Andreas Morsch contributed to the AliceO2Group/AliceO2 repository by extending the Cave detector barrel geometry to support FOCAL integration and downstream detectors. He addressed integration challenges by constructing new 3D geometry components in C++, updating the shCaveTR3 module, and realigning RB24 elements to match the revised cave structure. His work involved precise geometry definition and construction, including refactoring beampipes to resolve overlaps and gaps, ensuring accurate spatial alignment. By improving geometric fidelity and system reliability, Andreas reduced future integration rework and enabled more robust detector simulation. His efforts demonstrated strong skills in C++, detector simulation, and cross-subsystem collaboration.