Author/Authors :
Barnyakov، نويسنده , , A.Yu. and Barnyakov، نويسنده , , M.Yu. and Beloborodov، نويسنده , , K.I. and Bobrovnikov، نويسنده , , V.S. and Buzykaev، نويسنده , , A.R. and Danilyuk، نويسنده , , A.F. and Golubev، نويسنده , , V.B. and Kirillov، نويسنده , , V.L. and Kononov، نويسنده , , S.A. and Kravchenko، نويسنده , , E.A. and Onuchin، نويسنده , , A.P. and Martin، نويسنده , , K.A. and Serednyakov، نويسنده , , S.I. and Vesenev، نويسنده , , V.M.، نويسنده ,
Abstract :
The paper is devoted to the cosmic tests of particle identification system for the SND detector at VEPP-2000. The goal of the tests is to measure main parameters of the system: average signal for the relativistic particles, nonuniformity of the light collection, and time resolution. The measurements of the average signal were done in five points of the counter. The obtained value of the signal is about 10 photoelectrons. The time resolution is about 2 ns. The time dependence of the average amplitude was measured also. It was shown that average amplitude of the signal decreases with characteristic time of about two years. The cause of the signal decrease is discussed.
Keywords :
Time resolution , Cosmic tests , Particle identification , aerogel
