Speaker
Description
From emittance-reduction in synchrotrons to beam delivery systems for particle therapy: a wide range of accelerator applications require achromatic beamlines, even though further constraints differ greatly between the use cases. We present a computational methodology based on multi-bend achromat and fixed field accelerator principles for the design and optimization of compact achromatic beamlines utilizing separate function magnets. It addresses the distinction of the different applications: the trade-off between achievable momentum-acceptance and deviations from the reference beam properties across the energy range. This is implemented via multi-objective optimizations. In the context of the group’s work towards improving proton therapy by overcoming energy layer switching, the tool is employed to create a seven-magnet beamline with ±28% momentum acceptance around the central energy achieving a 30° bend while still meeting relevant beam quality metrics, which provides a simpler alternative to designs based on complex combined-function magnets.