| Clue | Source | Date |
|---|---|---|
| The world's largest one straddles the border of France and Switzerland | New York Times | 15 Mar 2019 |
| *Particle accelerator | Universal | 17 Jan 2019 |
| *Particle accelerator | ||
| The world's largest one straddles the border of France and Switzerland | ||
| Particle accelerator | Universal | 04 Jan 2016 |
| Particle accelerator | ||
| Particle accelerator | The Guardian Quick | 28 Mar 2015 |
| Cyclotron | ||
| Physics-lab device | ||
| Cyclotron | ||
| Physics-lab device | ||
| Physicist's device | ||
| Particle accelerator | ||
| Cyclotron | ||
| Nuclear device | ||
| Cyclotron. |