Speaker
Description
A new Energy Compression System (ECS), consisting of four consecutive RF cavities, was installed in the SuperKEKB electron transfer line (BTe) during the 2025 summer shutdown. Optimising BTe performance using full multi-turn injection simulations is computationally demanding and often slow.
To accelerate this process, we compare the beam tracked through BTe — including the ECS — to the dynamic aperture (DA) of the High-Energy Ring (HER) lattice obtained from Xsuite simulations. The SAD lattices were converted to Xsuite and benchmarked to ensure consistency between the two frameworks.
This method provides a fast, first-order estimate of the expected injection efficiency by optimising the survival fraction through the evaluation of particle action amplitudes, while also accounting for physical apertures.
Radiation effects can be optionally included. Different injection schemes (betatron (BI), synchrotron (SI), and synchro-betatron (SBI)) are supported within the same framework. Together, these elements enable rapid optimisation of the ECS parameters with significantly reduced computational cost.
| In which format do you inted to submit your paper? | LaTeX |
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