| Work package | Work package holder | |
| Integrated Baseline Design and Parameters | D. Schulte | |
| Integrated Modelling and Performance Studies | A. Latina | |
| Feedback Design, background, Polarization | D. Schulte | |
| Machine Protection & Operational Scenarios | M. Jonker | |
| Magnetic stray Fields Measurements | S. Russenschuck | |
| Main beam electron source | S. Doebert | |
| Main beam positrion source | S. Doebert | |
| Damping Rings | Y. Papaphilippou | |
| Ring-To-Main-Linac | A. Latina | |
| Main Linac - Two-Beam Acceleration | D. Schulte | |
| Beam Delivery System | R. Tomas | |
| Machine-Detector Interface (MDI) activities | L.Gatignon | |
| Drive Beam Complex | D. Schulte |