Observation of plasma shift in SST-1 using optical imaging diagnostics

10th Asia Plasma and Fusion Association Conference

Kumar, Manoj^1 ; Parmar, Chesta^1 ; Chaudhary, Vishnu^1 ; Kumar, Ajai^1

Institute for Plasma Research, Near Indira Bridge, Bhat, Gandhinagar

382 428, India^1

关键词: Experimental campaign;    Fully automated;    Gigabit Ethernet;    Imaging data;    Operation point;    Optical imaging;    Optical imaging system;    Plasma positions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012056/pdf
DOI  :  10.1088/1742-6596/823/1/012056

来源: IOP

【 摘 要 】

A tangential viewing optical imaging system at SST-1 is used to observe the plasma shift both vertical and horizontal during experimental campaigns. The images from the plasma are transferred through optical imaging fiber and coupled to a CCD camera which operates at 31 frames/s. The data from the CCD camera is transferred through gigabit Ethernet cable to acquisition PC placed in diagnostics lab. The whole system is fully automated for operation and data acquisition of the imaging data. The complete imaging system will be explained in this presentation. With this optical imaging system, the shift in plasma position both in vertical and horizontal direction is observed. The plasma shape and diameter can also be estimated with this system. The estimated diameter during some of the plasma shots is ∼ 50 cm and shape is circular. The data from this diagnostics is very useful from the operation point of view of the machine.