Beam-Beam effects at the International Linear Collider & impact on experimentation

por Cecile Rimbault (LAL-Orsay)

lunes 19 dic. 2005 15:00 → 16:00 Europe/Madrid

Sala de Juntas del IFIC (Edf. Institutos de Investigación)

In a linear collider, the luminosity is obtained by focusing the beams at the interaction point to very small transverse sizes, typically of a few nm in a vertical plane. The electric and magnetic forces from each charge distribution strongly deflect the trajectories of the opposite bunch particles. While enhancing the luminosity this also results in several secondary effects important for experimentation at ILC: backgrounds from low energy particles emitted through radiative effects and biases in physics measurements, e.g. from the dilution of the centre of mass energy, from acceptance distortions in the selection of Bhabha events, from depolarising effects… These effects are studied in the context of an on-going programme to improve one of the main beam-beam interaction simulation codes, GUINEA-PIG, and to assess its results for the ILC.