Time: Thursday, Jan. 13th, 4:00pm
Venue: Room 413, Buil. 11th, YuQuan Campus
Speaker:吴捷
Title: Introduction of High-Speed Camera Diagnostics on ZPED
Abstract: Visible optical diagnostics using high-speed camera has been wildly used on tokamaks, stellarators and linear devices for both qualitive and quantitive study of plasma behavior. It detects emission intensity from excited atoms and ions in the plasma which is positively related to plasma density and temperature. Plasma parameters like fluctuation, velocity and mode number can be calculated from the raw images by a set of image and data processing techniques. The quality of image, hence the accuracy of results, are mainly determined by camera and light path configurations like depth of field(DoF), exposure time, FPS and spatial multiplication.
In this report I will introduce the principle, optical design and parameters of ZPED high-speed camera diagnostics, as well as the data processing techniques developed and applied for the measurement of fluctuation, velocity and mode number. The results are presented and discussed, and compared with both Langmuir probe measurement on ZPED, and high-speed camera measurement installed on other linear device.