An extensive analysis of the global energy balance on the ASDEX Upgrade (AUG) tokamak has been performed. For such a purpose a complete revamping of the AUG cooling water calorimetry originally described in (Richter and Vernickel 1994 Rev. Sci. Instrum.65 5) has been done. The system, which has been largely improved, consists of 88 cooling units, which provides an almost perfect toroidal and poloidal coverage of the in-vessel components of the AUG tokamak. To measure the energy loss due to radiation, which is only partially captured by the cooling water calorimetry, a novel framework is introduced to calculate the losses utilizing bolometric data. The analysis of the global energy balance based on almost 600 discharges reveal the remarkable capability to account more than 95% of the total injected energy on average.
Isotope effects on energy transport in the core of ASDEX-Upgrade tokamak plasmas: Turbulence measurements and model validation