Study of Z-dependence of impurity transport at JET

C. Giroud; C. Angioni; L. Carraro; I. H. Coffey; J. Hobirk; M. E. Puiatti; M. Valisa; A. D. Whiteford; P. Belo; T. M. Biewer; M. Brix; R. Buttery; E. Joffrin; L. Lauro Taroni; K. Lawson; P. Mantica; A. Meigs; V. Naulin; M. G. O'Mullane; K. D. Zastrow

Study of Z-dependence of impurity transport at JET

C. Giroud, C. Angioni, L. Carraro, I. H. Coffey, J. Hobirk, M. E. Puiatti, M. Valisa, A. D. Whiteford, P. Belo, T. M. Biewer, M. Brix, R. Buttery, E. Joffrin, L. Lauro Taroni, K. Lawson, P. Mantica, A. Meigs, V. Naulin, M. G. O'Mullane, K. D. Zastrow

Diagnostics and Control

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

First results of the database constituted for the study of the Z dependence of impurity transport have been reported. L and H-mode discharges have been studied. No clear difference is observed between L and H-mode in the transport coefficients in the core and at mid-radius. A dependence of the impurity peaking with Z is observed in the core for both L and H-mode and varies between -0.5 to a maximum of 4 m^-1 from C to Ni for the discharges studied. In the region between 0.5 and 0.6, the peaking of impurity profile shows a weaker dependence in Z from roughly a maximum of -0.5 to 0.5 m^-1 from C to Ni for the studied discharges. The observation of the pinch reversal from inward to outward for Ni [5] was confirmed following the application of ICRF heating power. This pinch reversal is also observed for C, Ne and Ar but is restricted to a change of transport in the plasma core within r/a less 0.25. The change of peaking following the application of ICRF is dependent on the charge of the impurity and is stronger for Ni than for C.

Original language	English
Title of host publication	34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Pages	901-904
Number of pages	4
Edition	2
State	Published - 2007
Event	34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 - Warsaw, Poland Duration: Jul 2 2007 → Jul 6 2007

Publication series

Name	34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts
Number	2
Volume	31

Conference

Conference	34th European Physical Society Conference on Plasma Physics 2007, EPS 2007
Country/Territory	Poland
City	Warsaw
Period	07/2/07 → 07/6/07

Cite this

Giroud, C., Angioni, C., Carraro, L., Coffey, I. H., Hobirk, J., Puiatti, M. E., Valisa, M., Whiteford, A. D., Belo, P., Biewer, T. M., Brix, M., Buttery, R., Joffrin, E., Lauro Taroni, L., Lawson, K., Mantica, P., Meigs, A., Naulin, V., O'Mullane, M. G., & Zastrow, K. D. (2007). Study of Z-dependence of impurity transport at JET. In 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts (2 ed., pp. 901-904). (34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts; Vol. 31, No. 2).

@inproceedings{9b4eb1737389467faad9d4f0432af256,

title = "Study of Z-dependence of impurity transport at JET",

abstract = "First results of the database constituted for the study of the Z dependence of impurity transport have been reported. L and H-mode discharges have been studied. No clear difference is observed between L and H-mode in the transport coefficients in the core and at mid-radius. A dependence of the impurity peaking with Z is observed in the core for both L and H-mode and varies between -0.5 to a maximum of 4 m-1 from C to Ni for the discharges studied. In the region between 0.5 and 0.6, the peaking of impurity profile shows a weaker dependence in Z from roughly a maximum of -0.5 to 0.5 m-1 from C to Ni for the studied discharges. The observation of the pinch reversal from inward to outward for Ni [5] was confirmed following the application of ICRF heating power. This pinch reversal is also observed for C, Ne and Ar but is restricted to a change of transport in the plasma core within r/a less 0.25. The change of peaking following the application of ICRF is dependent on the charge of the impurity and is stronger for Ni than for C.",

author = "C. Giroud and C. Angioni and L. Carraro and Coffey, {I. H.} and J. Hobirk and Puiatti, {M. E.} and M. Valisa and Whiteford, {A. D.} and P. Belo and Biewer, {T. M.} and M. Brix and R. Buttery and E. Joffrin and {Lauro Taroni}, L. and K. Lawson and P. Mantica and A. Meigs and V. Naulin and O'Mullane, {M. G.} and Zastrow, {K. D.}",

year = "2007",

language = "English",

isbn = "9781622763344",

series = "34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts",

number = "2",

pages = "901--904",

booktitle = "34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts",

edition = "2",

note = "34th European Physical Society Conference on Plasma Physics 2007, EPS 2007 ; Conference date: 02-07-2007 Through 06-07-2007",

}

Giroud, C, Angioni, C, Carraro, L, Coffey, IH, Hobirk, J, Puiatti, ME, Valisa, M, Whiteford, AD, Belo, P, Biewer, TM, Brix, M, Buttery, R, Joffrin, E, Lauro Taroni, L, Lawson, K, Mantica, P, Meigs, A, Naulin, V, O'Mullane, MG & Zastrow, KD 2007, Study of Z-dependence of impurity transport at JET. in 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts. 2 edn, 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts, no. 2, vol. 31, pp. 901-904, 34th European Physical Society Conference on Plasma Physics 2007, EPS 2007, Warsaw, Poland, 07/2/07.

Study of Z-dependence of impurity transport at JET. / Giroud, C.; Angioni, C.; Carraro, L. et al.
34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts. 2. ed. 2007. p. 901-904 (34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts; Vol. 31, No. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Study of Z-dependence of impurity transport at JET

AU - Giroud, C.

AU - Angioni, C.

AU - Carraro, L.

AU - Coffey, I. H.

AU - Hobirk, J.

AU - Puiatti, M. E.

AU - Valisa, M.

AU - Whiteford, A. D.

AU - Belo, P.

AU - Biewer, T. M.

AU - Brix, M.

AU - Buttery, R.

AU - Joffrin, E.

AU - Lauro Taroni, L.

AU - Lawson, K.

AU - Mantica, P.

AU - Meigs, A.

AU - Naulin, V.

AU - O'Mullane, M. G.

AU - Zastrow, K. D.

PY - 2007

Y1 - 2007

N2 - First results of the database constituted for the study of the Z dependence of impurity transport have been reported. L and H-mode discharges have been studied. No clear difference is observed between L and H-mode in the transport coefficients in the core and at mid-radius. A dependence of the impurity peaking with Z is observed in the core for both L and H-mode and varies between -0.5 to a maximum of 4 m-1 from C to Ni for the discharges studied. In the region between 0.5 and 0.6, the peaking of impurity profile shows a weaker dependence in Z from roughly a maximum of -0.5 to 0.5 m-1 from C to Ni for the studied discharges. The observation of the pinch reversal from inward to outward for Ni [5] was confirmed following the application of ICRF heating power. This pinch reversal is also observed for C, Ne and Ar but is restricted to a change of transport in the plasma core within r/a less 0.25. The change of peaking following the application of ICRF is dependent on the charge of the impurity and is stronger for Ni than for C.

AB - First results of the database constituted for the study of the Z dependence of impurity transport have been reported. L and H-mode discharges have been studied. No clear difference is observed between L and H-mode in the transport coefficients in the core and at mid-radius. A dependence of the impurity peaking with Z is observed in the core for both L and H-mode and varies between -0.5 to a maximum of 4 m-1 from C to Ni for the discharges studied. In the region between 0.5 and 0.6, the peaking of impurity profile shows a weaker dependence in Z from roughly a maximum of -0.5 to 0.5 m-1 from C to Ni for the studied discharges. The observation of the pinch reversal from inward to outward for Ni [5] was confirmed following the application of ICRF heating power. This pinch reversal is also observed for C, Ne and Ar but is restricted to a change of transport in the plasma core within r/a less 0.25. The change of peaking following the application of ICRF is dependent on the charge of the impurity and is stronger for Ni than for C.

UR - http://www.scopus.com/inward/record.url?scp=84873840982&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84873840982

SN - 9781622763344

T3 - 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts

SP - 901

EP - 904

BT - 34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts

T2 - 34th European Physical Society Conference on Plasma Physics 2007, EPS 2007

Y2 - 2 July 2007 through 6 July 2007

ER -

Study of Z-dependence of impurity transport at JET

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