Comparison of the SVX II detector geometry with the present SVX'


Detector ParameterSVX'SVXII
Readout coordinatesr-phir-phi; r-z
Number of barrels23
Total length (cm)51v87
Ladder/barrel length (cm)25.529
Length readout (r-phi) (cm)25.514.5
Number of layers per barrel4v5
Number of phi-sectors per barrel1212
Radius innermost layer (cm)3.02.45
Radius outermost layer (cm)7.810.6
r-phi pitch (inner to outer) (mm)60; 60; 60; 5560; 62; 60; 60; 65
r-z readout angle (deg)90; 90; +1.2; 90; -1.2
r-z pitch (mm)141; 125.5; 60; 141; 65
Number of r-phi chips/ladder2; 3; 4; 64; 6; 10; 12; 14
Number of r-z chips/ladder4; 6; 10; 8; 14
Number of r-phi channels46,080211,968
Number of r-z channels193,536
A more nicely formatted postscript version of this table