Laser multipass probing in Thomson plasma diagnostics
M. Yu. KantorA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. PetersburgD. V. KuprienkoA. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, St. Petersburg
ABI
Abstract
A new approach to a system of laser probing for Thomson diagnostics of a high-temperature plasma is proposed. The approach is based on the principles of multipass intracavity laser probing, which can improve the sensitivity of the method by between one and two orders of magnitude and allows the electron temperature to be measured at frequencies higher than 10 kHz. Results of testing a probing system developed for the FT-2 tokamak are presented.