Lower hybrid current drive and ion cyclotron range of frequencies heating experiments in H-mode plasmas in Experimental Advanced Superconducting Tokomak

Journal Article · Sun Jun 15 04:00:00 EDT 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4884356· OSTI ID:22299944

Zhang, X. J.; Zhao, Y. P.; Ding, B. J.; Xu, G. S.; Gong, X. Z.; Li, J. G. ^[1]; Lin, Y.; Wukitch, S. ^[2]; Taylor, G. ^[3]; Noterdaeme, J. M. ^[4]; Braun, F. ^[4]; Magne, R.; Litaudon, X. ^[5]; Kumazawa, R.; Kasahara, H. ^[6]

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1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China)
2. MIT Plasma Science and Fusion Center, Cambridge, Massachusetts 02139 (United States)
3. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)
4. Max-Planck Institute for Plasma Physics, D-85748 Garching (Germany)
5. CEA, IRFM, F-13108 Saint-Paul Lez Durance (France)
6. National Institute for Fusion Science, Toki (Japan)

An ion cyclotron range of frequencies (ICRF) system with power up to 6.0 MW and a lower hybrid current drive (LHCD) system up to 4 MW have been applied for heating and current drive experiments in Experimental Advanced Superconducting Tokomak (EAST). Significant progress has been made with ICRF heating and LHCD for realizing the H-mode plasma operation in EAST. During 2010 and 2012 experimental campaigns, ICRF heating experiments were carried out at the fixed frequency of 27MHz, achieving effective ions and electrons heating with the H minority heating (H-MH) mode. The H-MH mode produced good plasma performance, and realized H-mode using ICRF power alone in 2012. In 2010, H-modes were generated and sustained by LHCD alone, where lithium coating and gas puffing near the mouth of the LH launcher were applied to improve the LHCD power coupling and penetration into the core plasmas of H-modes. In 2012, the combination of LHCD and ICRH power extended the H-mode duration up to over 30 s. H-modes with various types of edge localized modes (ELMs) have been achieved with H{sub IPB98}(y, 2) ranging from 0.7 to over unity. A brief overview of LHCD and ICRF Heating experiment and their application in achieving H-mode operation during these two campaigns will be presented.

• OSTI ID: 22299944
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 21; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
EDGE LOCALIZED MODES
H-MODE PLASMA CONFINEMENT
ICR HEATING
ION CYCLOTRON-RESONANCE
LITHIUM
LOWER HYBRID CURRENT DRIVE
PLASMA