CLIC Meeting (Trident Cascade production in beam-beam interaction)

Friday 3 Sept 2010, 09:00 → 10:45 Europe/Zurich

6/2-024 - BE Auditorium Meyrin (CERN)

Gunther Geschonke (CERN)

09:00 → 09:05 Approval of minutes of the last meeting and follow up of actions

Speaker: Gunther Geschonke (CERN)

09:05 → 09:15 Short news of general interest (CSC, etc...)

Speaker: Jean-Pierre Delahaye (CERN)

09:15 → 10:15 Trident Cascade production in beam-beam interaction

The demand for high luminosity in the next generation of linear e+/e−colliders necessitates the consideration of interactions of a single lepton with several ones of the oncoming bunch. In this talk, I will give a brief introduction to the general physics of such coherent processes as well as some of their most important implications for CLIC. The trident cascade process is one of coherent electron-positron pair creation, recently added to the beam-beam simulation program GUINEA-PIG++. Unlike the previously simulated coherent pairs, their creation is mediated by a virtual photon. In CLIC, the yield of this process is comparatively small, but a portion of the particles have got kinematical properties that makes it necessary to consider them in the design of the CLIC detector. I will compare results of recent simulations to those of other relevant processes, and describe the physics of the tridents.

Speaker: Jakob Esberg (Institute of Physics and Astronomy-Aarhus University)

Slides CLIC_03-09-2010_presentation.pdf

10:15 → 10:25 Discussion

10:25 → 10:35 A.O.B.