47 Dolinskyy, Oleksiy Ondreka, David Spiller, Peter SISpub 16th International Particle Accelerator Conference 2025 JACoW Publishing Geneva Taipei, Taiwan 10.18429/JACoW-IPAC2025-MOPS140 832-835 The SIS100 synchrotron, currently under construction as part of the FAIR project, is set to play a pivotal role in advancing high-intensity ion beam research. Reaching the FAIR design intensities for low charge-state heavy ions, e.g. the reference ion U28+ will, however, be challenging due to limitations of the existing SIS18 synchrotron serving as injector to SIS100. In the long-term, the integration of a new linear accelerator capable of delivering high-intensity ion beams at energies up to 200 MeV/u would open the possibility of direct multi-turn injection (MTI) into SIS100, bypassing the SIS18. This paper investigates the MTI process for U28+ beams, aiming to accumulate up to 5x1E11 particles per cycle with high efficiency and minimal particle losses on the electrostatic septum. We present a theoretical analysis of horizontal-plane MTI, outline achievable beam performance, and discuss system requirements. Additionally, the proposed layout and parameters of the MTI equipment are detailed. Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. ; 33, ; PUB:(DE-HGF)8, ; Contribution to a conference proceedings 2025 2025-06-01 - 2025-06-06 GSI-2026-00365 2025-06-01 - 2025-06-06 2025 https://repository.gsi.de/record/365271 https://doi.org/10.18429/JACoW-IPAC2025-MOPS140