Abstract
A method of coaxial helicity injection has successfully produced a closed flux current without the use of the central solenoid in the NSTX device, on a size scale closer to a spherical torus reactor, for a proof-of-principle demonstration of this concept. For the first time, a remarkable 60 times current multiplication factor was achieved. Grad-Shafranov plasma equilibrium reconstructions are used to verify the existence of closed flux current. In some discharges the generated current persists for a surprisingly long time ∼400ms.
Original language | English |
---|---|
Article number | 175002 |
Journal | Physical Review Letters |
Volume | 97 |
Issue number | 17 |
DOIs | |
State | Published - 2006 |