diff --git a/compact/gem_tracker_endcap.xml b/compact/gem_tracker_endcap.xml
index 029e11bd843761d8aaadbb2d62463dfd46c851b8..ea30963e75c1977ea9530f4698f4f83c9ca76049 100644
--- a/compact/gem_tracker_endcap.xml
+++ b/compact/gem_tracker_endcap.xml
@@ -20,12 +20,22 @@
<constant name="GEMTrackerEndcapFoilX2" value="2*GEMTrackerEndcapFoilY*tan(GEMTrackerEndcapFoilOpeningAngle/2.0) + GEMTrackerEndcapFoilX1"/>
<constant name="GEMTrackerEndcapFoil_rmax" value="(GEMTrackerEndcapFoilY+GEMTrackerEndcapFoil_rmin)/(cos(GEMTrackerEndcapFoilOpeningAngle/2.0))"/>
+ <comment>
+ Needs implimentation:
+ Carbon fiber support ring and spokes
+ Initial preliminary details can be found here: https://www.dropbox.com/s/grt9p8feqlsh52f/GEM-RD-GEMWheel.pdf?dl=0
+ This design is still very much preliminary
// Frame parameters accoring to Kondo's sbsCrossSection.pdf file),
- <constant name="GEMTrackerEndcapFrame_thickness" value="18.0 * mm"/>
+ //frame thickness is from 1*3mm (drift gap) + 5*2mm frames
+ </comment>
+
+ <constant name="GEMTrackerEndcapFrame_thickness" value="13.0 * mm"/>
<constant name="GEMTrackerEndcapFrameBotEdge_width" value="10.0 * mm"/>
- <constant name="GEMTrackerEndcapFrameTopEdge_width" value="10.0 * mm"/>
+ <constant name="GEMTrackerEndcapFrameTopEdge_width" value="15.0 * mm"/>
<constant name="GEMTrackerEndcapFrameSideEdge_width" value=" 8.0 * mm"/>
+ <comment> Account for the fact that GEMs have holes, so they are not solid volumes </comment>
+ <constant name="GEMAreaFactor" value="0.80" />
<comment>
From https://github.com/eic/EicToyModel/blob/master/source/eicroot/GemGeoParData.cxx
@@ -90,25 +100,24 @@
</trd>
</frame>
<comment> Going from HV side to readout side</comment>
- <module_component thickness="0.127 * mm" material="Mylar"/>
- <module_component thickness="50.0*um" material="Kapton" name="entrance_window"/>
- <module_component thickness=" 3.0*mm" material="Ar10CO2" name="entrance region" />
- <module_component thickness="50.0*um" material="Kapton"/>
- <module_component thickness=" 3.0*um" material="Copper"/>
- <module_component thickness=" 3.0*mm" material="Ar10CO2" name="drift region"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer region I"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer region II"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="induction region"/>
- <module_component thickness="30.0*um" material="Kapton" name="readout" sensitive="true"/>
- <module_component thickness=" 3.0*um" material="Copper" name="readout_Cu"/>
- <module_component thickness="127.0*um" material="Mylar"/>
- <module_component thickness="200.0*um" material="Epoxy" sensitive="true" vis="AnlProcess_Blue"/>
+ <module_component thickness="25.0*um" material="Mylar" name="entrance_window"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="entrance_region" />
+ <module_component thickness="50.0*um" material="Kapton" name="cathode_foil"/>
+ <module_component thickness=" 5.0*um" material="Copper" name="cathode_cu"/>
+ <module_component thickness=" 3.0*mm" material="Ar10CO2" sensitive="true" name="drift_region" vis="AnlProcess_Blue"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_1"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_1_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer_region_I"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_2"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_2_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer_region_II"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_3"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_3_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="induction_region"/>
+ <module_component thickness="50.0*um" material="Kapton" name="readout_foil"/>
+ <module_component thickness=" 5.0*um" material="Copper" name="readout_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="exit_region"/>
+ <module_component thickness="25.0*um" material="Mylar" name="exit_window"/>
</module>
<module name="GEMSupportModule1" vis="AnlProcess_Blue">
<trd x1="GEMTrackerEndcapFoilX1/2.0" x2="GEMTrackerEndcapFoilX2/2.0" z="GEMTrackerEndcapFoilY/2"/>
@@ -154,44 +163,62 @@
reflect="true">
<module name="GEMModule1" vis="AnlProcess_Blue">
<trd x1="GEMTrackerEndcapFoilX1/2.0" x2="GEMTrackerEndcapFoilX2/2.0" z="GEMTrackerEndcapFoilY/2"/>
+ <frame material="G10" thickness="GEMTrackerEndcapFrame_thickness" vis="TrackerSupportVis">
+ <position x="0" y="0" z="0" />
+ <trd x1="GEMTrackerEndcapFoilX1/2.0 - GEMTrackerEndcapFrameSideEdge_width/cos(GEMTrackerEndcapFoilOpeningAngle)
+ + GEMTrackerEndcapFrameBotEdge_width*tan(GEMTrackerEndcapFoilOpeningAngle)"
+ x2="GEMTrackerEndcapFoilX2/2.0 - GEMTrackerEndcapFrameSideEdge_width/cos(GEMTrackerEndcapFoilOpeningAngle)
+ - GEMTrackerEndcapFrameTopEdge_width*tan(GEMTrackerEndcapFoilOpeningAngle)"
+ z="GEMTrackerEndcapFoilY/2 - (GEMTrackerEndcapFrameBotEdge_width +GEMTrackerEndcapFrameTopEdge_width)/2.0 ">
+ <position x="0" y="0" z="0" />
+ </trd>
+ </frame>
<comment> Going from HV side to readout side</comment>
- <module_component thickness="0.127 * mm" material="Mylar"/>
- <module_component thickness="50.0*um" material="Kapton" name="entrance_window"/>
- <module_component thickness=" 3.0*mm" material="Ar10CO2" name="entrance region" />
- <module_component thickness="50.0*um" material="Kapton"/>
- <module_component thickness=" 3.0*um" material="Copper"/>
- <module_component thickness=" 3.0*mm" material="Ar10CO2" name="drift region"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer region I"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer region II"/>
- <module_component thickness="30.0*um" material="Kapton" name="gem_foil"/>
- <module_component thickness=" 3.0*um" material="Copper" name="gem_foil_Cu"/>
- <module_component thickness=" 2.0*mm" material="Ar10CO2" name="induction region"/>
- <module_component thickness="30.0*um" material="Kapton" name="readout" sensitive="true"/>
- <module_component thickness=" 3.0*um" material="Copper" name="readout_Cu"/>
- <module_component thickness="127.0*um" material="Mylar"/>
- <module_component thickness="200.0*um" material="Epoxy" sensitive="true" vis="AnlProcess_Blue"/>
+ <module_component thickness="25.0*um" material="Mylar" name="entrance_window"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="entrance_region" />
+ <module_component thickness="50.0*um" material="Kapton" name="cathode_foil"/>
+ <module_component thickness=" 5.0*um" material="Copper" name="cathode_cu"/>
+ <module_component thickness=" 3.0*mm" material="Ar10CO2" sensitive="true" name="drift_region" vis="AnlProcess_Blue"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_1"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_1_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer_region_I"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_2"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_2_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="transfer_region_II"/>
+ <module_component thickness="GEMAreaFactor*50.0*um" material="Kapton" name="gem_foil_3"/>
+ <module_component thickness="GEMAreaFactor*10.0*um" material="Copper" name="gem_foil_3_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="induction_region"/>
+ <module_component thickness="50.0*um" material="Kapton" name="readout_foil"/>
+ <module_component thickness=" 5.0*um" material="Copper" name="readout_cu"/>
+ <module_component thickness=" 2.0*mm" material="Ar10CO2" name="exit_region"/>
+ <module_component thickness="25.0*um" material="Mylar" name="exit_window"/>
</module>
<module name="GEMSupportModule1" vis="AnlProcess_Blue">
- <trd x1="GEMTrackerEndcapFoilX2/2.0" x2="GEMTrackerEndcapFoilX1/2.0" z="GEMTrackerEndcapFrameBotEdge_width"/>
- <module_component thickness="GEMTrackerEndcapFrame_thickness" material="Mylar"/>
+ <trd x1="GEMTrackerEndcapFoilX1/2.0" x2="GEMTrackerEndcapFoilX2/2.0" z="GEMTrackerEndcapFoilY/2"/>
+ <frame material="G10" thickness="GEMTrackerEndcapFrame_thickness" vis="TrackerSupportVis">
+ <position x="0" y="0" z="0" />
+ <trd x1="GEMTrackerEndcapFoilX1/2.0 - GEMTrackerEndcapFrameSideEdge_width/cos(GEMTrackerEndcapFoilOpeningAngle)
+ + GEMTrackerEndcapFrameBotEdge_width*tan(GEMTrackerEndcapFoilOpeningAngle)"
+ x2="GEMTrackerEndcapFoilX2/2.0 - GEMTrackerEndcapFrameSideEdge_width/cos(GEMTrackerEndcapFoilOpeningAngle)
+ - GEMTrackerEndcapFrameTopEdge_width*tan(GEMTrackerEndcapFoilOpeningAngle)"
+ z="GEMTrackerEndcapFoilY/2 - (GEMTrackerEndcapFrameBotEdge_width +GEMTrackerEndcapFrameTopEdge_width)/2.0 ">
+ <position x="0" y="0" z="0" />
+ </trd>
+ </frame>
</module>
<module name="GEMSupportModule2" vis="AnlProcess_Blue">
<trd x1="GEMTrackerEndcapFrameSideEdge_width" x2="GEMTrackerEndcapFrameSideEdge_width" z="GEMTrackerEndcapFoilY/2"/>
- <module_component thickness="4.0*mm" material="Mylar"/>
+ <module_component thickness="1.0*mm" material="Mylar"/>
</module>
<layer id="1" >
- <ring vis="AnlRed"
+ <ring vis="AnlRed" module="GEMModule1"
r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
zstart="GEMTrackerEndcap_zmin + 0.5*GEMTrackerEndcapLayer_thickness"
- nmodules="12" dz="10 * mm" module="GEMModule1" />
- <ring vis="AnlBlue" phi0="15.0*degree"
+ nmodules="12" dz="10 * mm" />
+ <ring vis="AnlBlue" phi0="15.0*degree" module="GEMSupportModule2"
r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
zstart="GEMTrackerEndcap_zmin + 0.5*GEMTrackerEndcapLayer_thickness"
- nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
+ nmodules="12" dz="0 * mm" />
</layer>
</detector>