Accelerators for a Higgs Factory: Linear vs. Circular (HF2012)

Background

Notes:

• General physics talks:
  • What the LHC can/cannot do for determining the properties of the Higgs
  • The merits of each type of Higgs factory from a physics point of view
  • How many Higgs will be produced per year? – Requirements of beam energy and luminosity
• Issues to compare between linear and circular Higgs factories:
  • Integrated luminosity vs. E_cm
  • Number of experiments a given facility can serve
  • Energy spread, energy calibration and reproducibility (systematic uncertainly in E_cm)
  • Polarization (longitudinal only?)
  • Experimental conditions (background problems)
  • Maturity of each technology
• e⁺e^- collider:
  • e⁺e^- physics for studying the Higgs (including CLIC and ILC performance at the ZH threshold)
  • Description of linear e⁺e^- colliders (ILC, CLIC, SLC)
  • Description of circular e⁺e^- colliders (LEP3, TLEP, SuperTristan, Fermilab site-filler)
  • Limits of a circular collider:
    • Beamstrahlung and beam-beam tune shift
    • Synchrotron radiation and rf
• Muon collider:
  • Muon physics for studying the Higgs
  • Description of a muon collider
  • How close is a muon collider to reality? (key R&D and timeline)
• γ-γ collider:
  • γ-γ physics for studying the Higgs
  • ILC-based γ-γ collider
  • CLIC-based γ-γ collider
  • How close is a γ-γ collider to reality? (key R&D and timeline)