Oncology 167 (2022) 109–115, https://doi.org/10.1016/j.radonc.2021.12.022 [3] Weber et al, FLASH radiotherapy with carbon ion beams, Med. Phys. 2021 doi:10.1002/mp.15135 [4] Tinganelli et al, Ultra-High Dose [...] Irradiation: Dosimetry and First Cell Experiments, Int. J. Radiat. Onc. Biol. Phys. 2021. doi:10.1016/j.ijrobp.2021.11.020 [5] Tinganelli et al, FLASH with carbon ions: Tumor control, normal tissue sparing [...] the Heidelberg ion-therapy facility (at 10 times lower beam intensity) and continuing at GSI (from 2021), we could the improve and tune the beam monitoring and dosimetry for FLASH Intensity. Finally, this