Design of the collective Thomson scattering diagnostics for Large Helical Device using a quasi-optical frequency tunable gyrotron as a radiation source

摘要

Collective Thomson scattering technique based on high power laser has already proved its ability in measuring the ion (bulk and fast) temperature (Ti) in fusion plasma devices like tokamaks and stellarators. This paper presents the first trial to implement collective Thomson scattering diagnostic based on quasi-optical gyrotron as a source of radiation. It was found the utilization of this wavelength band gives more flexibility in the diagnostic port arrangement.