Abstract
Beam stripping losses of H- ion beams by interactions with residual gas and electromagnetic fields are evaluated. These processes play an important role in compact cyclotrons where the beam is produced on an internal ion source, and they operate under high magnetic field. The implementation of stripping interactions into the beam dynamics code OPAL provides an adequate framework to estimate the stripping losses for compact cyclotrons such as AMIT. The analysis is focused on optimizing the high energy beam current delivered to the target. The optimization is performed by adjusting parameters of the ion source to regulate the vacuum level inside the accelerator and minimize the beam stripping losses.
Highlights
Radioisotopes production for medical applications has led to the development and improvement of cyclotrons, which currently play a remarkable role in the sustainability of the radionuclide supply [1], especially for positron emission tomography scans
We describe the implementation of those physical processes into the beam dynamics code Object Oriented Parallel
The gas stripping losses along the acceleration process in Advanced Molecular Imaging Technologies (AMIT) cyclotron has been characterized through OPAL simulations including the pressure field map obtained from MOLFLOW+ results
Summary
Radioisotopes production for medical applications has led to the development and improvement of cyclotrons, which currently play a remarkable role in the sustainability of the radionuclide supply [1], especially for positron emission tomography scans. We use this implementation to evaluate the impact and optimize the beam dynamics of the Advanced Molecular Imaging Technologies (AMIT) cyclotron [18], which is a cuttingedge compact accelerator aimed to produce on-demand short-lived radioisotopes to enhance medical nuclear imaging. This is achieved by an autonomous and small-sized design in order to provide an alternative to the centralized radioisotope production
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