Gunma University

Japan Atomic Energy Agency

Japan Atomic Energy

Naoki Kawachi

Shin Watanabe

Tadayuki Takahashi

Kazuo Arakawa

Hirofumi Shimada

Takashi Nakano

Mitsutaka Yamaguchi

Masahiro Kato

Yoshikatsu Kuroda

Takahiro Satoh

Tomihiro Kamiya

Motohide Kokubun

Kota Torikai

Shinichiro Takeda

Hirokazu Odaka

Kei Genba

A particle radiation monitoring apparatus according to one aspect of the present invention includes a detecting unit to detect radioactive ray information of braking radiation from electrons undergoing action of particle beams incident on an irradiation body in accordance with a positional relation with the irradiation body and a calculating unit to calculate information on behaviors of the particle beams in the irradiation body from the radioactive ray information of the braking radiation corresponding to the positional relation that is detected by the detecting unit.

Particle radiation monitoring apparatus, recording medium to retain particle radiation monitoring program, and particle radiation monitoring method

Plural camera heads are each placed in a position capable of detection of radiation emitted from a radiation source. Compton cones obtained from the detection data output from each of the plural camera heads are projected onto three-dimensional space and an image based on the radiation source is reconstructed. In addition, projected images from projecting Compton cones obtained from the detection data output from each camera head onto two-dimensional planes are also employed for determining a three-dimensional space excluding regions where the radiation source is not present. Reconstruction of images based on the radiation source is then performed within the determined three-dimensional space.

Compton camera

Growing community of inventors

Gunma, Japan

Naoki Kawachi