Recruitment for Postdoctoral Fellow
(Fixed-term researcher)

1. Physics	Chemistry	Mathematics	Geo and Environemtal Sciences	Biology	Radiation
   Mechanics	Material	Electricity and Electronics	Architectural and Civil Engineering	Applied Physics	Applied Chemistry
   Chemical Engineering	Measurements and Instruments	Computer and Information	Robotics	Other	All

2. No	Theme
   	Department	Section	Location	Contact Person	Radiation Worker/ Non-Radiation Worker	Field (for reference）
   	Summary
   J2	R&D for Laser Processing Simulation Code with Laser Processing Experiment and Deployment of Sensing Technology
   	Tsuruga Center for International and Regional Collaboration	Applied Laser Technology Institute	Tsuruga Head Office	Toshiharu Muramatsu E-mail: muramatsu.toshiharu@jaea.go.jp	Non-Radiation Worker	Mechanics Material Applied Physics Computer and Information Measurements and Instruments Material
   	We are developing laser processing technologies for industrial applications. First, the development of simulation code named "SPLICE" should be advanced to improve the numerical turbulent model and to optimize the parameters. High power laser processing experiment is needed for quantitative analysis. New laser systems and several sensing technologies are required for structural health monitoring with multiple sensors. Heat resistant optical fiber sensor has been installed on the piping system of demo-plant. Data remote processing is needed for monitoring the integrity. ※Energy base-ization of research and development Fukui-ken advances, they're the research and development concerned with advance of laser improvement process simulation code SPLICE developed aiming at contribution to a plan, and I make them promote more prefecture use of SPLICE cable through an outcome of this case. All together, I aim at preservation optics in atomic energy and innovation of status monitoring.
   J3	Study on feasibility and effectiveness evaluation for severe accident countermeasures
   	Nuclear Safety Research Center	Severe Accident Analysis Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Tomoyuki Sugiyama Tel:+81-29-282-5253 E-mail: sugiyama.tomoyuki@jaea.go.jp	Non-Radiation Worker	Physics Chemistry Mechanics Material Applied Physics Computer and Information Other
   	This research aims at development of analysis models and tools to improve evaluation techniques of severe accident countermeasures. One of the following tasks or that related to the tasks is carried out. - Source term analysis of Fukushima daiichi NPS accident using the SA analysis code THALES2/KICHE. - Analysis of fluid dynamic behaviors of core melt in containment vessel using the mechanistic FCI code JASMINE. - Analysis of thermal-hydraulic and deflagration/detonation behaviors of hydrogen in containment vessel or reactor building using the open CFD code OpenFOAM.
   J4	Study on the methodology of the structural integrity assessment for nuclear reactor components
   	Nuclear Safety Research Center	Structural Integrity Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Yinsheng Li Tel:+81-29-282-6457 E-mail: li.yinsheng@jaea.go.jp	Non-Radiation Worker	Mechanics Material Applied Physics Physics Architectural and Civil Engineering Computer and Information
   	Because of the ageing degradation due to long term operation for Japanese nuclear power plants, developing the methodologies of structural integrity assessments for the reactor components concerning neutron irradiation, stress corrosion cracking and so on is of great importance. In this theme, researches on the deterministic approaches such as weld residual stress evaluation, crack propagation evaluation under large scale yielding condition, fracture evaluation concerning the crack or thinning for nuclear components are conducted on the basis of numerical simulation, material testing, and fracture testing and so on. In addition, probabilistic fracture mechanics analysis codes concerning ageing degradation of nuclear components are developed on the basis of the knowledge obtained from simulation and testing.
   J13	Research on Criticality Safety/Management of Damaged- or Molten-Fuel formed by Severe Accidents
   	Nuclear Safety Research Center	Criticality Safety Research Group	Tokai Research and Development Center Nuclear Science Research Institute	Kotaro Tonoike Tel:+81-29-284-3762 E-mail: tonoike.kotaro@jaea.go.jp	Radiation Worker	Physics Computer and Information Applied Physics Other
   	It is important to establish both the cooling and the criticality control of fuel debris after the severe accident, such as the Fukushima Daiichi accident, where large amount of fuel is damaged and melts. It is difficult, however, to control the situation of fuel debris and the coolant flow path, which leads the difficulty in securing the subcritical condition. Thus, the evaluation of re-criticality risk is necessary. In this research, critical mass, kinetic parameters, etc. of fuel debris will be obtained by computation; and critical experiments to validate the computation will be studied as well.
   J14	Nuclear reaction and structure study for exotic nuclei
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Research Institute	Katsuhisa Nishio Tel:+81-29-282-5454 E-mail: nishio.katsuhisa@jaea.go.jp	Radiation Worker	Physics Applied Physics Mathematics Measurements and Instruments Other
   	Experimental nuclear physics programs dedicated to exotic nuclei such as neutron-rich, proton-rich and super-heavy nuclei will be promoted. Challenge to find a new phenomenon in nuclear structure, nuclear reaction and fission processes will be highly encouraged. Experiments will be carrieod out using JAEA facility and also other facilities inside and outside Japan to produce exotic nuclei and unique states in nuclei. (http://asrc.jaea.go.jp/soshiki/gr/HENS-gr/index_e.html)
   J19	Electronic property of heavy element systems
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Materials Physics for Heavy Element Systems	Tokai Research and Development Center Nuclear Science Research Institute	Shinsaku Kambe Tel:+81-29-284-3525 E-mail: kambe.shinsaku@jaea.go.jp	Radiation Worker	Physics Applied Physics Material
   	Condensed matter physics in heavy element systems. Particularly magnetism and superconductivity in f-electron compounds.
   J21	Materials science research by using a muon beam
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Nanoscale Structure and Function of Advanced Materials	Tokai Research and Development Center Nuclear Science Research Institute	Wataru Higemoto Tel:+81-29-284-3873 E-mail: higemoto.wataru@jaea.go.jp	Radiation Worker	Physics Chemistry Material Applied Physics Applied Chemistry Measurements and Instruments
   	The applicant will be involved in materials science research by using accelerator-produced muons, which are implanted into a material and used as a sensitive local probe. In our group, the applicant will be able to use advanced muon beams, such as an ultra-slow muon beam in J-PARC, to investigate various functional materials. Instrumentation is also encouraged for the purpose. (http://asrc.jaea.go.jp/soshiki/gr/Nanoscale-gr/index.html)
   J27	Research and development of non-destructive analysis for nuclear materials.
   	Nuclear Science and Engineering Center	Research Group for Nuclear Sensing, Nuclear Data and Reactor Engineering Division	Tokai Research and Development Center Nuclear Science Research Institute	Yosuke Toh Tel:+81-29-282-6211 E-mail: toh.yosuke@jaea.go.jp	Radiation Worker	Measurements and Instruments Physics Radiation Applied Physics
   	Non-destructive analysis of nuclear materials is required in many fields, namely nuclear non-proliferation and nuclear security, nuclear decommissioning, nuclear transmutation and nuclear industry. In this research, non-destructive techniques of nuclear materials and long-lived radioisotopes, which are difficult to quantify by conventional methods, are developed by combining several method, such as neutron and gamma-ray detection and imaging techniques.
   J30	Study of Performance Improvement for the J-PARC Accelerators
   	Sector of Nuclear Science Research, J-PARC Center	Accelerator Division	J-PARC	Michikazu Kinsho Tel:81-29-284-3172 E-mail: kinsho.michikazu@jaea.go.jp	Radiation Worker	Physics Applied Physics Radiation Electricity and Electronics Measurements and Instruments
   	The goal of the J-PARC proton accelerators is to achieve stable beam operation at 1 MW. Beam loss reduction is crucial to increase beam power and to achieve stable operation. And also, long-lasting components are important for reliable operation. The subject of this theme is to study beam loss reduction for the J-PARC linac and/or 3 GeV Synchrotron (RCS). He/she will perform a study of beam diagnostics, beam loss handling and component development for stabler operation.
   F6	R&Ds on Radiation Imaging Technologies under High-dose Environments
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Radiation Imaging and Instrument Group Remote System and Sensing Technology Division	Tokai Research and Development Center (Nuclear Science Research Institute) or Tomioka International Collaborative Research Building (now under constructing)	Jun Saegusa Tel:+81-(0)29-282-6144 E-mail: saegusa.jun@jaea.go.jp	Radiation Worker	Physics Radiation Computer and Information Electricity and Electronics Applied Physics Measurements and Instruments
   	For the decommissioning of TEPCO Fukushima Daiichi Nuclear Power Plants, gamma-ray detectors that can estimate the position, shape and nuclide distributions of residual debris are to be developed. In particular, a prototype detection system consisting of two-dimensional-gamma-imaging units and compact scintillator crystals is developed for the application to fuel debris measurements, and response characteristics of each element to gamma-rays are evaluated. In addition, a compact/lightweight gamma-camera is to be manufactured for the evaluation of its detection capability to radioactive materials and of durability against radiations. An unmanned remote radiation measurement system for the imaging of the radioactivity distribution in the Fukushima reactor building are also to be developed.
   F7	R&Ds on Image Processing Technologies for Radiation Measurement Data on Reactor Decommissioning
   	Collaborative Laboratories for Advanced Decommissioning Science (CLADS), Sector of Fukushima Research and Development	Radiation Imaging and Instrument Group Remote System and Sensing Technology Division	Tokai Research and Development Center (Nuclear Science Research Institute) or Tomioka International Collaborative Research Building (now under constructing)	Jun Saegusa Tel:+81-(0)29-282-6144 E-mail: saegusa.jun@jaea.go.jp	Non-Radiation Worker	Computer and Information Radiation Physics Mathematics Applied Physics Measurements and Instruments
   	Towards the planned removal of fuel debris from the TEPCO Fukushima Daiichi Nuclear Power Plants in 2021, reduction of radiation doses to workers and countermeasures against the spreading of radioactive contaminations are essential. For the purpose, three-dimensional visualization (mapping) of dose rates and radionuclide distributions are required as well as the real time monitoring of dose rates in the reactor building. So far, developments on radiation measurement techniques in the Fukushima Daiichi NPPs are in progress, and results obtained from these developments are to be visualized by the proposed R&Ds. Especially, developments of the algorithm for the three-dimensional image reconstruction is to be performed.
   F12	High-energy gamma-rays accompanied by fission
   	Sector of Nuclear Science Research Advanced Science Research Center	Research Group for Heavy Element Nuclear Science	Tokai Research and Development Center Nuclear Science Rsearch Institute	Dr. Katsuhisa Nishio Tel:+81-29-282-5454 E-mail: nishio.katsuhisa@jaea.go.jp	Radiation Worker	Physics Radiation Measurements and Instruments Applied Physics Computer and Information
   	Measurement of high-energy gamma-rays accompanied by fission will be carried out, and the mechanism of this radiation will be investigated. The main goal is to use this radiactivity to monitor the criticality of nuclear fuel debris of damaged Fukushima atomic power plants, which is necessary in the process of decommissioning. An experiment will be carried out using neutron beam supplied by a research reactor. Fission study is also the scope of this program using heavy-ion beams and and photons.