A METHOD FOR CALIBRATION AND TEST OF THE TIME-OF-FLIGHT DETECTORS FOR DELPHI

被引:6
作者
BENLLOCH, JM [1 ]
CASTILLO, MV [1 ]
FERRER, A [1 ]
FUSTER, J [1 ]
HIGON, E [1 ]
LOZANO, J [1 ]
SALT, J [1 ]
SANCHEZ, E [1 ]
SANCHIS, E [1 ]
CUEVAS, J [1 ]
机构
[1] UNIV CANTABRIA,DEPT FIS MODERNA,SANTANDER,SPAIN
关键词
D O I
10.1016/0168-9002(90)90387-L
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We describe a method for calibration and test of large-area TOF counters using cosmic radiation. We applied the method to the time-of-flight system of the DELPHI detector at the LEP e+e- storage ring, made of scintillation (NE110) counters (20 × 350 cm2). The photomultipliers used (EMI 9902KB) reach an average gain of 5×108 at 1700 V and the time resolution achieved is 1.2 ns. Using this method we measured the counter efficiencies as a function of the position; we obtained 135 cm for the effective attenuation length and 40 photoelectrons for a minimum-ionizing particle crossing the center of the counter. © 1990.
引用
收藏
页码:319 / 328
页数:10
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