1. Test results of boron carbide ceramics for ITER port protection
- Author
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A. A. Shoshin, S. V. Polosatkin, D. A. Kasatov, I. M. Shchudlo, Evgenii Zaitsev, A. V. Burdakov, Yuliy Sulyaev, M. V. Ivantsivskiy, Sergey Taskaev, Alexey Semenov, Marina Bikchurina, and Polina Polozova
- Subjects
Materials science ,Mechanical Engineering ,Nuclear engineering ,Boron carbide ,01 natural sciences ,Neutron temperature ,010305 fluids & plasmas ,Outgassing ,chemistry.chemical_compound ,Nuclear Energy and Engineering ,chemistry ,Impurity ,visual_art ,0103 physical sciences ,visual_art.visual_art_medium ,General Materials Science ,Neutron ,Ceramic ,010306 general physics ,Civil and Structural Engineering - Abstract
The results of long-term outgassing test of large quantities of ceramics, which is planned to be used in ITER diagnostic ports, are presented. The outgassing rate of boron carbide ceramics produced by Virial Ltd meets the requirements of the ITER Vacuum Handbook. Massive use of ceramics in ITER may create a significant gas load on the vacuum system that requires accurate analysis. Calculations of gas emission of Equatorial Port #11 were performed and it was demonstrated that a significant amount of ceramics can be used for neutron protection. Experiments on activation of ceramics and stainless steels by fast neutrons were carried out, which showed a rapid reduction of residual radioactivity and absence of hazardous impurities.
- Published
- 2021
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