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Observation of Continuous Divertor Detachment in H-mode Discharges in ASDEX Upgrade

Salmon, NA (1995) Observation of Continuous Divertor Detachment in H-mode Discharges in ASDEX Upgrade. Physical Review Letters, 74. ISSN 0031-9007

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Abstract

Feedback-controlled puffing of neon and deuterium has been applied to control the edge-localized-mode behavior and the target plate power deposition during high-power H -mode discharges in ASDEX Upgrade. A regime has been found in which more than 90% of the heating power is lost through radiation and divertor detachment occurs, without deterioration of the energy confinement. The plasma remains in the H mode, exhibiting small-amplitude, high-frequency ELM's, which do not penetrate to the target plates in the strike zone region.

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