Massive gas injections in JET - Impact on wall conditions

Uron Kruezi; M. Lehnen; V. Philipps; S. Brezinsek; G. Sergienko; S. Bozenkhov; S. Jachmich; P. D. Morgan; G. F. Matthews

doi:10.1016/j.jnucmat.2010.11.069

Massive gas injections in JET - Impact on wall conditions

Uron Kruezi, M. Lehnen, V. Philipps, S. Brezinsek, G. Sergienko, S. Bozenkhov, S. Jachmich, P. D. Morgan, G. F. Matthews

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Disruptions are a critical issue for large scale tokamaks due to the potential damage to plasma facing components. Massive Gas Injection (MGI) is considered as a "last resort" method for disruption mitigation. A MGI system based on the Disruption Mitigation Valve (DMV) has been brought into operation at JET. Injections of neon, argon and its mixtures with deuterium show distinct effects on the machine condition during and after MGI-induced disruptions. MGI with pure argon shows a continuous accumulation in consecutive pulses. Neon on the contrary shows a fast saturation due to trapping in carbon PFCs.

Original language	English
Pages (from-to)	S828-S831
Journal	Journal of Nuclear Materials
Volume	415
Issue number	1 SUPPL
DOIs	https://doi.org/10.1016/j.jnucmat.2010.11.069
Publication status	Published - 1 Aug 2011

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10.1016/j.jnucmat.2010.11.069

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title = "Massive gas injections in JET - Impact on wall conditions",

abstract = "Disruptions are a critical issue for large scale tokamaks due to the potential damage to plasma facing components. Massive Gas Injection (MGI) is considered as a {"}last resort{"} method for disruption mitigation. A MGI system based on the Disruption Mitigation Valve (DMV) has been brought into operation at JET. Injections of neon, argon and its mixtures with deuterium show distinct effects on the machine condition during and after MGI-induced disruptions. MGI with pure argon shows a continuous accumulation in consecutive pulses. Neon on the contrary shows a fast saturation due to trapping in carbon PFCs.",

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AU - Kruezi, Uron

AU - Lehnen, M.

AU - Philipps, V.

AU - Brezinsek, S.

AU - Sergienko, G.

AU - Bozenkhov, S.

AU - Jachmich, S.

AU - Morgan, P. D.

AU - Matthews, G. F.

PY - 2011/8/1

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N2 - Disruptions are a critical issue for large scale tokamaks due to the potential damage to plasma facing components. Massive Gas Injection (MGI) is considered as a "last resort" method for disruption mitigation. A MGI system based on the Disruption Mitigation Valve (DMV) has been brought into operation at JET. Injections of neon, argon and its mixtures with deuterium show distinct effects on the machine condition during and after MGI-induced disruptions. MGI with pure argon shows a continuous accumulation in consecutive pulses. Neon on the contrary shows a fast saturation due to trapping in carbon PFCs.

AB - Disruptions are a critical issue for large scale tokamaks due to the potential damage to plasma facing components. Massive Gas Injection (MGI) is considered as a "last resort" method for disruption mitigation. A MGI system based on the Disruption Mitigation Valve (DMV) has been brought into operation at JET. Injections of neon, argon and its mixtures with deuterium show distinct effects on the machine condition during and after MGI-induced disruptions. MGI with pure argon shows a continuous accumulation in consecutive pulses. Neon on the contrary shows a fast saturation due to trapping in carbon PFCs.

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M3 - Article

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VL - 415

SP - S828-S831

JO - Journal of Nuclear Materials

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IS - 1 SUPPL

ER -

Massive gas injections in JET - Impact on wall conditions

Abstract

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