A novel energy resolved neutron imaging detector based on a time stamping optical camera for the CSNS

Yang, Jiajia; Zhou, Jianrong; Jiang, X. S.; Tan, Jianhua; Zhang, Lianjun; Zhou, J. N.; Zhou, Xiaojuan; Yang, Wenqin; Xia, Yunxia; Chen, Jie; Sun, XinLi; Zhang, Quanhu; Li, Jiang; Sun, Zhi‐Wei; Chen, Yuanbo

doi:10.1016/j.nima.2021.165222

Cited by 14 publications

(33 citation statements)

References 24 publications

(29 reference statements)

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“…However, it still faced limitations in acquisition dead time and data processing time due to the slow read-out. In our previous work, a GOS scintillator was used to convert neutrons into visible light and focused on a time stamping optical camera (TPX3Cam, manufactured by ASI) by combining a mirror and optical lens [15]. The camera is developed based on the Timepix3 chip, which reads out photons directly.…”

Section: Introductionmentioning

confidence: 99%

An energy resolved neutron imaging detector based on boron doped nMCP coupled with a time stamping optical camera

Tan,

Song,

Zhou

et al. 2024

J. Inst.

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Energy resolved neutron imaging has developed rapidly due to its advantage on testing the inner structure of crystal samples. Neutron detector is one of the key components to determine the imaging results quality. The neutron sensitive microchannel plate (nMCP) has been widely used in energy resolved neutron imaging experiments because of the high spatial and timing resolution. However, the ability to adjust field-of-view (FOV) and spatial resolution has not been realized in the nMCP detector, which is an attractive capability in energy resolved neutron imaging experiments. In this paper, an energy resolved neutron imaging detector was developed by coupling nMCP with a time stamping camera. The neutrons were absorbed by nMCP and converted into light through a phosphor screen. Then the light was focused on the camera by optical lens. A data algorithm was designed to improve the data quality. By changing the magnification of the optical lens, large FOV (46mm diameter) and high spatial resolution (26 μm) were realized in the experiments at CSNS beamline 20. The energy resolved ability was demonstrated by a Bragg-edge transmission imaging experiment for aluminum and stainless-steel samples. The performance of this detector makes it a promising candidate used in energy resolved neutron imaging.

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Section: Introductionmentioning

confidence: 99%

An energy resolved neutron imaging detector based on boron doped nMCP coupled with a time stamping optical camera

Tan,

Song,

Zhou

et al. 2024

J. Inst.

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“…In similar efforts at the China Spallation Neutron Source (CSNS), the ToA capability of the TPX3Cam was utilized to perform energy resolved neutron imaging at small FoVs of 5.4 × 5.4 mm 2 15 . The approach for neutron detection in that work is similar to that of the technique that was applied to the MCP detector 10 for energy-resolved neutron imaging 11 as discussed previously, in that a single CoM algorithm to events observed on the detector is described.…”

Section: Introductionmentioning

confidence: 99%

New perspectives for neutron imaging through advanced event-mode data acquisition

Losko

Han

Schillinger

et al. 2021

Sci Rep

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Imaging using scintillators is a widespread and cost-effective approach in radiography. While different types of scintillator and sensor configurations exist, it can be stated that the detection efficiency and resolution of a scintillator-based system strongly depend on the scintillator material and its thickness. Recently developed event-driven detectors are capable of registering spots of light emitted by the scintillator after a particle interaction, allowing to reconstruct the Center-of-Mass of the interaction within the scintillator. This results in a more precise location of the event and therefore provides a pathway to overcome the scintillator thickness limitation and increase the effective spatial resolution of the system. Utilizing this principle, we present a detector capable of Time-of-Flight imaging with an adjustable field-of-view, ad-hoc binning and re-binning of data based on the requirements of the experiment including the possibility of particle discrimination via the analysis of the event shape in space and time. It is considered that this novel concept might replace regular cameras in neutron imaging detectors as it provides superior detection capabilities with the most recent results providing an increase by a factor 3 in image resolution and an increase by up to a factor of 7.5 in signal-to-noise for thermal neutron imaging.

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“…Here we report on realizing energy-resolving PNI capabilities and their feasibility at CSNS as one of the major pulsed neutron sources. Energy resolving neutron imaging detector [18] Polarized Neutron Imaging Setup. An energy dispersive PNI setup was realized on the Neutron Technology Development Beamline (BL-20) at the CSNS.…”

mentioning

confidence: 99%

“…For the measurements a direct current of 5.0 A was applied to the solenoid. An energy resolving neutron imaging detector [18] was placed behind the analyzer with a solenoid-to-detector distance of 114 cm to record two-dimensional images with corresponding detection time stamps. A circular slit of 2.0 cm diameter in front of the detector for removing diffusely scattered neutrons, completed the collimation.…”

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confidence: 99%

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Development of Time-of-Flight Polarized Neutron Imaging at the China Spallation Neutron Source

Saeed¹,

Zhou²,

Yang³

et al. 2022

Chinese Phys. Lett.

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A time-of-flight polarized neutron imaging setup was realized by integrating an in situ pumped polarized 3He spin filter and energy dispersive neutron camera on the neutron technique development beamline (BL-20) of the China Spallation Neutron Source (CSNS). Test experiments were performed with a solenoid with aluminum wire as a sample. These demonstrated that polarized radiography with a field of view in diameter 2.0 cm at different wavelengths can be obtained. The wavelength-dependent polarization was used to distinguish the neutron polarization behavior for different positions inside and outside the solenoid. The results of this work show the possibility of applying the technique at CSNS and marks a milestone for future polarized neutron imaging developments.

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A novel energy resolved neutron imaging detector based on a time stamping optical camera for the CSNS

Cited by 14 publications

References 24 publications

An energy resolved neutron imaging detector based on boron doped nMCP coupled with a time stamping optical camera

An energy resolved neutron imaging detector based on boron doped nMCP coupled with a time stamping optical camera

New perspectives for neutron imaging through advanced event-mode data acquisition

Development of Time-of-Flight Polarized Neutron Imaging at the China Spallation Neutron Source

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