Observation of MHD phenomenon for SST-1 superconducting tokamak

10th Asia Plasma and Fusion Association Conference

Bhandarkar, Manisha^1 ; Dhongde, Jasraj^1 ; Pradhan, Subrata^1

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

382 428, India^1

关键词: Central magnetic field;    Experimental campaign;    Heating system;    Plasma currents;    Plasma duration;    Plasma pulse;    Steady state superconducting tokamak (SST-1);    Superconducting tokamak;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012021/pdf
DOI  :  10.1088/1742-6596/823/1/012021

来源: IOP

【 摘 要 】

Steady State Superconducting Tokamak (SST-1) is a medium size Tokamak (major radius = 1.1 m, minor radius = 0.2 m) and is operational at the Institute for Plasma Research (IPR), India. In the last few experimental campaigns SST-1 has successfully achieved plasma current in order of 60-70kA and plasma duration in excess of ∼ 500 ms at a central magnetic field of 1.5T. An attempt has made to study the behavior of the magneto-hydrodynamic (MHD) activity during different phases of plasma pulse which leads to major/minor disruptions, its present modes (poloidal/toroidal mode number i.e. m = 2, n = 1) impact on plasma confinement and signature of lock mode and its frequency in the SST-1 plasma using experimental data from Mirnov signals. Observed MHD phenomenon has also been correlated with other diagnostics (i.e. ECE, Density, Soft X-Ray etc.) and heating system (ECRH) for the recent campaigns of SST-1.