Effects of Toroidal Field Ripple on the Loss of Energetic Injected Ions and Toroidal Coil Configuration in a Tokamak Reactor

摘要

The effects of toroidal magnetic field ripple on the energy loss of injected neutral beam ions have been investigated with Monte Carlo orbit-following calculations. For a high and flat density profile the loss of the energetic ions becomes high. It has been found that the loss becomes very high particularly towards the end of the heating phase when the plasma density reaches the value necessary for ignition.In connection with tolerable field ripple the criteria for the choice of the number of TF coils and their size are discussed from the point of the plasma size and the space required for blanket, shield and maintenance. The reference reactor size studied is based on the recommended INTOR guiding parameters.