From ce5758ec83fd9bebe5ce6044b217090fc567d628 Mon Sep 17 00:00:00 2001
From: Whitney Armstrong <warmstrong@anl.gov>
Date: Tue, 20 Apr 2021 00:08:25 -0500
Subject: [PATCH] Added detailed GEM layering
- Added gem layer structure
- Added support module and ability to change the module component TRD
parameters from the default envelope values.
modified: compact/gem_tracker_endcap.xml
modified: src/TrapEndcapTracker_geo.cpp
---
compact/gem_tracker_endcap.xml | 130 +++++++++++++++++++++++++++++----
src/TrapEndcapTracker_geo.cpp | 6 +-
2 files changed, 122 insertions(+), 14 deletions(-)
diff --git a/compact/gem_tracker_endcap.xml b/compact/gem_tracker_endcap.xml
index 78b7f2d2..4c0a5592 100644
--- a/compact/gem_tracker_endcap.xml
+++ b/compact/gem_tracker_endcap.xml
@@ -3,12 +3,56 @@
<comment> Endcap Tracker </comment>
<define>
+ <constant name="GEMTrackerEndcap_zmin" value="BarrelTracking_length/2.0"/>
+ <constant name="GEMTrackerEndcap_NLayers" value="5"/>
+ <constant name="GEMTrackerEndcapLayer_thickness" value="ForwardTrackingGEMLength/GEMTrackerEndcap_NLayers"/>
+
<constant name="GEMTrackerEndcapFoilX1" value="43.0 * mm"/>
<constant name="GEMTrackerEndcapFoilY" value="1020.0 * mm"/>
<constant name="GEMTrackerEndcapFoilOpeningAngle" value="30.1*degree"/>
<constant name="GEMTrackerEndcapFoilX2" value="2*GEMTrackerEndcapFoilY*tan(GEMTrackerEndcapFoilOpeningAngle/2.0) + GEMTrackerEndcapFoilX1"/>
<constant name="GEMTrackerEndcapFoil_rmin" value="GEMTrackerEndcapFoilX1/(tan(GEMTrackerEndcapFoilOpeningAngle/2.0)*2.0)"/>
<constant name="GEMTrackerEndcapFoil_rmax" value="(GEMTrackerEndcapFoilY+GEMTrackerEndcapFoil_rmin)/(cos(GEMTrackerEndcapFoilOpeningAngle/2.0))"/>
+
+
+ // Frame parameters accoring to Kondo's sbsCrossSection.pdf file),
+ <constant name="GEMTrackerEndcapFrame_thickness" value="18.0 * mm"/>
+ <constant name="GEMTrackerEndcapFrameBotEdge_width" value="30.0 * mm"/>
+ <constant name="GEMTrackerEndcapFrameTopEdge_width" value="30.0 * mm"/>
+ <constant name="GEMTrackerEndcapFrameSideEdge_width" value=" 8.0 * mm"/>
+
+ <comment>
+ From https://github.com/eic/EicToyModel/blob/master/source/eicroot/GemGeoParData.cxx
+
+ // FIXME: put aluminum layer later as well),
+ mEntranceWindowMaterial ( "GemKapton"),
+ mEntranceWindowThickness ( 50.0 * etm::um),
+
+ // Use evaristo.pdf p.10 for the foil parameters:
+ // - drift foil : 50um kapton + 3um copper)
+ // - GEM foil : 30um kapton + 3um copper (80% area fraction))
+ // - readout foils : 30um kapton + 3um copper total)
+ mDriftFoilKaptonThickness ( 50.0 * etm::um),
+ mDriftFoilCopperThickness ( 3.0 * etm::um),
+ mGemFoilAreaFraction ( 0.80),
+ mGemFoilKaptonThickness ( 30.0 * etm::um),
+ mGemFoilCopperThickness ( 3.0 * etm::um),
+
+ mReadoutG10Thickness ( 0.0 * etm::mm),
+ mReadoutKaptonThickness ( 30.0 * etm::um),
+ mReadoutCopperThickness ( 3.0 * etm::um),
+
+ // 3mm thick Nomex honeycomb for SBS GEMs),
+ mReadoutSupportMaterial ( "GemNomex"),
+ mReadoutSupportThickness ( 3.0 * etm::mm),
+
+ mEntranceRegionLength ( 3.0 * etm::mm),
+ mDriftRegionLength ( 3.0 * etm::mm),
+ // Assume triple GEM layout),
+ mFirstTransferRegionLength ( 2.0 * etm::mm),
+ mSecondTransferRegionLength ( 2.0 * etm::mm),
+ mInductionRegionLength ( 2.0 * etm::mm)
+ </comment>
</define>
<limits>
@@ -31,23 +75,83 @@
<module name="GEMModule1" vis="Argonne_Process_Blue">
<trd x1="GEMTrackerEndcapFoilX1/2.0" x2="GEMTrackerEndcapFoilX2/2.0" z="GEMTrackerEndcapFoilY/2"/>
<comment> Going from HV side to readout side</comment>
- <module_component thickness="1.127 * mm" material="Mylar"/>
- <module_component thickness="3*mm" material="Ar10CO2"/>
- <module_component thickness="0.127 * mm" material="Mylar"/>
- <module_component thickness="2*mm" material="Ar10CO2"/>
- <module_component thickness="0.127 * mm" material="Mylar"/>
- <module_component thickness="2*mm" material="Ar10CO2"/>
<module_component thickness="0.127 * mm" material="Mylar"/>
- <module_component thickness="2*mm" material="Ar10CO2"/>
- <module_component thickness="0.175 * mm" material="Epoxy" sensitive="true" vis="Argonne_Process_Blue"/>
+ <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="Argonne_Process_Blue"/>
+ </module>
+ <module name="GEMSupportModule1" vis="Argonne_Process_Blue">
+ <trd x1="GEMTrackerEndcapFoilX2/2.0" x2="GEMTrackerEndcapFoilX1/2.0" z="GEMTrackerEndcapFrameBotEdge_width"/>
+ <module_component thickness="GEMTrackerEndcapFrame_thickness" material="Mylar"/>
+ </module>
+ <module name="GEMSupportModule2" vis="Argonne_Process_Blue">
+ <trd x1="GEMTrackerEndcapFrameSideEdge_width" x2="GEMTrackerEndcapFrameSideEdge_width" z="GEMTrackerEndcapFoilY/2"/>
+ <module_component thickness="4.0*mm" material="Mylar"/>
</module>
<layer id="1" >
- <envelope vis="Argonne_Red"
- rmin="GEMTrackerEndcapFoil_rmin" rmax="GEMTrackerEndcapFoil_rmax"
- zstart="SiliconTrackerOuterBarrelLength/2+15*mm" length="30.0*mm" />
- <ring r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
- zstart="SiliconTrackerOuterBarrelLength/2+20*mm"
+ <ring vis="Argonne_Red"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+0*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="10 * mm" module="GEMModule1" />
+ <ring vis="Argonne_Blue" phi0="15.0*degree"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+0*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
+ </layer>
+ <layer id="2" >
+ <ring vis="Argonne_Red"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+1*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="10 * mm" module="GEMModule1" />
+ <ring vis="Argonne_Blue" phi0="15.0*degree"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+1*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
+ </layer>
+ <layer id="3" >
+ <ring vis="Argonne_Red"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+2*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="10 * mm" module="GEMModule1" />
+ <ring vis="Argonne_Blue" phi0="15.0*degree"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+2*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
+ </layer>
+ <layer id="4" >
+ <ring vis="Argonne_Red"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+3*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="10 * mm" module="GEMModule1" />
+ <ring vis="Argonne_Blue" phi0="15.0*degree"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+3*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
+ </layer>
+ <layer id="5" >
+ <ring vis="Argonne_Red"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+4*GEMTrackerEndcapLayer_thickness"
nmodules="12" dz="10 * mm" module="GEMModule1" />
+ <ring vis="Argonne_Blue" phi0="15.0*degree"
+ r="GEMTrackerEndcapFoil_rmin+GEMTrackerEndcapFoilY/2.0"
+ zstart="GEMTrackerEndcap_zmin+4*GEMTrackerEndcapLayer_thickness"
+ nmodules="12" dz="0 * mm" module="GEMSupportModule2" />
</layer>
</detector>
diff --git a/src/TrapEndcapTracker_geo.cpp b/src/TrapEndcapTracker_geo.cpp
index ea0c961c..30251db0 100644
--- a/src/TrapEndcapTracker_geo.cpp
+++ b/src/TrapEndcapTracker_geo.cpp
@@ -59,9 +59,13 @@ static Ref_t create_detector(Detector& description, xml_h e, SensitiveDetector s
for (ci.reset(), n_sensor = 1, c_id = 0, posY = -y1; ci; ++ci, ++c_id) {
xml_comp_t c = ci;
double c_thick = c.thickness();
+ auto comp_x1 = getAttrOrDefault(c, _Unicode(x1), x1);
+ auto comp_x2 = getAttrOrDefault(c, _Unicode(x2), x2);
+ auto comp_height = getAttrOrDefault(c, _Unicode(height), z);
+
Material c_mat = description.material(c.materialStr());
string c_name = _toString(c_id, "component%d");
- Volume c_vol(c_name, Trapezoid(x1, x2, c_thick / 2e0, c_thick / 2e0, z), c_mat);
+ Volume c_vol(c_name, Trapezoid(comp_x1, comp_x2, c_thick / 2e0, c_thick / 2e0, comp_height), c_mat);
c_vol.setVisAttributes(description.visAttributes(c.visStr()));
pv = m_volume.placeVolume(c_vol, Position(0, posY + c_thick / 2, 0));
--
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