A completed forward pixel disk is installed in its service cylinder, where it will eventually be connected to electronics and cooling. Each of the 672 silicon sensors is connected to electronics boards via thin flexible cables (seen dangling below the disk). The map (seen on the table) is important for routing all the cables and making the right connections inside the service cylinder.
From left: Stephanie Timpone, Greg Derylo, Otto Alvarez, all of Fermilab. Photo: Maximilien Brice, CERN