From: The FCC-ee vacuum system, from conceptual to prototyping
E (GeV)
\(E _{c}\) (keV)
\(k_{f}\)
45.6
19.55
0.9280
80
105.54
0.9592
120
356.20
0.9730
175
1104.75
0.9816
182.5
1252.96
0.9824