Materials effects and design implications of disruptions and off-normal events in ITER
- Argonne National Lab., IL (United States)
- ITER Garching Joint Central Team (Germany)
- Troitsk Inst. for Innovation and Fusion Research (Russian Federation)
- Efremov Scientific Research Inst., St. Petersburg (Russian Federation)
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.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States); Russian Atomic Energy Commission, Moscow (Russian Federation)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 548696
- Report Number(s):
- ANL/TD/CP-92323; CONF-970404-; ON: DE97053387; TRN: 98:000905
- Resource Relation:
- Conference: ISFNT-4: 4th international symposium on fusion nuclear technology, Tokyo (Japan), 6-11 Apr 1997; Other Information: PBD: [1997]
- Country of Publication:
- United States
- Language:
- English
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