SC Group | SC Division | MSC Division | PS Division |
| SC Division Leaders | C. Bakker (1952-1954) | P. Preiswerk (1959-1960) |
| SC Series | SC Reports 1952-1958 CERN-SC-1 to 149 | SC Internal reports 1958 to 1960 | ||||||
| SC Groups in 1957 | Groups | Leaders |
| Administration | Bricka, L D | |
| Operation | Fredriksson, O | |
| Special Development | Krienen, F | |
| Mechanical Workshop | Pozzo, G | |
| Drawing Office | Blythe, F | |
| Construction – Magnet & Deflection System | Hedin, B | |
| Construction – High Frequency | Schmitter, K H | |
| Construction – General Layout, Mechanical Workshop | Bonaudi, F & Broadbent, D H | |
| Electronics | von Dardel, G | |
| Spallation | Goebel, K | |
| Polarized Protons | Keller, R | |
| $\pi-meson$ experiment | Merrison, A W & Lundby, A | |
| $\mu$ meson experiment | Citron, A |
| MSC Division Leaders | G. Brianti (1964-1967) | E.G. Michaelis (1968-1975) |
| MSC Groups | ADM | EN | OP | PR | SD |
| MSC Series | MSC-M Reports | MSC Reports | ||||||
| MSC-ADM | Administration | E. Michaelis |
| MSC-EN | Engineering | F. Blythe |
| MSC-OP | Operation | Picco / F. Franzetti / M. Lazanski |
| MSC-PR | New Projects | M. Barbier / N. Vogt-Nilsen |
| MSC-SD | Studies & Development | H. Berger |
| MSC- | Development & Research (1962) | L. Dick |