The NA48 liquid krypton prototype calorimeter

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Abstract

The NA48 experiment for a precision measurement of the CP violation parameter ϵ′ϵin K0 → 2 π decays will require a fast electromagnetic calorimeter with excellent energy and time resolution. A quasi homogeneous calorimeter using liquid krypton and a fast readout with 40 MHz FADCs is proposed. A prototype with 400 kg of liquid krypton was built and tested in an electron beam. Results for the energy, space and time resolution of this prototype are given.

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1

Perament address: SLAC, Stanford CA, USA.

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