• A “component” of the project can be defined, following an increasing degree of complexity, as any subtask or task or work package or as well as any block of subtasks/tasks/ work packages.

  • Interdependency” between components can be any “cause-effect” relation between two or more components. Interdependency is therefore a one-way relation, by definition.

  • A way to identify interdependency is to investigate the roles played by the components within the project. This requires examining whether components act as “tools” to obtain “goals” represented by other components, thanks to the action of the tools. This is a clear link of interdependency between components.

  • It may occur that a “goal” becomes a tool for another goal, and so on.

  • It may also occur that components simultaneously play the roles of tool and goal. Example: the component A provides the component B with relevant service, and, at the same time, is fed by the component B in order to produce that service.
In what follows, we illustrate a number of interdependencies between components of the HadronPhysics2 project.


1 Interdependencies between a networking activity and facilities

The networking activity FAIRnet (WP7) aims at obtaining synergetic effects by performing and coordinating joint R&D (hardware and software) on topics that have common requirements for the facilities FAIR-CBM and FAIR-PANDA. Implementing the facilities therefore depends on the WP7 FAIRnet activity.

2 Interdependencies between RTD activities and a networking activity

A number of tasks of RTD activities aim at implementing the networking activity FAIRnet.

In these two cases the network plays the double role of “tool” and “goal”, respectively.

The interdependencies are shown in Figure 1 below.


Figure 1 - Interdependencies of a networking activity

3 Interdependencies between RTD activities, experiments and infrastructures

The FAIR-PAX experiment, at the HighEnergyStorageRing (HESR) of the future complex of accelerator FAIR, aims at studying double polarized antiproton-proton reactions. A specific RTD activity, PolAntiP (WP25), will perform a feasibility study for the production of polarized antiprotons. Most of the tasks of this RTD activity concern studies and measurements to be performed at the infrastructure COSY (WP13).
The initial stage of the experiment PAX, the implementation of the PAX interaction region for the fixed target phase, is one of the tasks of the RTD activity HardEx (WP23).
Figure 2 below shows this system of interdependencies.

Figure 2 - Interdependencies between RTD activities, infrastructure and experiment