Heating, current drive and energetic particle studies on JET in preparation of ITER operation

J.-M. Noterdaeme, R. Budny, A. Cardinali, J. Heikkinen, M. Mantsinen, JET-EFDA Contributors, et al.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic 4He heating, beam injected 4He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with 4He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.
Original languageEnglish
Pages (from-to)202-209
Number of pages8
JournalNuclear Fusion
Volume43
DOIs
Publication statusPublished - 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

energetic particles
preparation
heating
shear
pulse heating
refueling
profiles
alpha particles
hollow
ions
momentum
harmonics
physics
energy

Keywords

  • JET
  • plasma
  • Tokamak
  • fusion energy
  • fusion reactors
  • ITER
  • internal transport barriers

Cite this

Noterdaeme, J-M., Budny, R., Cardinali, A., Heikkinen, J., Mantsinen, M., JET-EFDA Contributors, & et al. (2003). Heating, current drive and energetic particle studies on JET in preparation of ITER operation. Nuclear Fusion, 43, 202-209. https://doi.org/10.1088/0029-5515/43/3/306
Noterdaeme, J.-M. ; Budny, R. ; Cardinali, A. ; Heikkinen, J. ; Mantsinen, M. ; JET-EFDA Contributors ; et al. / Heating, current drive and energetic particle studies on JET in preparation of ITER operation. In: Nuclear Fusion. 2003 ; Vol. 43. pp. 202-209.
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abstract = "This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic 4He heating, beam injected 4He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with 4He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.",
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Noterdaeme, J-M, Budny, R, Cardinali, A, Heikkinen, J, Mantsinen, M, JET-EFDA Contributors & et al. 2003, 'Heating, current drive and energetic particle studies on JET in preparation of ITER operation', Nuclear Fusion, vol. 43, pp. 202-209. https://doi.org/10.1088/0029-5515/43/3/306

Heating, current drive and energetic particle studies on JET in preparation of ITER operation. / Noterdaeme, J.-M.; Budny, R. ; Cardinali, A.; Heikkinen, J. ; Mantsinen, M.; JET-EFDA Contributors; et al.

In: Nuclear Fusion, Vol. 43, 2003, p. 202-209.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Noterdaeme, J.-M.

AU - Budny, R.

AU - Cardinali, A.

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N2 - This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic 4He heating, beam injected 4He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with 4He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.

AB - This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD4) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic 4He heating, beam injected 4He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with 4He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.

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KW - internal transport barriers

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DO - 10.1088/0029-5515/43/3/306

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JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

ER -

Noterdaeme J-M, Budny R, Cardinali A, Heikkinen J, Mantsinen M, JET-EFDA Contributors et al. Heating, current drive and energetic particle studies on JET in preparation of ITER operation. Nuclear Fusion. 2003;43:202-209. https://doi.org/10.1088/0029-5515/43/3/306