The beam and detector, used for the NA48 experiment, devoted to the measurement of Re(epsilon'/epsilon) and for the NA48/1 experiment on rare KS and neutral hyperon decays, are described
Ultrafiltration of skim milk was carried out on a pilot‐plant apparatus using tubular cellulose acetate membranes at 5°C temperature, 30 psig operating pressure and 1.5 m/set flow velocity. The purpose of the study was the optimization of a dilution‐ultrafiltration process to obtain milk protein concentrates having 60, 70, 80 and 90% of proteins on a dry basis. During the experiment the complete retention of the protein fraction was accompanied by low retention of smaller solutes: 13% for lactose, 20% for Na and K ions, 10% for nonprotein nitrogen. The high retention of Ca (greater than 85%) is due to the binding of this ion to the casein molecule and to colloidal inorganic salts. The calculated optimum process results in the shortest processing time when the milk protein content is increased to 5% in an ultrafiltration step, followed by a second step in which simultaneous ultrafiltration and water dilution of the milk are carried out at constant volume until the desired level of purification is attained.
In a preliminary version of the NA48 experiment at the CERN SPS, in which an iron-scintillator sandwich calorimeter was used as a photon detector, the ra- where the rst error is statistical and the second systematic. The result is in agreement with theoretical predictions.3
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