Speakers
Description
The US Department of Energy INFUSE collaboration between Realta Fusion and Lawrence Berkeley National Laboratory (LBNL) aims to extend WarpX towards high fidelity modeling of neutral beam injection (NBI) systems. WarpX is a parallel, open source, and portable particle-in-cell (PIC) code with an active developer community and demonstrated scalability. In this work, we implement and validate the plasma meniscus modeling for a positive ion source using first principle PIC simulations. These simulations are performed in the electrostatic mode with extraction electrodes represented as embedded boundaries. The upstream plasma reservoir is modeled using a thermal injection scheme with real electron mass to capture the correct sheath physics. These results and validations form a crucial basis for future extensions to negative ion sources and photoneutralization, enabling start to end NBI modeling within WarpX.
Funding Agency
Work supported by Realta Fusion and the INFUSE program under CRADA No. FP00019597. Simulations performed on NERSC under Contract No. DE-AC02-05CH11231 using NERSC award FES-ERCAP0026655.
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