Development of Neutron Color Image Intensifier for Pulsed Neutron Source

Nittoh, Koichi; Konagai, Chikara; Yahagi, Mitsuru; Kiyanagi, Yoshiaki; Kamiyama, Takashi

doi:10.1016/j.phpro.2015.07.025

Cited by 10 publications

(6 citation statements)

References 6 publications

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“…The causes are considered to be the intense γ-flash and the long decay time of the prototype detector system. For measurements of transmission spectra below λ = 0.15 nm, therefore, we would apply a blanking (gating) technique to the electron lens of the NII and use another NII with a faster decay time for the output screen [13]. As shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

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A Prototype Detector Using the Neutron Image Intensifier and Multi-Anode Type Photomultiplier Tube for Pulsed Neutron Imaging

Ishikawa¹,

Sato²,

Hara³

et al. 2016

Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016)

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We developed a neutron two-dimensional (2-D) detector for pulsed neutron imaging as a prototype detector, which was composed of a neutron image intensifier and a multi-anode type photomultiplier tube. A neutron transmission spectrum of α-Fe plate was measured by the prototype detector, and compared with the one measured by a typical neutron 2-D detector. The spectrum was in reasonable agreement with the one measured by the typical detector in the neutron wavelength region above 0.15 nm. In addition, a neutron transmission image of a cadmium indicator was obtained by the prototype detector. The usefulness of the prototype detector for pulsed neutron imaging was demonstrated.

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Section: Discussionmentioning

confidence: 99%

“…The obtained τ is 385 μs. The long τ arises from mostly the fluorescence decay time of the output screen of the NII [13].…”

Section: Time Response Of the Prototype Detector Systemmentioning

confidence: 99%

A Prototype Detector Using the Neutron Image Intensifier and Multi-Anode Type Photomultiplier Tube for Pulsed Neutron Imaging

Ishikawa¹,

Sato²,

Hara³

et al. 2016

Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016)

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“…For example, if neutron transmission images can be continuously taken with a moving average of 1 second at 30 fps under the flux of 3x10 6 n/cm 2 /sec as typical small reactors, it would take as much as 1000 seconds (17 minutes) under flux 3x10 3 n/cm 2 /sec to get the similar brightness single frame image, and 10000 seconds (2.8 hours) under flux 3x10 2 n/cm 2 /sec as neutron generators, respectively. Cameras installed in the previous NII systems were video cameras, high-definition digital single-lens reflex cameras or high-speed cameras [3,4]. In case of exposing with 17 minutes or 2.8 hours in the single lens reflex camera, bulb shooting will be performed during that time.…”

Section: Selection Of Digital Cameramentioning

confidence: 99%

“…The emitted electrons are accelerated by the electric field toward the phosphor luminescent window while maintaining the neutron incident image. For the neutron detection by the image intensifier some developments were necessary in the input and output windows with short decay time to apply to pulsed neutron sources [3,4]. As the imaging system the NII is combined with an optical system which consists of a lens and a camera.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Neutron Color Image Intensifier Detector using an Industrial Digital Camera

Kamiyama

Nittoh

Takada³

2020

Neutron Radiography - WCNR-11

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Among various kinds of detectors being developed for neutron transmission imaging, Neutron Image Intensifier (NII) is still a promising option in terms of field of view and sensitivity. Since NII has a position resolution higher than 0.1 mm, it can be expected to obtain a high-sensitivity and high-gradation fine image with a camera to be combined [1]. In this research, we selected CMOS cameras for industrial applications with linearity over a wide sensitivity range, and examined the performance of the camera, especially the cooling effect of the sensor which is important in long-time measurement. Based on this result, we developed a portable imaging system that compactly integrates a cooled camera with NII, and constructed a system that can be used quickly in various neutron facilities.

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“…In a measurement for the complementary imaging, a detector based on a vacuum-tube type neutron color image intensifier (NCII; TOSHIBA, Ultimage TM -nγ -04) [5] has been applied to the both neutron and X-ray beams. The schematic view of the detector is shown in Fig.…”

Section: Detector For Both Neutron and X-raymentioning

confidence: 99%

Measurement and simulation for a complementary imaging with the neutron and X-ray beams

et al. 2017

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Abstract. By using a composite source system, we measured radiographs of the thermal neutron and keV X-ray in the 45-MeV electron linear accelerator facility at Hokkaido University. The source system provides the alternative beam of neutron and X-ray by switching the production target onto the electron beam axis. In the measurement to demonstrate a complementary imaging, the detector based on a vacuum-tube type neutron color image intensifier was applied to the both beams for dual-purpose. On the other hand, for reducing background in a neutron transmission spectrum, test measurements using a gadolinium-type neutron grid were performed with a cold neutron source at Hokkaido University. In addition, the simulations of the neutron and X-ray transmissions for various substances were performed using the PHITS code. A data analysis procedure for estimating the substance of sample was investigated through the simulations.

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Development of Neutron Color Image Intensifier for Pulsed Neutron Source

Cited by 10 publications

References 6 publications

A Prototype Detector Using the Neutron Image Intensifier and Multi-Anode Type Photomultiplier Tube for Pulsed Neutron Imaging

A Prototype Detector Using the Neutron Image Intensifier and Multi-Anode Type Photomultiplier Tube for Pulsed Neutron Imaging

Improvement of Neutron Color Image Intensifier Detector using an Industrial Digital Camera

Measurement and simulation for a complementary imaging with the neutron and X-ray beams

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