LHCD and ICRF heating experiments in H-mode plasmas on EAST

Journal Article · Wed Feb 12 04:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4864501· OSTI ID:22263897

Zhang, X. J.; Zhao, Y. P.; Wan, B. N.; 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. ^[5]; Magne, R.; Litaudon, X. ^[6]; Kumazawa, R.; Kasahara, H. ^[7]

---

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

An ICRF system with power up to 6.0 MW and a LHCD system up to 4MW have been applied for heating and current drive experiments on EAST. Intensive lithium wall coating was intensively used to reduce particle recycling and Hydrogen concentration in Deuterium plasma, which is needed for effective ICRF and LHCD power absorption in high density plasmas. Significant progress has been made with ICRF heating and LHW current drive for realizing the H-mode plasma operation in EAST. In 2010, H-mode was generated and sustained by LHCD alone, where lithium coating and gas puffing launcher mouth were applied to improve the LHCD power coupling and penetration into the core plasmas at high density of H-modes. During the last two 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, where electrons are predominantly heated by collisions with high energy minority ions. The H-MH mode gave the best plasma performance, and realized H-mode alone in 2012. Combination of ICRF and LHW power injection generated the H-mode plasmas with various ELMy characteristics. The first successful application of the ICRF Heating in the D (He3) plasma was also achieved. The progress on ICRF heating, LHCD experiments and their application in achieving H-mode operation from last two years will be discussed in this report.

• OSTI ID: 22263897
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1580; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
COLLISIONS
DENSITY
DEUTERIUM
H-MODE PLASMA CONFINEMENT
HYDROGEN
ICR HEATING
ION CYCLOTRON-RESONANCE
PLASMA DENSITY