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New Semi-Implicit Electrostatic Particle-In-Cell Method to Extend Scope of the Exascale WarpX Code
DescriptionTime-explicit fully-kinetic simulation of magnetically confined fusion plasmas is out of reach of existing supercomputers due to the multi-scale nature of the system. Physics approximations and time-implicit methods are typically used to simulate such plasmas. A new energy-conserving, semi-implicit Poisson solver has been developed and added to the open-source particle-in-cell code WarpX. The new solver enables electrostatic simulations to be performed using orders of magnitude less computational resources than previously possible, without reducing accuracy. Accuracy and computational speedup of the model is demonstrated by simulation of plasma expansion into vacuum and the spoke mode formation during Penning discharge (relevant to the plasma processing industry). The reduction in time-to-solution allows researchers to tackle problems that were previously computationally infeasible. Performance on GPUs and issues of scaling to fusion plasma conditions are discussed.
Event Type
ACM Student Research Competition: Graduate Poster
ACM Student Research Competition: Undergraduate Poster
Doctoral Showcase
Posters
TimeTuesday, 19 November 202412pm - 5pm EST
LocationB302-B305
Registration Categories
TP
XO/EX