Abstract of OPTGS2 Project

The GS2 software will be optimised to make maximum use of HPCFF. GS2 is a time-dependent 5-D gyrokinetic fluid code extensively validated for fusion work and widely used on other HPC facilities for the simulation of plasma turbulence. Inefficiencies identified in a previous study by Belli will be addressed by a programme of work which will deliver improvements both to the discretisation scheme and to the implicit solver. These improvements will mean the code will make better use of the HPC facility, enabling larger calculations both in terms of number of discretisation points and of volume of plasma modelled. These calculations will lead to more accurate and reliable predictions of plasma turbulent behaviour, in particular transport properties, for devices such as JET, MAST and ITER.