What question did this study set out to answer?

To evaluate the efficacy of massive noble gas injection for increasing plasma density toward the critical threshold required to collisonally suppress runaway electron avalanches during tokamak disruptions.

November 16, 2009Plasma Physics and Controlled FusionOpen Access

Disruption studies in ASDEX Upgrade in view of ITER

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Authors

GPG. PautassoMax Planck Society DCD. CosterMax Planck Institute for Plasma Physics TET. EichFusion Academy

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Implication

Tokamak experiment reveals massive neon injection reaches 24% of critical density for runaway electron suppression, highlighting the need for distributed injection valves.

Key Points

To evaluate the efficacy of massive noble gas injection for increasing plasma density toward the critical threshold required to collisonally suppress runaway electron avalanches during tokamak disruptions.
Conducted disruption mitigation experiments on the ASDEX Upgrade tokamak.
Delivered a massive injection of 3.3 bar·l of neon gas into the plasma.
Assessed resultant effective electron density along with toroidal and poloidal spatial distributions.
Attained an effective electron density equal to 24% of the critical density necessary for runaway electron collisional suppression.
Produced severe poloidal and toroidal density asymmetries following high-volume gas injection, demonstrating that several distributed valves are required for homogeneous gas delivery.

Cite This Study

Pautasso et al. (2009) studied this question.

synapsesocial.com/papers/6a8484f922fbfbf8d78d7219 https://doi.org/10.1088/0741-3335/51/12/124056

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Implication

Tokamak experiment reveals massive neon injection reaches 24% of critical density for runaway electron suppression, highlighting the need for distributed injection valves.

Disruption studies in ASDEX Upgrade in view of ITER

Discussion

Member takes

Implication

Key Points

Cite This Study

Disruption studies in ASDEX Upgrade in view of ITER

Discussion

Member takes

Implication

Key Points

Cite This Study

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