DAFNE Experience with Negative Momentum Compaction

Details DAFNE Experience with Negative Momentum Compaction DAFNE Experience with Negative Momentum Compaction

2006-07-05

arxiv.org/abs/physics/0607036v1

Physics

Accelerator Physics

Talk given at 10th European Particle Accelerator Conference (EPAC06), Edinburgh, UK 26-30 June 2006

Scientific paper

There are several potential advantages for a collider operation with a lattice with negative momentum compaction factor (alfa). Since the lattice of the Frascati e+e- Phi-factory DAFNE is flexible enough to provide collider operation even with alfa < 0, we have exploited this possibility for an experimental study of the beam dynamics. The negative momentum compaction lattices have been successfully implemented and stable 1 A currents have been stored in both electron and positron rings without any problem for RF cavities and feedback systems operation. First collisions have been tested at low currents. In this paper we describe the experimental results and compare them with expectations and numerical simulations. Present limitations to DAFNE operation with alfa < 0 and ways to overcome them are also discussed.

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