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<?xml version="1.0" encoding="UTF-8"?>
<lccdd>
<comment>
---------------
Silicon Tracker
---------------
With some added info on ITS3 chip from
https://indico.bnl.gov/event/10677/contributions/45591/attachments/33204/53254/20210318-IR2%40EIC-SVT.pdf
To be used as standin until we get more detailed specs from the working group on the tracker.
Note: initial implementation with hard-coded values,
TODO: add parametrization
----
Aug 04, 2021, Shujie Li
udpated stave material budget for the baseline design.
see https://eicweb.phy.anl.gov/EIC/detectors/athena/-/issues/63
ITS3 sensor thickness: 40um, pixel size: 10um (segmentation)
total X0 0.55% per layer:
0.4 mm aluminum ~ 0.44% X0.
2 x carbonfiber (RL ~ 25) 0.1 mm to match Si (RL~9) of 0.04mm
<comment>
Layer_rOffset is used to add inside space so the _rmin value is the nominal sensor radius.
TrackerBarrelSpaceFrame_height must be smaller than {_rmin2 - _rmin1 - Layer_rOffset - 1mm - stave_thickness}
<constant name="TrackerBarrelLayer_rOffset" value="0.5*cm"/>
<constant name="TrackerBarrelSpaceFrame_width" value="4.0*cm"/>
<constant name="TrackerBarrelSpaceFrame_height" value="1.0835*cm"/>
<constant name="TrackerSensor_thickness" value="0.04*mm"/>
<constant name="TrackerBarrelInner_rmin1" value="21.0*cm"/>
<constant name="TrackerBarrelInner_rmin2" value="22.68*cm"/>
<constant name="TrackerBarrelInner_length1" value="54.0*cm"/>
<constant name="TrackerBarrelInner_length2" value="60.0*cm"/>
<constant name="TrackerBarrelOuter_rmin1" value="39.3*cm"/>
<constant name="TrackerBarrelOuter_rmin2" value="43.23*cm"/>
<constant name="TrackerBarrelOuter_length1" value="105.0*cm"/>
<constant name="TrackerBarrelOuter_length2" value="114.0*cm"/>
<constant name="TrackerBarrelInner_thickness" value="TrackerBarrelInner_rmin2 - TrackerBarrelInner_rmin1"/>
<constant name="TrackerBarrelOuter_thickness" value="TrackerBarrelOuter_rmin2 - TrackerBarrelOuter_rmin1"/>
<constant name="TrackerBarrelInner_length" value="TrackerBarrelInner_length2+1.0*cm"/>
<constant name="TrackerBarrelOuter_length" value="TrackerBarrelOuter_length2+1.0*cm"/>
<comment>
Here we are assuming the two endcaps (P and N) are symmetric.
</comment>
<!-- <constant name="TrackerEndcap_thickness" value="0.24/100*9.37*cm"/> -->
<!-- <constant name="TrackerEndcapService_thickness" value="TrackerEndcap_thickness-TrackerSensor_thickness"/> -->
<constant name="TrackerEndcapInner_nLayers" value="1"/>
<constant name="TrackerEndcapOuter_nLayers" value="3"/>
<constant name="TrackerEndcapInner_zmin" value="TrackerBarrelInner_length/2.0"/>
<constant name="TrackerEndcapInner_zmax" value="TrackerBarrelOuter_length/2.0"/>
<constant name="TrackerEndcapInner_length" value="TrackerEndcapInner_zmax- TrackerEndcapInner_zmin"/>
<constant name="TrackerEndcapInnerLayer_dz" value="TrackerEndcapInner_length/TrackerEndcapInner_nLayers"/>
<constant name="TrackerEndcapInnerLayer_thickness" value="TrackerEndcapInnerLayer_dz - 0.5*cm"/>
<comment> Note, the -1.0*cm is so the layers do not touch surfaces.
This is a limitation of ACTS geometry which will likely go away in the future.</comment>
<constant name="TrackerEndcapOuter_zmin" value="TrackerBarrelOuter_length/2.0"/>
<constant name="TrackerEndcapOuter_zmax" value="TrackerEndcapOuter_zmin + 70"/>
<constant name="TrackerEndcapOuter_length" value="TrackerEndcapOuter_zmax- TrackerEndcapOuter_zmin"/>
<constant name="TrackerEndcapOuterLayer_dz" value="TrackerEndcapOuter_length/TrackerEndcapOuter_nLayers"/>
<constant name="TrackerEndcapOuterLayer_thickness" value="TrackerEndcapOuterLayer_dz - 1.0*cm"/>
<comment> Note, the -1.0*cm is so the layers do not touch surfaces.
This is a limitation of ACTS geometry which will likely go away in the future.</comment>
<constant name="TrackerEndcapInner_rmin1" value="Beampipe_rmax+1.0*cm"/>
<!-- <constant name="TrackerEndcapInner_rmin2" value="Beampipe_rmax+1.0*cm"/> -->
<constant name="TrackerEndcapOuter_rmin1" value="3.18*cm + 1.2*cm * 1"/>
<constant name="TrackerEndcapOuter_rmin2" value="3.18*cm + 1.2*cm * 1"/>
<constant name="TrackerEndcapOuter_rmin3" value="3.18*cm + 1.2*cm * 2"/>
<constant name="TrackerEndcapInner_rmax1" value="TrackerBarrelOuter_rmin1-5.0*mm"/>
<!-- <constant name="TrackerEndcapInner_rmax2" value="TrackerBarrelOuter_rmin1-5.0*mm"/> -->
<constant name="TrackerEndcapOuter_rmax1" value="43.23*cm"/>
<constant name="TrackerEndcapOuter_rmax2" value="43.23*cm"/>
<constant name="TrackerEndcapOuter_rmax3" value="43.23*cm"/>
<comment> TODO: These should be computed </comment>
<constant name="TrackerBarrelInner_NModules" value="30"/>
<constant name="TrackerBarrelOuter_NModules" value="56"/>
<constant name="TrackerEndcapInnerModOpeningAngle" value="30.0*degree"/>
<constant name="TrackerEndcapInnerMod1_x1" value="2.0*TrackerEndcapInner_rmin1*sin(TrackerEndcapInnerModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapInnerMod1_x2" value="2.0*TrackerEndcapInner_rmax1*sin(TrackerEndcapInnerModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapInnerMod1_y" value="TrackerEndcapInner_rmax1*cos(TrackerEndcapInnerModOpeningAngle/2.0) - TrackerEndcapInner_rmin1"/>
<constant name="TrackerEndcapOuterModOpeningAngle" value="30.0*degree"/>
<constant name="TrackerEndcapOuterMod1_x1" value="2.0*TrackerEndcapOuter_rmin1*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod1_x2" value="2.0*TrackerEndcapOuter_rmax1*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod1_y" value="TrackerEndcapOuter_rmax1*cos(TrackerEndcapOuterModOpeningAngle/2.0) - TrackerEndcapOuter_rmin1"/>
<constant name="TrackerEndcapOuterMod2_x1" value="2.0*TrackerEndcapOuter_rmin2*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod2_x2" value="2.0*TrackerEndcapOuter_rmax2*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod2_y" value="TrackerEndcapOuter_rmax2*cos(TrackerEndcapOuterModOpeningAngle/2.0) - TrackerEndcapOuter_rmin2"/>
<constant name="TrackerEndcapOuterMod3_x1" value="2.0*TrackerEndcapOuter_rmin3*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod3_x2" value="2.0*TrackerEndcapOuter_rmax3*sin(TrackerEndcapOuterModOpeningAngle/2.0)"/>
<constant name="TrackerEndcapOuterMod3_y" value="TrackerEndcapOuter_rmax3*cos(TrackerEndcapOuterModOpeningAngle/2.0) - TrackerEndcapOuter_rmin3"/>
</define>
<display>
</display>
<detectors>
<comment>
-----------------------------------
Inner Tracker Subassembly (group 1)
-----------------------------------
</comment>
id="TrackerBarrel_Inner_ID"
name="TrackerBarrel_Inner"
type="athena_TrackerBarrel"
readout="TrackerBarrelHits"
insideTrackingVolume="true">
<dimensions
rmin="TrackerBarrelInner_rmin1-TrackerBarrelLayer_rOffset"
rmax="TrackerBarrelInner_rmin2-TrackerBarrelLayer_rOffset + TrackerBarrelInner_thickness"
length="TrackerBarrelInner_length"/>
<comment>
Tracker Barrel Modules
</comment>
<module name="TrackerBarrelInner_Module1" vis="TrackerModuleVis">
<frame material="CarbonFiber_25percent" vis="TrackerSupportVis"
width="TrackerBarrelSpaceFrame_width"
height="TrackerBarrelSpaceFrame_height"
length="TrackerBarrelInner_length1"
<module_component name="aluminum1" material="Aluminum" sensitive="false"
width="TrackerBarrelSpaceFrame_width" length="TrackerBarrelInner_length1-4*mm" thickness="0.4*mm" />
<module_component name="silicon"
width="TrackerBarrelSpaceFrame_width"
length="TrackerBarrelInner_length1-5*mm" thickness="TrackerSensor_thickness" material="Silicon" sensitive="true">
<!--position z="-0.025*mm" y="0*mm"/-->
<module name="TrackerBarrelInner_Module2" vis="TrackerModuleVis">
<frame material="CarbonFiber_25percent" vis="TrackerSupportVis"
width="TrackerBarrelSpaceFrame_width"
height="TrackerBarrelSpaceFrame_height"
length="TrackerBarrelInner_length2"
thickness="0.1*mm" />
<module_component name="aluminum1" material="Aluminum" sensitive="false"
width="TrackerBarrelSpaceFrame_width" length="TrackerBarrelInner_length2-4*mm" thickness="0.4*mm" />
<module_component name="silicon"
width="TrackerBarrelSpaceFrame_width"
length="TrackerBarrelInner_length2-5*mm" thickness="TrackerSensor_thickness" material="Silicon" sensitive="true">
<!--position z="-0.025*mm" y="0*mm"/-->
</module_component>
</module>
<comment>
Tracker Barrel Inner Layers
</comment>
<layer module="TrackerBarrelInner_Module1" id="1" vis="TrackerLayerVis">
inner_r="TrackerBarrelInner_rmin1-TrackerBarrelLayer_rOffset"
outer_r="TrackerBarrelInner_rmin1-TrackerBarrelLayer_rOffset + TrackerBarrelInner_thickness-1.0*mm"
z_length="TrackerBarrelInner_length1"/>
<rphi_layout phi_tilt="10.0*degree" nphi="TrackerBarrelInner_NModules" phi0="0.0" rc="TrackerBarrelInner_rmin1" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
<layer module="TrackerBarrelInner_Module2" id="2" vis="TrackerLayerVis">
inner_r="TrackerBarrelInner_rmin2-TrackerBarrelLayer_rOffset"
outer_r="TrackerBarrelInner_rmin2-TrackerBarrelLayer_rOffset + TrackerBarrelInner_thickness"
z_length="TrackerBarrelInner_length2"/>
<rphi_layout phi_tilt="10.0*degree" nphi="TrackerBarrelInner_NModules" phi0="0.0" rc="TrackerBarrelInner_rmin2" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
</detector>
<detector
id="TrackerEndcapP_Inner_ID"
name="TrackerEndcapP_Inner"
type="athena_TrapEndcapTracker"
readout="TrackerEndcapHits"
vis="AnlRed"
reflect="false">
<module name="Module1" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapInnerMod1_x1/2.0" x2="TrackerEndcapInnerMod1_x2/2.0" z="TrackerEndcapInnerMod1_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<layer id="1">
<envelope vis="AnlRed"
rmin="TrackerEndcapInner_rmin1"
rmax="TrackerEndcapInner_rmax1"
length="TrackerEndcapInnerLayer_dz"
zstart="TrackerEndcapInner_zmin" />
<ring vis="AnlRed"
r="TrackerEndcapInner_rmin1+TrackerEndcapInnerMod1_y/2.0"
zstart="(50.0*mm)"
nmodules="12" dz="2.5 * mm" module="Module1" />
</layer>
</detector>
<detector
id="TrackerEndcapN_Inner_ID"
name="TrackerEndcapN_Inner"
type="athena_TrapEndcapTracker"
readout="TrackerEndcapHits"
vis="AnlRed"
reflect="true">
<module name="Module1" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapInnerMod1_x1/2.0" x2="TrackerEndcapInnerMod1_x2/2.0" z="TrackerEndcapInnerMod1_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<layer id="1">
<envelope vis="AnlRed"
rmin="TrackerEndcapInner_rmin1"
rmax="TrackerEndcapInner_rmax1"
length="TrackerEndcapInnerLayer_dz"
zstart="TrackerEndcapInner_zmin" />
<ring vis="AnlRed"
r="TrackerEndcapInner_rmin1+TrackerEndcapInnerMod1_y/2.0"
zstart="-(50.0*mm)"
nmodules="12" dz="2.5 * mm" module="Module1" />
-----------------------------------
Outer Tracker Subassembly (group 2)
-----------------------------------
id="TrackerBarrel_Outer_ID"
name="TrackerBarrel_Outer"
type="athena_TrackerBarrel"
readout="TrackerBarrelHits"
insideTrackingVolume="true">
<dimensions
rmin="TrackerBarrelOuter_rmin1-TrackerBarrelLayer_rOffset"
rmax="TrackerBarrelOuter_rmin2-TrackerBarrelLayer_rOffset + TrackerBarrelOuter_thickness"
length="TrackerBarrelOuter_length"/>
<comment>
Tracker Barrel Modules
</comment>
<module name="TrackerBarrelOuter_Module1" vis="PurpleVis">
<frame material="CarbonFiber_25percent" vis="BlueGreenVis"
width="TrackerBarrelSpaceFrame_width"
height="TrackerBarrelSpaceFrame_height"
length="TrackerBarrelOuter_length1"
<module_component name="aluminum1" material="Aluminum" sensitive="false"
width="TrackerBarrelSpaceFrame_width" length="TrackerBarrelOuter_length1-0.1*mm" thickness="0.40*mm" />
<module_component name="silicon"
width="TrackerBarrelSpaceFrame_width"
length="TrackerBarrelOuter_length1-0.1*mm"
thickness="TrackerSensor_thickness" material="Silicon" sensitive="true">
<module name="TrackerBarrelOuter_Module2" vis="PurpleVis">
<frame material="CarbonFiber_25percent" vis="BlueGreenVis"
width="TrackerBarrelSpaceFrame_width"
height="TrackerBarrelSpaceFrame_height"
length="TrackerBarrelOuter_length2"
thickness="0.1*mm" />
<module_component name="aluminum1" material="Aluminum" sensitive="false"
width="TrackerBarrelSpaceFrame_width" length="TrackerBarrelOuter_length2-0.1*mm" thickness="0.40*mm" />
<module_component name="silicon"
width="TrackerBarrelSpaceFrame_width"
length="TrackerBarrelOuter_length1-0.1*mm"
thickness="TrackerSensor_thickness" material="Silicon" sensitive="true">
<comment>
Tracker Barrel Inner Layers
</comment>
<layer module="TrackerBarrelOuter_Module1" id="1" vis="VertexVis">
inner_r="TrackerBarrelOuter_rmin1-TrackerBarrelLayer_rOffset"
outer_r="TrackerBarrelOuter_rmin1-TrackerBarrelLayer_rOffset + TrackerBarrelOuter_thickness-1.0*mm"
<rphi_layout phi_tilt="10.0*degree" nphi="TrackerBarrelOuter_NModules" phi0="0.0" rc="TrackerBarrelOuter_rmin1" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
<layer module="TrackerBarrelOuter_Module2" id="2" vis="VertexVis">
inner_r="TrackerBarrelOuter_rmin2-TrackerBarrelLayer_rOffset"
outer_r="TrackerBarrelOuter_rmin2-TrackerBarrelLayer_rOffset + TrackerBarrelOuter_thickness"
<rphi_layout phi_tilt="10.0*degree" nphi="TrackerBarrelOuter_NModules" phi0="0.0" rc="TrackerBarrelOuter_rmin2" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
</detector>
<detector
id="TrackerEndcapP_Outer_ID"
name="TrackerEndcapP_Outer"
type="athena_TrapEndcapTracker"
readout="TrackerEndcapHits"
vis="AnlRed"
reflect="false">
<module name="Module1" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod1_x1/2.0" x2="TrackerEndcapOuterMod1_x2/2.0" z="TrackerEndcapOuterMod1_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<module name="Module2" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod2_x1/2.0" x2="TrackerEndcapOuterMod2_x2/2.0" z="TrackerEndcapOuterMod2_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<module name="Module3" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod3_x1/2.0" x2="TrackerEndcapOuterMod3_x2/2.0" z="TrackerEndcapOuterMod3_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<layer id="1">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin1"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin1+TrackerEndcapOuterMod1_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module1" />
</layer>
<layer id="2">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin2"
rmax="TrackerEndcapOuter_rmax2"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin + TrackerEndcapOuterLayer_dz" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin2+TrackerEndcapOuterMod2_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module2" />
</layer>
<layer id="3">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin3"
rmax="TrackerEndcapOuter_rmax3"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin + 2 * TrackerEndcapOuterLayer_dz" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin3+TrackerEndcapOuterMod3_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module3" />
</layer>
</detector>
<detector
id="TrackerEndcapN_Outer_ID"
name="TrackerEndcapN_Outer"
type="athena_TrapEndcapTracker"
readout="TrackerEndcapHits"
vis="AnlRed"
reflect="true">
<module name="Module1" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod1_x1/2.0" x2="TrackerEndcapOuterMod1_x2/2.0" z="TrackerEndcapOuterMod1_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<module name="Module2" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod2_x1/2.0" x2="TrackerEndcapOuterMod2_x2/2.0" z="TrackerEndcapOuterMod2_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<module name="Module3" vis="AnlProcess_Blue">
<trd x1="TrackerEndcapOuterMod3_x1/2.0" x2="TrackerEndcapOuterMod3_x2/2.0" z="TrackerEndcapOuterMod3_y/2"/>
<module_component thickness="ITS3Thickness" material="Silicon" sensitive="true"/>
<module_component thickness="0.25/100*9.37*cm-ITS3Thickness" material="Silicon"/>
</module>
<layer id="1">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin1 + 0 * 1.2*cm"
rmax="TrackerEndcapOuter_rmax1"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin1+TrackerEndcapOuterMod1_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module1" />
</layer>
<layer id="2">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin2"
rmax="TrackerEndcapOuter_rmax2"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin + TrackerEndcapOuterLayer_dz" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin2+TrackerEndcapOuterMod2_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module2" />
</layer>
<layer id="3">
<envelope vis="AnlRed"
rmin="TrackerEndcapOuter_rmin3"
rmax="TrackerEndcapOuter_rmax3"
length="TrackerEndcapOuterLayer_thickness"
zstart="TrackerEndcapOuter_zmin + 2 * TrackerEndcapOuterLayer_dz" />
<ring vis="AnlRed"
r="TrackerEndcapOuter_rmin3+TrackerEndcapOuterMod3_y/2.0"
zstart="0.0*mm"
nmodules="12" dz="2.5 * mm" module="Module3" />
</detectors>
<readouts>
<readout name="TrackerBarrelHits">
<segmentation type="CartesianGridXY" grid_size_x="0.010*mm" grid_size_y="0.010*mm" />
<id>system:8,barrel:2,layer:4,module:12,sensor:2,x:32:-16,y:-16</id>
</readout>
<readout name="TrackerEndcapHits">
<segmentation type="CartesianGridXZ" grid_size_x="0.010*mm" grid_size_z="0.010*mm" />
<id>system:8,barrel:2,layer:4,module:12,sensor:2,x:32:-16,z:-16</id>
</readout>
</readouts>
</lccdd>