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Measurements of Mode Converted Ion Cyclotron Wave with Phase Contrast Imaging in Alcator C-Mod and Comparisons with Synthetic PCI Simulations in TORIC

Author(s)
Tsijii, Naoto; Porkolab, Miklos; Edlund, Eric Matthias; Lin, Liang; Lin, Yijun; Wright, John C.; Wukitch, Stephen James; ... Show more Show less
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Abstract
Mode converted ion cyclotron wave (ICW) has been observed with phase contrast imaging (PCI) in D-[superscript 3]He plasmas in Alcator C-Mod [1, 2]. The measurements were carried out with the optical heterodyne technique using acousto-optic modulators which modulate the CO2 laser beam intensity near the ion cyclotron frequency [3]. With recently improved calibration of the PCI system using a calibrated sound wave source, the measurements have been compared with the full-wave code TORIC, as interpreted by a synthetic diagnostic. Because of the line-integrated nature of the PCI signal, the predictions are sensitive to the exact wave field pattern. The simulations are found to be in qualitative agreement with the measurements.
Date issued
2009-11
URI
http://hdl.handle.net/1721.1/66299
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Plasma Science and Fusion Center
Journal
Proceedings of the 18th Topical Conference on Radio Frequency Power in Plasmas
Publisher
American Institute of Physics
Citation
Tsujii, N. et al. “Measurements of Mode Converted Ion Cyclotron Wave with Phase Contrast Imaging in Alcator C-Mod and Comparisons with Synthetic PCI Simulations in TORIC.” AIP Conf. Proc., Vol. 1187, Proceedings of the 18th Topical Conference on Radio Frequency Power in Plasmas, 2009. 65-68. ©2009 American Institute of Physics.
Version: Final published version
ISBN
978-0-7354-0753-4
ISSN
0094-243X

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