WEAM2X01
GSI, Darmstadt, Germany
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WEAM2X01 |
PIC Solvers for Intense Beams: Status and Future Prospects | |
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| Particle tracking codes employing Particle-In-Cell (PIC) techniques for the space charge forces are the standard tool for studies of incoherent and coherent effects in intense beams. The numerical noise inherent to the PIC scheme is a concern for accurate predictions of emittance growth and beam loss in synchrotrons and accumulator rings for high intensity. The predictions require long-term simulation including space charge forces obtained self-consistently. Besides the noise reduction, for long-term accuracy particle tracking schemes should also be symplectic. A novel class of multi-symplectic PIC integrators, originally developed for applications in plasma physics, promises bounded phase space motion together with noise reduction. For illustration a 2d symplectic space charge algorithm will be introduced and applied to a beam in a simple periodic focusing structure. The obtained noise characteristic, numerical emittance growth and performance will be compared to standard PIC schemes. Possible directions for future developments will be outlined. | ||
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Slides WEAM2X01 [1.955 MB] | |