The current profile control by alternating current (ac) magnetic helicity injection in a reversed field pinch (RFP) was analyzed. The oscillating field current drive (OFCD), which is a form of ac magnetic helicity injection, was used in the study that employed 3-d resistive magnetohydrodynamic (MHD) computation. It was observed that OFCD could control the current density profile in an oscillatory steady-state, leading to a significant reduction in magnetic fluctuations. The OFCD current profile control was also found to inject magnetic helicity over a cycle and sustained a portion of the total plasma current.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics