The project investigates the possibility of constraining the symmetry energy of nuclear matter and the parameter L through measurements of neutron-removal cross sections in collisions of neutron-rich tin isotopes with a carbon target at high energies. The analysis of experimental data collected at the GSI facility within the R3B collaboration, combined with Glauber model calculations and data from the NeuLAND neutron detector, will enable the determination of neutron-skin thicknesses in exotic nuclei and provide improved constraints on the equation of state of nuclear matter.