| Abstrakt: |
As part of the preparation of the TAIGA gamma ray observatory (Republic of Buryatia, Russian Federation) and the TUS space experiment on the Mikhailo Lomonosov satellite, 1400 PMTs of XP1911 type, 1020 PMTs of XP1911/UV type, and 290 PMTs of R1463 type were tested for their main and additional specifications (nominal (operating) voltage, dark current at nominal voltage, quantum efficiency of the photocathode at a wavelength of 480 nm, cathode chamber resistivity, and quality parameters of the dynode system). The number of PMTs that did not meet the selection criteria is 3.9% for XP1911, 15.8% for XP1911/UV, and 4.8% for R1463 of the corresponding number of PMTs of this type. The parameters of 856 PMTs of XP1911/UV type, which successfully passed the selection criteria and turned out to be ready for use in the TAIGA experiment, were compared with the corresponding parameters of the new 1250 PMTs of R7877 type (Hamamatsu) previously measured for the ATLAS hadron scintillation calorimeter at the LHC (CERN, Geneva, Switzerland). [ABSTRACT FROM AUTHOR] |
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