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Title: EC power management in ITER for NTM control: the path from the commissioning phase to demonstration discharges

Abstract

Time dependent simulations that evolve consistently the magnetic equilibrium and plasma pressure profiles and the width and frequency rotation of magnetic islands under the effect of the Electron Cyclotron feedback system are used to assess whether the control of NTMs on ITER is compatible with other simulataneous functionalities of the EC system, like core heating and current profile tailoring, or sawtooth control. Furthermore, results indicate that the power needs for control can be reduced if the EC power is reserved and if pre-emptive control is used as opposed to an active search for an already developed island.

Authors:
 [1];  [1];  [2];  [1];  [3];  [3];  [4]
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. ITER Organization, St. Paul Les Durance (France)
  3. Istituto di Fisica del Plasma, Milano (Italy)
  4. Max-Planck-Institute fur Plasmaphysiks, Garching (Germany)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1411213
Grant/Contract Number:  
[AC02-09CH11466]
Resource Type:
Accepted Manuscript
Journal Name:
EPJ Web of Conferences
Additional Journal Information:
[ Journal Volume: 157; Conference: Radio Frequency Power in Plasmas, Aix-en Provence (France), 30 May - 2 Jun 2017]; Journal ID: ISSN 2100-014X
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Poli, Francesca M., Fredrickson, Eric, Henderson, Mark A., Bertelli, Nicola, Farina, Daniela, Figini, Lorenzo, and Poli, Emanuele. EC power management in ITER for NTM control: the path from the commissioning phase to demonstration discharges. United States: N. p., 2017. Web. doi:10.1051/epjconf/201715703041.
Poli, Francesca M., Fredrickson, Eric, Henderson, Mark A., Bertelli, Nicola, Farina, Daniela, Figini, Lorenzo, & Poli, Emanuele. EC power management in ITER for NTM control: the path from the commissioning phase to demonstration discharges. United States. doi:10.1051/epjconf/201715703041.
Poli, Francesca M., Fredrickson, Eric, Henderson, Mark A., Bertelli, Nicola, Farina, Daniela, Figini, Lorenzo, and Poli, Emanuele. Mon . "EC power management in ITER for NTM control: the path from the commissioning phase to demonstration discharges". United States. doi:10.1051/epjconf/201715703041. https://www.osti.gov/servlets/purl/1411213.
@article{osti_1411213,
title = {EC power management in ITER for NTM control: the path from the commissioning phase to demonstration discharges},
author = {Poli, Francesca M. and Fredrickson, Eric and Henderson, Mark A. and Bertelli, Nicola and Farina, Daniela and Figini, Lorenzo and Poli, Emanuele},
abstractNote = {Time dependent simulations that evolve consistently the magnetic equilibrium and plasma pressure profiles and the width and frequency rotation of magnetic islands under the effect of the Electron Cyclotron feedback system are used to assess whether the control of NTMs on ITER is compatible with other simulataneous functionalities of the EC system, like core heating and current profile tailoring, or sawtooth control. Furthermore, results indicate that the power needs for control can be reduced if the EC power is reserved and if pre-emptive control is used as opposed to an active search for an already developed island.},
doi = {10.1051/epjconf/201715703041},
journal = {EPJ Web of Conferences},
number = ,
volume = [157],
place = {United States},
year = {2017},
month = {10}
}

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Works referenced in this record:

Nonlinear evolution of double tearing modes in tokamaks
journal, January 2000

  • Fredrickson, E.; Bell, M.; Budny, R. V.
  • Physics of Plasmas, Vol. 7, Issue 10
  • DOI: 10.1063/1.1289893

Optimization of the ITER electron cyclotron equatorial launcher for improved heating and current drive functional capabilities
journal, June 2014

  • Farina, D.; Henderson, M.; Figini, L.
  • Physics of Plasmas, Vol. 21, Issue 6
  • DOI: 10.1063/1.4884352

Requirements on localized current drive for the suppression of neoclassical tearing modes
journal, August 2011


Integrated modelling of island growth, stabilization and mode locking: consequences for NTM control on ITER
journal, August 2012

  • van den Brand, H.; de Baar, M. R.; Cardozo, N. J. Lopes
  • Plasma Physics and Controlled Fusion, Vol. 54, Issue 9
  • DOI: 10.1088/0741-3335/54/9/094003

Potential of the ITER electron cyclotron equatorial launcher for heating and current drive at nominal and reduced fields
journal, February 2012


TORBEAM, a beam tracing code for electron-cyclotron waves in tokamak plasmas
journal, May 2001


Neoclassical tearing modes in Tokamak Fusion Test Reactor experiments. I. Measurements of magnetic islands and Δ
journal, April 1998

  • Chang, Z.; Fredrickson, E. D.; Batha, S. H.
  • Physics of Plasmas, Vol. 5, Issue 4
  • DOI: 10.1063/1.872627

Requirements for alignment of electron cyclotron current drive for neoclassical tearing mode stabilization in ITER
journal, April 2008


Evaluating neoclassical tearing mode detection with ECE for control on ITER
journal, December 2012


The targeted heating and current drive applications for the ITER electron cyclotron system
journal, February 2015

  • Henderson, M.; Saibene, G.; Darbos, C.
  • Physics of Plasmas, Vol. 22, Issue 2
  • DOI: 10.1063/1.4908598

Actuator and diagnostic requirements of the ITER Plasma Control System
journal, December 2012