1 Scientist working on the tube where anti-hydrogen is made
2 Positron (anti-electron) source
3 Positron chiller (to slow particles down)
4 Liquid nitrogen for cooling the magnets
5 Radiation safety door into the AD. Walking through this door while the accelerator is operating is a bad idea.
6 Antiprotons enter Athena through this wall
7 Magnet inside which antimatter interactions occur. Also houses detectors.