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Uesaka, Mitsuru*; Kobayashi, Hitoshi*; Kureta, Masatoshi; Nakatsuka, Shigehiro*; Nishimura, Kazuya*; Igashira, Masayuki*; Hori, Junichi*; Kiyanagi, Yoshiaki*; Tagi, Kazuhiro*; Seki, Toshichika*; et al.
Reviews of Accelerator Science and Technology, 8, p.181 - 207, 2015/00
We choose nuclear data and nuclear material inspection for energy application and nondestructive testing of explosive and hidden nuclear materials for security application. 90 keV electrostatic accelerators of deuterium are commercially available for nondestructive testing. For nuclear data measurement, electrostatic ion accelerators and L-band and S-band electron linear accelerators (linac) are used for the neutron source. Compact or mobile X-band electron linac neutron sources are under development. Compact proton linac neutron source is used for nondestructive testing especially water in solids. Several efforts for more neutron intensity using proton and deuteron accelerators are also introduced.
Seya, Michio
no journal, ,
This oral presentation introduces present status of development activities in Europe, United States of America and in Japan of non-destructive detection technologies, which are required for member states in IAEA Nuclear Security Series No.15 (Nuclear Security Recommendations on Nuclear and Other Radioactive Material out of Regulatory Control). Also, the NDA technologies presently applied to IAEA safeguards as well as development program of spent fuel Pu NDA technologies of NGSI (Next Generation Safeguards Initiative) of DOE are explained. In addition, among development activities of JAEA relating nuclear security and nuclear safeguards, development of laser Compton scattered 
-ray source and NRF (Nuclear Resonance Fluorescence) -NDA technologies using LCS -rays and also development of NRD (Neutron Resonance Densitometry) technologies are presented.
Kureta, Masatoshi
no journal, ,
JAEA nuclear science and engineering center had conducted the program named "R&D of a baggage inspection system for detection of concealed special materials" which had been promoted by Cabinet Office under the collaboration with University of Tokyo and IHI Corporation since 2007 for three years. And the inspection system was demonstrated using the prototype. In this presentation, the outline of the neutron interrogation baggage inspection system will be reported, and the importance of the constructing the collaboration network of industry, academia and government will be discussed.
Kureta, Masatoshi; Seya, Michio
no journal, ,
The special nuclear materials (SNMs) and radioactive materials in a suspicious object could be detected by the passive and/or active neutron and -ray detection systems. It would be necessary for safe dismantling, transportation and nuclear forensics that the detailed inner structure checking system of detected suspicious objects should be operated after the detection. The detection system of the SNMs for a baggage inspection had already been developed at the JAEA, and it was confirmed that the concealed SNMs in a baggage could be detected with very high sensitivity by the prototype system. The detection time of SNMs was less than five seconds in many cases. And the JAEA has developing the SNM measurement and an explosive detection systems using the JAEA-Type deferential die-away analysis and prompt -ray analysis techniques at present under the project "Development of active neutron non-destructive assay technique".
Koizumi, Mitsuo
no journal, ,
no abstracts in English
Komeda, Masao; Toh, Yosuke
no journal, ,
no abstracts in English
Komeda, Masao; Toh, Yosuke; Ozu, Akira
no journal, ,
no abstracts in English
Komeda, Masao; Toh, Yosuke; Tanabe, Kosuke*
no journal, ,
no abstracts in English
Komeda, Masao; Toh, Yosuke; Ozu, Akira; Tsuchiya, Harufumi
no journal, ,
no abstracts in English
Shiba, Tomooki; Kaburagi, Masaaki; Takada, Akira*; Yamaguchi, Tomoki
no journal, ,
This study intends to apply the detection of prompt gamma rays associated with nuclear fission, which is a unique feature of nuclear materials, for nuclear security.
Shiba, Tomooki; Sugizaki, Saki*; Yamaguchi, Tomoki
no journal, ,
The detection of prompt gamma rays (PFG) associated with nuclear fission, which is unique to nuclear materials, can be applied to the field of nuclear security. In this research, the applicability of the Am-Li neutron source is discussed.
米田 政夫; 藤 暢輔
not registered
JP, 2018-181563 
Patent licensing information Patent publication (In Japanese)
【課題】小型の装置を用いて核物質を高精度で検知する。 【解決手段】中性子線源10と試料Sの位置関係は、円板20の回転の位相(角度)で定まる。円板20の回転軸20Aは、モーターで駆動され、この回転はコンピューター40で制御される。コンピューター40には、中性子検出器30の出力も入力する。コンピューター40は、円板20の回転に伴うカウント数の変遷を認識することができる。円板20を回転させることにより、中性子線源10と試料Sとの間の距離が変化し、かつこの動きがこの距離が最小となる状態の前後で対称となるように中性子線源10を移動させ、この際に試料S側から発せられる中性子の中性子検出器30によるカウント数の変遷を検出する。この結果における、距離が最小となる状態の前のカウント数と、距離が最小となる状態の後のカウント数との違いに基づいて、試料Sにおける核物質の存在の有無を認識する。
米田 政夫; 藤 暢輔
not registered
JP, 2020-006793 Patent licensing information Patent publication (In Japanese)
【課題】一次中性子成分と、これによって試料から発生する二次中性子成分が共に検出される場合に、適切に二次中性子成分を認識して試料の分析を行う。 【解決手段】中性子検出器20は、中性子1個を吸収する度にパルス出力をする。解析装置30は、中性子検出器20における中性子の検出タイミングの時間差を算出する時間差算出部31と、この時間差のデータから上記の認識を行う解析部32を具備する。時間差算出部31は、中性子検出器20が中性子を検出した度に、この検出タイミングよりも前に中性子を検出した検出タイミングとの時間差ΔTを算出し、解析部32はこの値を認識し、認識されたΔTの全てを記憶し、測定の終了後にそのヒストグラムを生成する。ΔTのヒストグラムから試料Sにおける核物質の検知、その含有量を推定することができる。
