Development and characterization of a high sensitivity segmented Fast Neutron Spectrometer (FaNS-2)

Langford, T.; Beise, E. J.; Breuer, H.; Heimbach, C.R.; Ji, Geoffrey; Nico, J. S.

doi:10.1088/1748-0221/11/01/p01006

Cited by 8 publications

(7 citation statements)

References 76 publications

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“…17 , and a novel neutron spectrometer with comparable properties was recently developed by Langford et al . 18 . The application of the neutron signal for primary beam range verification has been proposed 15 , but remains an as-yet unexplored range verification modality.…”

Section: Introductionmentioning

confidence: 99%

A Monte Carlo feasibility study for neutron based real-time range verification in proton therapy

Ytre-Hauge

Skjerdal

Mattingly

et al. 2019

Sci Rep

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Uncertainties in the proton range in tissue during proton therapy limit the precision in treatment delivery. These uncertainties result in expanded treatment margins, thereby increasing radiation dose to healthy tissue. Real-time range verification techniques aim to reduce these uncertainties in order to take full advantage of the finite range of the primary protons. In this paper, we propose a novel concept for real-time range verification based on detection of secondary neutrons produced in nuclear interactions during proton therapy. The proposed detector concept is simple; consisting of a hydrogen-rich converter material followed by two charged particle tracking detectors, mimicking a proton recoil telescopic arrangement. Neutrons incident on the converter material are converted into protons through elastic and inelastic (n,p) interactions. The protons are subsequently detected in the tracking detectors. The information on the direction and position of these protons is then utilized in a new reconstruction algorithm to estimate the depth distribution of neutron production by the proton beam, which in turn is correlated with the primary proton range. In this paper, we present the results of a Monte Carlo feasibility study and show that the proposed concept could be used for real-time range verification with millimetric precision in proton therapy.

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Section: Introductionmentioning

confidence: 99%

A Monte Carlo feasibility study for neutron based real-time range verification in proton therapy

Ytre-Hauge

Skjerdal

Mattingly

et al. 2019

Sci Rep

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“…The drastic efficiency cut-off reported [2] in the 10-100 MeV is related to the detector structure (matrix of scintillation fibres). The use of the recoil proton technique for neutron detection in particle therapy has been also reported in [5,6]. RIPTIDE [4] was conceived to bypass some of the limitations of the RPTI techniques present in the literature [1-3, 5, 6].…”

Section: Jinst 17 C09026mentioning

confidence: 99%

“RIPTIDE” — an innovative recoil-proton track imaging detector

Massimi¹,

Musumarra²,

Leone³

et al. 2022

J. Inst.

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Neutron detectors perform key tasks in many research fields as nuclear, particle and astroparticle physics as well as neutron dosimetry, radiotherapy, and radiation protection. Neutron detectors exhibiting tracking capability are still missing, although several approaches to neutron momentum reconstruction have been proposed. In this context, we aim at developing a novel RecoIl-Proton Track Imaging DEtection system “RIPTIDE”, in which the light output of a fast scintillation signal is used to perform a complete reconstruction in space and time of the neutron-proton elastic scattering. The 3D track reconstruction is going to be implemented by state-of-the-art high-sensitivity imaging detector (CMOS, MCP-Timepix). Preliminary Geant4 simulations of the proposed set-up show up a good detection efficiency in a compact active volume. The envisaged electronic readout can be easily adapted according to a specific application (event-by-event mode or integration mode). The system can be rescaled by increasing the detection volume or by combining several detection modules. Further developments of the basic detection technique can be adapted for fast charged particle detection tracking as well.

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“…Finally, the use of the recoil proton technique for neutron detection in particle therapy has been reported also in refs. [12,13]. In particular, the proposed detectors are a recoil proton telescope combined to a hydrogenated converter with a stack of CMOS tracking sensors and a FaNS-2 capture-gated detector (an advanced spectrometer for neutron flux and energy reconstruction, conceived as a segmented fast neutron detector based on 3 He proportional counters and plastic scintillators), respectively.…”

Section: Rpti Neutron Detectorsmentioning

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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Development and characterization of a high sensitivity segmented Fast Neutron Spectrometer (FaNS-2)

Cited by 8 publications

References 76 publications

A Monte Carlo feasibility study for neutron based real-time range verification in proton therapy

A Monte Carlo feasibility study for neutron based real-time range verification in proton therapy

“RIPTIDE” — an innovative recoil-proton track imaging detector

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

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