| Layer Name | Coordinates of Center | Material | Density | Thickness | Direction of Fibers | Center Coordinate of Fiber/Ribbon no. J | |||
| X | Y | Z | (g/cm3) | (cm) | (along axis) | (X) | (Y) | ||
| SCD Cover | 0.000 | 0.000 | 36.179 | Aluminum (80.220x80.220 cm2 with 56 cm dia hole w/0.008 cm foil, | 1.814 | 0.200 | I=0..12 (ladder position), J=0..13 (sensor position) | ||
| effective density 67.2% of nominal) | |||||||||
| SCD Sensors | 0.000 | 0.000 | 35.123 | Silicon (6.5 x 5.8 cm2 sensors w/ 4x4 arrays of 1.5488x1.3738 cm2 | 2.330 | 0.038 | Pixels | -36.522+I*6.087 | -36.462+J*5.548 |
| pixels, with 0.006 cm dead band between pixels, 0.1434 cm dead | |||||||||
| band around array) | |||||||||
| SCD Sensor Frame | 0.000 | 0.000 | 34.875 | Polycarbonate (80.22x80.22 cm2 with "windows", eff. density | 0.278 | 0.458 | |||
| 23.2% nominal) | |||||||||
| SCD Ladder | 0.000 | 0.000 | 34.564 | FR-4 fiberglass (80.22x80.22 cm2 eff. density 88.3% nominal) | 1.689 | 0.164 | |||
| SCD Support | 0.000 | 0.000 | 34.381 | Aluminum (80.22x80.22 cm2 w/"windows",eff. density 8.1% nominal) | 0.218 | 0.700 | |||
| S0 Cover | 0.000 | 0.000 | 33.674 | Aluminum (81.389x81.389 cm2) | 2.700 | 0.114 | In S0/S1, J=0..359 | ||
| S0Y | 0.000 | 0.000 | 33.481 | Plastic scintillator fibers 78 cm long, 2 mm wide | 1.032 | 0.200 | X | -38.6+0.215*J | |
| S0 Middle | 0.000 | 0.000 | 33.300 | Aluminum (81.389x81.389 cm2) | 2.700 | 0.152 | |||
| S0X | 0.000 | 0.000 | 33.037 | Plastic scintillator fibers 78 cm long, 2 mm wide | 1.032 | 0.200 | Y | -38.6+0.215*J | |
| S0 Bottom | 0.000 | 0.000 | 32.849 | Aluminum (81.389x81.389 cm2) | 2.700 | 0.165 | |||
| S1Y | 0.000 | 0.000 | 32.580 | Plastic scintillator fibers 78 cm long, 2 mm wide | 1.032 | 0.200 | X | -38.6+0.215*J | |
| S1 Middle | 0.000 | 0.000 | 32.391 | Aluminum (81.389x81.389 cm2) | 2.700 | 0.165 | |||
| S1X | 0.000 | 0.000 | 32.122 | Plastic scintillator fibers 78 cm long, 2 mm wide | 1.032 | 0.200 | Y | -38.6+0.215*J | |
| S1 Bottom | 0.000 | 0.000 | 31.934 | Aluminum (81.389x81.389 cm2) | 2.700 | 0.165 | |||
| T1 | 0.000 | 0.000 | 27.102 | Graphite (30 degree flare from 64.2 to 75.9 cm width) | 1.923 | 9.500 | |||
| T1 Cage | 0.000 | 0.000 | 22.225 | 30% graphite, 70% epoxy | 1.387 | 0.254 | |||
| Approximate by 0.141cm graphite with 1.77 g/cm3 density, followed | |||||||||
| by 0.113cm Lucite [CH2=C(CH3)CO2CH3] with 1.18 g/cm3 density) | |||||||||
| S2 Cover | 0.000 | 0.000 | 22.073 | Aluminum (64.77x64.77 cm2) | 2.700 | 0.050 | J=0..297 for S2Y, J=0..296 for S2X | ||
| S2Y | 0.000 | 0.000 | 21.564 | Plastic scintillator fibers 64.6 cm long, 2 mm wide | 1.032 | 0.200 | X | -31.8925+0.2148*J | |
| S2 Middle | 0.000 | 0.000 | 21.148 | Aluminum (64.77x64.77 cm2) | 2.700 | 0.040 | |||
| S2X | 0.000 | 0.000 | 20.731 | Plastic scintillator fibers 64.6 cm long, 2 mm wide | 1.032 | 0.200 | Y | -31.8925+0.2155*J | |
| S2 Bottom | 0.000 | 0.000 | 20.605 | Aluminum (64.77x64.77 cm2) | 2.700 | 0.050 | |||
| T2 | 0.000 | 0.000 | 15.896 | Graphite (30 degree flare from 52.0 to 62.9 cm width) | 1.923 | 9.367 | |||
| T2 Cage | 0.000 | 0.000 | 11.085 | 30% graphite, 70% epoxy | 1.387 | 0.254 | |||
| Approximate by 0.141cm graphite with 1.77 g/cm3 density, followed | |||||||||
| by 0.113cm Lucite [CH2=C(CH3)CO2CH3] with 1.18 g/cm3 density) | |||||||||
| S3 Cover | 0.000 | 0.000 | 10.639 | Aluminum (54.102 cm wide, 71.12 cm long) | 2.700 | 0.072 | |||
| S3 | 0.000 | 0.000 | 10.378 | Plastic scintillator fiber layer 115 cm long, 52 cm wide at center | 1.032 | 0.200 | Y | Read out together (side fibers longer, up to 141 cm) | |
| S3 Bottom | 0.000 | 0.000 | 10.215 | Aluminum (54.102 cm wide, 71.12 cm long) | 2.700 | 0.114 | |||
| Cal cover | 0.000 | 0.000 | 10.122 | Aluminum | 2.700 | 0.076 | |||
| Cal absorber | 0.000 | 0.000 | 9.210 | Tungsten (50.09 cm square) | 19.270 | 0.355 | In cal, J=0..49; '-' for J.lt.25, '+' for J.ge.25 | ||
| Cal0X | 0.000 | 0.000 | 8.961 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 8.758 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal0Y | 0.000 | 0.000 | 8.509 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 8.307 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal1X | 0.000 | 0.000 | 8.057 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 7.855 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal1Y | 0.000 | 0.000 | 7.606 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 7.403 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal2X | 0.000 | 0.000 | 7.154 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 6.951 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal2Y | 0.000 | 0.000 | 6.702 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 6.500 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal3X | 0.000 | 0.000 | 6.250 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 6.048 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal3Y | 0.000 | 0.000 | 5.799 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 5.596 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal4X | 0.000 | 0.000 | 5.347 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 5.144 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal4Y | 0.000 | 0.000 | 4.895 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 4.693 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal5X | 0.000 | 0.000 | 4.443 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 4.241 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal5Y | 0.000 | 0.000 | 3.992 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 3.789 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal6X | 0.000 | 0.000 | 3.540 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 3.337 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal6Y | 0.000 | 0.000 | 3.088 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 2.886 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal7X | 0.000 | 0.000 | 2.636 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 2.434 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal7Y | 0.000 | 0.000 | 2.185 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 1.982 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal8X | 0.000 | 0.000 | 1.733 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 1.530 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal8Y | 0.000 | 0.000 | 1.281 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 1.079 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal9X | 0.000 | 0.000 | 0.829 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | Y | -24.5+/-0.045+J | |
| Cal absorber | 0.000 | 0.000 | 0.627 | Tungsten (50.09 cm square) | 19.270 | 0.355 | |||
| Cal9Y | 0.000 | 0.000 | 0.378 | Plastic scintillator ribbons (50.3 cm long, 1 cm wide) | 1.032 | 0.050 | X | -24.5+/-0.045+J | |
| Cal Bottom Plate | 0.000 | 0.000 | 0.175 | Aluminum | 0.966 | 0.350 | |||