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- S. Jolliet, Alberto Bottino, +7 authors Laurent Villard
- Computer Physics Communications
- 2007

A global plasma turbulence simulation code, ORB5, is presented. It solves the gyrokinetic electrostatic equations including zonal flows in axisymmetric magnetic geometry. The present version of the code assumes a Boltzmann electron response on magnetic surfaces. It uses a Particle-In-Cell (PIC), δf scheme, 3D cubic B-splines finite elements for the field… (More)

- Roman Hatzky, Axel Könies, Alexey Mishchenko
- J. Comput. Physics
- 2007

- Ralf Kleiber, Roman Hatzky, Axel Könies, K. Kauffmann, P. Helander
- Computer Physics Communications
- 2011

- Roman Hatzky
- Parallel Computing
- 2006

- Hermann Lederer, Reinhard Tisma, Roman Hatzky, Alberto Bottino, Frank Jenko
- PARCO
- 2007

c © 2007 by John von Neumann Institute for Computing Permission to make digital or hard copies of portions of this work for personal or classroom use is granted provided that the copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise requires prior… (More)

- Hermann Lederer, Roman Hatzky, Reinhard Tisma, Alberto Bottino, Frank Jenko
- CLADE@HPDC
- 2007

For support of the world-wide ITER (International Thermonuclear Experimental Reactor) project [1], large scale numerical simulations will be a necessity. Plasma turbulence simulations play a key role for the design, construction and optimization of the necessary fusion devices. The simulations will be so compute and memory intensive that applications must… (More)

- Phil Andrews, Maarten Büchli, +8 authors Volker Springel
- 2006 IEEE Challenges of Large Applications in…
- 2006

A supercomputing hyper-grid spanning two continents was created to move a step towards interoperability of leading grids. A dedicated network connection was established between DEISA, the leading European supercomputing grid, and TeraGrid, the leading American supercomputing grid. Both grids have adopted the approach of establishing a common, high… (More)

- Alberto Bottino, Bruce Scott, +7 authors Arthur G. Peeters
- 2010

The particle-in-cell code ORB5 is a global gyrokinetic turbulence simulation code in tokamak geometry. It has been developed at CRPP, Lausanne, Switzerland, with major contributions from IPP, Garching, Germany, and IPP, Greifswald, Germany, under a long-standing collaboration. The code ORB5 solves the gyrokinetic equations in the whole plasma core,… (More)

In this paper, we present global nonlinear gyrokinetic simulations including finite βe effects and collisions in tokamak geometry. Global electromagnetic simulations using conventional δf particle in cell methods are very demanding, with respect to numerical resources, in order to correctly describe the evolution of the non-adiabatic part of the electron… (More)

- Ralf Kleiber, Roman Hatzky
- Computer Physics Communications
- 2012

In the case of adiabatic electrons the gyrokinetic field equation for the electrostatic potential includes an averaging operator acting on flux surfaces. For realistic three-dimensional configurations, as e.g. in stellarator devices, the discretisation of this integro-differential equation leads to very large nearly dense matrices (full matrix approach)… (More)