Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak

Y. Xu; R. R. Weynants; M. Van Schoor; M. Vergote; S. Jachmich; M. W. Jakubowski; M. Mitri; D. Reiser; O. Schmitz; K. H. Finken; M. Lehnen; B. Unterberg; D. Reiter; U. Samm

doi:10.1016/j.jnucmat.2009.01.079

Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak

Y. Xu, R. R. Weynants, M. Van Schoor, M. Vergote, S. Jachmich, M. W. Jakubowski, M. Mitri, D. Reiser, O. Schmitz, K. H. Finken, M. Lehnen, B. Unterberg, D. Reiter, U. Samm

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Samenvatting

During the static 6/2 DED (dynamic ergodic divertor) experiments at TEXTOR, a significant impact of the edge resonant magnetic perturbation (RMP) on the blob transport in the scrape-off layer (SOL) has been observed. In ohmic discharges without the RMP, the turbulence intermittency extends deep into the SOL with a radially-outward speed of ∼1 km/s and ejects large turbulent flux. The fraction of the blob-carried to total turbulent flux is enhanced with increasing plasma density and reaches about 60% of the total flux in the SOL in high density discharges. With the application of the RMP, the blob size and their radially moving velocity are both reduced, resulting in a suppression of the blob transport in the SOL. It has been found that the suppression effect of the RMP on blobs is independent of the change of edge equilibrium profiles and the phasing variation of the RMP as well. The physical mechanisms appear to be consistent with the radial interchange motions of the blob structures.

Originele taal-2	Engels
Pagina's (van-tot)	372-375
Aantal pagina's	4
Tijdschrift	Journal of Nuclear Materials
Volume	390-391
Nummer van het tijdschrift	1
DOI's	https://doi.org/10.1016/j.jnucmat.2009.01.079
Status	Gepubliceerd - 15 jun. 2009

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Xu, Y., Weynants, R. R., Van Schoor, M., Vergote, M., Jachmich, S., Jakubowski, M. W., Mitri, M., Reiser, D., Schmitz, O., Finken, K. H., Lehnen, M., Unterberg, B., Reiter, D., & Samm, U. (2009). Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak. Journal of Nuclear Materials, 390-391(1), 372-375. https://doi.org/10.1016/j.jnucmat.2009.01.079

@article{b86273753a1b49a2b5b3cc919eb34eb9,

title = "Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak",

abstract = "During the static 6/2 DED (dynamic ergodic divertor) experiments at TEXTOR, a significant impact of the edge resonant magnetic perturbation (RMP) on the blob transport in the scrape-off layer (SOL) has been observed. In ohmic discharges without the RMP, the turbulence intermittency extends deep into the SOL with a radially-outward speed of ∼1 km/s and ejects large turbulent flux. The fraction of the blob-carried to total turbulent flux is enhanced with increasing plasma density and reaches about 60% of the total flux in the SOL in high density discharges. With the application of the RMP, the blob size and their radially moving velocity are both reduced, resulting in a suppression of the blob transport in the SOL. It has been found that the suppression effect of the RMP on blobs is independent of the change of edge equilibrium profiles and the phasing variation of the RMP as well. The physical mechanisms appear to be consistent with the radial interchange motions of the blob structures.",

author = "Y. Xu and Weynants, {R. R.} and {Van Schoor}, M. and M. Vergote and S. Jachmich and Jakubowski, {M. W.} and M. Mitri and D. Reiser and O. Schmitz and Finken, {K. H.} and M. Lehnen and B. Unterberg and D. Reiter and U. Samm",

year = "2009",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2009.01.079",

language = "English",

volume = "390-391",

pages = "372--375",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

number = "1",

}

Xu, Y, Weynants, RR, Van Schoor, M, Vergote, M, Jachmich, S, Jakubowski, MW, Mitri, M, Reiser, D, Schmitz, O, Finken, KH, Lehnen, M, Unterberg, B, Reiter, D & Samm, U 2009, 'Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak', Journal of Nuclear Materials, vol. 390-391, nr. 1, blz. 372-375. https://doi.org/10.1016/j.jnucmat.2009.01.079

TY - JOUR

T1 - Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak

AU - Xu, Y.

AU - Weynants, R. R.

AU - Van Schoor, M.

AU - Vergote, M.

AU - Jachmich, S.

AU - Jakubowski, M. W.

AU - Mitri, M.

AU - Reiser, D.

AU - Schmitz, O.

AU - Finken, K. H.

AU - Lehnen, M.

AU - Unterberg, B.

AU - Reiter, D.

AU - Samm, U.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - During the static 6/2 DED (dynamic ergodic divertor) experiments at TEXTOR, a significant impact of the edge resonant magnetic perturbation (RMP) on the blob transport in the scrape-off layer (SOL) has been observed. In ohmic discharges without the RMP, the turbulence intermittency extends deep into the SOL with a radially-outward speed of ∼1 km/s and ejects large turbulent flux. The fraction of the blob-carried to total turbulent flux is enhanced with increasing plasma density and reaches about 60% of the total flux in the SOL in high density discharges. With the application of the RMP, the blob size and their radially moving velocity are both reduced, resulting in a suppression of the blob transport in the SOL. It has been found that the suppression effect of the RMP on blobs is independent of the change of edge equilibrium profiles and the phasing variation of the RMP as well. The physical mechanisms appear to be consistent with the radial interchange motions of the blob structures.

AB - During the static 6/2 DED (dynamic ergodic divertor) experiments at TEXTOR, a significant impact of the edge resonant magnetic perturbation (RMP) on the blob transport in the scrape-off layer (SOL) has been observed. In ohmic discharges without the RMP, the turbulence intermittency extends deep into the SOL with a radially-outward speed of ∼1 km/s and ejects large turbulent flux. The fraction of the blob-carried to total turbulent flux is enhanced with increasing plasma density and reaches about 60% of the total flux in the SOL in high density discharges. With the application of the RMP, the blob size and their radially moving velocity are both reduced, resulting in a suppression of the blob transport in the SOL. It has been found that the suppression effect of the RMP on blobs is independent of the change of edge equilibrium profiles and the phasing variation of the RMP as well. The physical mechanisms appear to be consistent with the radial interchange motions of the blob structures.

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SN - 0022-3115

VL - 390-391

SP - 372

EP - 375

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

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Suppression of the intermittent blob-type transport by the resonant magnetic perturbation (RMP) in the TEXTOR tokamak

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