Experiment COMPASS

The NA58 experiment, or COMPASS (Common Muon and Proton Apparatus for Structure and Spectroscopy) is a fixed-target particle physics experiment at the Super Proton Synchrotron, a particle accelerator at the European Organization for Nuclear Research (CERN). It is a two-level magnetic spectrometer with calorimeters in both levels and particle identification in the first level.

There are several research projects underway at COMPASS:

  • understanding the contribution of the gluons to the spin of the proton and other nuclei,
  • production and investigation of exotic mesons,
  • production and investigation of charmed mesons.

The COMPASS-Group of the Institute for Nuclear Physics at Mainz supervises the CEDAR-Detectors and the Trigger System of the COMPASS-Experiment collaboration with a working group of the Physical Institute in Bonn.