Asymmetrical alternate phase (A-APF) focusing realized in a sequence of 36 superconducting quarter wave resonators (QWRs) has been shown to accelerate almost 81% of input uranium beam before foil stripper to an energy of 6. 2 MeV/u from 1. 3 MeV/u. https://unitedssports.shop/product-category/inline-wheels-street/