Self-sustained divertor oscillations in ASDEX Upgrade

P. Heinrich; P. Manz; M. Bernert; G. Birkenmeier; D. Brida; M. Cavedon; P. David; M. Griener; G. Haas; T. Happel; U. Plank; F. Reimold; U. Stroth; M. Wischmeier; W. Zhang

doi:10.1088/1741-4326/ab8a05

Self-sustained divertor oscillations in ASDEX Upgrade

P. Heinrich, P. Manz, M. Bernert, G. Birkenmeier, D. Brida, M. Cavedon, P. David, M. Griener, G. Haas, T. Happel, U. Plank, F. Reimold, U. Stroth, M. Wischmeier, W. Zhang

Chair of Plasmarand- und Divertorphysik

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

11 Scopus citations

Abstract

Alternating radiation phenomena between the inner and outer divertor regions in the sub kHz range are investigated in the tokamak ASDEX Upgrade. While the inner divertor oscillates between the onset and fluctuating state of detachment, the outer divertor oscillates between conditions where it can maintain high recycling conditions or not. The detachment state of the inner divertor determines the magnitude of the neutral flux through the private flux region, thus sets the recycling conditions at the outer divertor. In return these recycling conditions determine the particle content in the divertor, hence the detachment state at the inner divertor.

Original language	English
Article number	076013
Journal	Nuclear Fusion
Volume	60
Issue number	7
DOIs	https://doi.org/10.1088/1741-4326/ab8a05
State	Published - Jul 2020

Keywords

detachment
divertor
divertor oscillations
magnetically confined plasma
neutral flux through PFR
scrape-off layer
tokamak

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10.1088/1741-4326/ab8a05

Cite this

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title = "Self-sustained divertor oscillations in ASDEX Upgrade",

abstract = "Alternating radiation phenomena between the inner and outer divertor regions in the sub kHz range are investigated in the tokamak ASDEX Upgrade. While the inner divertor oscillates between the onset and fluctuating state of detachment, the outer divertor oscillates between conditions where it can maintain high recycling conditions or not. The detachment state of the inner divertor determines the magnitude of the neutral flux through the private flux region, thus sets the recycling conditions at the outer divertor. In return these recycling conditions determine the particle content in the divertor, hence the detachment state at the inner divertor.",

keywords = "detachment, divertor, divertor oscillations, magnetically confined plasma, neutral flux through PFR, scrape-off layer, tokamak",

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T1 - Self-sustained divertor oscillations in ASDEX Upgrade

AU - Heinrich, P.

AU - Manz, P.

AU - Bernert, M.

AU - Birkenmeier, G.

AU - Brida, D.

AU - Cavedon, M.

AU - David, P.

AU - Griener, M.

AU - Haas, G.

AU - Happel, T.

AU - Plank, U.

AU - Reimold, F.

AU - Stroth, U.

AU - Wischmeier, M.

AU - Zhang, W.

N1 - Publisher Copyright: © EURATOM 2020.

PY - 2020/7

Y1 - 2020/7

N2 - Alternating radiation phenomena between the inner and outer divertor regions in the sub kHz range are investigated in the tokamak ASDEX Upgrade. While the inner divertor oscillates between the onset and fluctuating state of detachment, the outer divertor oscillates between conditions where it can maintain high recycling conditions or not. The detachment state of the inner divertor determines the magnitude of the neutral flux through the private flux region, thus sets the recycling conditions at the outer divertor. In return these recycling conditions determine the particle content in the divertor, hence the detachment state at the inner divertor.

AB - Alternating radiation phenomena between the inner and outer divertor regions in the sub kHz range are investigated in the tokamak ASDEX Upgrade. While the inner divertor oscillates between the onset and fluctuating state of detachment, the outer divertor oscillates between conditions where it can maintain high recycling conditions or not. The detachment state of the inner divertor determines the magnitude of the neutral flux through the private flux region, thus sets the recycling conditions at the outer divertor. In return these recycling conditions determine the particle content in the divertor, hence the detachment state at the inner divertor.

KW - detachment

KW - divertor

KW - divertor oscillations

KW - magnetically confined plasma

KW - neutral flux through PFR

KW - scrape-off layer

KW - tokamak

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DO - 10.1088/1741-4326/ab8a05

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SN - 0029-5515

VL - 60

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 7

M1 - 076013

ER -

Self-sustained divertor oscillations in ASDEX Upgrade

Abstract

Keywords

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