The effects of poloidal and toroidal flows on tokamak plasma equilibria are examined in the magnetohydrodynamic limit. “Transonic” poloidal flows of the order of the sound speed multiplied by the ratio of poloidal magnetic field to total field B /B can cause the normally elliptic Grad– Shafranov GS equation to become hyperbolic in part of the solution domain. It is pointed out that the range of...

During the past ten years, the ARIES Team has studied a variety of tokamak power plants with different degrees of extrapolation in plasma physics and technology from present database. Continuation of research has allowed us to apply lessons learned from each ARIES design to the next. The results of ARIES tokamak power plant studies provide a large body of data that highlight the contribution, t...

Nuclear microprobe at 2 MV Tandetron accelerator of Jozef Stefan Institute (JSI) was constructed in the year 2000 with the support of IAEA Technical Cooperation Project SLO/1/004. The measuring station is equipped with instrumentation for micro-Proton-Induced-X-ray-Emission (micro-PIXE), micro-Elastic Recoil Detection Analysis (micro-ERDA), micro-Nuclear Reaction Analysis (micro-NRA), Proton Be...

This paper presents an efficient numerical tool for solving the problem of transient nonlinear evolution plasma equilibrium in presence eddy currents. The code, named FRIDA-TD (FRIDA-Time Domain), and based on existing FRIDA (FRee-boundary Integro-Differential Axisymmetric) exploits two different approaches elated system Partial Differential Equations (PDE): (i) Finite Element Method - Boundary...

Abstract The ongoing development of electromagnets based on high temperature superconductors has led to the conceptual exploration high-magnetic-field fusion reactors tokamak type, operating at on-axis fields above 10 T. In this work we explore consequences potential future availability high-field three-dimensional physics design point a stellarator reactor. We find that, when an increase in ma...

It is experimentally observed that tokamak plasmas exhibits macroscopic flow in the toroidal and poloidal directions. Both the flow can considerably change the equilibrium parameters of tokamak. Equilibrium of HT-6M is revisited as a case study and its equilibrium parameters are simulated in the presence of toroidal and poloidal flows with the FLOW Code developed by L. Guazzotto at that Univers...

Tokamak plasmas are confined by amagnetic field that limits the particle and heat transport perpendicular to the field. Parallel to the field the ionised particles canmove freely, so to obtain confinement the field lines are ‘‘closed’’ (i.e. form closed surfaces of constant poloidal flux) in the core of a tokamak. Towards, the edge, however, the field lines intersect physical surfaces, leading ...

The bifurcated states of a rotating tokamak plasma in the presence of a static, resonant, erroreld are found to be strongly analogous to the bifurcated states of a conventional induction motor. The two plasma states are the \unreconnected" state, in which the plasma rotates and erroreld driven magnetic reconnection is suppressed, and the \fully reconnected" state, in which the plasma rotation a...

A detailed design is presented of a tokamak power reactor with an electron cyclotron resonance heating system. Major research topics include: physics constraints imposed on the design of a reactor by the ECR wave absorption conditions; design of the high frequency (200 GHz) gyrotrons needed for plasma heating; the gyrotron power and magnet systems; a microwave transmission system in oversize wa...