Modeling of neoclassical tearing mode stabilization by electron cyclotron heating and current drive in tokamak plasmas

K. Kim, Y.S. Na, H.S. Kim, M. Maraschek, E. Poli, J. Stober, H. Zohm, F. Felici, O. Sauter, Y.S. Park, L. Terzolo

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

An integrated numerical system is established to model time-dependent behavior of the neoclassical tearing mode (NTM) in a tokamak which solves the modified Rutherford equation (MRE) by coupling with plasma transport, equilibrium, heating and current drive. The MRE is formulated in a simple form to be well-suited for time-dependent simulations including a predictive purpose for the feedback controller design by coupling the electron cyclotron effect self-consistently. In particular the electron cyclotron heating (ECH) effect is newly included to the MRE in addition to the electron cyclotron current drive (ECCD) effect to investigate their impact to stabilize the NTM. The integrated numerical system is applied to experiments for benchmarking in which NTMs are stabilized by ECCD and by ECH at ASDEX Upgrade and TCV, respectively. The impact of ECCD and ECH on stabilizing NTMs is identified in the simulations.
Original languageEnglish
Pages (from-to)867-875
Number of pages9
JournalCurrent Applied Physics
Volume16
Issue number8
DOIs
Publication statusPublished - 1 Aug 2016

Fingerprint

electron cyclotron heating
Cyclotrons
cyclotrons
Stabilization
stabilization
Plasmas
Heating
Electrons
electrons
controllers
simulation
Benchmarking
heating
Feedback
Controllers

Keywords

  • ECH/CD
  • Modified Rutherford equation
  • Neoclassical tearing mode
  • Time-dependent simulation
  • Tokamak

Cite this

Kim, K. ; Na, Y.S. ; Kim, H.S. ; Maraschek, M. ; Poli, E. ; Stober, J. ; Zohm, H. ; Felici, F. ; Sauter, O. ; Park, Y.S. ; Terzolo, L. / Modeling of neoclassical tearing mode stabilization by electron cyclotron heating and current drive in tokamak plasmas. In: Current Applied Physics. 2016 ; Vol. 16, No. 8. pp. 867-875.
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abstract = "An integrated numerical system is established to model time-dependent behavior of the neoclassical tearing mode (NTM) in a tokamak which solves the modified Rutherford equation (MRE) by coupling with plasma transport, equilibrium, heating and current drive. The MRE is formulated in a simple form to be well-suited for time-dependent simulations including a predictive purpose for the feedback controller design by coupling the electron cyclotron effect self-consistently. In particular the electron cyclotron heating (ECH) effect is newly included to the MRE in addition to the electron cyclotron current drive (ECCD) effect to investigate their impact to stabilize the NTM. The integrated numerical system is applied to experiments for benchmarking in which NTMs are stabilized by ECCD and by ECH at ASDEX Upgrade and TCV, respectively. The impact of ECCD and ECH on stabilizing NTMs is identified in the simulations.",
keywords = "ECH/CD, Modified Rutherford equation, Neoclassical tearing mode, Time-dependent simulation, Tokamak",
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Kim, K, Na, YS, Kim, HS, Maraschek, M, Poli, E, Stober, J, Zohm, H, Felici, F, Sauter, O, Park, YS & Terzolo, L 2016, 'Modeling of neoclassical tearing mode stabilization by electron cyclotron heating and current drive in tokamak plasmas', Current Applied Physics, vol. 16, no. 8, pp. 867-875. https://doi.org/10.1016/j.cap.2016.04.015

Modeling of neoclassical tearing mode stabilization by electron cyclotron heating and current drive in tokamak plasmas. / Kim, K.; Na, Y.S.; Kim, H.S.; Maraschek, M.; Poli, E.; Stober, J.; Zohm, H.; Felici, F.; Sauter, O.; Park, Y.S.; Terzolo, L.

In: Current Applied Physics, Vol. 16, No. 8, 01.08.2016, p. 867-875.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Modeling of neoclassical tearing mode stabilization by electron cyclotron heating and current drive in tokamak plasmas

AU - Kim, K.

AU - Na, Y.S.

AU - Kim, H.S.

AU - Maraschek, M.

AU - Poli, E.

AU - Stober, J.

AU - Zohm, H.

AU - Felici, F.

AU - Sauter, O.

AU - Park, Y.S.

AU - Terzolo, L.

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N2 - An integrated numerical system is established to model time-dependent behavior of the neoclassical tearing mode (NTM) in a tokamak which solves the modified Rutherford equation (MRE) by coupling with plasma transport, equilibrium, heating and current drive. The MRE is formulated in a simple form to be well-suited for time-dependent simulations including a predictive purpose for the feedback controller design by coupling the electron cyclotron effect self-consistently. In particular the electron cyclotron heating (ECH) effect is newly included to the MRE in addition to the electron cyclotron current drive (ECCD) effect to investigate their impact to stabilize the NTM. The integrated numerical system is applied to experiments for benchmarking in which NTMs are stabilized by ECCD and by ECH at ASDEX Upgrade and TCV, respectively. The impact of ECCD and ECH on stabilizing NTMs is identified in the simulations.

AB - An integrated numerical system is established to model time-dependent behavior of the neoclassical tearing mode (NTM) in a tokamak which solves the modified Rutherford equation (MRE) by coupling with plasma transport, equilibrium, heating and current drive. The MRE is formulated in a simple form to be well-suited for time-dependent simulations including a predictive purpose for the feedback controller design by coupling the electron cyclotron effect self-consistently. In particular the electron cyclotron heating (ECH) effect is newly included to the MRE in addition to the electron cyclotron current drive (ECCD) effect to investigate their impact to stabilize the NTM. The integrated numerical system is applied to experiments for benchmarking in which NTMs are stabilized by ECCD and by ECH at ASDEX Upgrade and TCV, respectively. The impact of ECCD and ECH on stabilizing NTMs is identified in the simulations.

KW - ECH/CD

KW - Modified Rutherford equation

KW - Neoclassical tearing mode

KW - Time-dependent simulation

KW - Tokamak

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DO - 10.1016/j.cap.2016.04.015

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SP - 867

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JO - Current Applied Physics

JF - Current Applied Physics

SN - 1567-1739

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