Talk's slides(571 KB)
Ferrara University and INFN
Ferrara, I 44100, Italy
for the NA48 Collaboration:
Cagliari, Cambridge, CERN, Dubna, Edinburgh, Ferrara, Firenze, Mainz, Orsay, Perugia, Pisa, Saclay, Siegen, Torino, Vienna, Warsaw.
The NA48 experiment at the CERN SPS is the latest of a series of experiments
devoted to the measurement of direct CP violation in neutral Kaon decays,
by comparing the and decay rates in and
Two neutral pions final states are reconstructed using a quasi-homogeneous liquid Krypton electro-magnetic calorimeter with a 13500-channel tower read-out structure. The detector has a high rate capability and large dynamic range. It combines excellent energy, position and time resolution with good uniformity in the response and precise charge calibration with a long term stability.
The main characteristics of the detector are discussed in detail with the experience gained in calibration, uniformity and stability checks. Preliminary results from the 1997 run with the full scale 24 tons LKr detector are presented, in comparison with the expectation from the prototype performance.