SpaceCharge.jl

A high-performance Julia package for space charge field calculation with GPU acceleration.

Overview

SpaceCharge.jl is a Julia package designed for calculating space charge fields in particle accelerators. Adapted from the Fortran package OpenSpaceCharge used by Bmad, this package provides researchers and accelerator physicists with powerful tools to model the complex interactions between charged particle beams and their self-generated electromagnetic fields.

Key Features

  • Particle-In-Cell: Fast FFT solver using Integrated Green’s Functions method
  • GPU Acceleration: Leverages modern hardware for parallel computation
  • Benchmarked Speedup: We evaluated performance on common problem sizes and achieved 10-100x speedup on GPUs

Easy to use

# Quick setup
using Pkg
Pkg.add(url="https://github.com/ndwang/SpaceCharge.jl.git")

using SpaceCharge
# Create a Mesh3D object with automatic bounds
mesh = Mesh3D(grid_size, particles_x, particles_y, particles_z)
# Deposit particle charges onto the grid
deposit!(mesh, particles_x, particles_y, particles_z, particles_q)
# Solve for electric field
solve!(mesh)
# Interpolate fields back to particle positions
Ex, Ey, Ez = interpolate_field(mesh, particles_x, particles_y, particles_z)