​The following URL takes you to a page where the beamline is described. Look for the Solid Edge drawings. These show the optical tables where the FACET experiments are installed. There are four different experimental setups and the two tables are a toal of 24 feet in length. In principle an absolutely outstanding proposal could use the entire space (although this is extremely unlikely!). We make every effort to accommodate all experiments and if this requires de-installing existing experiments, we can do it. It's usually a question of resolving scheduling difficulties, minimizing risk and being able to do the work safely.

https://portal.slac.stanford.edu/sites/ard_public/facet/facilities/Pages/default.aspx