Optical Method Based on a Gaseous Scintillator for Neutron Energy Spectrum Measurements

Wang, Guanying; Zhang, L.; Song, Wenjing; Chen, L.; Li, Q.; Zheng, Zh.; Han, Ran; Ouyang, Xiaoping

doi:10.1007/s10812-020-01088-x

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…For instance, only a few detector concepts or feasibility studies are present in the literature, e.g. [2][3][4][5][6]. Tracking fast neutrons [7] requires a complete momentum reconstruction of the detected neutrons.…”

Section: Introductionmentioning

confidence: 99%

Riptide: a proton-recoil track imaging detector for fast neutrons

Pisanti,

Berardi,

Console Camprini

et al. 2024

J. Inst.

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Riptide is a detector concept aiming to track fast neutrons. It is based on neutron-proton elastic collisions inside a plastic scintillator, where the neutron momentum can be measured by imaging the scintillation light. More specifically, by stereoscopically imaging the recoil proton tracks, the proposed apparatus provides neutron spectrometry capability and enable the online analysis of the specific energy loss along the track. In principle, the spatial and topological event reconstruction enables particle discrimination, which is a crucial property for neutron detectors. In this contribution, we report the advances on the Riptide detector concept. In particular, we have developed a Geant4 optical simulation to demonstrate the possibility of reconstructing with sufficient precision the tracks and the vertices of neutron interactions inside a plastic scintillator. To realistically model the optics of the scintillation detector, mono-energetic protons were generated inside a 6 × 6 × 6 cm3 cubic BC-408 scintillator, and the produced optical photons were propagated and then recorded on a scoring plane corresponding to the surfaces of the cube. The photons were then transported through an optical system to a 2 × 2 cm2 photo sensitive area with 1 Megapixel. Moreover, we have developed two different analysis procedures to reconstruct 3D tracks: one based on data fitting and one on Principal Component Analysis. The main results of this study will be presented with a particular focus on the role of the optical system and the attainable spatial and energy resolution.

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Section: Introductionmentioning

confidence: 99%

Riptide: a proton-recoil track imaging detector for fast neutrons

Pisanti,

Berardi,

Console Camprini

et al. 2024

J. Inst.

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show abstract

“…Consequently, several state-of-the-art approaches have been recently proposed with the aim of tracking neutrons by using n-p single and double scattering (see for instance refs. [6][7][8][9]). Hereafter this kind of detectors are referred to as Recoil Proton Track Imaging (RPTI) systems and are presented in the next section.…”

Section: Introductionmentioning

confidence: 99%

RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons

et al. 2021

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Neutron detectors are an essential tool for the development of many research fields, as nuclear, particle and astroparticle physics as well as radiotherapy and radiation safety. Since neutrons cannot directly ionize, their detection is only possible via nuclear reactions. Consequently, neutron-based experimental techniques are related to the detection of charged particle or electromagnetic radiation originating from neutron-induced reactions. The study of fast neutrons is often based on the neutron-proton elastic scattering reaction. In this case, the ionization induced by the recoil protons in a hydrogenous material constitutes the basic information for the design and development of neutron detectors. Although experimental techniques have continuously improved and refined, so far, proton-recoil track imaging is still weak in laboratory rate environments because of the extremely small detection efficiency. To address this deficiency, we propose a novel recoil-proton track imaging system in which the light deriving from a fast scintillation signal is used to perform a complete reconstruction in space and time of the event. In particular, we report the idea of RIPTIDE (RecoIl Proton Track Imaging DEtector): an innovative system which combines a plastic scintillator coupled to imaging devices, based on CMOS technology, or micro channel plate sensors. The proposed apparatus aims at providing neutron spectrometry capability by stereoscopically imaging the recoil-protons tracks, correlating the spatial information with the time information. RIPTIDE intrinsically enable the online analysis of the ionization track, thus retrieving the neutron direction and energy, without spoiling the overall efficiency of the detection system. Finally, the spatial and topological event reconstruction enables particle discrimination — a crucial requirement for neutron detection — by deducing the specific energy loss along the track.

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Optical Method Based on a Gaseous Scintillator for Neutron Energy Spectrum Measurements

Cited by 2 publications

References 24 publications

Riptide: a proton-recoil track imaging detector for fast neutrons

Riptide: a proton-recoil track imaging detector for fast neutrons

RIPTIDE: a novel recoil-proton track imaging detector for fast neutrons

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