TRIUMF Boosts Rare Isotope Beam Production with Magnetic Breakthrough
Scientists at TRIUMF have made significant strides in enhancing rare isotope beam production. They've precisely modeled quadrupole magnets, including previously overlooked fringe field effects, using advanced simulations. This breakthrough allows for faster and more efficient tuning of the accelerator, boosting delivery of rare isotope beams for vital research in nuclear science and medicine.
Researchers, including David J. Wilkinson and colleagues, have meticulously modeled and optimized fringe field effects in quadrupole magnets using Opera-3D and TRANSOPTR simulations. These fringe fields, disturbances at the edges of magnetic components, significantly impact beam transport, particularly in the medium-energy section of the Radioisotope Beam (RIB) postaccelerator at TRIUMF's Isotope Separator and Accelerator (ISAC) facility.
The team, led by O. Shelbaya, O. Hassan, and R. Baartman, has developed a method to accurately model and optimize these magnetic fields. They've incorporated detailed magnetic modeling into the TRANSOPTR beam optics model, improving beam tuning. Additionally, they've implemented autofocusing techniques and Bayesian optimization to automate the tuning process and used machine learning for beam diagnostics, further enhancing efficiency.
This research addresses technical challenges such as accurately modeling fringe fields and managing the complexity of the drift tube linac's structure. By improving beam dynamics simulations and automating the tuning process, scientists have maximized the delivery of rare isotope beams. This breakthrough paves the way for more efficient and faster production of rare isotopes, crucial for advancements in nuclear science and medicine.
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