Month 2 - 3.5 TeV. Assume only a few days un-squeezed before commissioning squeeze, establishing stable operation at nominal beta* values and then gently pushing the intensity.
| Sub-phase | Bunch configuration |
Bunch Intensity |
beta* |
Luminosity |
Time |
Integrated luminosity |
| First collisions | 1 x 1 |
2 x 1010 |
11 m |
3.2 x 1027 |
1 day@40% availability | ~0.1 nb-1 |
| Repeat ramp - same conditions | 1 x 1 |
2 x 1010 |
11 m |
3.2 x 1027 |
2 days @ 40% availability | ~0.2 nb-1 |
| Multi-bunches at injection & through ramp. Machine protection - full qualification: collimation, beam dumps, BLMs | - |
- |
- |
- |
7 days (NB) | - |
| Physics | 4 x 4 |
3 x 1010 |
11 m |
2.9 x 1028 |
2 days @ 40% availability, 8 hour turnaround | ~1 nb-1 |
| Physics | 12 x 12 |
3 x 1010 |
11 m |
8.8 x 1028 |
2 days @ 40% availability, 8 hour turnaround | ~3 nb-1 |
Numbers include luminosity lifetime (20 hours), 8 hour fills, turn around and low-ish machine availability (40%). There will still be lots of things to sort out - good machine availability is not guaranteed.