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Investigating beam dynamics with measurement-driven initialization
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DOI：10.1063/5.0280429.png)
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Abstract
En 中文
Accurate knowledge of the phase space at beam creation is essential for understanding and predicting beam dynamics to extract or suppress phase space structures without causing avoidable emittance growth. Both first-principles models-which do not account for beam structure-and simulations using ideal phase space distribution may prove unable to capture unique beam structures. Here, we initialize the phase space distribution in first-principles simulations with velocity-space data measured using a pinhole scan. We show that the evolution of internal beam structure is highly sensitive to these initial conditions; tuning them within their experimental measurement error allows for remarkably accurate replication of the experimental beam evolution, including the emergence of a characteristic cruciform shape. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license
Keywords:
EMITTANCE GROWTH
CHARGE
SIMULATIONS
INTENSE
ENERGY
IMAGE
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