DAFNE

For the French collider DAPHNE, see Détecteur à Grande Acceptance pour la Physique Photonucléaire Expérimentale (DAPHNE)

For "Dose Adjustment For Normal Eating", see Insulin therapy

DAFNE or DAΦNE is the Double Annular ring for Nice Experiments is an electron-positron collider at the INFN Frascati National Laboratory in Frascati, Italy. Since 1999 it has been colliding electrons and positrons at a center of mass energy of 1.02 GeV to create phi (φ) mesons. 85% of these decay into kaons (K), whose physics is the subject of most of the experiments at DAFNE.

There are five experiments at DAFNE.

• KLOE, or K LOng Experiment, which has been studying CP violation in kaon decays and rare kaon decays since 2000. This is the largest of DAFNE experiments.
• FINUDA, or FIsica NUcleare a DAFNE, studies the spectra and nonmesonic decays of Lambda (Λ)-hypernuclei produced by negatively charged kaons (K−
  ) striking a thin target.
• DEAR, or DAFNE Exotic Atoms Research experiment, 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, or SIlicon Drift Detectors for Hadronic Atom Research by Timing Application, aims to improve the precision measurements of X-ray transitions in kaon atoms studied at DEAR.

External links

• The homepage of the accelerator division of Frascati National Laboratory