Divertor armour issues: lifetime, safety and influence on ITER performance
Comprehensive simulations of the ITER divertor armour vaporization and brittle destruction under ELMs of different sizes have revealed that the erosion rate of CFC armour is intolerable for an industrial reactor, but it can be considerably reduced by the armour fibre structure optimization. The IT...
Збережено в:
| Видавець: | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
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| Дата: | 2009 |
| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2009
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/88222 |
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| Цитувати: | Divertor armour issues: lifetime, safety and influence on ITER performance / S. Pestchanyi // Вопросы атомной науки и техники. — 2009. — № 1. — С. 52-57. — Бібліогр.: 15 назв. — англ. |
Репозиторії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Comprehensive simulations of the ITER divertor armour vaporization and brittle destruction under ELMs of
different sizes have revealed that the erosion rate of CFC armour is intolerable for an industrial reactor, but it can be
considerably reduced by the armour fibre structure optimization. The ITER core contamination with carbon is tolerable
for medium size ELMs, but large type I ELM can run the confinement into the disruption. Erosion of tungsten, an
alternative armour material, under ELMs influence is satisfactory, but the danger of the core plasma contamination with
tungsten is still not enough understood and potentially it could be very dangerous. Vaporization of tungsten, its cracking
and dust production during ELMs are rather urgent issues to be investigated for proper choice of the divertor armour
material for ITER. However, the erosion rate under action of the disruptive heat loads is tolerable for both armour
materials assuming few hundred disruptions falls out during ITER lifetime. |
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