Materials effects and design implications of disruptions and off-normal events in ITER

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Damage to plasma-facing components (PFCs) and structural materials during abnormal plasma behavior such as hard disruptions, edge-localized modes (ELMs), and vertical displacement events (VDEs) is considered a serious life-limiting concern for these components. The PFCs in the International Thermonuclear Experimental Reactor (ITER), such as the divertor, limiter, and parts of the first wall, will be subjected to high energy deposition during these plasma instabilities. High erosion losses on material surfaces, high temperature rise in structural materials (particularly at the bonding interface), and high heat flux levels and possible burnout of the coolant tubes are critical constraints that severely limit component ... continued below

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28 p.

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Hassanein, A.; Federici, G.; Konkashbaev, I.; Zhitlukhin, A. & Litunovsky, V. August 1, 1997.

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Description

Damage to plasma-facing components (PFCs) and structural materials during abnormal plasma behavior such as hard disruptions, edge-localized modes (ELMs), and vertical displacement events (VDEs) is considered a serious life-limiting concern for these components. The PFCs in the International Thermonuclear Experimental Reactor (ITER), such as the divertor, limiter, and parts of the first wall, will be subjected to high energy deposition during these plasma instabilities. High erosion losses on material surfaces, high temperature rise in structural materials (particularly at the bonding interface), and high heat flux levels and possible burnout of the coolant tubes are critical constraints that severely limit component lifetime and therefore degrade reactor performance, safety, and economics. Recently developed computer models and simulation experiments are being used to evaluate various damage to PFCs during the abnormal events. The design implications of plasma-facing and nearby components are discussed, and recommendations are made to mitigate the effects of these events.

Physical Description

28 p.

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INIS; OSTI as DE97053387

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  • ISFNT-4: 4th international symposium on fusion nuclear technology, Tokyo (Japan), 6-11 Apr 1997

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  • Other: DE97053387
  • Report No.: ANL/TD/CP--92323
  • Report No.: CONF-970404--
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 548696
  • Archival Resource Key: ark:/67531/metadc697188

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  • August 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 3, 2016, 9:30 p.m.

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Hassanein, A.; Federici, G.; Konkashbaev, I.; Zhitlukhin, A. & Litunovsky, V. Materials effects and design implications of disruptions and off-normal events in ITER, article, August 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc697188/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.