The CERN experimental research programme consists of a large number of experiments conducted at CERN.
The majority of them makes use of the accelerator infrastructure, but there are also non-accelerator
experiments, research & development projects and other research activities supported by CERN.
Institutes collaborating with CERN are participating at one or more experiments. They establish a team for each of the experiments they participate, with a team leader, complemented by deputy team leader(s). Hence, a collaborating institute can have multiple teams.
Participants are members of the teams established by the collaborating institutes. They participate at one or more experiments at CERN and hence, can have multiple participations. Participants can be both (associated) members of the CERN personnel, typically Users, or external participants. They can be authors of scientific papers as a result of their participations at an experiment.