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@inproceedings{wiesner:ipac2021-mopab024, author = {C. Wiesner and F. Carra and J. Kruse-Hansen and M. Masci and Y. Nie and D. Wollmann}, title = {{Efficient Coupling of Hydrodynamic and Energy-Deposition Codes for Hydrodynamic-Tunnelling Studies on High-Energy Particle Accelerators}}, booktitle = {Proc. IPAC'21}, pages = {119--122}, eid = {MOPAB024}, language = {english}, keywords = {simulation, target, coupling, proton, experiment}, venue = {Campinas, SP, Brazil}, series = {International Particle Accelerator Conference}, number = {12}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {08}, year = {2021}, issn = {2673-5490}, isbn = {978-3-95450-214-1}, doi = {10.18429/JACoW-IPAC2021-MOPAB024}, url = {https://jacow.org/ipac2021/papers/mopab024.pdf}, note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB024}, abstract = {{The machine-protection evaluation of high-energy accelerators comprises the study of beyond-design failures, including the direct beam impact onto machine elements. In case of a direct impact, the nominal beam of the Large Hadron Collider (LHC) would penetrate more than 30 meters into a solid copper target. The penetration depth due to the time structure of the particle beam is, thus, significantly longer than predicted from purely static energy-deposition simulations with 7 TeV protons. This effect, known as hydrodynamic tunnelling, is caused by the beam-induced density depletion of the material at the target axis, which allows subsequent bunches to penetrate deeper into the target. Its proper simulation requires, therefore, to sequentially couple an energy-deposition code and a hydrodynamic code for the different target densities. This paper describes a method to efficiently couple the simulations codes Autodyn and FLUKA based on automatic density assignment and input file generation, and presents the results achieved for a sample case.}}, }