Time: 2011-06-15 13:00:00
Speaker: Zhenqian Li, Wei Shen [IFTS]
Place: Rm. 413, Bld. 11#, Yuquan Campus
Abstract:
Speaker: Zhenqian Li
Title: Introduction of GTC
Speaker：Wei Shen
Title: Magnetic island induced Alfven eigenmode in tokamak
Abstract: The SAW continuous spectrum can be modified by the interaction with low-frequency MHD fluctuations, such as magnetic islands, since the typical island frequency and growth rate are much lower than the SAW oscillation frequency, we can model the equilibrium magnetic field as the sum of a tokamak axisymmetric part plus a quasi-static helical distortion due to the magnetic island. By using ballooning representation,we got the dispersion relation for e<<1 and the range for continuum spectrum for e~1.
