Localized bulk electron heating with ICRF mode conversion in the JET tokamak

M.J. Mantsinen; M.-L. Mayoral; D. Van Eester; B. Alper; R. Barnsley; P. Beaumont; J. Bucalossi; I. Coffey; S. Conroy; M. de Baar; P. de Vries; K. Erents; A. Figueiredo; A. Bondhalekar; C. Gowers; T. Hellsten; E. Joffrin; V. Kiptily; P.U. Lamalle; K. Lawson; A. Lyssoivan; J. Mailloux; P. Mantica; F. Meo; F. Milani; I. Monakhov; A. Murari; F. Nguyen; J.-M. Noterdaeme; J. Ongena; Y. Petrov; E. Rachlew; V. Riccardo; E. Righi; F. Rimini; M. Stamp; A.A. Tuccillo; D.-D. Zastrow; M. Zerbini

doi:10.1088/0029-5515/44/1/004

Localized bulk electron heating with ICRF mode conversion in the JET tokamak

M.J. Mantsinen, M.-L. Mayoral, D. Van Eester, B. Alper, R. Barnsley, P. Beaumont, J. Bucalossi, I. Coffey, S. Conroy, M. de Baar, P. de Vries, K. Erents, A. Figueiredo, A. Bondhalekar, C. Gowers, T. Hellsten, E. Joffrin, V. Kiptily, P.U. Lamalle, K. LawsonA. Lyssoivan, J. Mailloux, P. Mantica, F. Meo, F. Milani, I. Monakhov, A. Murari, F. Nguyen, J.-M. Noterdaeme, J. Ongena, Y. Petrov, E. Rachlew, V. Riccardo, E. Righi, F. Rimini, M. Stamp, A.A. Tuccillo, D.-D. Zastrow, M. Zerbini

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Ion cyclotron resonance frequencies (ICRF) mode conversion has been developed for localized on-axis and off-axis bulk electron heating on the JET tokamak. The fast magnetosonic waves launched from the low-field side ICRF antennas are mode-converted to short-wavelength waves on the high-field side of the He-3 ion cyclotron resonance layer in D and He-4 plasmas and subsequently damped on the bulk electrons. The resulting electron power deposition, measured using ICRF power modulation, is narrow with a typical full-width at half-maximum of approximate to30 cm (i.e. about 30% of the minor radius) and the total deposited power to electrons comprises at least up to 80% of the applied ICRF power. The ICRF mode conversion power deposition has been kept constant using He-3 bleed throughout the ICRF phase with a typical duration of 4-6 s, i.e. 15-40 energy confinement times. Using waves propagating in the counter-current direction minimizes competing ion damping in the presence of co-injected deuterium beam ions.

Original language	English
Journal	Nuclear Fusion
Volume	44
Issue number	1
Pages (from-to)	33-46
ISSN	0029-5515
DOIs	https://doi.org/10.1088/0029-5515/44/1/004
Publication status	Published - 2004

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Mantsinen, M. J., Mayoral, M.-L., Eester, D. V., Alper, B., Barnsley, R., Beaumont, P., Bucalossi, J., Coffey, I., Conroy, S., Baar, M. D., Vries, P. D., Erents, K., Figueiredo, A., Bondhalekar, A., Gowers, C., Hellsten, T., Joffrin, E., Kiptily, V., Lamalle, P. U., ... Zerbini, M. (2004). Localized bulk electron heating with ICRF mode conversion in the JET tokamak. Nuclear Fusion, 44(1), 33-46. https://doi.org/10.1088/0029-5515/44/1/004

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title = "Localized bulk electron heating with ICRF mode conversion in the JET tokamak",

abstract = "Ion cyclotron resonance frequencies (ICRF) mode conversion has been developed for localized on-axis and off-axis bulk electron heating on the JET tokamak. The fast magnetosonic waves launched from the low-field side ICRF antennas are mode-converted to short-wavelength waves on the high-field side of the He-3 ion cyclotron resonance layer in D and He-4 plasmas and subsequently damped on the bulk electrons. The resulting electron power deposition, measured using ICRF power modulation, is narrow with a typical full-width at half-maximum of approximate to30 cm (i.e. about 30% of the minor radius) and the total deposited power to electrons comprises at least up to 80% of the applied ICRF power. The ICRF mode conversion power deposition has been kept constant using He-3 bleed throughout the ICRF phase with a typical duration of 4-6 s, i.e. 15-40 energy confinement times. Using waves propagating in the counter-current direction minimizes competing ion damping in the presence of co-injected deuterium beam ions. ",

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author = "M.J. Mantsinen and M.-L. Mayoral and Eester, {D. Van} and B. Alper and R. Barnsley and P. Beaumont and J. Bucalossi and I. Coffey and S. Conroy and Baar, {M. de} and Vries, {P. de} and K. Erents and A. Figueiredo and A. Bondhalekar and C. Gowers and T. Hellsten and E. Joffrin and V. Kiptily and P.U. Lamalle and K. Lawson and A. Lyssoivan and J. Mailloux and P. Mantica and F. Meo and F. Milani and I. Monakhov and A. Murari and F. Nguyen and J.-M. Noterdaeme and J. Ongena and Y. Petrov and E. Rachlew and V. Riccardo and E. Righi and F. Rimini and M. Stamp and A.A. Tuccillo and D.-D. Zastrow and M. Zerbini",

year = "2004",

doi = "10.1088/0029-5515/44/1/004",

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Mantsinen, MJ, Mayoral, M-L, Eester, DV, Alper, B, Barnsley, R, Beaumont, P, Bucalossi, J, Coffey, I, Conroy, S, Baar, MD, Vries, PD, Erents, K, Figueiredo, A, Bondhalekar, A, Gowers, C, Hellsten, T, Joffrin, E, Kiptily, V, Lamalle, PU, Lawson, K, Lyssoivan, A, Mailloux, J, Mantica, P, Meo, F, Milani, F, Monakhov, I, Murari, A, Nguyen, F, Noterdaeme, J-M, Ongena, J, Petrov, Y, Rachlew, E, Riccardo, V, Righi, E, Rimini, F, Stamp, M, Tuccillo, AA, Zastrow, D-D & Zerbini, M 2004, 'Localized bulk electron heating with ICRF mode conversion in the JET tokamak', Nuclear Fusion, vol. 44, no. 1, pp. 33-46. https://doi.org/10.1088/0029-5515/44/1/004

TY - JOUR

T1 - Localized bulk electron heating with ICRF mode conversion in the JET tokamak

AU - Mantsinen, M.J.

AU - Mayoral, M.-L.

AU - Eester, D. Van

AU - Alper, B.

AU - Barnsley, R.

AU - Beaumont, P.

AU - Bucalossi, J.

AU - Coffey, I.

AU - Conroy, S.

AU - Baar, M. de

AU - Vries, P. de

AU - Erents, K.

AU - Figueiredo, A.

AU - Bondhalekar, A.

AU - Gowers, C.

AU - Hellsten, T.

AU - Joffrin, E.

AU - Kiptily, V.

AU - Lamalle, P.U.

AU - Lawson, K.

AU - Lyssoivan, A.

AU - Mailloux, J.

AU - Mantica, P.

AU - Meo, F.

AU - Milani, F.

AU - Monakhov, I.

AU - Murari, A.

AU - Nguyen, F.

AU - Noterdaeme, J.-M.

AU - Ongena, J.

AU - Petrov, Y.

AU - Rachlew, E.

AU - Riccardo, V.

AU - Righi, E.

AU - Rimini, F.

AU - Stamp, M.

AU - Tuccillo, A.A.

AU - Zastrow, D.-D.

AU - Zerbini, M.

PY - 2004

Y1 - 2004

N2 - Ion cyclotron resonance frequencies (ICRF) mode conversion has been developed for localized on-axis and off-axis bulk electron heating on the JET tokamak. The fast magnetosonic waves launched from the low-field side ICRF antennas are mode-converted to short-wavelength waves on the high-field side of the He-3 ion cyclotron resonance layer in D and He-4 plasmas and subsequently damped on the bulk electrons. The resulting electron power deposition, measured using ICRF power modulation, is narrow with a typical full-width at half-maximum of approximate to30 cm (i.e. about 30% of the minor radius) and the total deposited power to electrons comprises at least up to 80% of the applied ICRF power. The ICRF mode conversion power deposition has been kept constant using He-3 bleed throughout the ICRF phase with a typical duration of 4-6 s, i.e. 15-40 energy confinement times. Using waves propagating in the counter-current direction minimizes competing ion damping in the presence of co-injected deuterium beam ions.

AB - Ion cyclotron resonance frequencies (ICRF) mode conversion has been developed for localized on-axis and off-axis bulk electron heating on the JET tokamak. The fast magnetosonic waves launched from the low-field side ICRF antennas are mode-converted to short-wavelength waves on the high-field side of the He-3 ion cyclotron resonance layer in D and He-4 plasmas and subsequently damped on the bulk electrons. The resulting electron power deposition, measured using ICRF power modulation, is narrow with a typical full-width at half-maximum of approximate to30 cm (i.e. about 30% of the minor radius) and the total deposited power to electrons comprises at least up to 80% of the applied ICRF power. The ICRF mode conversion power deposition has been kept constant using He-3 bleed throughout the ICRF phase with a typical duration of 4-6 s, i.e. 15-40 energy confinement times. Using waves propagating in the counter-current direction minimizes competing ion damping in the presence of co-injected deuterium beam ions.

KW - 2-E tekno

U2 - 10.1088/0029-5515/44/1/004

DO - 10.1088/0029-5515/44/1/004

M3 - Journal article

SN - 0029-5515

VL - 44

SP - 33

EP - 46

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 1

ER -

Localized bulk electron heating with ICRF mode conversion in the JET tokamak

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