Table 1 Parameter list used in simulations
From: Impedance modelling and collective effects in the Future Circular e+e− Collider with 4 IPs
Layout | PA31-1.0 | |||
|---|---|---|---|---|
Z | WW | ZH | tt̂ | |
Circumference (km) | 91.174117 km | |||
Beam energy (GeV) | 45.6 | 80 | 120 | 182.5 |
Bunch population (1011) | 2.53 | 2.91 | 2.04 | 2.64 |
Bunches per beam | 9600 | 880 | 248 | 36 |
RF frequency (MHz) | 400 | 400/800 | ||
RF Voltage (GV) | 0.12 | 1.0 | 2.08 | 4.0/7.25 |
Energy loss per turn (GeV) | 0.0391 | .37 | 1.869 | 10.0 |
Longitudinal damping time (turns) | 1167 | 217 | 64.5 | 18.5 |
Momentum compaction factor 10−6 | 28.5 | 7.33 | ||
Horizontal tune/IP | 55.563 | 100.565 | ||
Vertical tune/IP | 55.600 | 98.595 | ||
Synchrotron tune | 0.0370 | 0.0801 | 0.0328 | 0.0826 |
Horizontal emittance (nm) | 0.71 | 2.17 | 0.64 | 1.49 |
Verical emittance (pm) | 1.42 | 4.34 | 1.29 | 2.98 |
IP number | 4 | |||
Nominal bunch length (mm) (SR/BS)∗ | 4.37/14.5 | 3.55/8.01 | 3.34/6.0 | 2.02/2.95 |
Nominal energy spread (%) (SR/BS)∗ | 0.039/0.130 | 0.069/0.154 | 0.103/0.185 | 0.157/0.229 |
Piwinski angle (SR/BS)∗ | 6.35/21.1 | 2.56/5.78 | 3.62/6.50 | 0.79/1.15 |
\(\xi _{x} / \xi _{y}\) | 0.004/0.152 | 0.011/0.125 | 0.014/0.131 | 0.096/0.151 |
Horizontal \(\beta ^{*}\) (m) | 0.15 | 0.2 | 0.3 | 1.0 |
Vertical \(\beta ^{*}\) (mm) | 0.8 | 1.0 | 1.0 | 1.6 |
Luminosity/IP (1034/cm2s) | 181 | 17.4 | 7.8 | 1.25 |