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. Gondhalekar; 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; Yu Petrov; E. Rachlew; V. Riccardo; E. Righi; F. Rimini; M. Stamp; A. A. Tuccillo; K. 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. Gondhalekar, 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, Yu Petrov, E. Rachlew, V. Riccardo, E. Righi, F. Rimini, M. Stamp, A. A. Tuccillo, K. D. Zastrow, M. Zerbini

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › 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 ³He ion cyclotron resonance layer in D and ⁴He 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 ≈30 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 ³He 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
Pages (from-to)	33-46
Number of pages	14
Journal	Nuclear Fusion
Volume	44
Issue number	1
DOIs	https://doi.org/10.1088/0029-5515/44/1/004
Publication status	Published - Jan 2004

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Mantsinen, M. J., Mayoral, M. L., Van Eester, D., Alper, B., Barnsley, R., Beaumont, P., Bucalossi, J., Coffey, I., Conroy, S., De Baar, M., De Vries, P., Erents, K., Figueiredo, A., Gondhalekar, 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

@article{550f33d80b0640bab517c8daf0ea25e4,

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 3He ion cyclotron resonance layer in D and 4He 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 ≈30 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 3He 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.",

author = "Mantsinen, {M. J.} and Mayoral, {M. L.} and {Van Eester}, D. and B. Alper and R. Barnsley and P. Beaumont and J. Bucalossi and I. Coffey and S. Conroy and {De Baar}, M. and {De Vries}, P. and K. Erents and A. Figueiredo and A. Gondhalekar and C. Gowers and T. Hellsten and E. Joffrin and V. Kiptily and Lamalle, {P. U.} 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 Noterdaeme, {J. M.} and J. Ongena and Yu Petrov and E. Rachlew and V. Riccardo and E. Righi and F. Rimini and M. Stamp and Tuccillo, {A. A.} and Zastrow, {K. D.} and M. Zerbini",

year = "2004",

month = jan,

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

language = "English",

volume = "44",

pages = "33--46",

journal = "Nuclear Fusion",

issn = "0029-5515",

number = "1",

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Mantsinen, MJ, Mayoral, ML, Van Eester, D, Alper, B, Barnsley, R, Beaumont, P, Bucalossi, J, Coffey, I, Conroy, S, De Baar, M, De Vries, P, Erents, K, Figueiredo, A, Gondhalekar, 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, JM, Ongena, J, Petrov, Y, Rachlew, E, Riccardo, V, Righi, E, Rimini, F, Stamp, M, Tuccillo, AA, Zastrow, KD & 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 - Van Eester, D.

AU - Alper, B.

AU - Barnsley, R.

AU - Beaumont, P.

AU - Bucalossi, J.

AU - Coffey, I.

AU - Conroy, S.

AU - De Baar, M.

AU - De Vries, P.

AU - Erents, K.

AU - Figueiredo, A.

AU - Gondhalekar, 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, Yu

AU - Rachlew, E.

AU - Riccardo, V.

AU - Righi, E.

AU - Rimini, F.

AU - Stamp, M.

AU - Tuccillo, A. A.

AU - Zastrow, K. D.

AU - Zerbini, M.

PY - 2004/1

Y1 - 2004/1

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 3He ion cyclotron resonance layer in D and 4He 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 ≈30 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 3He 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 3He ion cyclotron resonance layer in D and 4He 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 ≈30 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 3He 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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U2 - 10.1088/0029-5515/44/1/004

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

M3 - Article

AN - SCOPUS:0742324947

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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