Non-resonant magnetic braking on JET and TEXTOR

Y. Sun, Y. Liang, H.R. Koslowski, S. Jachmich, A. Alfier, O. Asunta, G. Corrigan, E. Delabie, C. Giroud, M.P. Gryaznevich, D. Harting, T. Hender, E. Nardon, V. Naulin, V. Parail, Tuomas Tala, C. Wiegman, S. Wiesen, T. Zhang, K.C. ShaingJET-EFDA collaborators

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

The non-resonant magnetic braking effect induced by an NonAxisymmetric Magnetic Perturbation (NAMP) is investigated on JET and TEXTOR. The collionality dependence of the torque induced by the n = 1 NAMP field is obtained on JET. The observed torque is located mainly in the plasma core (normalized ρ < 0.4). It increases with decreasing collisionality. The calculation shows that it is close to the transition between the ν − √ν and the superbanana plateau regimes in the plasma core. The NTV torque is modeled by using the smoothly connnected formula in the collisionless regimes. The calculated collisionality dependence shows the same tendency as the experimental observation due to the resonant particle effect. The strongest NTV torque is also located in the plasma core because of the resonant particle effect. However, the magnitudes of the NTV torque is still about 1-2 orders smaller than the observed ones on JET. There is no obvious braking effect with m/n = 6/2 NAMP generated by the Dynamic Ergodic Divertor (DED) on TEXTOR. The calculated NTV torque on TEXTOR is also very small.
Original languageEnglish
Title of host publicationProceedings of the 23rd IAEA Fusion Energy Conference
PublisherInternational Atomic Energy Agency IAEA
Publication statusPublished - 2010
MoE publication typeNot Eligible
Event23rd IAEA Fusion Energy Conference, FEC 2010 - Daejon, Korea, Republic of
Duration: 10 Oct 201016 Oct 2010

Conference

Conference23rd IAEA Fusion Energy Conference, FEC 2010
CountryKorea, Republic of
CityDaejon
Period10/10/1016/10/10

Fingerprint

braking
torque
perturbation
plateaus
tendencies

Keywords

  • plasma physics
  • fusion energy

Cite this

Sun, Y., Liang, Y., Koslowski, H. R., Jachmich, S., Alfier, A., Asunta, O., ... JET-EFDA collaborators (2010). Non-resonant magnetic braking on JET and TEXTOR. In Proceedings of the 23rd IAEA Fusion Energy Conference [EXS/P3-06] International Atomic Energy Agency IAEA.
Sun, Y. ; Liang, Y. ; Koslowski, H.R. ; Jachmich, S. ; Alfier, A. ; Asunta, O. ; Corrigan, G. ; Delabie, E. ; Giroud, C. ; Gryaznevich, M.P. ; Harting, D. ; Hender, T. ; Nardon, E. ; Naulin, V. ; Parail, V. ; Tala, Tuomas ; Wiegman, C. ; Wiesen, S. ; Zhang, T. ; Shaing, K.C. ; JET-EFDA collaborators. / Non-resonant magnetic braking on JET and TEXTOR. Proceedings of the 23rd IAEA Fusion Energy Conference. International Atomic Energy Agency IAEA, 2010.
@inproceedings{ffdd658f17cd483f8edbd2e2cc5ab0d9,
title = "Non-resonant magnetic braking on JET and TEXTOR",
abstract = "The non-resonant magnetic braking effect induced by an NonAxisymmetric Magnetic Perturbation (NAMP) is investigated on JET and TEXTOR. The collionality dependence of the torque induced by the n = 1 NAMP field is obtained on JET. The observed torque is located mainly in the plasma core (normalized ρ < 0.4). It increases with decreasing collisionality. The calculation shows that it is close to the transition between the ν − √ν and the superbanana plateau regimes in the plasma core. The NTV torque is modeled by using the smoothly connnected formula in the collisionless regimes. The calculated collisionality dependence shows the same tendency as the experimental observation due to the resonant particle effect. The strongest NTV torque is also located in the plasma core because of the resonant particle effect. However, the magnitudes of the NTV torque is still about 1-2 orders smaller than the observed ones on JET. There is no obvious braking effect with m/n = 6/2 NAMP generated by the Dynamic Ergodic Divertor (DED) on TEXTOR. The calculated NTV torque on TEXTOR is also very small.",
keywords = "plasma physics, fusion energy",
author = "Y. Sun and Y. Liang and H.R. Koslowski and S. Jachmich and A. Alfier and O. Asunta and G. Corrigan and E. Delabie and C. Giroud and M.P. Gryaznevich and D. Harting and T. Hender and E. Nardon and V. Naulin and V. Parail and Tuomas Tala and C. Wiegman and S. Wiesen and T. Zhang and K.C. Shaing and {JET-EFDA collaborators}",
year = "2010",
language = "English",
booktitle = "Proceedings of the 23rd IAEA Fusion Energy Conference",
publisher = "International Atomic Energy Agency IAEA",
address = "Austria",

}

Sun, Y, Liang, Y, Koslowski, HR, Jachmich, S, Alfier, A, Asunta, O, Corrigan, G, Delabie, E, Giroud, C, Gryaznevich, MP, Harting, D, Hender, T, Nardon, E, Naulin, V, Parail, V, Tala, T, Wiegman, C, Wiesen, S, Zhang, T, Shaing, KC & JET-EFDA collaborators 2010, Non-resonant magnetic braking on JET and TEXTOR. in Proceedings of the 23rd IAEA Fusion Energy Conference., EXS/P3-06, International Atomic Energy Agency IAEA, 23rd IAEA Fusion Energy Conference, FEC 2010, Daejon, Korea, Republic of, 10/10/10.

Non-resonant magnetic braking on JET and TEXTOR. / Sun, Y.; Liang, Y.; Koslowski, H.R.; Jachmich, S.; Alfier, A.; Asunta, O.; Corrigan, G.; Delabie, E.; Giroud, C.; Gryaznevich, M.P.; Harting, D.; Hender, T.; Nardon, E.; Naulin, V.; Parail, V.; Tala, Tuomas; Wiegman, C.; Wiesen, S.; Zhang, T.; Shaing, K.C.; JET-EFDA collaborators.

Proceedings of the 23rd IAEA Fusion Energy Conference. International Atomic Energy Agency IAEA, 2010. EXS/P3-06.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Non-resonant magnetic braking on JET and TEXTOR

AU - Sun, Y.

AU - Liang, Y.

AU - Koslowski, H.R.

AU - Jachmich, S.

AU - Alfier, A.

AU - Asunta, O.

AU - Corrigan, G.

AU - Delabie, E.

AU - Giroud, C.

AU - Gryaznevich, M.P.

AU - Harting, D.

AU - Hender, T.

AU - Nardon, E.

AU - Naulin, V.

AU - Parail, V.

AU - Tala, Tuomas

AU - Wiegman, C.

AU - Wiesen, S.

AU - Zhang, T.

AU - Shaing, K.C.

AU - JET-EFDA collaborators

PY - 2010

Y1 - 2010

N2 - The non-resonant magnetic braking effect induced by an NonAxisymmetric Magnetic Perturbation (NAMP) is investigated on JET and TEXTOR. The collionality dependence of the torque induced by the n = 1 NAMP field is obtained on JET. The observed torque is located mainly in the plasma core (normalized ρ < 0.4). It increases with decreasing collisionality. The calculation shows that it is close to the transition between the ν − √ν and the superbanana plateau regimes in the plasma core. The NTV torque is modeled by using the smoothly connnected formula in the collisionless regimes. The calculated collisionality dependence shows the same tendency as the experimental observation due to the resonant particle effect. The strongest NTV torque is also located in the plasma core because of the resonant particle effect. However, the magnitudes of the NTV torque is still about 1-2 orders smaller than the observed ones on JET. There is no obvious braking effect with m/n = 6/2 NAMP generated by the Dynamic Ergodic Divertor (DED) on TEXTOR. The calculated NTV torque on TEXTOR is also very small.

AB - The non-resonant magnetic braking effect induced by an NonAxisymmetric Magnetic Perturbation (NAMP) is investigated on JET and TEXTOR. The collionality dependence of the torque induced by the n = 1 NAMP field is obtained on JET. The observed torque is located mainly in the plasma core (normalized ρ < 0.4). It increases with decreasing collisionality. The calculation shows that it is close to the transition between the ν − √ν and the superbanana plateau regimes in the plasma core. The NTV torque is modeled by using the smoothly connnected formula in the collisionless regimes. The calculated collisionality dependence shows the same tendency as the experimental observation due to the resonant particle effect. The strongest NTV torque is also located in the plasma core because of the resonant particle effect. However, the magnitudes of the NTV torque is still about 1-2 orders smaller than the observed ones on JET. There is no obvious braking effect with m/n = 6/2 NAMP generated by the Dynamic Ergodic Divertor (DED) on TEXTOR. The calculated NTV torque on TEXTOR is also very small.

KW - plasma physics

KW - fusion energy

UR - http://www-pub.iaea.org/mtcd/meetings/PDFplus/2010/cn180/cn180_BookOfAbstracts.pdf

M3 - Conference article in proceedings

BT - Proceedings of the 23rd IAEA Fusion Energy Conference

PB - International Atomic Energy Agency IAEA

ER -

Sun Y, Liang Y, Koslowski HR, Jachmich S, Alfier A, Asunta O et al. Non-resonant magnetic braking on JET and TEXTOR. In Proceedings of the 23rd IAEA Fusion Energy Conference. International Atomic Energy Agency IAEA. 2010. EXS/P3-06