Type GDB-110 large area, fast response photomultiplier

The model GDB-110 photomultiplier is a tube with an hyperbolic terminal window and a semitransparent bialkali photocathode. The effective cathode diameter is 110 mm; borosilicate glass is used for the window. The optical spectral region is 320 to 650 nm. the photomultiplier has high detection efficiency, high response speed, and large increments. The voltage divider of model GDB-110 is designed to meet performance and use requirements; it includes model A and B voltage dividers as is shown. During detection, whether scintillation or Cerenkov radiation, the radiation intensity is very low. Therefore, only by increasing the photocathode area can the collection efficieny be improved. The model GDB-110 is adaptable to the above-mentioned situation. The outside dimensions of the photomultiplier, the relationship between anode luminosity sensitivity and operating voltage, and between time and voltage, single electron spectrum and noise spectrum; and the relationship between the secondary emission coefficient and interpole voltage are shown.