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- W790852832 abstract "It is established that plasma rotation can play a role in the advanced scenarios for tokamak equilibria. The rotation and its shear are connected with the creation of transport barriers[1]. Despite the importance of rotation for the advanced tokamak scenarios, the exact way plasma rotation is affecting equilibrium and stability is not well understood. Taking into account the effort towards ITER operation, understanding the effect of plasma rotation to plasma equilibrium and stability is of great importance. In the case of incompressible plasma rotation, the equilibrium is described by a Generalized Grad-Shafranov (GGS) equation and a Bernoulli type one for the pressure [2]. Due to incompressibility these two equations are decoupled and the problem becomes easier to deal with. The GGS equation contains an R4-term related to the electric field. For plasma rotation parallel to the magnetic field the electric field term vanishes and the GGS equation under an integral transformation involving the Afven Mach function becomes identical in form with the static one. HELENA[3] is an equilibrium fixed boundary solver that is integrated on the ITM-TF modeling infrastructure. The code solves the static equilibrium problem for given boundary conditions with various inputs such as P′ and FF ′, where P is the pressure and F the poloidal current functions [4]. Within the framework of the EFDA ITM-TF we have extended HELENA to rotation parallel to the magnetic field. In this case the physical quantities are calculated by means of the aforementioned transformation." @default.
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- W790852832 date "2012-01-01" @default.
- W790852832 modified "2023-09-24" @default.
- W790852832 title "Extending HELENA to equilibria with incompressible parallel plasma rotation" @default.
- W790852832 hasPublicationYear "2012" @default.
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