ELMs and strike point jumps

Emilia R. Solano; S. Jachmich; F. Villone; N. Hawkes; Y. Corre; R. A. Pitts; A. Loarte; B. Alper; K. Guenther; A. Koroktov; M. Stamp; P. Andrew; S. A. Arshad; J. Conboy; T. Bolzonella; E. Rachlew; M. Kempenaars; A. Cenedese; D. Testa

doi:10.1016/j.jnucmat.2004.09.067

ELMs and strike point jumps

Emilia R. Solano, S. Jachmich, F. Villone, N. Hawkes, Y. Corre, R. A. Pitts, A. Loarte, B. Alper, K. Guenther, A. Koroktov, M. Stamp, P. Andrew, S. A. Arshad, J. Conboy, T. Bolzonella, E. Rachlew, M. Kempenaars, A. Cenedese, D. Testa

Laboratory for Plasma Physics

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

Abstract

If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the strike points at each ELM, towards the plasma centre. An experimental study of this conjectured model of the ELM has been made at JET, showing that in all cases of Type I ELMs studied, strike point shifts were observed. In two cases studied in detail, the estimated equilibrium changes provoked by flux surface peeling agree qualitatively with the observed strike point shifts.

Original language	English
Pages (from-to)	747-750
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	337-339
Issue number	1-3 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jnucmat.2004.09.067
Publication status	Published - 1 Mar 2005

Keywords

ELM
Edge currents
Edge pedestal
Edge plasma
JET

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10.1016/j.jnucmat.2004.09.067

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Solano, E. R., Jachmich, S., Villone, F., Hawkes, N., Corre, Y., Pitts, R. A., Loarte, A., Alper, B., Guenther, K., Koroktov, A., Stamp, M., Andrew, P., Arshad, S. A., Conboy, J., Bolzonella, T., Rachlew, E., Kempenaars, M., Cenedese, A., & Testa, D. (2005). ELMs and strike point jumps. Journal of Nuclear Materials, 337-339(1-3 SPEC. ISS.), 747-750. https://doi.org/10.1016/j.jnucmat.2004.09.067

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title = "ELMs and strike point jumps",

abstract = "If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the strike points at each ELM, towards the plasma centre. An experimental study of this conjectured model of the ELM has been made at JET, showing that in all cases of Type I ELMs studied, strike point shifts were observed. In two cases studied in detail, the estimated equilibrium changes provoked by flux surface peeling agree qualitatively with the observed strike point shifts.",

keywords = "ELM, Edge currents, Edge pedestal, Edge plasma, JET",

author = "Solano, \{Emilia R.\} and S. Jachmich and F. Villone and N. Hawkes and Y. Corre and Pitts, \{R. A.\} and A. Loarte and B. Alper and K. Guenther and A. Koroktov and M. Stamp and P. Andrew and Arshad, \{S. A.\} and J. Conboy and T. Bolzonella and E. Rachlew and M. Kempenaars and A. Cenedese and D. Testa",

year = "2005",

month = mar,

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doi = "10.1016/j.jnucmat.2004.09.067",

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Solano, ER, Jachmich, S, Villone, F, Hawkes, N, Corre, Y, Pitts, RA, Loarte, A, Alper, B, Guenther, K, Koroktov, A, Stamp, M, Andrew, P, Arshad, SA, Conboy, J, Bolzonella, T, Rachlew, E, Kempenaars, M, Cenedese, A & Testa, D 2005, 'ELMs and strike point jumps', Journal of Nuclear Materials, vol. 337-339, no. 1-3 SPEC. ISS., pp. 747-750. https://doi.org/10.1016/j.jnucmat.2004.09.067

TY - JOUR

T1 - ELMs and strike point jumps

AU - Solano, Emilia R.

AU - Jachmich, S.

AU - Villone, F.

AU - Hawkes, N.

AU - Corre, Y.

AU - Pitts, R. A.

AU - Loarte, A.

AU - Alper, B.

AU - Guenther, K.

AU - Koroktov, A.

AU - Stamp, M.

AU - Andrew, P.

AU - Arshad, S. A.

AU - Conboy, J.

AU - Bolzonella, T.

AU - Rachlew, E.

AU - Kempenaars, M.

AU - Cenedese, A.

AU - Testa, D.

PY - 2005/3/1

Y1 - 2005/3/1

N2 - If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the strike points at each ELM, towards the plasma centre. An experimental study of this conjectured model of the ELM has been made at JET, showing that in all cases of Type I ELMs studied, strike point shifts were observed. In two cases studied in detail, the estimated equilibrium changes provoked by flux surface peeling agree qualitatively with the observed strike point shifts.

AB - If an ELM is a peeling of flux surfaces from the plasma, due to a broken separatrix, current density is lost as well as particles and energy. The fast loss of a current-carrying plasma layer modifies the plasma equilibrium, leading to sudden shifts in the strike points at each ELM, towards the plasma centre. An experimental study of this conjectured model of the ELM has been made at JET, showing that in all cases of Type I ELMs studied, strike point shifts were observed. In two cases studied in detail, the estimated equilibrium changes provoked by flux surface peeling agree qualitatively with the observed strike point shifts.

KW - ELM

KW - Edge currents

KW - Edge pedestal

KW - Edge plasma

KW - JET

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DO - 10.1016/j.jnucmat.2004.09.067

M3 - Article

AN - SCOPUS:13844296889

SN - 0022-3115

VL - 337-339

SP - 747

EP - 750

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3 SPEC. ISS.

ER -

ELMs and strike point jumps

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Keywords

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