DAFNE
DAFNE or DAΦNE, is an electron-positron collider at the INFN Frascati National Laboratory in Frascati, Italy. It consists of 2 accelerator rings, both approximately 100 meters in length. Since 1999 it has been colliding electrons and positrons at a center of mass energy of 1.02 GeV to create phi mesons. 85% of these decay into kaons, whose physics is the subject of most of the experiments at DAFNE.
There have been five experiments at DAFNE:
- KLOE, which has been studying CP violation in kaon decays and rare kaon decays since 2000. This is the largest of DAFNE experiments. It has been continued by the KLOE-2 experiment.
- FINUDA, studies the spectra and nonmesonic decays of hypernuclei containing lambda baryons. The hypernuclei are produced by negatively charged kaons striking a thin target.
- DEAR, determines scattering lengths in atoms made from a kaon and a proton or deuteron.
- DAFNE Light Laboratory consists of 3 lines of synchrotron radiation emitted by DAFNE, a fourth is under construction.
- SIDDHARTA, aims to improve the precision measurements of X-ray transitions in kaon atoms studied at DEAR.