Recent Developments for Efficient 3d Space Charge Computations Based on Adaptive Multigrid Discretizations∗
نویسنده
چکیده
Efficient and accurate space-charge computations are essential for the design of high-brightness charged particle sources. Recently a new adaptive meshing strategy based on multigrid was implemented in GPT and the capabilities were demonstrated. This new meshing scheme uses the solution of an intermediate step in the multigrid algorithm itself to define optimal mesh line positions. In this paper we discuss further developments of this adaptive meshing strategy. We compare the new algorithm with the meshing scheme of GPT where the mesh line positions are based upon the projected charge density.
منابع مشابه
Efficient 3d Space Charge Calculations by Self-adaptive Multigrid Methods Using the Chombo Framework∗
Current and future accelerator design requires efficient 3D space charge computations for high brightness bunches which should be as precise and fast as possible. One possible approach for space charge calculations is the particle-mesh-method, where the potential is calculated in the rest frame of the bunch by means of Poisson’s equation. For an efficient solution of this elliptic PDE an approp...
متن کاملAn Efficient 3d Space Charge Routine with Self-adaptive Discretization
Precise and fast 3D space charge calculations for bunches of charged particles are still of growing importance in recent accelerator designs. A widespread approach is the particle-mesh method computing the potential of a bunch in the rest frame by means of Poisson’s equation. Whereas an adaptive discretization of a bunch is often required for efficient space charge calculations in practice, suc...
متن کاملEfficient 3d Space Charge Calculations with Adaptive Discretization Based on Multigrid∗
Precise and fast 3D space-charge calculations for bunches of charged particles are still of growing importance in recent accelerator designs. A widespread approach is the particle-mesh method computing the potential of a bunch in the rest frame by means of Poisson’s equation. An adaptive discretization following the particle density distribution is implemented in the GPT tracking code together ...
متن کاملDevelopment and Application of Parallel Agglomerated Multigrid Methods for Complex Geometries
We report further progress in the development of agglomerated multigrid techniques for fully unstructured grids in three dimensions. Following the previous studies that identified key elements to grid-independent multigrid convergence for a model equation, and that demonstrated impressive speed-up in single-processor computations for a model diffusion equation, inviscid flows, and Reynolds-aver...
متن کاملNew 3d Space Charge Routines in the Tracking Code Astra∗
Precise and fast 3D space-charge calculations for bunches of charged particles are of growing importance in recent accelerator designs. One of the possible approaches is the particle mesh method, computing the potential of the bunch in the rest frame by means of Poisson’s equation. In this, the charges of the macro particles representing the distribution of the particles of the whole bunch are ...
متن کامل