Status of DAFNE

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DA{Phi}NE is a double ring electron-positron collider, designed to provide very high luminosity at the energy of the {Phi} resonance (1.02 GeV c.m.). After storing the first beam in fall 1997, the collider was commissioned without solenoidal detectors until the end of 1998, reaching a single bunch luminosity of 1.6 x 10{sup 30} cm{sup -2}s{sup -1} with 20 mA in each beam, corresponding to a beam-beam tune shift of {approx} 0.03. A longitudinal bunch-to-bunch feedback has been implemented, allowing the storage of more than 0.5 A in 30 bunches for both electrons and positrons. The KLOE detector, embedded into a ... continued below

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Preger, M.; /Frascati; Alesini, D.; Benedetti, G.; Bertolucci, S.; Biscari, C. et al. December 19, 2007.

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Description

DA{Phi}NE is a double ring electron-positron collider, designed to provide very high luminosity at the energy of the {Phi} resonance (1.02 GeV c.m.). After storing the first beam in fall 1997, the collider was commissioned without solenoidal detectors until the end of 1998, reaching a single bunch luminosity of 1.6 x 10{sup 30} cm{sup -2}s{sup -1} with 20 mA in each beam, corresponding to a beam-beam tune shift of {approx} 0.03. A longitudinal bunch-to-bunch feedback has been implemented, allowing the storage of more than 0.5 A in 30 bunches for both electrons and positrons. The KLOE detector, embedded into a superconducting solenoid with strong longitudinal field integral (2.4 Tm, to be compared to a magnetic rigidity of 1.7 Tm) compensated by two other solenoids of opposite field, was installed in winter 1999 and commissioning resumed with a careful correction of the coupling effects. Particular effort has been dedicated to the reduction of background in the experiment, which led to the possibility of injecting the beams in interaction without switching off data taking. The total stored current has reached more than 1 A in each beam, while a transverse feedback system has been realized to counteract vertical instabilities occurring during injection. The collider is now running in the multibunch mode for KLOE data taking with peak luminosity up to 1.8 x 10{sup 31} cm{sup -2}s{sup -1} and integrated luminosity larger than 0.8 pb{sup -1} per day.

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  • Prepared for 18th International Conference on High-Energy Accelerators (HEACC 2001), Tsukuba, Japan, 26-30 Mar 2001

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  • Report No.: SLAC-PUB-13060
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 921297
  • Archival Resource Key: ark:/67531/metadc895993

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  • December 19, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 2, 2016, 12:38 p.m.

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Preger, M.; /Frascati; Alesini, D.; Benedetti, G.; Bertolucci, S.; Biscari, C. et al. Status of DAFNE, article, December 19, 2007; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc895993/: accessed January 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.