The FCC-ee design study
Since 12/02/2014, the TLEP design study is part of the FCC design study as FCC-ee
About FCC-ee and TLEP
WG1: Z pole
WG4: Top quark
WG7: New physics
(former) TLEP Steering Group
About the FCCs
FCC internal site
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Mandate and scope
The FCC-ee (TLEP)
The FCC kick-off meeting
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» Frequently asked questions
Frequently asked questions
How is the beam-beam tune shift parameter measured?
What is the longitudinal damping time?
What is the ramp time?
What is the momentum acceptance percentage and how does it relate to beamstrahlung?
What characteristics are implied when you say that the machine operates at the beam-beam limit?
What are the arc regions?
How does a polarization wiggler work?
What concrete measures are taken to mitigate beamstrahlung lifetime limits?
What kind of energy losses does the term "energy spread" include?
What is the bending radius of a circular collider?
What are the differences and relations between beamstrahlung and bremstrahlung?
In what way does synchrotron radiation affect the correct performance of the machine?
What are the beam charge compensation and the crab-waist collision scheme?
What does the hourglass factor H measure?
How is the beam energy calibrated through the resonant spin depolarization?
What are the conceptual differences/similarities between particle peak, particle pole, particle resonance and particle threshold?
What are the line-shape parameters in resonance?
What do you mean exactly by "clean" experimental conditions?
What is the invisible width of a particle?
In particle decays, what is the relation between partial widths and branching ratios?
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