Development of a Neutron Imager using CMOS Pixelated Sensor

Yoshio Kamiya; Hidetoshi Ohshita; Ryutaro Nishimura; Toshiya Muto; Shingo Mitsui; Tomohiro Seya; Izumi Umegaki; Yasuo Arai

Development of a Neutron Imager using CMOS Pixelated Sensor

Instrumentation and Detectors 2025-05-12 v2

Authors: Yoshio Kamiya , Hidetoshi Ohshita , Ryutaro Nishimura , Toshiya Muto , Shingo Mitsui , Tomohiro Seya , Izumi Umegaki , Yasuo Arai

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Abstract

We acquired an image of the Siemens Star Chart using the ${}^{10}$ B-INTPIX4 CMOS pixelated imager at J-PARC MLF BL21 (NOVA). The image blurriness, characterized by a root mean square (rms) value of 17 $\mu$ m in the line spread function, corresponds to an rms beam divergence of 2.7 mrad. for the neutron beam. This is equivalent to the L/D ratio of 370. The contrast of the image was analyzed as a function of structural scale of the chart, and based on this contrast, the modulation transfer function (MTF) of the imaging system was evaluated. The results indicate that the structure corresponding to the 50% cutoff is 12 line-space pairs per mm.

Keywords

neutron detection x-ray imaging and diffraction solar instrument calibration

Cite

@article{arxiv.2502.20686,
  title  = {Development of a Neutron Imager using CMOS Pixelated Sensor},
  author = {Yoshio Kamiya and Hidetoshi Ohshita and Ryutaro Nishimura and Toshiya Muto and Shingo Mitsui and Tomohiro Seya and Izumi Umegaki and Yasuo Arai},
  journal= {arXiv preprint arXiv:2502.20686},
  year   = {2025}
}

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8 pages, 5 figures

Development of a Neutron Imager using CMOS Pixelated Sensor

Abstract

Keywords

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