EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN{PPE/95{64 21 April 1995 Performance of an Electromagnetic Liquid Krypton Calorimeter based on a Ribbon Electrode Tower Structure

نویسندگان

  • G. D. Barr
  • C. Bruschini
  • D. Cundy
  • N. Doble
  • W. Funk
  • M. Ziolkowski
  • S. Palestini
چکیده

The NA48 collaboration is preparing a new experiment at CERN aiming to study CP violation in the K K0 system with an accuracy of 2 10 4 in the parameter Re( = ). Decays into two 's will be recorded by a quasi-homogeneous liquid krypton calorimeter. A liquid krypton calorimeter has been chosen to combine good energy, position and time resolution with precise charge calibration and long-term stability. The prototype calorimeter incorporating the nal design of the electrode read-out structure is presented in this paper. An energy resolution of ' 3:5% p E with a constant term smaller than 0:5% has been obtained. The time resolution was found to be better than 300 ps above 15 GeV.

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تاریخ انتشار 1995