| Scholar Name | Someswar Dutta |
| Department | Science and Humanities |
| Reseach Area | Plasma Runaway electron |
| Supervisor Name | Dr. S K Ambavale |
| Title | EFFECT OF EXTERNAL MAGNETIC FIELD PERTURBATIONS ON RUNAWAY ELECTRON DYNAMICS IN TOKAMAK PLASMAS |
| Abstract | In tokamaks, runaway electrons (REs) are a small fraction of plasma electrons that are rapidly accelerated to relativistic speeds by strong electric fields, typically during plasma start-up or disruptions. These high-energy electrons pose a serious threat to the integrity of plasma-facing components, especially in large reactors like ITER and DEMO. The generation of REs is influenced by plasma parameters such as density, temperature, current, and magnetic field strength and configuration. Without proper control, REs can compromise the operational reliability of tokamaks, making their suppression critical for sustained fusion reactor performance. Active magnetic control methods?such as resonant magnetic perturbations (RMP) and local vertical magnetic field (LVF) perturbations?offer promising pathways for RE suppression. Recent experiments in ADITYA have shown that LVF perturbation strength, direction, and coil placement significantly affect RE deconfinement. This research investigates the effectiveness of such external perturbations through numerical modeling to optimize RE mitigation strategies. |