Tagging fast neutrons from an 241Am/9Be source

Scherzinger, J.; Annand, J. R. M.; Davatz, G.; Fissum, Kevin; Gendotti, U.; Hall-Wilton, R.; Håkansson, Erik; Jebali, R. Al; Kanaki, K.; Lundin, Magnus; Nilsson, Bengt‐Olof; Rosborge, A; Svensson, Henrik

doi:10.1016/j.apradiso.2015.01.003

Cited by 44 publications

(36 citation statements)

References 23 publications

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“…The tests were performed at the triple axis spectrometer ATHOS at BNC [5] (Budapest -Hungary). The preliminary test of the Multi-Blade and the γ-sensitivity measurements were performed at the Source Testing Facility (STF) [4] at the Lund University (Sweden). The demonstrator is made up of 9 cassettes, each one equipped with 32 wires and 32 strips.…”

Section: Methodsmentioning

confidence: 99%

The Multi-Blade Boron-10-based neutron detector for high intensity neutron reflectometry at ESS

et al. 2017

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The Multi-Blade is a Boron-10-based gaseous detector introduced to face the challenge arising in neutron reflectometry at pulsed neutron sources. Neutron reflectometers are the most challenging instruments in terms of instantaneous counting rate and spatial resolution. This detector has been designed to cope with the requirements set for the reflectometers at the upcoming European Spallation Source (ESS) in Sweden. Based on previous results obtained at the Institut Laue-Langevin (ILL) in France, an improved demonstrator has been built at ESS and tested at the Budapest Neutron Centre (BNC) in Hungary and at the Source Testing Facility (STF) at the Lund University in Sweden. A detailed description of the detector and the results of the tests are discussed in this manuscript.

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Section: Methodsmentioning

confidence: 99%

The Multi-Blade Boron-10-based neutron detector for high intensity neutron reflectometry at ESS

et al. 2017

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“…The aim of the current measurements was to verify the shielding behavior of the concrete in the MeV neutron energy range. The measurements were carried out using the method of neutron tagging [30] at the Source-Testing Facility will be the highlight of a future publication [31]. A general overview is given below.…”

Section: Mev Neutron Measurementsmentioning

confidence: 99%

A polyethylene-B 4 C based concrete for enhanced neutron shielding at neutron research facilities

DiJulio

Cooper-Jensen

Perrey

et al. 2017

Nuclear Instruments and Methods in Physics Research Section A:

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We present the development of a specialized concrete for neutron shielding at neutron research facilities, based on the addition of hydrogen atoms in the form of polyethylene and also B 4 C for enhancing the neutron capture properties of the concrete. We show information on the mechanical properties of the concrete and the neutronics, in particular it's relevance to modern spallation neutron sources, such as the European Spallation Source (ESS), currently under construction in Lund, Sweden. The new concrete exhibits a 15% lower mass density, a compressible strength of 50% relative to a standard concrete and a significant increase in performance of shielding against MeV neutrons and lower energies. The concrete could find application at the ESS in for example common shielding components, individual beamline shielding and instrument caves.Initial neutronic tests of the concrete, carried out at Lund University, have also verified the performance in the MeV neutron energy range and the results are presented.

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“…NE-213 is an organic liquid scintillator that has been employed for decades as a fast-neutron detector. The NE-213 liquid-scintillator detector used here has been reported upon earlier [1,18,19]. It consisted of a 62 mm long × 94 mm cylindrical aluminum "cup" fitted with a borosilicate glass optical window [20].…”

Section: Ne-213 Fast-neutron and Gamma-ray Liquid-scintillator Detectormentioning

confidence: 99%

“…We recently reported on our efforts to "tag" fast neutrons from an 241 Am/ 9 Be source [1] as the first step towards the development of a source-based fastneutron irradiation facility. Here, we report on our investigation of a 252 Cf fission-fragment fast-neutron tagging technique very similar to that reported on by Reiter et al [2].…”

Section: Introductionmentioning

confidence: 99%

Tagging fast neutrons from a 252 Cf fission-fragment source

Scherzinger

Jebali

Annand

et al. 2017

Applied Radiation and Isotopes

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Coincidence and time-of-flight measurement techniques are employed to tag fission neutrons emitted from a Cf source sealed on one side with a very thin layer of Au. The source is positioned within a gaseousHe scintillator detector. Together with α particles, both light and heavy fission fragments pass through the thin layer of Au and are detected. The fragments enable the corresponding fission neutrons, which are detected in a NE-213 liquid-scintillator detector, to be tagged. The resulting continuous polychromatic beam of tagged neutrons has an energy dependence that agrees qualitatively with expectations. We anticipate that this technique will provide a cost-effective means for the characterization of neutron-detector efficiency in the energy range 1-6MeV.

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Tagging fast neutrons from an 241Am/9Be source

Cited by 44 publications

References 23 publications

The Multi-Blade Boron-10-based neutron detector for high intensity neutron reflectometry at ESS

The Multi-Blade Boron-10-based neutron detector for high intensity neutron reflectometry at ESS

A polyethylene-B 4 C based concrete for enhanced neutron shielding at neutron research facilities

Tagging fast neutrons from a 252 Cf fission-fragment source

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