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Title: The targeted heating and current drive applications for the ITER electron cyclotron system

Abstract

We present a 24 MW Electron Cyclotron (EC) system operating at 170 GHz and 3600 s pulse length is to be installed on ITER. The EC plant shall deliver 20 MW of this power to the plasma for Heating and Current Drive (H&CD) applications. The EC system is designed for plasma initiation, central heating, current drive, current profile tailoring, and Magneto-hydrodynamic control (in particular, sawteeth and Neo-classical Tearing Mode) in the flat-top phase of the plasma. A preliminary design review was performed in 2012, which identified a need for extended application of the EC system to the plasma ramp-up, flattop, and ramp down phases of ITER plasma pulse. The various functionalities are prioritized based on those applications, which can be uniquely addressed with the EC system in contrast to other H&CD systems. An initial attempt has been developed at prioritizing the allocated H&CD applications for the three scenarios envisioned: ELMy H-mode (15 MA), Hybrid (~12 MA), and Advanced (~9 MA) scenarios. In conclusion, this leads to the finalization of the design requirements for the EC sub-systems.

Authors:
 [1];  [2];  [1];  [3];  [3];  [2];  [1];  [1];  [4];  [1];  [1];  [5];  [1];  [6]
  1. ITER Organization, Route de Vinon-sur-Verdon (France)
  2. Fusion for Energy, Barcelona (Spain)
  3. Istituto di Fisica del Plasma CNR, Milano (Italy)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). US ITER Project Office
  5. Max Planck Institute of Plasma Physics, Garching (Germany)
  6. Japan Atomic Energy Agency (JAEA), Naka (Japan)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1424487
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 22; Journal Issue: 2; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 42 ENGINEERING

Citation Formats

Henderson, M., Saibene, G., Darbos, C., Farina, D., Figini, L., Gagliardi, M., Gandini, F., Gassmann, T., Hanson, Gregory R., Loarte, A., Omori, T., Poli, E., Purohit, D., and Takahashi, K. The targeted heating and current drive applications for the ITER electron cyclotron system. United States: N. p., 2015. Web. doi:10.1063/1.4908598.
Henderson, M., Saibene, G., Darbos, C., Farina, D., Figini, L., Gagliardi, M., Gandini, F., Gassmann, T., Hanson, Gregory R., Loarte, A., Omori, T., Poli, E., Purohit, D., & Takahashi, K. The targeted heating and current drive applications for the ITER electron cyclotron system. United States. doi:10.1063/1.4908598.
Henderson, M., Saibene, G., Darbos, C., Farina, D., Figini, L., Gagliardi, M., Gandini, F., Gassmann, T., Hanson, Gregory R., Loarte, A., Omori, T., Poli, E., Purohit, D., and Takahashi, K. Fri . "The targeted heating and current drive applications for the ITER electron cyclotron system". United States. doi:10.1063/1.4908598.
@article{osti_1424487,
title = {The targeted heating and current drive applications for the ITER electron cyclotron system},
author = {Henderson, M. and Saibene, G. and Darbos, C. and Farina, D. and Figini, L. and Gagliardi, M. and Gandini, F. and Gassmann, T. and Hanson, Gregory R. and Loarte, A. and Omori, T. and Poli, E. and Purohit, D. and Takahashi, K.},
abstractNote = {We present a 24 MW Electron Cyclotron (EC) system operating at 170 GHz and 3600 s pulse length is to be installed on ITER. The EC plant shall deliver 20 MW of this power to the plasma for Heating and Current Drive (H&CD) applications. The EC system is designed for plasma initiation, central heating, current drive, current profile tailoring, and Magneto-hydrodynamic control (in particular, sawteeth and Neo-classical Tearing Mode) in the flat-top phase of the plasma. A preliminary design review was performed in 2012, which identified a need for extended application of the EC system to the plasma ramp-up, flattop, and ramp down phases of ITER plasma pulse. The various functionalities are prioritized based on those applications, which can be uniquely addressed with the EC system in contrast to other H&CD systems. An initial attempt has been developed at prioritizing the allocated H&CD applications for the three scenarios envisioned: ELMy H-mode (15 MA), Hybrid (~12 MA), and Advanced (~9 MA) scenarios. In conclusion, this leads to the finalization of the design requirements for the EC sub-systems.},
doi = {10.1063/1.4908598},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 2,
volume = 22,
place = {United States},
year = {2015},
month = {2}
}

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Sawtooth control using electron cyclotron current drive in ITER demonstration plasmas in DIII-D
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Poloidally asymmetric plasma response with ECH deposition near q=1 in TCV
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Control of NTMs by ECCD on ASDEX Upgrade in view of ITER application
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journal, July 2012


Critical interface issues associated with the ITER EC system
journal, April 2008


Cross–machine benchmarking for ITER of neoclassical tearing mode stabilization by electron cyclotron current drive
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Potential of the ITER electron cyclotron equatorial launcher for heating and current drive at nominal and reduced fields
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Improved design of an ITER equatorial EC launcher
journal, April 2008


Reliability Test of the 170GHz Gyrotron for ITER
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Physics analysis of the ITER ECW system for optimized performance
journal, April 2008


Overview of the ITER EC upper launcher
journal, April 2008


Progress of the ECRH Upper Launcher design for ITER
journal, October 2014