Transcript Monte Carlo Data Repository

Web-Based ILC Multi-Bunch
Simulation Database
Glen White (SLAC / QMUL)
ILC MDI Workshop
SLAC, Jan 8th 2005
ILC mb Simulations
•In the real ILC- colliding bunches aren’t
gaussian.
•Short-range wakes cause systematic
bunch shape distortions, changing the
beam-beam collision dynamics
•E.g. optimum collisions no longer occur at
0 y / 0 y’ offsets.
•Also, first part of train has transitory
behaviour due to luminosity optimisation
procedure
3
Luminosity / cm-2s-1
•To accurately model the luminosity
performance of the ILC, a simulation
environment has been set up to track a
multi-bunch beam from the start of the
linac through to the IP. (See Friday’s talk
by P.Burrows). Simulation data is stored on
a web-based database.
x 10
34
2
1
0
0
100
200
300
Bunch #
400
500
600