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<?xml version="1.0" encoding="UTF-8"?>
<lccdd>
<define>
<comment>
Main parameters
</comment>
<constant name="SiVertexSensor_thickness" value="40*um"/>
<constant name="VertexBarrelMod_length" value="280.0*mm"/>
<constant name="VertexBarrelMod_rmin" value="3.3*cm"/>
<constant name="VertexBarrelMod_offset" value="1.05*cm"/>
<constant name="VertexBarrelMod_count" value="3"/>
<constant name="VertexBarrelShell_thickness" value="300.0*um"/>
<documentation>
#### Vertex Tracker Barrel Parameters
- The sensor modules are 2 half-cylinders.
- There are 2 sensitive layers
- Each sensor has a thickness is 40um
- There is an outer shell for structural support 300um thick.
- The ID of this shell is set (arbitrarily) to 10 cm.
##### Sensor layers
Currently there are 2 sensor layers. Each is composed of 2 half-cylinders modules with only 40um of silicon thickness.
##### Support shell
Simple carbon fiber support shell.
</documentation>
<constant name="VertexBarrelEnvelope_length" value="VertexTrackingRegion_length"/>
<constant name="VertexBarrelLayer_length" value="VertexBarrelMod_length + 1*um"/>
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<constant name="VertexBarrelLayer_thickness" value="0.2*cm"/>
<constant name="VertexBarrelMod_thickness" value="0.1*cm"/>
<constant name="VertexBarrelMod1_rmin" value="VertexBarrelMod_rmin"/>
<constant name="VertexBarrelMod2_rmin" value="VertexBarrelMod_rmin + 1 * VertexBarrelMod_offset"/>
<constant name="VertexBarrelMod3_rmin" value="VertexBarrelMod_rmin + 2 * VertexBarrelMod_offset"/>
<constant name="VertexBarrelLayer1_rmin" value="VertexBarrelMod_rmin - VertexBarrelLayer_thickness/2.0"/>
<constant name="VertexBarrelLayer1_rmax" value="VertexBarrelLayer1_rmin + VertexBarrelLayer_thickness"/>
<constant name="VertexBarrelLayer2_rmin" value="VertexBarrelLayer1_rmin + 1 * VertexBarrelMod_offset"/>
<constant name="VertexBarrelLayer2_rmax" value="VertexBarrelLayer2_rmin + VertexBarrelLayer_thickness"/>
<constant name="VertexBarrelLayer3_rmin" value="VertexBarrelLayer1_rmin + 2 * VertexBarrelMod_offset"/>
<constant name="VertexBarrelLayer3_rmax" value="VertexBarrelLayer3_rmin + VertexBarrelLayer_thickness"/>
<comment>
"Support" is to "shell" like "layer" is to "module", and is need for the flat stave barrel implementation.
</comment>
<constant name="VertexBarrelShell_rmin" value="VertexBarrelMod_rmin + VertexBarrelMod_count * VertexBarrelMod_offset"/>
<constant name="VertexBarrelShell_rmax" value="VertexBarrelShell_rmin + VertexBarrelShell_thickness"/>
<constant name="VertexBarrelShell_length" value="VertexBarrelMod_length"/>
<constant name="VertexBarrelSupport_thickness" value="0.1*cm"/>
<constant name="VertexBarrelSupport_rmin" value="VertexBarrelShell_rmin-VertexBarrelSupport_thickness/2.0"/>
<constant name="VertexBarrelSupport_rmax" value="VertexBarrelSupport_rmin + VertexBarrelSupport_thickness"/>
<constant name="VertexBarrelSupport_length" value="VertexBarrelLayer_length"/>
<comment>
Extra parameters to approximate a cylinder as a set of skinny staves
due to ACTS limitations.
</comment>
<constant name="VertexBarrelStave_count" value="128"/>
<constant name="VertexBarrelStave1_width" value="2*VertexBarrelMod1_rmin * tan(180*degree/VertexBarrelStave_count)"/>
<constant name="VertexBarrelStave2_width" value="2*VertexBarrelMod2_rmin * tan(180*degree/VertexBarrelStave_count)"/>
<constant name="VertexBarrelStave3_width" value="2*VertexBarrelMod3_rmin * tan(180*degree/VertexBarrelStave_count)"/>
<constant name="VertexBarrelShellStave_width" value="2*VertexBarrelShell_rmin * tan(180*degree/VertexBarrelStave_count)"/>
</define>
<display>
</display>
<detectors>
<documentation level="5">
### Actual detectors
</documentation>
<detector
id="VertexBarrel_0_ID"
name="VertexBarrel"
type="athena_VertexBarrel"
readout="VertexBarrelHits"
insideTrackingVolume="true">
<dimensions
rmin="VertexBarrelLayer1_rmin"
rmax="VertexBarrelSupport_rmax"
length="VertexBarrelEnvelope_length" />
<comment>Vertex Barrel Modules</comment>
<module name="Module1" vis="VertexLayerVis">
<module_component name="ITS3"
material="Silicon"
sensitive="true"
width="VertexBarrelStave1_width"
length="VertexBarrelMod_length"
thickness="SiVertexSensor_thickness"
vis="VertexLayerVis" />
</module>
<module name="Module2" vis="VertexLayerVis">
<module_component name="ITS3"
material="Silicon"
sensitive="true"
width="VertexBarrelStave2_width"
length="VertexBarrelMod_length"
thickness="SiVertexSensor_thickness"
vis="VertexLayerVis" />
</module>
<module name="Module3" vis="VertexLayerVis">
<module_component name="ITS3"
material="Silicon"
sensitive="true"
width="VertexBarrelStave3_width"
length="VertexBarrelMod_length"
thickness="SiVertexSensor_thickness"
vis="VertexLayerVis" />
</module>
<module name="SupportShell" vis="VertexSupportVis">
<module_component name="CF Shell"
material="CarbonFiber"
sensitive="false"
width="VertexBarrelShellStave_width"
length="VertexBarrelShell_length"
thickness="VertexBarrelShell_thickness"
vis="VertexSupportVis" />
</module>
<comment> Layers composed of many arrayed modules </comment>
<layer module="Module1" id="1" vis="VertexLayerVis">
<barrel_envelope
inner_r="VertexBarrelLayer1_rmin"
outer_r="VertexBarrelLayer1_rmax"
z_length="VertexBarrelLayer_length" />
<layer_material surface="outer" binning="binPhi,binZ" bins0="VertexBarrelStave_count" bins1="100" />
<comment>
phi0 : Starting phi of first module.
phi_tilt : Phi tilt of a module.
rc : Radius of the module center.
nphi : Number of modules in phi.
rphi_dr : The delta radius of every other module.
z0 : Z position of first module in phi.
nz : Number of modules to place in z.
dr : Radial displacement parameter, of every other module.
</comment>
<rphi_layout phi_tilt="0.0*degree" nphi="VertexBarrelStave_count" phi0="0.0" rc="VertexBarrelMod1_rmin" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
<layer module="Module2" id="2" vis="VertexLayerVis">
<barrel_envelope
inner_r="VertexBarrelLayer2_rmin"
outer_r="VertexBarrelLayer2_rmax"
z_length="VertexBarrelLayer_length" />
<layer_material surface="outer" binning="binPhi,binZ" bins0="VertexBarrelStave_count" bins1="100" />
<rphi_layout phi_tilt="0.0*degree" nphi="VertexBarrelStave_count" phi0="0.0" rc="VertexBarrelMod2_rmin" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
<layer module="Module3" id="3" vis="VertexLayerVis">
<barrel_envelope
inner_r="VertexBarrelLayer3_rmin"
outer_r="VertexBarrelLayer3_rmax"
z_length="VertexBarrelLayer_length" />
<layer_material surface="outer" binning="binPhi,binZ" bins0="VertexBarrelStave_count" bins1="100" />
<rphi_layout phi_tilt="0.0*degree" nphi="VertexBarrelStave_count" phi0="0.0" rc="VertexBarrelMod3_rmin" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
<layer module="SupportShell" id="VertexBarrelMod_count + 1" vis="VertexSupportLayerVis">
<barrel_envelope
inner_r="VertexBarrelSupport_rmin"
outer_r="VertexBarrelSupport_rmax"
z_length="VertexBarrelSupport_length" />
<layer_material surface="outer" binning="binPhi,binZ" bins0="VertexBarrelStave_count" bins1="100" />
<rphi_layout phi_tilt="0.0*degree" nphi="VertexBarrelStave_count" phi0="0.0" rc="VertexBarrelShell_rmin" dr="0.0 * mm"/>
<z_layout dr="0.0 * mm" z0="0.0 * mm" nz="1"/>
</layer>
</detector>
</detectors>
<readouts>
<readout name="VertexBarrelHits">
<segmentation type="CartesianGridXY" grid_size_x="0.010*mm" grid_size_y="0.010*mm" />
<id>system:8,layer:4,module:12,sensor:2,x:32:-16,y:-16</id>
</readout>
</readouts>
</lccdd>