Automated Optimization of the ISAC-II Heavy Ion Linac
Date
2023-04-18
Authors
Kiy, Spencer Ray
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Abstract
The ISAC (Isotope Separator and ACcelerator) II superconducting heavy ion linac
at TRIUMF enables delivery of radioactive ion beams for various nuclear physics
experiments at TRIUMF. Since the installation and commissioning of the linac in
two phases (2006, 2010), it has been operated predominantly by manual adjustments
of control system parameters by operators or experts. These empirical adjustments
of beam optics elements, as well as amplitude and phase of accelerating cavities,
constitutes a significant amount of overhead, reducing the efficiency of the facility. To
implement automated optimization of the linac, a model is first built in TRANSOPTR, a
beam envelope code widely used at TRIUMF. The control system parameters are then
closely studied so as to properly calibrate the model to the real system. Finally, the
model is used to automatically calculate control system settings during optimization
of the linac.
Description
Keywords
accelerator, linac, physics, TRIUMF, beam optics, RF cavity