Details

Autor(en) / Beteiligte

• Wang, H Q
• Xu, G S
• Wan, B N
• Ding, S Y
• Guo, H Y
• Shao, L M
• Liu, S C
• Xu, X Q
• Wang, E
• Yan, N
• Naulin, V
• Nielsen, A H
• Rasmussen, J Juul
• Candy, J
• Bravenec, R
• Sun, Y W
• Shi, T H
• Liang, Y F
• Chen, R
• Zhang, W
• Wang, L
• Chen, L
• Zhao, N
• Li, Y L
• Liu, Y L
• Hu, G H
• Gong, X Z

Titel

New edge coherent mode providing continuous transport in long-pulse H-mode plasmas

Ist Teil von

• Physical review letters, 2014-05, Vol.112 (18), p.185004-185004

Ort / Verlag

United States

Erscheinungsjahr

2014

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• An electrostatic coherent mode near the electron diamagnetic frequency (20-90 kHz) is observed in the steep-gradient pedestal region of long pulse H-mode plasmas in the Experimental Advanced Superconducting Tokamak, using a newly developed dual gas-puff-imaging system and diamond-coated reciprocating probes. The mode propagates in the electron diamagnetic direction in the plasma frame with poloidal wavelength of ∼8  cm. The mode drives a significant outflow of particles and heat as measured directly with the probes, thus greatly facilitating long pulse H-mode sustainment. This mode shows the nature of dissipative trapped electron mode, as evidenced by gyrokinetic turbulence simulations.