produce a realistic neutron spectrum from a nearly monoenergetic neutron source. In the initial configuration, a 14.6 MeV neutron source was created through the T(d, n) reaction with 150 keV deuterons [1,14]. CANEL was then upgraded in order to reduce the contribution to the dose equivalent of the remaining non-moderated high-energetic neutrons.…”

Section: The Mixed Neutron-photon Radiation Field Of the Canel/t400 F...mentioning

confidence: 99%

Simulated workplace neutron fields

Lacoste¹,

Taylor²,

Röttger³

2011

Metrologia

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The use of simulated workplace neutron fields, which aim at replicating radiation fields at practical workplaces, is an alternative solution for the calibration of neutron dosemeters. They offer more appropriate calibration coefficients when the mean fluence-to-dose equivalent conversion coefficients of the simulated and practical fields are comparable. Intensive Monte Carlo modelling work has become quite indispensable for the design and/or the characterization of the produced mixed neutron/photon fields, and the use of Bonner sphere systems and proton recoil spectrometers is also mandatory for a reliable experimental determination of the neutron fluence energy distribution over the whole energy range. The establishment of a calibration capability with a simulated workplace neutron field is not an easy task; to date only few facilities are available as standard calibration fields.

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“…calibration field is of great practical importance (39). As an example we discuss one example based on a well-designed moderator around a lithium target bombarded by monoenergetic protons.…”

Section: Design and Optimization Of Experiments The Practical Realismentioning

confidence: 99%

Computational Dosimetry

Siebert¹,

Thomas²

1997

Radiation Protection Dosimetry

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%is is an informal report intended primarily for internal or limited external istribution. The opinions and conclusions stated are those of the author and may r may not be those of the Laboratory.iork performed under the auspices of the U.S. 36The paper presents a definition of the term "Computational Dosimetry" that is interpreted as the subdiscipline of computational physics which is devoted to radiation metrology. It is shown that computational dosimetry is more than a mere collection of computational methods. Computational simulations directed at basic understanding and modelling are important tools provided by computational dosimetry, while another very important application is the support that it can give to the design, optimization and analysis of experiments. However, the primary task of computational dosimetry is to reduce the variance in the determination of absorbed dose (and its related quantities), for example in the disciplines of radiological protection and radiation therapy. In this paper emphasis is given to the discussion of potential pitfalls in the applications of computational dosimetry and recommendations are given for their avoidance. The need for comparison of calculated and experimental data whenever possible is strongly stressed.

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Recent Developments in the Specification and Achievement of Realistic Neutron Calibration Fields

Cited by 18 publications

References 0 publications

Characteristics of Simulated Workplace Neutron Standard Fields

Characteristics of Simulated Workplace Neutron Standard Fields

Simulated workplace neutron fields

Computational Dosimetry

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