Partners of the NIC are
- Deutsche Elektronen-Synchrotron (DESY) in Hamburg,
- Forschungszentrum Jülich in Jülich, and
- GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt.
The assembly of the partners comprises of two members each of the board of directors from Forschungszentrum Jülich, DESY, and GSI. It decides on financial and instrumental resources of NIC, supported by the Scientific Council. The assembly also appoints the members of the Scientific Council.