Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak

Y. Liang; H. R. Koslowski; P. R. Thomas; E. Nardon; B. Alper; P. Andrew; Y. Andrew; G. Arnoux; Y. Baranov; M. Bécoulet; M. Beurskens; T. Biewer; M. Bigi; K. Crombe; E. De La Luna; P. De Vries; W. Fundamenski; S. Gerasimov; C. Giroud; M. P. Gryaznevich; N. Hawkes; S. Hotchin; D. Howell; S. Jachmich; V. Kiptily; L. Moreira; V. Parail; S. D. Pinches; E. Rachlew; O. Zimmermann

doi:10.1103/PhysRevLett.98.265004

Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak

Y. Liang, H. R. Koslowski, P. R. Thomas, E. Nardon, B. Alper, P. Andrew, Y. Andrew, G. Arnoux, Y. Baranov, M. Bécoulet, M. Beurskens, T. Biewer, M. Bigi, K. Crombe, E. De La Luna, P. De Vries, W. Fundamenski, S. Gerasimov, C. Giroud, M. P. GryaznevichN. Hawkes, S. Hotchin, D. Howell, S. Jachmich, V. Kiptily, L. Moreira, V. Parail, S. D. Pinches, E. Rachlew, O. Zimmermann

Diagnostics and Control

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Abstract

Type-I edge-localized modes (ELMs) have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma. During the application of the n=1 field the ELM frequency increased by a factor of 4 and the amplitude of the Dα signal decreased. The energy loss per ELM normalized to the total stored energy, ΔW/W, dropped to values below 2%. Transport analyses shows no or only a moderate (up to 20%) degradation of energy confinement time during the ELM mitigation phase.

Original language	English
Article number	265004
Journal	Physical Review Letters
Volume	98
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.98.265004
State	Published - Jun 29 2007

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Liang, Y., Koslowski, H. R., Thomas, P. R., Nardon, E., Alper, B., Andrew, P., Andrew, Y., Arnoux, G., Baranov, Y., Bécoulet, M., Beurskens, M., Biewer, T., Bigi, M., Crombe, K., De La Luna, E., De Vries, P., Fundamenski, W., Gerasimov, S., Giroud, C., ... Zimmermann, O. (2007). Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak. Physical Review Letters, 98(26), Article 265004. https://doi.org/10.1103/PhysRevLett.98.265004

@article{a4240497af6f4bc4a741cc7e83995fdf,

title = "Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak",

abstract = "Type-I edge-localized modes (ELMs) have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma. During the application of the n=1 field the ELM frequency increased by a factor of 4 and the amplitude of the Dα signal decreased. The energy loss per ELM normalized to the total stored energy, ΔW/W, dropped to values below 2%. Transport analyses shows no or only a moderate (up to 20%) degradation of energy confinement time during the ELM mitigation phase.",

author = "Y. Liang and Koslowski, {H. R.} and Thomas, {P. R.} and E. Nardon and B. Alper and P. Andrew and Y. Andrew and G. Arnoux and Y. Baranov and M. B{\'e}coulet and M. Beurskens and T. Biewer and M. Bigi and K. Crombe and {De La Luna}, E. and {De Vries}, P. and W. Fundamenski and S. Gerasimov and C. Giroud and Gryaznevich, {M. P.} and N. Hawkes and S. Hotchin and D. Howell and S. Jachmich and V. Kiptily and L. Moreira and V. Parail and Pinches, {S. D.} and E. Rachlew and O. Zimmermann",

year = "2007",

month = jun,

day = "29",

doi = "10.1103/PhysRevLett.98.265004",

language = "English",

volume = "98",

journal = "Physical Review Letters",

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publisher = "American Physical Society",

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Liang, Y, Koslowski, HR, Thomas, PR, Nardon, E, Alper, B, Andrew, P, Andrew, Y, Arnoux, G, Baranov, Y, Bécoulet, M, Beurskens, M, Biewer, T, Bigi, M, Crombe, K, De La Luna, E, De Vries, P, Fundamenski, W, Gerasimov, S, Giroud, C, Gryaznevich, MP, Hawkes, N, Hotchin, S, Howell, D, Jachmich, S, Kiptily, V, Moreira, L, Parail, V, Pinches, SD, Rachlew, E & Zimmermann, O 2007, 'Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak', Physical Review Letters, vol. 98, no. 26, 265004. https://doi.org/10.1103/PhysRevLett.98.265004

TY - JOUR

T1 - Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak

AU - Liang, Y.

AU - Koslowski, H. R.

AU - Thomas, P. R.

AU - Nardon, E.

AU - Alper, B.

AU - Andrew, P.

AU - Andrew, Y.

AU - Arnoux, G.

AU - Baranov, Y.

AU - Bécoulet, M.

AU - Beurskens, M.

AU - Biewer, T.

AU - Bigi, M.

AU - Crombe, K.

AU - De La Luna, E.

AU - De Vries, P.

AU - Fundamenski, W.

AU - Gerasimov, S.

AU - Giroud, C.

AU - Gryaznevich, M. P.

AU - Hawkes, N.

AU - Hotchin, S.

AU - Howell, D.

AU - Jachmich, S.

AU - Kiptily, V.

AU - Moreira, L.

AU - Parail, V.

AU - Pinches, S. D.

AU - Rachlew, E.

AU - Zimmermann, O.

PY - 2007/6/29

Y1 - 2007/6/29

N2 - Type-I edge-localized modes (ELMs) have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma. During the application of the n=1 field the ELM frequency increased by a factor of 4 and the amplitude of the Dα signal decreased. The energy loss per ELM normalized to the total stored energy, ΔW/W, dropped to values below 2%. Transport analyses shows no or only a moderate (up to 20%) degradation of energy confinement time during the ELM mitigation phase.

AB - Type-I edge-localized modes (ELMs) have been mitigated at the JET tokamak using a static external n=1 perturbation field generated by four error field correction coils located far from the plasma. During the application of the n=1 field the ELM frequency increased by a factor of 4 and the amplitude of the Dα signal decreased. The energy loss per ELM normalized to the total stored energy, ΔW/W, dropped to values below 2%. Transport analyses shows no or only a moderate (up to 20%) degradation of energy confinement time during the ELM mitigation phase.

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DO - 10.1103/PhysRevLett.98.265004

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VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

M1 - 265004

ER -

Active control of type-I edge-localized modes with n=1 perturbation fields in the JET tokamak

Abstract

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