The progress in development of edge tangential Thomson scattering system on HL-2A tokamak

The edge tangential Thomsonscattering system (ETTSS) was developed for the first time on a HL-2Atokamak. A Nd:YAG laser with a 1064 nm wavelength, 4 J energy, and 30 Hz repetition rate is employed on the ETTSS. Thelaser beam injects the plasma in the tangential direction on the mid-plane of the machine, and the angles between the laser injection direction and thescattered light collection direction are in the range from 157.5 ° to 162.8°. Thescattered light collectionoptics with 0.21-0.47 magnification is utilized to collect thescattered light ofmeasurement range from R = 1900 mm to 2100 mm (the normalized radius is from r/a = 0.625 to 1.125).Spatial resolution of the preliminary design could be up to Δr/a = 0.016. Themeasurement requirements could be achieved: 10 eV

Source: Review of Scientific Instruments - October 4, 2016 Category: Physics Authors: C. H. Liu, Y. Huang, Y. Q. Wang, Z. Feng, Z. P. Hou and B. Z. Fu Source Type: research