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JAEA Reports

Research for spectroscopy of fuel debris using superconducting phase transition edge sensor microcalorimeter; Measurement experiment and simulated calculation (Joint research)

Takasaki, Koji; Yasumune, Takashi; Onishi, Takashi; Nakamura, Keisuke; Ishimi, Akihiro; Ito, Chikara; Osaka, Masahiko; Ono, Masashi*; Hatakeyama, Shuichi*; Takahashi, Hiroyuki*; et al.

JAEA-Research 2013-043, 33 Pages, 2014/01

JAEA-Research-2013-043.pdf:13.81MB

In the Fukushima Daiichi Nuclear Power Plant, it is assumed that the core fuels melted partially or wholly, and the normal technique of accounting for a fuel assembly is not applicable. Therefore, it is necessary to develop the transparent and rational technique of accounting in the process of collection and storage of fuel debris. In this research, an application of the superconducting phase Transition Edge Sensor microcalorimeter (TES microcalorimeter) is studied for the accounting of nuclear materials in the fuel debris. It is expected that the detailed information of nuclear materials and fission products in fuel debris is obtained by using a high-resolution characteristic of TES microcalorimeter. In this report, the principle of TES microcalorimeter, the measurement experiment using TES in JAEA, and the simulated calculation using the EGS5 code system are summarized.

Oral presentation

Neutron Beta Decay experiment(NBD) at JRR-3; Measurement of beta decay events

Yamada, Satoru; Mishima, Kenji*; Sato, Hiromi*; Hirota, Katsuya*; Shinohara, Takenao*; Morishima, Takahiro*; Ono, Masashi*; Oku, Takayuki; Suzuki, Junichi; Shimizu, Hirohiko*

no journal, , 

no abstracts in English

Oral presentation

Highly polarized neutron beam produced by a quadrupole magnet and its application to fundamental physics

Yamada, Satoru; Oku, Takayuki; Mishima, Kenji*; Sato, Hiromi*; Hirota, Katsuya*; Morishima, Takahiro*; Ono, Masashi*; Shinohara, Takenao; Suzuki, Junichi; Shimizu, Hirohiko*

no journal, , 

no abstracts in English

Oral presentation

Spectroscopic measurement of X-rays and $$gamma$$-rays using a TES microcalorimeter with a thick Sn absorber; Spectrum analysis with Monte Carlo simulation

Yasumune, Takashi; Takasaki, Koji; Onishi, Takashi; Koyama, Shinichi; Hatakeyama, Shuichi*; Ono, Masashi*; Takahashi, Hiroyuki*

no journal, , 

Superconducting transition edge sensors (TES) have been developed for identification of plutonium and minor actinides. We have developed TES with a thick Sn absorber to detect X-rays and $$gamma$$-rays. Energy dispersive spectroscopy measurements of an actinide source were conducted by the TES with a Sn absorber to demonstrate the potential for hard X-ray and $$gamma$$-ray detection. We also performed a Monte Carlo simulation using EGS5 code in order to analyze the obtained results.

Oral presentation

Spectroscopic measurements of X rays and $$gamma$$ rays emitted from $$^{237}$$Np sources with using TES microcalorimeters

Yasumune, Takashi; Takasaki, Koji; Ito, Chikara; Ono, Masashi*; Irimatsukawa, Tomoya*; Takahashi, Hiroyuki*

no journal, , 

no abstracts in English

Oral presentation

Measurement of X-rays and $$gamma$$-rays using a TES microcalorimeter with a Sn absorber; Analysis of energy spectrum with Monte Carlo simulation

Yasumune, Takashi; Takasaki, Koji; Nakamura, Keisuke; Ono, Masashi*; Irimatsukawa, Tomoya*; Takahashi, Hiroyuki*

no journal, , 

no abstracts in English

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