@misc{oai:repo.qst.go.jp:00079632,
 author = {Ishikawa, Masao and 石川正男 and Suda, Marin and 須田 and Yamauchi, Michinori and Ishikawa, Masao and Suda, Marin and Yamauchi, Michinori},
 month = {Sep},
 note = {A neutron flux monitor is one of the most important systems in ITER because it provides total neutron source strength and fusion power of ITER. The in-vessel neutron flux monitor equipped with Microfission Chambers (MFCs) is designed by Japan Domestic Agency. In-vessel components of the MFC are exposed to the extreme ITER environment, such as high radiation and high electromagnetic (EM) forces. Furthermore, various accidents are also assumed in ITER Therefore, the in-vessel components need to withstand such ITER environment. 
   In this study, various analyses and tests have been carried out for the in-vessel components in order to show that they can be applied under ITER harsh conditions. Soundness verification tests such as high-temperature and noise immunity test of in-vessel components show that the MFCs can be operated under high temperature up to 550C and have the noise resistance in ITER condition. Neutronic analysis also shows the in-vessel components of the MFC can withstand for high radiation environment in ITER for 20 years. An electrical feedthrough is one of the most important components of the MFC because it forms boundary for not only vacuum but also all radioactive and toxic substance of ITER tokamak. Therefore, even if accidents happen such as earthquake and/or fire, the feedthrough needs to keep its confinement function. Environmental tests were conducted for the feedthrough. The results indicate that the feedthrough can maintain its confinement function even  if accidents assumed in ITER occur., The 14th International Symposium on Fusion Nuclear Technology, Wigner Research Centre for Physics},
 title = {Detail Design of In-Vessel Components of ITER Neutron Flux Monitor Equipped with Microfission Chambers},
 year = {2019}
}