View source for Physics:DAFNE

{{short description|Italian electron-positron collider}}

[[File:DAFNE.jpg|thumb|right]]
'''DAFNE''' or '''DAΦNE''' ('''D'''ouble '''A'''nnular '''Φ F'''actory for '''N'''ice '''E'''xperiments), is an electron-positron collider at the INFN [[Organization:Laboratori Nazionali di Frascati|Frascati National Laboratory]] in Frascati, Italy. It consists of 2 accelerator rings, both approximately 100 meters in length. Since 1999 it has been colliding [[Physics:Electron|electron]]s and [[Physics:Positron|positron]]s at a [[Physics:Center of mass|center of mass]] energy of 1.02&nbsp;GeV to create [[Physics:Phi meson|phi meson]]s (φ). 85% of these decay into [[Physics:Kaon|kaon]]s (K), whose physics is the subject of most of the experiments at DAFNE.

There have been five experiments at DAFNE:
* KLOE ([[Physics:Kaon#CP violation|'''K''' '''LO'''ng]] '''E'''xperiment), which has been studying [[Physics:CP violation|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 ('''FI'''sica '''NU'''cleare a '''DA'''FNE), studies the [[Physics:Emission spectrum|spectra]] and nonmesonic decays of hypernuclei containing [[Physics:Lambda baryon|lambda baryon]]s (Λ). The hypernuclei are produced by negatively charged kaons ({{Subatomic particle|Kaon-}}) striking a thin target.
* DEAR ('''D'''AFNE '''E'''xotic '''A'''toms '''R'''esearch experiment), determines scattering lengths in atoms made from a kaon and a [[Physics:Proton|proton]] or [[Physics:Deuteron|deuteron]].
* DAFNE Light Laboratory ('''DAΦNE-L''') consists of 3 lines of [[Physics:Synchrotron radiation|synchrotron radiation]] emitted by DAFNE, a fourth is under construction.
*  SIDDHARTA ('''SI'''licon '''D'''rift '''D'''etectors for '''H'''adronic '''A'''tom '''R'''esearch by '''T'''iming '''A'''pplication), aims to improve the precision measurements of [[Physics:X-ray|X-ray]] transitions in kaon atoms studied at DEAR.

==External links==
* Homepage of the accelerator division of Frascati National Laboratory: [http://www.lnf.infn.it/public/index.php?option=com_content&view=category&layout=blog&id=41&Itemid=75 public (Italian)], [http://www.lnf.infn.it/acceleratori/ technical]

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{{DEFAULTSORT:Dafne}}
[[Category:Particle physics facilities]]
[[Category:Particle experiments]]
[[Category:Particle accelerators]]



{{Sourceattribution|DAFNE}}