Measurement of the energy balance in ATC tokamak

Gross properties of the energy balance in the ATC tokamak have been investigated. During the quasi-steady state phase of a normal discharge, the major part of the energy loss vas found to be to the limiters. Radiation and charge-exchange play minor roles during this quasi-steady state phase, but are nevertheless the dominant loss mechanisms at the termination of a discharge and account for a substantial portion of the stored poloidal magnetic energy associated with the plasma current.