arXiv subjects
Publications and source records attributed to A. Ghigo.
The results of 2002 DAFNE operation for the two experiments KLOE and DEAR are described. During 2003 a long shutdown has been dedicated to the installation of new Interaction Regions (IR) and to hardware modifications and upgrades. In the last section optics studies and performances expectations for the new machine configuration are reported.
High luminosity in DAFNE needs very high electron and positron currents stored. A full energy (510 MeV) injection system composed by a full energy electron and positron linac and an accumulator-damping ring is presently used. The electron and positron beams, alternatively accelerated by the linac, are injected and stacked in the accumulator with high efficiency thanks to its large acceptance and short damping time. The damped beams are extracted and transferred to the main ring through a long transfer line that has been built inside already existing buildings. The refill time of the collider is limited by the transfer line set-up change between the two different beams modes. In this paper a transfer line modification is proposed in order to reduce the switch time. A possible injection scheme for the main rings is also described.
We have performed bunch lengthening and microwave instability threshold measurements on the positron ring of the Frascati electron-positron Phi-factory DAPhNE. The results are in a good agreement with earlier analytical predictions and numerical simulations.