The NA48 Liquid Krypton Calorimeter Project
Presented by A. Ceccucci
CERN, PPE Division
1211 Genève 23
5 March 1996
The CERN-NA48 Experiment
The NA48 collaboration is preparing a new experiment
to measure with an accuracy of .
The principle of the experiment is to collect the four relevant
decay modes concurrently, in the same detector
collinear K and K beams,
the proton which produces the K particle.
The charged decays will be reconstructed by a magnetic spectrometer. To reconstruct the neutral decays, a good electro-magnetic calorimeter is needed.
Specs for the NA48 calorimeter
Main background : with missing
In order to reconstruct the
to 50 cm, and to 1 MeV we need:
Moreover in order to tag decays with the proton beam upstream
the target a time resolution < 0.5 ns is also needed.
The fiducial region of the calorimeter is contained between two circles of 300 and 2400 mm placed 100 m from the begin of the Kaon decay region. Choice for the NA48 calorimeter
The NA48 choice has been a quasi-homogeneous liquid krypton ionization chamber with tower structure read-out.