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Title: Supersonic molecular beam injection effects on tokamak plasma applied non-axisymmetric magnetic perturbation

Abstract

The change of tokamak plasma behavior by supersonic molecular beam injection (SMBI) was investigated by applying a three-dimensional magnetic perturbation that could suppress edge localized modes (ELMs). From the time trace of decreasing electron temperature and with increasing plasma density keeping the total confined energy constant, the SMBI seems to act as a cold pulse on the plasma. However, the ELM behaviors were changed drastically (i.e., the symptom of ELM suppression has disappeared). The plasma collisionality in the edge-pedestal region could play a role in the change of the ELM behaviors.

Authors:
; ; ; ; ; ;  [1];  [2]
  1. National Fusion Research Institute, Daejeon 34133 (Korea, Republic of)
  2. Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22599893
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AXIAL SYMMETRY; BEAM INJECTION; DISTURBANCES; EDGE LOCALIZED MODES; ELECTRON TEMPERATURE; MOLECULAR BEAMS; PERTURBATION THEORY; PLASMA DENSITY; PULSES; THREE-DIMENSIONAL CALCULATIONS; TOKAMAK DEVICES

Citation Formats

Han, Hyunsun, E-mail: hyunsun@nfri.re.kr, In, Y., Jeon, Y. M., Hahn, S. H., Lee, K. D., Nam, Y. U., Yoon, S. W., and Lee, H. Y.. Supersonic molecular beam injection effects on tokamak plasma applied non-axisymmetric magnetic perturbation. United States: N. p., 2016. Web. doi:10.1063/1.4961433.
Han, Hyunsun, E-mail: hyunsun@nfri.re.kr, In, Y., Jeon, Y. M., Hahn, S. H., Lee, K. D., Nam, Y. U., Yoon, S. W., & Lee, H. Y.. Supersonic molecular beam injection effects on tokamak plasma applied non-axisymmetric magnetic perturbation. United States. doi:10.1063/1.4961433.
Han, Hyunsun, E-mail: hyunsun@nfri.re.kr, In, Y., Jeon, Y. M., Hahn, S. H., Lee, K. D., Nam, Y. U., Yoon, S. W., and Lee, H. Y.. Mon . "Supersonic molecular beam injection effects on tokamak plasma applied non-axisymmetric magnetic perturbation". United States. doi:10.1063/1.4961433.
@article{osti_22599893,
title = {Supersonic molecular beam injection effects on tokamak plasma applied non-axisymmetric magnetic perturbation},
author = {Han, Hyunsun, E-mail: hyunsun@nfri.re.kr and In, Y. and Jeon, Y. M. and Hahn, S. H. and Lee, K. D. and Nam, Y. U. and Yoon, S. W. and Lee, H. Y.},
abstractNote = {The change of tokamak plasma behavior by supersonic molecular beam injection (SMBI) was investigated by applying a three-dimensional magnetic perturbation that could suppress edge localized modes (ELMs). From the time trace of decreasing electron temperature and with increasing plasma density keeping the total confined energy constant, the SMBI seems to act as a cold pulse on the plasma. However, the ELM behaviors were changed drastically (i.e., the symptom of ELM suppression has disappeared). The plasma collisionality in the edge-pedestal region could play a role in the change of the ELM behaviors.},
doi = {10.1063/1.4961433},
journal = {Physics of Plasmas},
number = 8,
volume = 23,
place = {United States},
year = {Mon Aug 15 00:00:00 EDT 2016},
month = {Mon Aug 15 00:00:00 EDT 2016}
}