| DATE: |
2014-07-31 10:00 - 12:00 |
| PLACE: |
Build. no. 3, Meeting room |
| TITLE: |
Accelerator Seminar: Challenges for Highest-Energy Circular Colliders |
| CONTACT: |
Katsunobu Oide |
| SPEAKER: |
Frank Zimmermann (CERN) |
| LANGUAGE: |
English |
| ABSTRACT: |
In preparation for the post-LHC era, the Future Circular Collider (FCC) study, launched in early 2014, is developing a 100-TeV c.m. proton-proton collider (FCC-hh), based on 16-T Nb3Sn magnets and a new 100-km tunnel infrastructure. The FCC study also includes the design of a high-luminosity e+e- collider in the same tunnel (FCC-ee, formerly TLEP), operating at c.m. energies from 91 GeV up to 350-500 GeV, as a potential intermediate step. In addition, the FCC study considers a highest-energy proton-lepton option (FCC-he). A parallel design study in China prepares for a similar, but smaller e+e-/pp collider, called CepC/SppC.
The key design challenges for FCC-ee include efficient high-gradient cw SRF systems, top-up injection scheme, optics design for arcs and final focus, effects of beamstrahlung, beam polarization, energy calibration, as well as power consumption. FCC-hh faces other challenges, such as high-field magnets, machine protection, and the effective handling of large synchrotron radiation power in a superconducting machine.
Depending on the LHC results and on decisions taken elsewhere, several possible scenarios and alternative evolutions of the CERN complex can be conceived. |
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