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.
                  
                
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