Baseline design of GLD

GLD baseline design as of March 8th, 2006

(Vertex detector and silicon inner trackers are not shown here.)

Parameters of the baseline design

Trackers

R (cm) Z (cm) cosθ t (μm) Resolution
VTX 2.0 6.5 0.9558 80 5 μm pixel
σ=2 μm
2.2 6.5 0.9472
3.2 10.0 0.9524
3.4 10.0 0.9468
4.8 10.0 0.9015
5.0 10.0 0.8944
4.0-5.8 12.0 0.9003-0.9487
4.0-5.8 12.2 0.9031-0.9502
BIT 9.0 18.5 0.8992 560 R-φ: 50μm strip pitch, σ=10μm
Z: 100μm strip pitch, σ=50μm
16.0 33.0 0.8998
23.0 47.5 0.9000
30.0 62.0 0.9002
FIT 2.4-7.6 15.5 0.8979-0.9882 560 σ=25μm
3.2-14.0 29.0 0.9006-0.9940
3.7-21.0 43.5 0.9006-0.9964
4.7-28.0 58.0 0.9006-0.9967
5.7-38.0 72.5 0.8857-0.9969
6.6-38.0 87.0 0.9164-0.9971
7.6-38.0 101.5 0.9365-0.9972
ET 45.0-205.0 270.0 0.7964-0.9864 560 σ=25μm
274.0 0.8007-0.9868
278.0 0.8048-0.9872
TPC 45.0-200.0 230.0 0.7546 (full) σ:r-φ=50-150μm
σ:z=0.5 mm
0.9814 (min)

Calorimeters

R (m) Z (m) Structure X0 λ
ECAL 2.1-2.3
0.4-2.3
2.8
2.8-3.0
W/Scinti./gap
3/2/1(mm)x33 layers
26 1.0
HCAL 2.3-3.5
0.4-3.5
3.0
3.0-4.2
Pb/Scinti./gap
20/5/1(mm)x46 layers
165 5.7
FCAL (0.08-0.36) (2.3-2.85) W/Si
BCAL 0.02-0.36 4.3-4.5 W/Si or W/Diamond

Last update: April 14, 2006