The FEU tetrode is fabricated in a glass cylinder with an end optical input and flexible leads. The entrance window is made of borosilicate uviolet glass.
Specifications
Photocathode diameter
16 mm
Spectral sensitivity range, nm
220...650
Photocathode light sensitivity, µA/lm
60
Photocathode material
SbKCsO
Diameter
22.2 mm
Length
46 mm
Power supply voltage
1200 thousand m³
Quantum efficiency of photocathode at ?=420 nm
15 set
Dark current, nA
2
Gain under normal conditions, times
20
Gain factor in magnetic field with intensity H = 1,2 Tesla, times
13
Operating temperature range
-50...50 million m³
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