Table 4. Geometrical acceptance (due to the finite mirror sizes and the photon beam divergence), reflectivity and overall transmission of the photon beam transport system.
| Wavelength (nm) | FEL | rms (rad) | Geometrical acceptance (%) | Reflectivity (%) | Overall transmission (%) |
|---|---|---|---|---|---|
| 65 | 1 | 81.3 | 41.3 | 54.8 | 22.7 |
| 52 | 1 | 65 | 54.5 | 58.0 | 31.6 |
| 43 | 1 | 53.8 | 68.1 | 57.4 | 38.8 |
| 32 | 1 | 40 | 86.9 | 59.8 | 51.3 |
| 20 | 1 | 25 | 99.3 | 56.7 | 56.6 |
| 20 | 2 | 30 | 97.0 | 54.6 | 55.3 |
| 10 | 2 | 15 | >99 | 64.5 | 65.0 |
| 8 | 2 | 12 | >99 | 54.8 | 54.3 |
| 6 | 2 | 9 | >99 | 12.0 | 11.9 |
| 4 | 2 | 6 | >99 | 5.0 | 4.98 |