Response of BC-418 plastic scintillator to low-energy protons

Daub, Brian; Henzl, V.; Kovash, M. A.; Matthews, J. L.; Miller, Z.W.; Shoniyozov, Khayrullo; Yang, Hong-Wei

doi:10.1016/j.nima.2012.11.025

Cited by 8 publications

(7 citation statements)

References 4 publications

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“…When the coincidence gating is removed (as in Figure 9) there are enough events to measure the upper edge corresponding to fully back-scattered neutrons off carbon nuclei. Table 1 Figure 10 is extended to lower kinetic energies, there would be a non-zero amount of light yield for carbon nuclei at rest, similar to results from [23]. This non-physical result might be due to nonlinearities in the electron equivalent calibration below 31 keVee, [24,28].…”

Section: Light Response Of Recoil Carbon Nucleimentioning

confidence: 59%

“…These "dark" reactions contribute to scattering and poor resolution. As mentioned in Section 5, recent work [23] has identified a strong deviation from Birks' light response equation [22]. Even the formula of Madey et al [30] does not have a zero crossing point for the light yield from zero-energy charged particles.…”

Section: Light Response Of Recoil Carbon Nucleimentioning

confidence: 94%

“…Improvements to this process of calibrating the light response may involve measurements of lower photoabsorption peaks near 15 or 20 keV, or by calibrating the deposition of a small amount of energy into the scintillator by also measuring the angle of scattered particles [23]. The light response curve for NaI, Anthracene, and Pilot B plastic was measured using low energy electrons impinging the surface of these scintillators [28].…”

Section: Energy and Position Resolutionmentioning

confidence: 99%

“…Both the resolution due to the thickness (6.7% resolution) and the timing resolution of δt = 1 ns contributes to the overall energy resolution for the large modules.different sizes. Variations of the attenuation length between modules of the same size are likely due to slight differences in the PMT coupling, defects in the plastic, or wrinkles in the wrapping.The light response curve from low-energy neutrons has been mapped down to a few keVee and exhibits a deviation from Birks formula[22], whereby the light response curve becomes unphysical near zero[23]. For consistency, we use the standard convention that 1 MeVee is the light yield induced in the EJ-200 scintillating plastic from a 1 MeV electron.…”

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confidence: 99%

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Performance of the Versatile Array of Neutron Detectors at Low Energy (VANDLE)

Peters

Ilyushkin

Madurga

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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highly efficient plastic-scintillator array constructed for decay and transfer reaction experimental setups that require neutron detection. The versatile and modular design allows for customizable experimental setups including beta-delayed neutron spectroscopy and (d,n) transfer reactions in normal and inverse kinematics. The neutron energy and prompt-photon discrimination is determined through the time of flight technique. Fully digital data acquisition electronics and integrated triggering logic enables some VANDLE modules to achieve an intrinsic efficiency over 70% for 300-keV neutrons, measured through two different methods. A custom Geant4 simulation models aspects of the detector array and the experimental setups to determine efficiency and detector response. A low detection threshold, due to the trigger logic and digitizing data acquisition, allowed us to measure the light-yield response curve from elastically-scattered carbon nuclei inside the scintillating plastic from incident neutrons with kinetic energies below 2 MeV.

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Section: Light Response Of Recoil Carbon Nucleimentioning

confidence: 59%

Section: Light Response Of Recoil Carbon Nucleimentioning

confidence: 94%

Section: Energy and Position Resolutionmentioning

confidence: 99%

mentioning

confidence: 99%

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Performance of the Versatile Array of Neutron Detectors at Low Energy (VANDLE)

Peters

Ilyushkin

Madurga

et al. 2016

Nuclear Instruments and Methods in Physics Research Section A:

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“…Yet, the light produced by these detectors is not linear with neutron energy. Moreover, neutron reactions on the 12 C must be discriminated [9][10][11][12]. Finally, their detection efficiency cannot be accurately measured.…”

Section: Introductionmentioning

confidence: 99%

Towards the experimental validation of a small Time-Projection-Chamber for the quasi-absolute measurement of the fission cross section

et al. 2021

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To accurately measure neutron-induced fission cross sections, to characterize neutron-beam lines or to make dosimetric investigations, it is necessary to have high accuracy measurements of neutron fluence. It is possible to perform independent and precise neutron flux measurements with respect to the 1H(n,n)p elastic scattering cross section. The use of a silicon detector is recommended from 1 to 70 MeV neutron energy. However, it has been observed that a high electrons background forbids its use below 1 MeV. Hence, a new gaseous proton-recoil telescope is developed and characterized to overcome this limit. It should provide quasi-absolute neutron flux measurements with an accuracy around 3% and is not sensible to gamma and electrons background. It consists in two ionization chambers read by a segmented micromegas technology detection plane. The gas pressure inside is adjustable to the proton range in the detector and therefore to the neutron energy. This detector is described in details below and the newest results of its characterization are presented. A special attention is paid to detection efficiency measurements.

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