PS Beam parameters
Tagged Photon runs :
The beam parameters has been studied using the first two tagger chambers.
We found that the beam can be described with a gaussian shape with lower/upped bounds.
In the following table are the parameters (with incertitude) for the beam spot gaussian, they don't depend on the beam energy.
Beam Spot | Position |
| Min |
| Max |
| RMS |
|
(mm) | Mean | RMS | Mean | RMS | Mean | RMS | Mean | RMS |
Horizontal | 3.49 | 0.68 | -17.96 | 0.18 | 23.24 | 0.7 | 12.14 | 0.47 |
Vertical | -11.16 | 0.36 | -26.5 | 0 | 8.38 | 0.86 | 10.43 | 0.25 |
In the following table are the parameters for bean divergence as function of the nominal energy of the electron beam.
Divergence |
|
|
|
|
|
Momentum | 0.5 | 1 | 1.5 | 2.5 | (GeV) |
Horizontal | 10.03 | 7.17 | 4.82 | 3.17 | (mrad) |
Vertical | 7.19 | 4.45 | 3.38 | 2.33 | (mrad) |
...