BUNCH TRAINS FOR LEP

Since 1995 LEP has been operated with a bunch train scheme which allows head-on collisions of four trains of up to four bunches within a train. The proposal and its implementation are presented, and the consequences for the beam dynamics are discussed in detail. In particular the side effects due to the separation scheme itself and the parasitic beam- beamencounters are computed. The necessity ofa self-consistent treatment is shown and emphasis is placed on a comparison between the expectations and the observations.

[1]  V. Mertens,et al.  Modification of the LEP electrostatic separator systems for operation with bunch trains , 1995, Proceedings Particle Accelerator Conference.

[2]  J. Niederer,et al.  The MAD program , 1983, Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.

[3]  Mike Lamont,et al.  Report of the 1993 Bunch Train Study Group , 1994 .