A directional fast neutron detector using scintillating fibers and an intensified CCD camera system

Holslin, D.; Armstrong, Anthony W.; Hagan, W.K.; Shreve, D.C.; Smith, Scott T

doi:10.1016/0168-9002(94)91616-0

Cited by 9 publications

(2 citation statements)

References 2 publications

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“…Later, other researchers continued these efforts and subsequently developed several other scintillating fiber detectors for measuring neutrons in the same cylindrical form factor. [3][4][5][6][7][8] Overtime detector developers eventually began to use boronor lithium-based fibers in some cases to increase the thermal neutron sensitivity of their instruments.…”

Section: Background Informationmentioning

confidence: 99%

Comparison of BCF-10, BCF-12, and BCF-20 scintillating fibers for use in a 1-dimensional linear sensor

Chichester

Watson

Johnson

2012

2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)

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-One-dimensional fiber-bundle arrays may prove useful in a number of radiation sensing applications where radiation detection over large areas is needed. Tests have been performed to evaluate the light generation and transmission characteristics of 15-meter long, 10-fiber bundles of BCF-10, BCF-12, and BCF-20 scintillating fibers (Saint Gobain) exposed to collimated gamma-ray sources. The test set-up used one R9800 (Hamamatsu) photomultiplier tube (PMT) at each end, with a high-speed waveform digitizer to collect data. Time constraints were imposed on the waveform data to perform timeof-flight analysis of the events in the fiber bundles, eliminating spurious noise pulses in the high gain PMTs and also allowing 1-dimensional localization of interactions along the lengths of the fiber bundles. This paper will present the results of these measurements including the attenuation coefficients of the three fiber types and the timing resolution (position uncertainty) possible for each fiber bundle when using the R9800 PMTs.

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Section: Background Informationmentioning

confidence: 99%

Comparison of BCF-10, BCF-12, and BCF-20 scintillating fibers for use in a 1-dimensional linear sensor

Chichester

Watson

Johnson

2012

2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)

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“…Past studies have reported the use of scintillating fiber detectors for fast neutron detection and spectrometry [2,3]. The use of scintillating fibers for directional discrimination of incident neutron projectiles has also been a recent area of interest [4][5][6]. Miller In this study, the GEANT4 [8] Monte Carlo simulation tool was used to evaluate directionality and performance of a fiber detector for 14-MeV neutrons.…”

Section: Introductionmentioning

confidence: 99%

14-MeV neutron directional fiber detector modeling using GEANT

Mengesha

Mascarenhas

Peel³

et al.

IEEE Nuclear Science Symposium Conference Record, 2005

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GEANT4 Monte Carlo simulation tool was used to model a prototype 14 MeV neutron fiber detector under development at the Sandia National Laboratories (SNL). Detail geometric design features of the prototype fiber detector were implemented in the modeling to assess directionality and performance of the detector. BCF-12, plastic fiber material, produced by Saint-Gobain, was used in the prototype development. The fiber consists of a core scintillating material of polystyrene with 0.48 mm × 0.48 mm dimension and an acrylic outer cladding of 0.02 mm thickness. A total of 64 square fibers, each with a cross-sectional area of 0.25 mm 2 and length of 100 mm positioned parallel with a fiber pitch of 2.3 mm, were used in the tracking of 14-MeV neutron induced recoil proton (n-p) events. Neutron induced recoil proton events, resulting energy deposition in two collinear fibers, were considered in reconstructing a two dimensional (2D) direction of incident neutrons. Energy resolution of the fiber detector was also considered to account uncertainty in direction reconstruction. Reconstructed direction has a limiting angular resolution of 3d ue to fiber dimension. Energy resolution of the fiber, which was estimated to be 10% at 14 MeV proton energy, resulted in further broadening of the reconstructed direction and the simulated angular resolution was 20˚. These values were determined when incident neutron beam makes an angle of 45 degree relative to the front surface of the detector. Comparable values were obtained at other angles of incidence. Results from the present simulation have demonstrated promising directionality of the scintillating fiber detector under development.

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Solid Scintillation Analysis

L’Annunziata

1998

Handbook of Radioactivity Analysis

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A directional fast neutron detector using scintillating fibers and an intensified CCD camera system

Cited by 9 publications

References 2 publications

Comparison of BCF-10, BCF-12, and BCF-20 scintillating fibers for use in a 1-dimensional linear sensor

Comparison of BCF-10, BCF-12, and BCF-20 scintillating fibers for use in a 1-dimensional linear sensor

14-MeV neutron directional fiber detector modeling using GEANT

Solid Scintillation Analysis

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