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TY - CONF AU - Xiao, C. AU - Du, X. AU - Groening, L. ED - Zhao, Hongwei ED - He, Yuan ED - Li, Lu ED - Schaa, Volker RW TI - Investigations on KONUS beam dynamics using the pre-stripper drift tube LINAC at GSI J2 - Proc. of HIAT2018, Lanzhou, China, 22-26 October 2018 CY - Lanzhou, China T2 - International Conference on Heavy Ion Accelerator Technology T3 - 14 LA - english AB - Interdigital H-mode (IH) drift tube linacs (DTLs) based on KONUS beam dynamics are very sensitive to the rf-phases and voltages at the gaps between tubes. In order to design these DTLs, a deep understanding of the underlying longitudinal beam dynamics is mandatory. The report presents tracking simulations along an IH-DTL using the PARTRAN and BEAMPATH codes together with MATHCAD and CST. Simulation results illustrate that the beam dynamics design of the pre-stripper IH-DTL at GSI is sensitive to slight deviations of rf-phase and gap voltages with impact to the mean beam energy at the DTL exit. Applying the existing geometrical design, rf-voltages, and rf-phases of the DTL were re-adjusted. In simulations this re-optimized design can provide for more than 90% of transmission of an intense 15 emA beam keeping the reduction of beam brilliance below 25%. PB - JACoW Publishing CP - Geneva, Switzerland SP - 102 EP - 106 KW - DTL KW - simulation KW - cavity KW - linac KW - focusing DA - 2019/11 PY - 2019 SN - 978-3-95450-203-5 DO - doi:10.18429/JACoW-HIAT2018-WEOAA02 UR - http://jacow.org/hiat2018/papers/weoaa02.pdf ER -