described by technical design reports written by the collaboration and approved by the FAIR Expert Committee Experiments (ECE). Beam transport infrastructure (PSP Code: 1.3.2.1.1) TDR: "Beam matching section [...] the 650 m 2 of the supply building. In addition to the plasma physics community, the cave hosts experiments from the SPARC and BIOMAT collaborations. Overview of the APPA Cave The plasma physics ion beamline [...] Code: 1.3.2.1.2) TDR: " Large-aperture high-gradient superconducting quadrupoles for HEDgeHOB experiments " Authors: A. Ageyev, A. Blazevic, I. Bogdanov, E. Kashtanov, M. Kauschke, H. Kollmus, S. Kozub