Active control of edge localized modes with a low n perturbation fields in the JET tokamak

Y. Liang; S. Jachmich; H. R. Koslowski; E. Nardon; A. Alfier; Y. Baranov; E. De La Luna; P. de Vries; T. Eich; H. G. Esser; D. Harting; V. Kiptily; A. Kreter; S. Gerasimov; M. P. Gryaznevich; D. Howell; G. Sergienko

doi:10.1016/j.jnucmat.2009.01.199

Active control of edge localized modes with a low n perturbation fields in the JET tokamak

Y. Liang, S. Jachmich, H. R. Koslowski, E. Nardon, A. Alfier, Y. Baranov, E. De La Luna, P. de Vries, T. Eich, H. G. Esser, D. Harting, V. Kiptily, A. Kreter, S. Gerasimov, M. P. Gryaznevich, D. Howell, G. Sergienko

Laboratory for Plasma Physics

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

Abstract

Active control of edge localized modes (ELMs) by using static external magnetic perturbation fields with low toroidal mode number, n, has been demonstrated for both, ITER baseline (q₉₅ ∼ 3) and high beta advanced tokamak scenarios at the JET tokamak. During the application of the low n field the ELM frequency increased by a factor up to ∼4-5. Reduction in carbon erosion and ELM peak heat fluxes on the divertor target by roughly the same factor as the increase of the ELM frequency has been observed. The frequency of the mitigated ELMs using a low n field is found to increase proportional to the total input heating power. Compensation of the density pump-out effect observed when the external low n field is applied has been achieved by gas fueling in low triangularity plasmas.

Original language	English
Pages (from-to)	733-739
Number of pages	7
Journal	Journal of Nuclear Materials
Volume	390-391
Issue number	1
DOIs	https://doi.org/10.1016/j.jnucmat.2009.01.199
Publication status	Published - 15 Jun 2009

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Liang, Y., Jachmich, S., Koslowski, H. R., Nardon, E., Alfier, A., Baranov, Y., De La Luna, E., de Vries, P., Eich, T., Esser, H. G., Harting, D., Kiptily, V., Kreter, A., Gerasimov, S., Gryaznevich, M. P., Howell, D., & Sergienko, G. (2009). Active control of edge localized modes with a low n perturbation fields in the JET tokamak. Journal of Nuclear Materials, 390-391(1), 733-739. https://doi.org/10.1016/j.jnucmat.2009.01.199

@article{4dfc9cb76d8441c4a45ae6e536e7f15a,

title = "Active control of edge localized modes with a low n perturbation fields in the JET tokamak",

abstract = "Active control of edge localized modes (ELMs) by using static external magnetic perturbation fields with low toroidal mode number, n, has been demonstrated for both, ITER baseline (q95 ∼ 3) and high beta advanced tokamak scenarios at the JET tokamak. During the application of the low n field the ELM frequency increased by a factor up to ∼4-5. Reduction in carbon erosion and ELM peak heat fluxes on the divertor target by roughly the same factor as the increase of the ELM frequency has been observed. The frequency of the mitigated ELMs using a low n field is found to increase proportional to the total input heating power. Compensation of the density pump-out effect observed when the external low n field is applied has been achieved by gas fueling in low triangularity plasmas.",

author = "Y. Liang and S. Jachmich and Koslowski, \{H. R.\} and E. Nardon and A. Alfier and Y. Baranov and \{De La Luna\}, E. and \{de Vries\}, P. and T. Eich and Esser, \{H. G.\} and D. Harting and V. Kiptily and A. Kreter and S. Gerasimov and Gryaznevich, \{M. P.\} and D. Howell and G. Sergienko",

year = "2009",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2009.01.199",

language = "English",

volume = "390-391",

pages = "733--739",

journal = "Journal of Nuclear Materials",

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Liang, Y, Jachmich, S, Koslowski, HR, Nardon, E, Alfier, A, Baranov, Y, De La Luna, E, de Vries, P, Eich, T, Esser, HG, Harting, D, Kiptily, V, Kreter, A, Gerasimov, S, Gryaznevich, MP, Howell, D & Sergienko, G 2009, 'Active control of edge localized modes with a low n perturbation fields in the JET tokamak', Journal of Nuclear Materials, vol. 390-391, no. 1, pp. 733-739. https://doi.org/10.1016/j.jnucmat.2009.01.199

TY - JOUR

T1 - Active control of edge localized modes with a low n perturbation fields in the JET tokamak

AU - Liang, Y.

AU - Jachmich, S.

AU - Koslowski, H. R.

AU - Nardon, E.

AU - Alfier, A.

AU - Baranov, Y.

AU - De La Luna, E.

AU - de Vries, P.

AU - Eich, T.

AU - Esser, H. G.

AU - Harting, D.

AU - Kiptily, V.

AU - Kreter, A.

AU - Gerasimov, S.

AU - Gryaznevich, M. P.

AU - Howell, D.

AU - Sergienko, G.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - Active control of edge localized modes (ELMs) by using static external magnetic perturbation fields with low toroidal mode number, n, has been demonstrated for both, ITER baseline (q95 ∼ 3) and high beta advanced tokamak scenarios at the JET tokamak. During the application of the low n field the ELM frequency increased by a factor up to ∼4-5. Reduction in carbon erosion and ELM peak heat fluxes on the divertor target by roughly the same factor as the increase of the ELM frequency has been observed. The frequency of the mitigated ELMs using a low n field is found to increase proportional to the total input heating power. Compensation of the density pump-out effect observed when the external low n field is applied has been achieved by gas fueling in low triangularity plasmas.

AB - Active control of edge localized modes (ELMs) by using static external magnetic perturbation fields with low toroidal mode number, n, has been demonstrated for both, ITER baseline (q95 ∼ 3) and high beta advanced tokamak scenarios at the JET tokamak. During the application of the low n field the ELM frequency increased by a factor up to ∼4-5. Reduction in carbon erosion and ELM peak heat fluxes on the divertor target by roughly the same factor as the increase of the ELM frequency has been observed. The frequency of the mitigated ELMs using a low n field is found to increase proportional to the total input heating power. Compensation of the density pump-out effect observed when the external low n field is applied has been achieved by gas fueling in low triangularity plasmas.

UR - https://www.scopus.com/pages/publications/67349261073

U2 - 10.1016/j.jnucmat.2009.01.199

DO - 10.1016/j.jnucmat.2009.01.199

M3 - Article

AN - SCOPUS:67349261073

SN - 0022-3115

VL - 390-391

SP - 733

EP - 739

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1

ER -

Active control of edge localized modes with a low n perturbation fields in the JET tokamak

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