Three-target Vacuum Tube Performance and Specification:
Tube structure
All-glass double deck co-axial structure
Glass material
High borosilicate 3.3 glass
Outer tube diameter and glass thickness
Ø58±0.7mm;Glass thickness 1.6±0.15mm
Inner tube diameter and glass thickness
Ø47±0.7mm;Glass thickness 1.6±0.15mm
Tube dimension
58*1800mm
Absorption
coating
property
Coating material
CU/SS-ALN(H)/SS-ALN(L)/ALN
Sediment method
Three Target magnetron sputtering plating
Absorptivity
α=0.92～0.96(AM1.5)
Emission ratio
Emission:ε=0.04～0.06(80℃±5℃)
Vacuum degree
P≤5.0X10-3(PA)
Stagnation temperature
(temperature inside of empty evacuated tubes)
260～300℃
Average heat loss
ULT 0.4～0.6 W/(m2 *℃)
Hail resistance
Ø25mm