Improvement of a Compact Fast Neutron Generator for Imaging Applications

Kromer, Heiko; Adams, R.E.; Soubelet, Benoit; Zboray, Robert; Prasser, H.-M.

doi:10.1109/nssmic.2018.8824470

Cited by 2 publications

(3 citation statements)

References 7 publications

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“…It is a custom device based on the D-D fusion reaction developed at the Paul Scherrer Institute with an emphasis on imaging, with its most notable feature being a relatively small emitting spot size of roughly 2 mm diameter intended to reduce imaging blur. The techniques used to quantify the emitting spot size, the absolute neutron output, and the flux distribution within the room where the device is operated are described in [14] and [15]. Details about the source operating principles and design, such as the ion source and rotating ion beam target, are also described there.…”

Section: D-d Neutron Sourcementioning

confidence: 99%

“…That yield was measured as a function of time using an LB6411 neutron probe. Simulations were used to calibrate the LB6411 response relative to the absolute total neutron output, as described in [15]. The calibration enables determination of the rate of neutrons emitted at the emitting spot itself, before attenuation by nearby structures (e.g.…”

Section: Jinst 16 P02021mentioning

confidence: 99%

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A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

et al. 2021

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For radiography applications using fast neutrons simultaneously with gammas we have developed a detector with 16 stilbene crystals in a 4×4 2D array with a 5 mm pitch and a depth of 25 mm. The crystal array is read out by Silicon photomultipliers and custom signal processing electronics. The detector prototype was tested using a custom D-D fast neutron generator at the Paul Scherrer Institute. By applying a pulse shape discrimination algorithm the detector is able to detect and distinguish fast neutrons and gammas simultaneously. Various attenuating samples placed between the source and detector with different materials and thicknesses were tested and the measured macroscopic fast neutron cross sections were compared to what was expected. Deviations were studied with the help of detailed Geant4 simulations. The detection efficiency for D-D fast neutrons was measured to be around 10%.

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Section: D-d Neutron Sourcementioning

confidence: 99%

Section: Jinst 16 P02021mentioning

confidence: 99%

A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

et al. 2021

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“…Significant simulation and experimental efforts were made in order to characterize as much as possible the emitting spot size, the absolute neutron output, and the flux distribution within the room where the device is operated. These characterization techniques are described in [9] and [10]. This section aims to give a short overview of the device and some important characteristics as they relate to the measurements described in this paper.…”

Section: D-d Neutron Sourcementioning

confidence: 99%

A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

Adams,

Günther,

Höflich

et al. 2020

Preprint

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A: For radiography applications using fast neutrons simultaneously with gammas we have developed a detector with 16 stilbene crystals in a 4×4 2D array with 5 mm pitch and a depth of 25 mm. The crystal array is read out by Silicon photomultipliers and custom signal processing electronics. The detector prototype was tested using a custom D-D fast neutron generator at the Paul Scherrer Institute. By applying a pulse shape discrimination algorithm the detector is able to detect and distinguish fast neutrons and gammas simultaneously. Various attenuating samples placed between the source and detector with different composition and thickness were tested and the measured macroscopic fast neutron cross sections were compared to the expected cross sections. Deviations were studied with the help of detailed Geant4 simulations. The detection efficiency for D-D fast neutrons was measured to be around 10%. K: Neutron detectors (cold, thermal, fast neutrons), Neutron radiography, Inspection with gamma rays, Scintillators and scintillating fibres and light guides

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Improvement of a Compact Fast Neutron Generator for Imaging Applications

Cited by 2 publications

References 7 publications

A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

A 2D pixelated stilbene scintillator detector array for simultaneous radiography with fast neutrons and gammas

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