Accelerator Physics Seminar

Beam-beam studies for Super Proton-Proton Collider

Start:2017/11/24 (Fri) 1:30 PM
End:2017/11/24 (Fri) 3:00 PM
Location:3rd build, 7F, Meeting room

Speaker:Wang Lijiao氏 (IHEP)
Contact:K.Ohmi (PHS 4413)


In China, a two-stage circular collider project, CEPC-SPPC has been proposed. The first stage, CEPC (Circular Electron Positron Collier, a so-called Higgs factory) is focused on the Higgs physics, and the second stage, SPPC (Super Proton-Proton Collider) will be an energy frontier collider and a discovery machine.
Luminosity is a key factor for any particle-physics colliders. With the increasing bunch population, beam-beam interaction is increasingly become the limit factor of luminosity improvement. The finite crossing angle scheme is considered.
Long-range interaction is another significant source of luminosity degrade. In this report, we first don't consider long-range interactions. We study luminosity degrade with crossing angle and without crossing angle for horizontal crossing and horizontal-vertical crossing. Second we discuss luminosity decay with long-range interactions for horizontal crossing and horizontal-vertical crossing. Finally the resulting beam-beam limit will be concluded for SPPC.

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