From 61e0f7954d12248476acf3db24d8f6b208a023d5 Mon Sep 17 00:00:00 2001
From: Wouter Deconinck <wouter.deconinck@umanitoba.ca>
Date: Fri, 13 Aug 2021 09:06:30 +0000
Subject: [PATCH] Updated MRich with Murad's current version
---
athena.xml | 2 +-
compact/definitions.xml | 3 +-
compact/mrich.xml | 129 +++++++++++++++++++++--------
compact/optical_materials.xml | 16 ++++
src/MRich_geo.cpp | 147 +++++++++++++++++++++++-----------
5 files changed, 217 insertions(+), 80 deletions(-)
diff --git a/athena.xml b/athena.xml
index a0b3aa93..9edd4748 100644
--- a/athena.xml
+++ b/athena.xml
@@ -173,7 +173,7 @@
### PID detectors
</documentation>
<!--include ref="compact/dirc.xml"/-->
- <!--include ref="compact/mrich.xml"/-->
+ <include ref="compact/mrich.xml"/>
<!--include ref="compact/forward_trd.xml"/-->
<include ref="compact/drich.xml"/>
diff --git a/compact/definitions.xml b/compact/definitions.xml
index 5b8de90a..865628c5 100644
--- a/compact/definitions.xml
+++ b/compact/definitions.xml
@@ -330,7 +330,8 @@ Examples:
<constant name="ForwardTRD_length" value="25.0*cm"/>
<constant name="ForwardTOF_length" value="ExtraTrackingEndcapP_length-ForwardTRD_length"/>
- <constant name="BackwardCherenkov_length" value="20.0*cm"/>
+ <constant name="BackwardCherenkov_rmax" value="100.0*cm"/>
+ <constant name="BackwardCherenkov_length" value="40.0*cm"/>
<constant name="ExtraTrackingEndcapN_length" value="5.0*cm"/>
<constant name="BackwardTOF_length" value="0.0*cm"/>
diff --git a/compact/mrich.xml b/compact/mrich.xml
index e7ff797b..7a8e34b6 100644
--- a/compact/mrich.xml
+++ b/compact/mrich.xml
@@ -1,10 +1,11 @@
<lccdd>
<comment> MRICH </comment>
<define>
- <constant name="MRICH_rmin" value="15*cm"/>
- <constant name="MRICH_rmax" value="BarrelTracking_rmax"/>
+ <constant name="MRICH_rmin" value="10*cm"/>
+ <constant name="MRICH_rmax" value="BackwardCherenkov_rmax"/>
<constant name="MRICH_length" value="BackwardCherenkov_length"/>
- <constant name="MRICH_zmin" value="-BarrelTracking_length/2.0 - BackwardTracking_length"/>
+ <constant name="MRICH_zmin" value="BarrelTracking_length/2.0 + BackwardTracking_length"/>
+
<constant name="MRICHAerogel_thickness" value="30.0*mm"/>
<constant name="MRICHAerogel_width" value="126.5*mm"/>
<constant name="MRICHFoam_thickness" value="2*mm"/>
@@ -15,7 +16,9 @@
<constant name="MRICHPhotoDet_length" value="48.5*mm"/>
<constant name="MRICHGlassWindow_width" value="103.5*mm"/>
<constant name="MRICHGlassPhotoDet_thickness" value="2.0*mm"/>
- <constant name="MRICHRearExtraSpace_thickness" value="10.0*mm"/>
+ <constant name="MRICHPhotoDetCopper_thickness" value="0.1*mm"/>
+ <constant name="MRICHPhotoDetKapton_thickness" value="0.2*mm"/>
+ <constant name="MRICHRearExtraSpace_thickness" value="9.7*mm"/>
<constant name="MRICHLensPhotoDet_length" value="136.4*mm"/>
<constant name="MRICHMirror_thickness" value="2.0*mm"/>
<constant name="MRICHMirror_length" value="MRICHLensPhotoDet_length - MRICHLensMirrorGap_thickness"/>
@@ -39,6 +42,8 @@
+ MRICHFresnelLens_thickness
+ MRICHLensPhotoDet_length
+ MRICHGlassPhotoDet_thickness
+ + MRICHPhotoDetCopper_thickness
+ + MRICHPhotoDetKapton_thickness
+ MRICHRearExtraSpace_thickness "/>
</define>
@@ -54,35 +59,87 @@
<detectors>
<detector id="MRICH_ID" name="MRICH" type="athena_MRICH"
readout="MRICHHits"
- projective="false"
- vis="InvisibleWithDaughters" material="Air">
- <dimensions rmin="MRICH_rmin" rmax="MRICH_rmax" length="MRICHCarbonFrame_length" zmin="-1.0*abs(MRICH_zmin)"/>
- <module name="MRICH_module1" vis="InvisibleWithDaughters"
- width="MRICHCarbonFrame_width"
- height="MRICHCarbonFrame_width"
- length="MRICHCarbonFrame_length">
- <frame vis="AnlGray" thickness="MRICHCarbonFrame_thickness" material="CarbonFiber"/>
- <aerogel vis="AnlTeal" length="MRICHAerogel_thickness" width="MRICHAerogel_width" material="AerogelOptical">
- <frame vis="AnlGold_1" thickness="MRICHFoam_thickness" material="PolystyreneFoam" />
- </aerogel>
- <lens vis="AnlViolet" thickness="MRICHFresnelLens_thickness"
- pitch="MRICHFresnelLensGroove_pitch" focal_length="6.0*inch"
- effective_diameter="MRICHFresnelLensEffectiveDiameter"
- width="MRICHAerogel_width"
- material="AcrylicOptical"/>
- <mirror vis="AnlGray" x1="MRICHMirror_width1" x2="MRICHMirror_width2" length="MRICHMirror_length"
- surface="MRICH_MirrorOpticalSurface" thickness="MRICHMirror_thickness" material="AluminumOxide"/>
- <photodet width="MRICHGlassWindow_width" thickness="MRICHGlassPhotoDet_thickness" material="PyrexGlassOptical">
- <sensor nx="2" ny="2" thickness="MRICHPhotoDet_thickness" width="MRICHPhotoDet_length" material="SiliconOxide"/>
- </photodet>
- </module>
- <!--
- <layer id="1">
- <array nx="4" ny="4" module="MRICH_module1">
- <position x="0" y="0" z="0"/>
- </array>
- </layer>
- -->
+ reflect="true"
+ projective="true"
+ vis="InvisibleWithDaughters"
+ material="Air">
+ <dimensions rmin="MRICH_rmin" rmax="MRICH_rmax" length="abs(MRICH_length)" zmin="MRICH_zmin"/>
+ <module name="MRICH_module1"
+ vis="InvisibleWithDaughters"
+ width="MRICHCarbonFrame_width"
+ height="MRICHCarbonFrame_width"
+ length="MRICHCarbonFrame_length">
+ <frame vis="AnlGray" thickness="MRICHCarbonFrame_thickness" material="CarbonFiber"/>
+ <aerogel vis="AnlTeal"
+ length="MRICHAerogel_thickness" width="MRICHAerogel_width"
+ material="AerogelOptical">
+ <frame vis="AnlGold_1" thickness="MRICHFoam_thickness" material="PolystyreneFoam" />
+ </aerogel>
+ <lens vis="AnlViolet" thickness="MRICHFresnelLens_thickness"
+ pitch="MRICHFresnelLensGroove_pitch" focal_length="6.0*inch"
+ effective_diameter="MRICHFresnelLensEffectiveDiameter"
+ width="MRICHAerogel_width"
+ material="AcrylicOptical"/>
+ <mirror vis="AnlGray"
+ x1="MRICHMirror_width1" x2="MRICHMirror_width2" length="MRICHMirror_length"
+ surface="MRICH_MirrorOpticalSurface" thickness="MRICHMirror_thickness"
+ material="AluminumOxide"/>
+ <photodet width="MRICHGlassWindow_width" thickness="MRICHGlassPhotoDet_thickness" material="PyrexGlassOptical">
+ <sensor nx="2" ny="2" thickness="MRICHPhotoDet_thickness" width="MRICHPhotoDet_length" material="SiliconOxide"/>
+ <!--layer thickness="MRICHPhotoDetCopper_thickness" material="Copper"/-->
+ <!--layer thickness="MRICHPhotoDetKapton_thickness" material="Kapton"/-->
+ </photodet>
+ </module>
+ <comment>
+ Modules are only listed here for one quadrant
+ </comment>
+ <positions scale="1.03">
+ <position x="-41.3250000000" y="178.6750000000"/>
+ <position x=" 96.0250000001" y="178.6750000000"/>
+ </positions>
+ <positions scale="1.036">
+ <position x="-41.3250000000" y="316.0250000001"/>
+ <position x=" 96.0250000001" y="316.0250000001"/>
+ <position x="233.3750000002" y="178.6750000000"/>
+ <position x="233.3750000002" y="316.0250000001"/>
+ </positions>
+ <positions scale="1.052">
+ <position x="-41.3250000000" y="453.3750000002"/>
+ <position x=" 96.0250000001" y="453.3750000002"/>
+ <position x="233.3750000002" y="453.3750000002"/>
+ <position x="370.7250000003" y="453.3750000002"/>
+ <position x="370.7250000003" y="316.0250000001"/>
+ <position x="370.7250000003" y="178.6750000000"/>
+ </positions>
+ <positions scale="1.078">
+ <position x="-41.3250000000" y="590.7250000003"/>
+ <position x=" 96.0250000001" y="590.7250000003"/>
+ <position x="233.3750000002" y="590.7250000003"/>
+ <position x="370.7250000003" y="590.7250000003"/>
+ <position x="508.0750000004" y="590.7250000003"/>
+ <position x="508.0750000004" y="178.6750000000"/>
+ <position x="508.0750000004" y="316.0250000001"/>
+ <position x="508.0750000004" y="453.3750000002"/>
+ </positions>
+ <positions scale="1.09">
+ <position x="-41.3250000000" y="728.0750000004"/>
+ <position x=" 96.0250000001" y="728.0750000004"/>
+ <position x="233.3750000002" y="728.0750000004"/>
+ <!--position x="370.7250000003" y="728.0750000004"/-->
+ <!--position x="508.0750000004" y="728.0750000004"/-->
+ <!--position x="645.4250000005" y="590.7250000003"/-->
+ <position x="645.4250000005" y="453.3750000002"/>
+ <position x="645.4250000005" y="316.0250000001"/>
+ <position x="645.4250000005" y="178.6750000000"/>
+ </positions>
+ <positions scale="1.095">
+ <!--position x="-41.3250000000" y="865.4250000005"/-->
+ <!--position x=" 96.0250000001" y="865.4250000005"/-->
+ <!--position x="233.3750000002" y="865.4250000005"/-->
+ <position x="782.7750000006" y="178.6750000000"/>
+ <!--position x="782.7750000006" y="316.0250000001"/-->
+ <!--position x="782.7750000006" y="453.3750000002"/-->
+ </positions>
</detector>
</detectors>
@@ -92,5 +149,11 @@
<id>system:8,module:14,sensor:8,x:32:-16,y:-16</id>
</readout>
</readouts>
+
+ <!--Globals>
+ <Parameter Name="mrichInfo" Value="mrichmod/mrich_1_geoparams-0-0-4294967295-1527211159.xml"/>
+ </Globals-->
+
+
</lccdd>
diff --git a/compact/optical_materials.xml b/compact/optical_materials.xml
index c510b815..242add12 100644
--- a/compact/optical_materials.xml
+++ b/compact/optical_materials.xml
@@ -47,6 +47,21 @@
1240*eV/600 1.49
1240*eV/400 1.49
"/>
+ <matrix name="ABSLENGTH__Acrylic" coldim="2" values="
+ 1240*eV/1100 2631*mm
+ 1240*eV/1000 2631*mm
+ 1240*eV/900 2631*mm
+ 1240*eV/800 2631*mm
+ 1240*eV/700 2500*mm
+ 1240*eV/600 2272*mm
+ 1240*eV/500 2000*mm
+ 1240*eV/400 1315*mm
+ 1240*eV/300 1613*mm
+ 1240*eV/250 740*mm
+ 1240*eV/225 125*mm
+ 1240*eV/210 10*mm
+ 1240*eV/200 0*mm
+ "/>
<!-- BEGIN dRICh material properties
- dumped from fun4all implementation
- see https://github.com/cisbani/dRICh/blob/main/share/source/g4dRIChOptics.hh
@@ -377,6 +392,7 @@
<composite n="2" ref="O"/>
<composite n="8" ref="H"/>
<property name="RINDEX" ref="RINDEX__Acrylic"/>
+ <property name="ABSLENGTH" ref="ABSLENGTH__Acrylic"/>
</material>
<!-- BEGIN dRICh material definitions -->
<material name="C2F6_DRICH">
diff --git a/src/MRich_geo.cpp b/src/MRich_geo.cpp
index 33d1059c..914e8fda 100644
--- a/src/MRich_geo.cpp
+++ b/src/MRich_geo.cpp
@@ -27,13 +27,25 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
Material air = description.material("AirOptical");
Material vacuum = description.vacuum();
string det_name = x_det.nameStr();
- //xml::Component pos = x_det.position();
DetElement sdet(det_name, x_det.id());
Assembly assembly(det_name);
sens.setType("photoncounter");
OpticalSurfaceManager surfMgr = description.surfaceManager();
+ // read module positions
+ std::vector<std::pair<double,double>> positions;
+ for (xml_coll_t x_positions_i(x_det, _Unicode(positions)); x_positions_i; ++x_positions_i) {
+ xml_comp_t x_positions = x_positions_i;
+ for (xml_coll_t x_position_i(x_positions, _U(position)); x_position_i; ++x_position_i) {
+ xml_comp_t x_position = x_position_i;
+ positions.push_back(
+ std::make_pair(x_positions.scale() * x_position.x() * mm,
+ x_positions.scale() * x_position.y() * mm));
+ }
+ }
+
bool projective = getAttrOrDefault(x_det, _Unicode(projective), false);
+ bool reflect = x_det.reflect(true);
PlacedVolume pv;
@@ -49,6 +61,7 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
auto rmax = dims.rmax();
auto length = dims.length();
auto zmin = dims.zmin();
+ auto zpos = zmin + length / 2;
// expect only one module (for now)
xml_comp_t x_mod = x_det.child(_U(module));
@@ -110,14 +123,14 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
// - The lens area outside of the effective diamtere is flat.
// - The grooves are not curved, rather they are polycone shaped, ie a flat approximating the curvature.
auto lens_vis = getAttrOrDefault<std::string>(x_lens, _U(vis), std::string("AnlBlue"));
- double groove_pitch = getAttrOrDefault(x_lens, _Unicode(pitch), 0.5 * mm);
+ double groove_pitch = getAttrOrDefault(x_lens, _Unicode(pitch), 0.2 * mm);// 0.5 * mm);
double lens_f = getAttrOrDefault(x_lens, _Unicode(focal_length), 6.0*2.54*cm);
- double eff_diameter = getAttrOrDefault(x_lens, _Unicode(effective_diameter), 130.0 * mm);
+ double eff_diameter = getAttrOrDefault(x_lens, _Unicode(effective_diameter), 152.4 * mm);
double lens_width = getAttrOrDefault(x_lens, _Unicode(width), 6.7*2.54*cm);
- double center_thickness = getAttrOrDefault(x_lens, _U(thickness), 2.0 * mm);
+ double center_thickness = getAttrOrDefault(x_lens, _U(thickness), 0.068 * 2.54 * cm);//2.0 * mm);
double n_acrylic = 1.49;
- double lens_curvature = 1.0 / (lens_f*(n_acrylic - 1.0));
+ double lens_curvature = 1.0 / (lens_f*(n_acrylic - 1.0)); //confirmed
double full_ring_rmax = std::min(eff_diameter / 2.0, lens_width/2.0);
double N_grooves = std::ceil((full_ring_rmax) / groove_pitch);
@@ -143,15 +156,12 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
while ( groove_rmax <= full_ring_rmax ) {
double dZ = groove_sagitta(groove_rmax) - groove_sagitta(groove_rmin);
- //std::cout << " dZ = " << dZ << ", lens_thickness = " << lens_thickness << "\n";
- //std::cout << "groove_rmin = " << groove_rmin << "\n";
- //std::cout << "groove_rmax = " << groove_rmax << "\n";
Polycone groove_solid(0, 2.0 * M_PI,
{groove_rmin, groove_rmin, groove_rmin},
{groove_rmax, groove_rmax, groove_rmin},
{-lens_thickness/2.0, lens_thickness/2.0-dZ, lens_thickness/2.0});
Volume lens_groove_vol("lens_groove_" + std::to_string(i_groove), groove_solid, lens_mat);
- lens_vol.placeVolume(lens_groove_vol); //,Position(0,0,lens_zpos));
+ lens_vol.placeVolume(lens_groove_vol);
//Volume groove_vol(groove_solid, lens_mat, par->name.c_str(), 0, 0, 0);
//new G4PVPlacement(0, par->pos, Groove_log[i], par->name.c_str(), motherLV, false, 0, OverlapCheck());
//phi1 = phi1 + halfpi; //g4 pre-defined: halfpi=pi/2
@@ -173,6 +183,7 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
groove_rmin = (i_groove )*groove_pitch;
groove_rmax = (i_groove+1)*groove_pitch;
}
+
//fresnel_lens_solid = UnionSolid(fresnel_lens_solid, flat_lens);
//Volume lens_vol(mod_name + "_lens", fresnel_lens_solid, lens_mat);
@@ -221,12 +232,32 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
Box window_box(photodet_width/2.0,photodet_width/2.0,photodet_thickness/2.0);
Volume window_vol(mod_name+"_window", window_box, photodet_mat);
- window_vol.setSensitiveDetector(sens);
double window_zpos = mirror_zpos + mirror_length/2.0+photodet_thickness/2.0;
pv = m_volume.placeVolume(window_vol,Position(0,0,window_zpos));
DetElement comp_de(mod_de, std::string("mod_sensor_de_") + std::to_string(1) , 1);
comp_de.setPlacement(pv);
+ // sensitive
pv.addPhysVolID("sensor", n_sensor);
+ window_vol.setSensitiveDetector(sens);
+ sensitives[mod_name].push_back(pv);
+ ++n_sensor;
+
+ // photon detector electronics layers
+ double layer_zpos = window_zpos + photodet_thickness/2.0;
+ int i_layer = 1;
+ for (xml_coll_t li(x_photodet, _Unicode(layer)); li; ++li) {
+ xml_comp_t x_layer = li;
+ Material layer_mat = description.material(x_layer.materialStr());
+ double layer_thickness = x_layer.thickness();
+ Box layer_box(photodet_width/2.0,photodet_width/2.0,layer_thickness/2.0);
+ Volume layer_vol(mod_name + "_layer_" + std::to_string(i_layer), layer_box, layer_mat);
+ layer_zpos += layer_thickness / 2.0;
+ pv = m_volume.placeVolume(layer_vol,Position(0,0,layer_zpos));
+ DetElement layer_de(mod_de, std::string("mod_layer_de_") + std::to_string(i_layer), 1);
+ layer_de.setPlacement(pv);
+ layer_zpos += layer_thickness / 2.0;
+ i_layer++;
+ }
//for (size_t ic = 0; ic < sensVols.size(); ++ic) {
// PlacedVolume sens_pv = sensVols[ic];
@@ -242,14 +273,10 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
//DetElement window_de(sdet, mod_name + std::string("_window_de") + std::to_string(1), 1);
//window_de.setPlacement(pv);
- window_vol.setSensitiveDetector(sens);
- sensitives[mod_name].push_back(pv);
- ++n_sensor;
modules[mod_name] = m_volume;
module_assembly_delements[mod_name] = mod_de;
// end module
- int i_mod = 1;
// detector envelope
Tube envShape(rmin, rmax, length / 2., 0., 2 * M_PI);
Volume envVol("MRICH_Envelope", envShape, air);
@@ -263,41 +290,71 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
auto mod_v = modules[mod_name];
// determine module direction, always facing z = 0
double roty = dims.zmin() < 0. ? -M_PI : 0 ;
- int imod = 1;
- for (auto& p : points) {
- ROOT::Math::XYZVector x_location(p.x(), p.y(), zmin+std::signbit(zmin)*mod_length/2.0);
- ROOT::Math::XYZVector z_dir(0, 0, 1);
- ROOT::Math::XYZVector x_dir(1, 0, 0);
- ROOT::Math::XYZVector rot_axis = x_location.Cross(z_dir);
- double rot_angle = ROOT::Math::VectorUtil::Angle(z_dir,x_location);
- ROOT::Math::AxisAngle proj_rot(rot_axis,-1.0*rot_angle);
- ROOT::Math::AxisAngle grid_fix_rot(x_location,0.0*rot_angle);
- auto new_x_dir = grid_fix_rot*x_dir;
- // operations are inversely ordered
- Transform3D tr = Translation3D(p.x(), p.y(), 0.) // move to position
- * RotationY(roty); // facing z = 0.
-
- if(projective) {
- tr = Translation3D(p.x(), p.y(), 0.) // move to position
- * grid_fix_rot // keep the modules oriented vertially
- * proj_rot // projective rotation
- * RotationY(roty); // facing z = 0.
+
+ // place modules
+ int i_mod = 1; // starts at 1
+ for (auto& p: positions) {
+
+ // get positions in one quadrant
+ double x = p.first;
+ double y = p.second;
+ double z = -zpos;
+
+ // and place in all quadrants (intentional shadowing)
+ for (auto& p: decltype(positions){{x,y}, {y,-x}, {-x,-y}, {-y,x}}) {
+
+ // get positions (intentional shadowing)
+ double x = p.first;
+ double y = p.second;
+
+ // get angles
+ double rotAngX = atan(y/z);
+ double rotAngY = -1.*atan(x/z);
+
+ /*
+ ROOT::Math::XYZVector x_location(p.x(), p.y(), zmin+std::signbit(zmin)*mod_length/2.0);
+ ROOT::Math::XYZVector z_dir(0, 0, 1);
+ ROOT::Math::XYZVector x_dir(1, 0, 0);
+ ROOT::Math::XYZVector rot_axis = x_location.Cross(z_dir);
+ double rot_angle = ROOT::Math::VectorUtil::Angle(z_dir,x_location);
+ ROOT::Math::AxisAngle proj_rot(rot_axis,-1.0*rot_angle);
+ ROOT::Math::AxisAngle grid_fix_rot(x_location,0.0*rot_angle);
+ auto new_x_dir = grid_fix_rot*x_dir;
+ // operations are inversely ordered
+ Transform3D tr = Translation3D(p.x(), p.y(), 0.) // move to position
+ * RotationY(roty); // facing z = 0.
+ */
+
+ Transform3D tr;
+ if(projective) {
+ tr = Translation3D(x, y, 0)
+ * RotationX(rotAngX)
+ * RotationY(rotAngY);
+ } else {
+ tr = Translation3D(x, y, 0) * RotationX(0);
+ }
+
+ // mod placement
+ pv = envVol.placeVolume(mod_v, tr);
+ pv.addPhysVolID("module", i_mod);
+
+ auto mod_det_element = module_assembly_delements[mod_name].clone(mod_name + "__" + std::to_string(i_mod));
+ mod_det_element.setPlacement(pv);
+ sdet.add(mod_det_element);
+
+ i_mod++;
}
- // mod placement
- pv = envVol.placeVolume(mod_v, tr);
- pv.addPhysVolID("module", i_mod);
-
- auto mod_det_element = module_assembly_delements[mod_name].clone(mod_name + "__" + std::to_string(i_mod));
- mod_det_element.setPlacement(pv);
- sdet.add(mod_det_element);
- i_mod++;
}
// place envelope
- Volume motherVol = description.pickMotherVolume(sdet);
- PlacedVolume envPV = motherVol.placeVolume(envVol, Position(0, 0, zmin));
- envPV.addPhysVolID("system", x_det.id());
- sdet.setPlacement(envPV);
+ Volume motherVol = description.pickMotherVolume(sdet);
+ if (reflect) {
+ pv = motherVol.placeVolume(envVol, Transform3D(RotationZYX(0, M_PI, 0), Position(0, 0, -zpos)));
+ } else {
+ pv = motherVol.placeVolume(envVol, Transform3D(RotationZYX(0, 0, 0), Position(0, 0, +zpos)));
+ }
+ pv.addPhysVolID("system", x_det.id());
+ sdet.setPlacement(pv);
return sdet;
}
--
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