| Parameter | Value | Comment |
| Momentum | 1180 GeV | |
| gamma | 1257.63 | |
| emittance | 2 to 3.5 microns | can vary from PS/SPS |
| beam size - beta* = 11 m. | 133 - 175 microns | given the above |
| longitudinal emittance | ~1 eV.s | can vary from SPS |
| bunch length - 8 MV | 7 -8 cm | Will keep voltage at 8 MV for 1180 GeV run, bunch length could go up with increasing intensity |
No squeeze (although if things go well, a test is foreseen.)
Note that these would be successful result of an intense commissioning period at the end of 2009 and are by no means given. Things will have to have gone very well even to deliver a couple of good fills. Intensity necessarily very limited - our so-called safe beam limit is around 2.5 e11at this energy and it is very unlikely our machine protection system commissioning will be sufficiently advance to pass this limit.
Possible range of luminosities:
No of bunches |
Bunch intensity |
peak lumi |
integrated lumi 8 hour fill |
1 |
4 e10 |
7.3 e27 |
0.15 nb-1 |
2 |
5 e 10 |
1.5 e28 |
0.3 nb-1 |
4 |
5 e 10 |
2.9 e28 |
0.5 nb-1 |
ML November 09