Simulating thermal loadings on electrodes of ion-optical systems of a stationary ion source

Calculation and experimental study of forced cooling of electrode connectors of the ion-optic system (IOS) of powerful stationary ion sources intended for injectors of thermo-nuclear devices, is carried out. Hydraulic characteristics of profiled electrode connectors are measured and heat stressed regimes of their operation by heating with the electric current are modelled. Calculations and experiments show that IOS connectors of the configuration described remain operable at uniform density currents of up to 600 Wt/cm2. Water velocity in tubes should be 23.5 m/s which corresponds to tube pressure difference of 9.2x105 Pa. It is shown experimentally that the design of water feeding pipes to connector collectors significantly affects pressure losses in IOS electrodes. The decrease in the amount of abrupt rotations in the feeding pipe design decreases these losses considerably