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Breton, D.

Paper Title Page
TUPD23 Detectors for Absolute Luminosity Measurement at DAΦNE 345
 
  • P. Valente
    INFN-Roma, Roma
  • N. Arnaud, D. Breton, L. Burmistrov, A. Stocchi, A. Variola, B.F. Viaud
    LAL, Orsay
  • M. Boscolo, F. Bossi, B. Buonomo, G. Mazzitelli, F. Murtas, P. Raimondi, G. Sensolini
    INFN/LNF, Frascati (Roma)
  • P. Branchini
    roma3, Rome
  • M. Schioppa
    INFN Gruppo di Cosenza, Arcavacata di Rende (Cosenza)
  
 

The Frascati e+e- collider DAΦNE, running at sqrt(s) 1.02 GeV is testing the crabbed waist scheme, aiming to reach a large improvement of the specific and integrated luminosity of the accelerator. In order to have a reliable, fast and accurate measurement of the absolute luminosity a number of dedicated detectors have been designed, built, tested, calibrated and put into operation. In particular, three different monitors have been realized: a Bhabha calorimeter, realized with lead/scintillator tiles read by WLS fibers subdivided in 10+10 phi sectors, a Bhabha GEM tracker, of annular shape, with a 4x16 pads per side, covering the same angular region between 18 and 27 degrees in theta, and a Bremsstrahlung proportional counters realized by a couple of 4 PbWO4 crystals at small angle. Results from the 2008 run of DAΦNE are presented, together with the analysis tools for background subtraction and comparison with GEANT simulations.