CLIC01_ILD

This is an overview over what is in the simulation. Some parameters can be found in this table: Clic01Numbers

Note: Typos do happen, if something looks wrong it could very well be wrong.

Sub Detectors

Vertex Detector

The geometry of the vertex detector and the forward tracking disks is being studied by WG3.

The barrels are composed of 50 micron thick sensitive silicon, with the following inner radii and |z| extents: The silicon is placed inside the given radius. Outside the silicon a 134 micron thick support and electronics layer is placed. The ILD Vertex Detector consists of three double layers, each layer is made out of several ladders.

Layer Inner Radius z Extent Number of Ladders Ladder width
1 31.000 mm 125.0 mm 18 11.5 mm
2 32.866 mm 125.0 mm 18 11.5 mm
3 44.000 mm 125.0 mm 13 22.5 mm
4 45.866 mm 125.0 mm 13 22.5 mm
5 58.000 mm 125.0 mm 17 22.5 mm
6 59.866 mm 125.0 mm 17 22.5 mm

Forward Tracking Disks

Disk Inner Radius Outer Radius z Position Silicon Thickness
1 45.00 mm 164 mm 220.000 mm 0.025 mm
2 55.2322 mm 164 mm 371.309 mm 0.025 mm
3 74.9716 mm 308 mm 644.906 mm 0.025 mm
4 103.99 mm 309 mm 1046.12 mm 0.275 mm
5 132.946 mm 309 mm 1447.33 mm 0.275 mm
6 161.892 mm 309 mm 1848.54 mm 0.275 mm
7 190.857 mm 309 mm 2250.00 mm 0.275 mm

Silicon Inner Tracker

Layer Radius z Extent Silicon Thickness
1 165 mm 371.309 mm 0.275 mm
2 309 mm 644.906 mm 0.275 mm

TPC

Inner Radius Outer Radius z Extent
329 mm 1808 mm 2247.5 mm

Silicon External Tracker

Layer Radius z Extent Silicon Thickness
1 1833 mm 2350 mm 0.275 mm
2 1835 mm 2350 mm 0.275 mm

Endcap Tracking Disks

Layer Inner Radius Outer Radius z Extent Silicon Thickness
1 419.264 mm 1822.7 mm 2426 mm 0.275 mm
2 419.264 mm 1822.7 mm 2428 mm 0.275 mm
3 419.264 mm 1822.7 mm 2430 mm 0.275 mm

ECal

Barrel

Inner Radius Outer Radius z Extent
1847.4 mm mm 2350 mm

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
19 5.25 mm 2.1 mm 5.083 mm
1 6.30 mm 2.1 mm 5.083 mm
9 7.35 mm 4.2 mm 5.083 mm

Endcap

Inner Radius Outer Radius Inner Z Outer Z
400 mm 2088.8 mm 2450 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
19 5.25 mm 2.1 mm 5.083 mm
1 6.30 mm 2.1 mm 5.083 mm
9 7.35 mm 4.2 mm 5.083 mm

Plug

The ECal Plug is placed at the inner radius of the Ecal endcap and bridges the gap between the LumiCal and the rest of the Ecal endcap.

Inner Radius Outer Radius Inner Z Outer Z
250 mm 400 mm 2450 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
19 5.25 mm 2.1 mm 5.083 mm
1 6.30 mm 2.1 mm 5.083 mm
9 7.35 mm 4.2 mm 5.083 mm

HCal

Barrel

Inner Radius Outer Radius z Extent
2058 mm mm 2350 mm

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
77 16.5 mm 10.0 mm 30.0 mm

Endcap

Note that in the current simulation the HCal endcap is also made with tungsten absorbers. This will probably be changed to iron/steel absorbers.
Inner Radius Outer Radius Inner Z Outer Z
350 mm 3089.0 mm 2650 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
77 16.5 mm 10.0 mm 30.0 mm

Ring

The Hcal ring is positioned like a ring around the Ecal endcap and complements the coverage of the Hcal.

Inner Radius Outer Radius Inner Z Outer Z
2138.8 mm 3089.0 mm 2450 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
10 16.5 mm 10.0 mm 30.0 mm

Coil

A 4 tesla solenoid field is used in the simulation. For the very forward region studies a field map (without (anti)DID) can be used as well. The parameters given below include the size of the cryostat.
Inner Radius Outer Radius z Extent
3438.5 mm 4188.5 mm 3872 mm

Muon Yoke

Barrel

Inner Radius Outer Radius z Extent
4438.5 mm mm 4047 mm

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
10 140 mm 100 mm 30.0 mm
1 1150 mm 1110 mm 30.0 mm

Endcap

Inner Radius Outer Radius Inner Z Outer Z
300 mm 6988.5 mm 4072 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness cellSize
10 140 mm 100 mm 30.0 mm
1 1150 mm 1110 mm 30.0 mm

LumiCal

Inner Radius Outer Radius Inner Z Outer Z
100 mm 195.2 mm 2464.2 mm  

Layers
Number of Layers Layer Thickness Absorber Thickness
40 4.27 mm 3.5 mm

BeamCal

Inner Radius Outer Radius Inner Z Outer Z
32 mm 150 mm 2.9 m 3.06032 m

Layers
Number of Layers Layer Thickness Absorber Thickness
40 4.0008 mm 3.5 mm

BeamPipe

Needs to be updated for correct BeamCal position:

crossType zStart zEnd rInnerStart rInnerEnd rOuterStart rOuterEnd material Comments
0 0 230 29.5 29.5 30 30 beryllium
0 230 2400 29.5 183 30 184 beryllium Connical Section towards LumiCal
0 2400 2449 183 183 184 184 beryllium This is a cylinder connecting the cone up to LumiCal with the flat plane directly infront of LumiCal
2 2449 2450 0 100 184 184 beryllium Flat plane directly in front of LumiCal
2 2450 3169 99 99 100 100 iron Beampipe inside the LumiCal up until BeamCal
2 3169 3170 2.7 34 79.5 79.5 iron The "endcap" of the beampipe in front of BeamCal with two holes for incomming and outgoing beampipe, aligned on the outgoing beam axis. rInner is the size of the holes inside the endcap, 2.7 for incoming, 34 for outgoing
2 3170 3496 34 34 35 35 iron
1 3170 4000 2.7 2.7 3.7 3.7 iron Wall thickness and actual diameter might be slightly larger corresponding to the apperture of QD0
2 3500 4000 34 39 35 40 iron Goes on with 10 mrad opening towards post collision (as long as possible.)

Crosstype: Crosstype refers to the axis the part of the beampipe is aligned to

  • 0 Beampipe aligned on detector symmetry axis
  • 1 Beampipe aligned on incomming beam axis
  • 2 Beampipe aligned on outgoing beam axis

Computing Details

Most of this is obsolete with the newer Mokka versions

  • 4 Tesla Solenoid Field, corresponding to the ILD (down from 5 Tesla for CILD00)
  • The HCal Radiator(absorber) Material is now TungstenDens24, (same as for the CLID_01_SiD), with 1cm Thickness and 77 layers
  • NB: The increase in layers needs a small change in the Mokka sourcecode: in source/Geometry/Tesla/include/SD.hh "#define MAX_LAYERS 64" has to be set to something larger than 76
  • To use other materials than iron or WMod as the absorber, changes have to be made to source/Geometry/LDC/src/SHcalSc02.cc after "// Set up the Radiator Material to be used"
  else if(Hcal_radiator_material == "TungstenDens24")
    RadiatorMaterial =  CGAGeometryManager::GetMaterial("TungstenDens24");
The Material also has to be present in the Database.

-- AndreSailer - 24 June, 2010

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Topic revision: r8 - 2011-02-23 - ChristianGrefe
 
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