Single Higgs at 125 GeV CoM * sigmaXBR measurements * EFT coupling fits * Resonance scan mass and width

Double Higgs at 280 GeV CoM * Full analysis in all major channels * ey --> eH for absolute coupling determination

Polarization at 125 GeV CoM * CP single Higgs studies * BSM Higgs (yy > A, H)

Full detector simulation * Beam-beam, beam-laser, and machine background occupancy studies * Track reconstruction in the presence of beam backgrounds, impact on inner vertex radius * Soft x-ray forward background * Algorithms for background suppression * Pileup * Characterization * Algorithms for pileup suppression

Demonstrator projects * Low energy photon-photon collider * 100 mJ/pulse soft X-ray FEL

Conceptual design of a high-power XFEL interaction region and X-ray focusing system for 125 GeV CoM * x-ray optics * electron beam final focus * electron and XFEL beamline layouts * beam dumps * machine detector interface issues

10 TeV * Beam-laser and laser optimization studies * Luminosity, optical vs XFEL * Physics case * Backgrounds