This is the baseline for the Compact Detector Concept modelled as of July 31, 2005, to be used for detector studies at Snowmass.
This version uses the same tracker as the Silicon Detector see sidaug05. The calorimetry has been modified to make the overall
design more compact. The compact description of this detector in xml format can be found at http://www.lcsim.org/detectors/cdcaug05.zip
.
What follows is a plain text description of the file compact.xml found in this zip file.
Calorimeters:
Electromagnetic Calorimeter:
The inner radius for the barrel is 127cm. The aspect ratio is set to cos(theta)=0.8, meaning the inner z of the endcap EM calorimeter is at z of 168cm.
The EM calorimeter is a Tungsten/Silicon sampling calorimeter.
It is composed of 20 layers of
| material |
thickness |
| Tungsten |
.250cm |
| G10 |
.068cm |
| Silicon |
.032cm |
| Air |
.025cm |
followed by 10 layers of
| material |
thickness |
| Tungsten |
.50cm |
| G10 |
.068cm |
| Silicon |
.032cm |
| Air |
.025cm |
The endcap plug sits inside the barrel cylinder, so the barrel z extent is +/- 182.0cm.
The endcap starts at an inner radius of 26cm and extends out to 126.5cm.
Hadron calorimeter:
The hadron calorimeter is a Tungsten/Scintillator sampling calorimeter.
It is composed of 50 layers of
| material |
thickness |
| Tungsten |
0.75cm |
| Polystyrene |
0.50cm |
| G10 |
0.25cm |
It begins immediately outside of the EM calorimeters, with the endcap plug sitting inside the barrel.
The barrel inner radius is 141.0 with a z extent of +/- 257cm.
The endcap extends from an inner radius of 26.0 cm to an outer radius of 140.75, inner z of 182.0
Solenoid:
The solenoid is modelled as a cylinder with an inner radius of 230cm. This is larger than the outer radius of the hadron calorimeter since we will not be building a cylindrical detector, but a polygonal one (current thinking is octagonal). The barrel composition is as follows:
| material |
thickness |
z |
| Steel |
6.0cm |
271.0cm |
| Air |
8.5cm |
271.0cm |
| Aluminum |
39.3cm |
262.5cm |
| Steel |
6.0cm |
262.5cm |
| Air |
20.0cm |
271.0cm |
| Steel |
3.0cm |
271.0cm |
This is capped with disk endplates of 6cm steel from r=250cm to 312.8cm
Muon System:
The muon system is implemented as a Steel/RPC sampling calorimeter,
where the solenoidal flux return is instrumented.
It is composed of 48 layers of:
| material |
thickness |
| Iron |
5.0cm |
| G10 |
0.3cm |
| PyrexGlass |
0.11cm |
| RPCGas |
0.12cm |
| PyrexGlass |
0.11cm |
| Air |
0.86cm |
The barrel inner radius is 320.0cm with z extent of +/- 257cm.
The endcap sits outside the barrel at an inner z of 257.5cm and radius from 26.0cm to 632.0cm
The field is solenoidal, constant 5 Tesla along z up to half the coil thickness and -0.6 outside.
