On a possibility of explosive material erosion under conditions of ITER disruption event

“…This phenomenon has been observed in different disruption simulation facilities such as electron beams [16], laser [17], and plasma guns and other devices [18]. Models were developed to evaluate erosion behavior and lifetime of CBMS of plasma facing and nearby components due to brittle destruction during plasma instabiMies [3].…”

Section: Erosion Mechanisms Of Carbon-based-materialsmentioning

confidence: 99%

“…From these experiments, the energy for brittle destruction of graphite similar to the MPG-9 graphite is y-., estimated to be =10 kJ/g, or 20 kJ/cm3 [18]. Therefore, for a net power flux to the material surface during the disruption of =300 kW/cm2, the deposited energy for a time of 1 ms is =0.3 kJ/cm2, which results in net erosion of =150 ym per disruption.…”

Section: Erosion Mechanisms Of Carbon-based-materialsmentioning

confidence: 99%

Theory and models of material erosion and lifetime during plasma instabilities in a tokamak environment

Hassanein

Konkashbaev

2000

Fusion Engineering and Design

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“…This phenomenon has been observed in several di erent disruption simulation facilities such as electron beams [16,17], laser [18], and plasma gun and other devices [11,19]. Models to evaluate erosion behavior and lifetime of CBMs of plasma-facing and nearby components due to brittle destruction during plasma instabilities were also developed and implemented in the SPLASH code.…”

Section: Macroscopic Erosion Of Pfcs (Splash Code)mentioning

confidence: 99%

Comprehensive physical models and simulation package for plasma/material interactions during plasma instabilities

Hassanein

Konkashbaev

1999

Journal of Nuclear Materials

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Damage to plasma-facing components (PFCs) from plasma instabilities remains a major obstacle to a successful tokamak concept. The extent of the damage depends on the detailed physics of the disrupting plasma, as well as on the physics of plasma-material interactions. A comprehensive computer package called High Energy Interaction with General Heterogeneous Target Systems (HEIGHTS) has been developed and consists of several integrated computer models that follow the beginning of a plasma disruption at the scrape-o layer (SOL) through the transport of the eroded debris and splashed target materials to nearby locations as a result of the deposited energy. The package can study, for the ®rst time, plasma-turbulent behavior in the SOL and predict the plasma parameters and conditions at the divertor plate. Full two-dimensional (2-D) comprehensive radiation magnetohydrodynamic (MHD) models are coupled with target thermodynamics and liquid hydrodynamics to evaluate the integrated response of plasma-facing materials. Factors that in¯uence the lifetime of plasma-facing and nearby components, such as loss of vapor cloud con®nement and vapor removal due to MHD e ects, damage to nearby components due to intense vapor radiation, melt splashing, and brittle destruction of target materials, are also modeled and discussed. Ó

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On a possibility of explosive material erosion under conditions of ITER disruption event

Cited by 23 publications

References 4 publications

Theoretical modeling of shielding for plasma flow and electron beam heating

Theoretical modeling of shielding for plasma flow and electron beam heating

Theory and models of material erosion and lifetime during plasma instabilities in a tokamak environment

Comprehensive physical models and simulation package for plasma/material interactions during plasma instabilities

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