Simulation of peeling-ballooning modes with pellet injection

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4902532· OSTI ID:22403273

Chen, S. Y. ^[1]; Huang, J.; Sun, T. T.; Tang, C. J. ^[1]; Wang, Z. H. ^[2]

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1. College of Physical Science and Technology, Sichuan University, 610064 Chengdu (China)
2. Southwestern Institute of Physics, Chengdu 610041 (China)

The influence of pellet ablation on the evolution of peeling-ballooning (P-B) modes is studied with BOUT++ code. The atoms coming from pellet ablation can significantly reshape the plasma pressure profile, so the behaviors of P-B modes and edge localized mode (ELM) are modified dramatically. This paper shows that the energy loss associated with an ELM increases substantially over that without the pellet, if the pellet is deposited at the top of the pedestal. On the contrary, for pellet deposition in the middle of the pedestal region the ELM energy loss can be less.

• OSTI ID: 22403273
• Journal Information: Physics of Plasmas, Vol. 21, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABLATION
BALLOONING INSTABILITY
DEPOSITION
EDGE LOCALIZED MODES
ENERGY LOSSES
PELLET INJECTION
PELLETS
PLASMA PRESSURE
SIMULATION