Speaker
Description
The GSI heavy ion synchrotron SIS18 delivers ion beams via slow extraction
to various experiments, for a wide range of ion species, beam energies,
and spill lengths. For the upcoming FAIR Early Science program, extraction
intensities of more than 1E9 uranium ions per second are required at
energies up to about 1 GeV/u. One of the most important tasks for the slow
extraction is limiting uncontrolled particle losses. Limits arise from the
requirement to avoid damage of the extraction septa and to minimize the
activation of accelerator components. For the highest expected
intensities, the limits are a few percent only. That requires a robust
optimization of the machine settings. Therefore, automated schemes using
numerical optimizers are developed at GSI and tested for quadrupole driven
and rf ko slow extraction, in simulation as in measurements. We will
report on first results that demonstrate the fast convergence of the
observed transmission toward similar values, both in the simulation model
and in the measurements.The validated simulation model allows for
important insights into the optimized settings.
| In which format do you inted to submit your paper? | LaTeX |
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