| Directorate Services Unit (DSU) (22,451) |
| Technology Department (TE) (158) |
| Finance and Procurement (FP) (2,978) |
| Physics (PH) (40,372) |
| Accelerator Technology (AT) (5,200) |
| Accelerators & Beams (AB) (20,748) |
| Technical Support (TS) (1,386) |
| Information Technology (IT) (4,995) |
| Human Resources (HR) (1,096) |
| Engineering Department (EN) (426) |
| Beams Department (BE) (800) |