As a remote sensing technique of Nuclear Power Reactor Vessel, cosmic-ray muon radiography has been applying at Fukushima Dai-ichi NPP. Nuclear emulsion is one method of muon radiography that is characterized in light weight, unnecessary power, waterproof, and high detection resolution. The nuclear emulsion plates were set at B2FL of reactor building and bottom of sub-drain of outdoors of Hamaoka NPP Unit No.2. In This paper, we report results of measurement of lower part of PCV. ...
英字タイトル:
Measurement of lower part of PCV of Hamaoka NPP with nuclear emulsion

Muon radiography is one of the remote sensing technologies, and it has been used at Fukushima Daiichi NPP to understand the status of the fuel inside the reactor. Nuclear Emulsion is one of the detectors used for muon radiography. Its features are light weight, compact size, no power supply required, high position resolution, and suitable for installation in a limited space. So far, at the Hamaoka NPP, from the floor on the second underground level and the sub-drain in the building-outdoor part, observation...
英字タイトル:
Measurement of lower part of PCV of Hamaoka NPP with nuclear emulsion (Part2)

Abstract. A scientifically correct understanding of the nature of ionizing radiation and its impact on the health has become more and more important after the accident at the Fukushima nuclear ower plant due to the Great East Japan Earthquake that occurred on March 11, 2011. We have developed the diffusion cloud chamber with the function of insertion and extraction of both a radiat ion source and a shield material independently. We demonstrated the observation of the tracks of various shape generated by al...
英字タイトル:
The Study of a Usage of Diffusion Cloud Chamber for Understanding of Ionizing Radiation (2)