Evolution of the Tore Supra data acquisition system: towards the steady state

In operation since 1988, the Tore Supra data acquisition system provides continuous data taking, storage and displays. But several limitations are observed, as the weak errors management, the performances of data transfer and of feedback control. The tied proprietary operating systems and as outcome, the lack of processors evolution prevent from upgrading the original system. So, the data acquisition system has been completely re-engineered aiming long pulse operations. It is based on a commercial package which provides all the basic modules to build a distributed on-line software from the data acquisition level up to the run control and data display. The continuous operation requests a few enhancements we explore in the last part.