2. Quark matter at CERN
The NA49 experiment is one of the
seven experiments involved in the
heavy-ion programme at CERN that
provided evidence for the existence
of a new state of matter. The other
detectors are NA44, NA45, NA50,
NA52, WA97/NA57 and WA98
(see cern.web.cern.ch/CERN/Announcements/2000/NewStateMatter/photos.html).
The NA49 hadron calorimeter shown
here allows us to understand the
global evolution of the hadronic
energy of the colliding nuclei.