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Showing 1 to 20 of 30 for “"Plastic Scintillator"”.
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Optimization of plastic scintillator thicknesses for online beta detection in mixed fields
… have been built to optimize the thickness of a plastic scintillator, used in whole body monitor. The simulation has been performed using MCNP/X code and different thicknesses of plastic scintillators ranging from 150 to 600 um have been used. The relationship between the thickness of the …
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A TECHNIQUE FOR MEASURING THE TIME RESPONSE AND THROUGH-PUT DELAY OF NEUTRON TIME-OF-FLIGHT (nTOF) SCINTILLATION DETECTORS USING COSMIC RADIATION IN A COINCIDENCE SYSTEM
Plastic scintillator-based neutron time-of-flight (nTOF) detectors are used to measure neutron signals from fusion experiments. These nTOF signals yield a temporal pulse width that is used to determine ion temperatures after the de-convolution of the experimentally determined detector time response …
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Neutron-deuteron elastic scattering and three-nucleon force
… neutrons, detected by a horizontal array of plastic scintillator bars, and recoil deuterons, detected by [delta] E-E (plastic scintillator - CsI) telescopes, were observed in coincidence. The resulting angular distributions for several incident neutron energies are compared with theoretical …
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Low energy neutron-proton interactions
… 0.5, 0.9, 1.5, 2.0, and 2.5 MeV at UKY, using a plastic scintillator to detect recoiling deuterons and two BGO scintillators to detect the [gamma]-ray yields at 64.6° and 106.6°. We also performed measurements of the response of BC418 plastic scintillator to low energy protons during these …
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A determination of the effective thickness of a liquid deuterium target for a quasielastic scattering experiment
… deuterons were detected with a Delta E - E (thin plastic scintillator - thick CsI calorimeter) telescope. The effective target thickness was determined to be larger than is thought physically possible. Possible reasons for the unphysical result are discussed, but further analysis is needed to …
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A new compact neutron spectrometer
… characterized. The detector is based on EJ299-33 plastic scintillator coupled to silicon photomultipliers, and a digital implementation of pulse shape discrimination is used to separate events associated with neutrons from those associated with gamma-rays. The spectrometer is suitable over the …
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An investigation into surface effects in thin film plastic scintillators
… into the luminescent response of thin film plastic scintillators as a function of their method of preparation is made. Investigations are carried out on NE102A and NE118 using four different methods of preparation. It is found that the Birks model for luminescence as a function of film …
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A novel method for modeling the neutron Time of Flight (nTOF) detector response in current mode to inertial confinement fusion experiments
… to simulate neutron and gamma-ray detection in a plastic scintillator, which produces a collision data output table about each neutron and photon interaction occurring within the scintillator; however, the post-processing code which accompanies MCNP-PoliMi assumes a detector operating in …
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Differential cross sections for the reaction He4(gamma, p)H3 from 55 to 165 MeV
… of three semiconductor detectors followed by a plastic scintillator. The proton detection system consisted of four plastic scinti11ators and was large enough to cq11ect all protons correlated with tritons in the triton system. The pulses from the calibrated detectors were used to identify the …
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Observation of Reactor Antineutrinos with the CHANDLER Detector
… antineutrino detection technology based on solid plastic scintillator, called CHANDLER, which could be used to search for short baseline reactor antineutrino oscillations. An 80 kg prototype was deployed at a commercial nuclear reactor for four and a half months with minimal shielding and no …
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Investigation of the ⁵¹V(n,d)⁵⁰Ti reaction
… proportional counters followed by a curved plastic scintillator. The proportional counters act as ΔE detectors and the scintillator acts as an energy detector. The ΔE - E method based on the Bethe - Bloch formula was used for particle identification. The spectrometer allows accumulation of …
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A compact neutron spectrometer for detecting neutrons produced by cosmic rays
… consisting of a (0.6×0.6×12.0 cm3 ) EJ-276 plastic scintillator coupled to a silicon photomultiplier (SiPM) has been designed, constructed and characterised with neutrons up to 62.5 MeV at the UCT n-lab, IRSN AMANDE and iThemba LABS fast neutron facilities. The compact detector displays good …
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Fast neutron resonance radiography for element imaging : theory and applications
… radiography has been studied and a thick (4 cm) plastic scintillator has been recommended as the neutron detector.
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Identified particle transverse momentum distributions from AU + AU collisions at 62.4 GeV per nucleon pair
… is performed using the PHOBOS Time-of-Flight plastic scintillator walls and specific energy loss in the multi-layer silicon Spectrometer, which is also used for track reconstruction and momentum-determination. The spectra are corrected for all detector-dependent effects, including feed-down …
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Characterization of the Acquisition Parameters of a Submersible Gamma-Ray Computed Tomography System
… a substantially scattering medium. Using a fast plastic scintillator and pulse-height discrimination, high-energy rays from low-activity <sup>60</sup>Co are differentiated from lower-energy rays of high-activity <sup>137</sup>Cs. By optimizing the discriminator voltage, the count time required to …
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A compact high-energy particle detector for low-cost deep space missions
… silicon photomultipliers coupled with an organic plastic scintillator as the detector. Using modern digital pulse shape discrimination and signal processing techniques, the scintillator and photomultiplier combination has been shown to accurately discriminate between the di_erent particle types …
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A novel detection system using neutron/gamma pulse shape discrimination, for use in active interrogation environments
… • The effect of angular orientation of liquid scintillators on FoM values after performing PSD techniques has been identified as well as sensitivity issues associated with the position of the nitrogen void within these detectors. • A novel gated organic plastic scintillator detector has been …
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Solar and Sterile Neutrino Physics with the Raghavan Optical Lattice
… using a ROL with indium-loaded liquid scintillator. NuLat will probe the existence of light sterile neutrinos with masses of $ \sim 1\,\mathrm{eV} $ using a ROL made from $ ^{6}\mathrm{Li} $-loaded plastic scintillator. For LENS we present an overview of the experiment and the present …
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Analysis of an Antineutrino Detector
… decay (IBD), using a highly segmented array of plastic scintillator segments to identify the positron through topology, and sheets of lithium-doped zinc sulfide to cleanly distinguish the neutron using pulse shape discrimination PSD. This dissertation talks about improvements made to the …
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PREDICTING THE SENSITIVITY OF A BERYLLIUM/SCINTILLATOR FUSION NEUTRON DETECTOR COMBINING EXPERIMENTAL METHODS AND MONTE CARLO MODELS
… to predict the sensitivity of a beryllium/scintillator fusion neutron detector. Neutrons may be captured by the beryllium via the 9Be (n, α) 6He nuclear reaction, where the product nucleus, 6He, decays by beta emission. The beta particles can be detected by close coupling scintillator with …
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