From 579ca7b220535e34b08f7d7a1aa4906c7a061203 Mon Sep 17 00:00:00 2001
From: Wouter Deconinck <wouter.deconinck@umanitoba.ca>
Date: Sun, 12 Sep 2021 23:01:03 +0000
Subject: [PATCH] Resolve "mRICH alternative implementation"
---
compact/mrich.xml | 3 +-
compact/mrich_alt.xml | 112 ++++++++++
src/MRich_geo.cpp | 481 ++++++++++++++++++++++--------------------
3 files changed, 372 insertions(+), 224 deletions(-)
create mode 100644 compact/mrich_alt.xml
diff --git a/compact/mrich.xml b/compact/mrich.xml
index 91fce35e..703e620d 100644
--- a/compact/mrich.xml
+++ b/compact/mrich.xml
@@ -77,7 +77,8 @@
length="MRICHCarbonFrame_length">
<frame vis="AnlGray" thickness="MRICHCarbonFrame_thickness" material="CarbonFiber"/>
<aerogel vis="MRICH_aerogel_vis"
- length="MRICHAerogel_thickness" width="MRICHAerogel_width"
+ length="MRICHAerogel_thickness"
+ width="MRICHAerogel_width"
material="AerogelOptical">
<frame vis="MRICH_frame_vis" thickness="MRICHFoam_thickness" material="PolystyreneFoam" />
</aerogel>
diff --git a/compact/mrich_alt.xml b/compact/mrich_alt.xml
new file mode 100644
index 00000000..b12897eb
--- /dev/null
+++ b/compact/mrich_alt.xml
@@ -0,0 +1,112 @@
+<lccdd>
+ <comment> MRICH (alternative design) </comment>
+ <define>
+ <constant name="MRICH_rmin" value="10*cm"/>
+ <constant name="MRICH_rmax" value="BackwardPID_rmax"/>
+ <constant name="MRICH_length" value="BackwardPID_length"/>
+ <constant name="MRICH_zmin" value="BackwardPID_zmin"/>
+
+ <constant name="MRICHAerogel_thickness" value="30.0*mm"/>
+ <constant name="MRICHAerogel_width" value="126.5*mm"/>
+ <constant name="MRICHFoam_thickness" value="2*mm"/>
+ <constant name="MRICHFresnelLens_thickness" value="0.06*inch"/>
+ <constant name="MRICHAerogelLensGap_thickness" value="2*mm"/>
+ <constant name="MRICHPhotoDet_thickness" value="1.5*mm"/>
+ <constant name="MRICHPhotoDet_length" value="48.5*mm"/>
+ <constant name="MRICHGlassWindow_width" value="103.5*mm"/>
+ <constant name="MRICHGlassPhotoDet_thickness" value="5.0*mm"/>
+ <constant name="MRICHPhotoDetMCPlate_thickness" value="0.3*mm"/> <!-- FIXME: should be 1.2*mm with PyrexGlass25 -->
+ <constant name="MRICHPhotoDetAnode_thickness" value="3.8*mm"/>
+ <constant name="MRICHPhotoDetPCB_thickness" value="2.0*mm"/>
+ <constant name="MRICHPhotoDetCopper_thickness" value="0.1*mm"/>
+ <constant name="MRICHPhotoDetKapton_thickness" value="0.2*mm"/>
+ <constant name="MRICHRearExtraSpace_thickness" value="0.3*mm"/>
+ <constant name="MRICHLensPhotoDet_length" value="136.4*mm"/>
+
+ <constant name="MRICHFresnelLensEffectiveDiameter" value="6.0*inch"/>
+ <constant name="MRICHFresnelLensGroove_pitch" value="inch/125"/>
+
+ <constant name="MRICHCarbonFrame_thickness" value="1.0*mm"/>
+ <constant name="MRICHCarbonFrame_width" value="MRICHAerogel_width+2.0*MRICHFoam_thickness + 2.0*MRICHCarbonFrame_thickness"/>
+
+ <constant name="MRICHModules_nx" value="floor((MRICH_rmax-MRICH_rmin)/MRICHCarbonFrame_width)"/>
+ <constant name="MRICHModules_ny" value="floor((MRICH_rmax-MRICH_rmin)/MRICHCarbonFrame_width)"/>
+
+ <constant name="MRICHCarbonFrame_length"
+ value="MRICHAerogel_thickness
+ + 2.0*MRICHCarbonFrame_thickness
+ + 2.0*MRICHFoam_thickness
+ + MRICHAerogelLensGap_thickness
+ + MRICHFresnelLens_thickness
+ + MRICHLensPhotoDet_length
+ + MRICHGlassPhotoDet_thickness
+ + 2.0*MRICHPhotoDetMCPlate_thickness
+ + MRICHPhotoDetAnode_thickness
+ + MRICHPhotoDetPCB_thickness
+ + MRICHPhotoDetCopper_thickness
+ + MRICHPhotoDetKapton_thickness
+ + MRICHRearExtraSpace_thickness "/>
+ </define>
+
+ <limits>
+ </limits>
+
+ <regions>
+ </regions>
+
+ <display>
+ </display>
+
+ <detectors>
+ <detector id="MRICH_ID" name="MRICH" type="athena_MRICH"
+ readout="MRICHHits"
+ reflect="true"
+ projective="false"
+ vis="InvisibleWithDaughters"
+ material="Air">
+ <dimensions rmin="MRICH_rmin" rmax="MRICH_rmax" length="abs(MRICH_length)" zmin="MRICH_zmin"/>
+ <envelope thickness="MRICHCarbonFrame_thickness" material="CarbonFiber"/>
+ <module name="MRICH_module1"
+ vis="InvisibleWithDaughters"
+ width="MRICHCarbonFrame_width"
+ height="MRICHCarbonFrame_width"
+ length="MRICHCarbonFrame_length">
+ <aerogel vis="MRICH_aerogel_vis"
+ length="MRICHAerogel_thickness"
+ width="MRICHAerogel_width"
+ material="AerogelOptical">
+ <frame vis="MRICH_frame_vis" thickness="MRICHFoam_thickness" material="PolystyreneFoam" />
+ </aerogel>
+ <lens vis="MRICH_lens_vis" thickness="MRICHFresnelLens_thickness"
+ pitch="MRICHFresnelLensGroove_pitch" focal_length="6.0*inch"
+ effective_diameter="MRICHFresnelLensEffectiveDiameter"
+ width="MRICHAerogel_width"
+ material="AcrylicOptical"/>
+ <space thickness="MRICHLensPhotoDet_length"/>
+ <photodet width="MRICHGlassWindow_width" thickness="MRICHGlassPhotoDet_thickness" material="PyrexGlassOptical">
+ <sensor nx="2" ny="2" thickness="MRICHPhotoDet_thickness" width="MRICHPhotoDet_length" material="SiliconOxide"/>
+ <layer thickness="MRICHPhotoDetMCPlate_thickness" material="PyrexGlass"/> <!-- FIXME: should be PyrexGlass25 with 1.2*mm thickness -->
+ <layer thickness="MRICHPhotoDetMCPlate_thickness" material="PyrexGlass"/> <!-- FIXME: should be PyrexGlass25 with 1.2*mm thickness -->
+ <layer thickness="MRICHPhotoDetAnode_thickness" material="AluminumOxide"/>
+ <layer thickness="MRICHPhotoDetPCB_thickness" material="Fr4"/>
+ <layer thickness="MRICHPhotoDetCopper_thickness" material="Copper"/>
+ <layer thickness="MRICHPhotoDetKapton_thickness" material="Kapton"/>
+ </photodet>
+ </module>
+ </detector>
+ </detectors>
+
+ <readouts>
+ <readout name="MRICHHits">
+ <segmentation type="CartesianGridXY" grid_size_x="3*mm" grid_size_y="3*mm" />
+ <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/src/MRich_geo.cpp b/src/MRich_geo.cpp
index e00c2ece..c3c98668 100644
--- a/src/MRich_geo.cpp
+++ b/src/MRich_geo.cpp
@@ -32,19 +32,6 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
sens.setType("photoncounter");
OpticalSurfaceManager surfMgr = description.surfaceManager();
- // read module positions
- std::vector<std::tuple<double,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_tuple(x_positions.scale() * x_position.x() * mm,
- x_positions.scale() * x_position.y() * mm,
- -x_positions.z0()));
- }
- }
-
bool projective = getAttrOrDefault(x_det, _Unicode(projective), false);
bool reflect = x_det.reflect(true);
@@ -57,6 +44,7 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
int n_sensor = 1;
+ // dimensions
xml::Component dims = x_det.dimensions();
auto rmin = dims.rmin();
auto rmax = dims.rmax();
@@ -64,6 +52,20 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
auto zmin = dims.zmin();
auto zpos = zmin + length / 2;
+ // envelope
+ Tube envShape(rmin, rmax, length / 2., 0., 2 * M_PI);
+ Volume envVol("MRICH_Envelope", envShape, air);
+ envVol.setVisAttributes(description.visAttributes(x_det.visStr()));
+ if (x_det.hasChild(_Unicode(envelope))) {
+ xml_comp_t x_envelope = x_det.child(_Unicode(envelope));
+ double thickness = x_envelope.thickness();
+ Material material = description.material(x_envelope.materialStr());
+ Tube envInsideShape(rmin + thickness, rmax - thickness, length / 2. - thickness);
+ SubtractionSolid envShellShape(envShape, envInsideShape);
+ Volume envShell("MRICH_Envelope_Inside", envShellShape, material);
+ envVol.placeVolume(envShell);
+ }
+
// expect only one module (for now)
xml_comp_t x_mod = x_det.child(_U(module));
string mod_name = x_mod.nameStr();
@@ -71,200 +73,231 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
double mod_height = getAttrOrDefault(x_mod, _U(height), 130.0 * mm);
double mod_length = getAttrOrDefault(x_mod, _U(length), 130.0 * mm);
- // various components
- xml_comp_t x_frame = x_mod.child(_Unicode(frame));
- xml_comp_t x_aerogel = x_mod.child(_Unicode(aerogel));
- xml_comp_t x_lens = x_mod.child(_Unicode(lens));
- xml_comp_t x_mirror = x_mod.child(_Unicode(mirror));
- xml_comp_t x_photodet = x_mod.child(_Unicode(photodet));
-
// module
Box m_solid(mod_width / 2.0, mod_height / 2.0, mod_length / 2.0);
Volume m_volume(mod_name, m_solid, air);
m_volume.setVisAttributes(description.visAttributes(x_mod.visStr()));
DetElement mod_de( mod_name + std::string("_mod_") + std::to_string(1), 1);
+ double z_placement = - mod_length / 2.0;
// todo module frame
- double frame_thickness = getAttrOrDefault(x_frame, _U(thickness), 2.0 * mm);
- Box frame_inside(mod_width / 2.0 - frame_thickness, mod_height / 2.0 - frame_thickness, mod_length / 2.0 - frame_thickness);
- SubtractionSolid frame_solid(m_solid, frame_inside);
- Material frame_mat = description.material(x_frame.materialStr());
- Volume frame_vol(mod_name+"_frame", frame_solid, frame_mat);
- auto frame_vis = getAttrOrDefault<std::string>(x_frame, _U(vis), std::string("GrayVis"));
- frame_vol.setVisAttributes(description.visAttributes(frame_vis));
- m_volume.placeVolume(frame_vol);
+ if (x_mod.hasChild(_Unicode(frame))) {
+ xml_comp_t x_frame = x_mod.child(_Unicode(frame));
+ double frame_thickness = getAttrOrDefault(x_frame, _U(thickness), 2.0 * mm);
+ Box frame_inside(mod_width / 2.0 - frame_thickness, mod_height / 2.0 - frame_thickness, mod_length / 2.0 - frame_thickness);
+ SubtractionSolid frame_solid(m_solid, frame_inside);
+ Material frame_mat = description.material(x_frame.materialStr());
+ Volume frame_vol(mod_name+"_frame", frame_solid, frame_mat);
+ auto frame_vis = getAttrOrDefault<std::string>(x_frame, _U(vis), std::string("GrayVis"));
+ frame_vol.setVisAttributes(description.visAttributes(frame_vis));
+ // update position
+ z_placement += frame_thickness / 2.0;
+ // place volume
+ m_volume.placeVolume(frame_vol);
+ // update position
+ z_placement += frame_thickness / 2.0;
+ }
// aerogel box
- xml_comp_t x_aerogel_frame = x_aerogel.child(_Unicode(frame));
- double aerogel_width = getAttrOrDefault(x_aerogel, _U(width), 130.0 * mm);
- double aerogel_length = getAttrOrDefault(x_aerogel, _U(length), 130.0 * mm);
- double foam_thickness = getAttrOrDefault(x_aerogel_frame, _U(thickness), 2.0 * mm);
- Material foam_mat = description.material(x_aerogel_frame.materialStr());
- Material aerogel_mat = description.material(x_aerogel.materialStr());
- auto aerogel_vis = getAttrOrDefault<std::string>(x_aerogel, _U(vis), std::string("InvisibleWithDaughters"));
- auto foam_vis = getAttrOrDefault<std::string>(x_aerogel_frame, _U(vis), std::string("RedVis"));
-
- // aerogel foam frame
- Box foam_box(aerogel_width / 2.0 + foam_thickness, aerogel_width / 2.0 + foam_thickness, (aerogel_length + foam_thickness) / 2.0);
- Box aerogel_sub_box(aerogel_width / 2.0, aerogel_width / 2.0, (aerogel_length + foam_thickness) / 2.0);
- SubtractionSolid foam_frame_solid(foam_box, aerogel_sub_box, Position(0, 0, foam_thickness));
- Volume foam_vol(mod_name+"_aerogel_frame", foam_frame_solid, foam_mat);
- foam_vol.setVisAttributes(description.visAttributes(foam_vis));
- double foam_frame_zpos = -mod_length / 2.0 + frame_thickness + (aerogel_length + foam_thickness) / 2.0;
- m_volume.placeVolume(foam_vol,Position(0,0,foam_frame_zpos));
-
- // aerogel
- Box aerogel_box(aerogel_width / 2.0, aerogel_width / 2.0, (aerogel_length) / 2.0);
- Volume aerogel_vol(mod_name+"_aerogel", aerogel_box, aerogel_mat);
- aerogel_vol.setVisAttributes(description.visAttributes(aerogel_vis));
- double aerogel_zpos = foam_frame_zpos + foam_thickness / 2.0;
- pv = m_volume.placeVolume(aerogel_vol,Position(0,0,aerogel_zpos));
- DetElement aerogel_de(mod_de, mod_name + std::string("_aerogel_de") + std::to_string(1), 1);
- aerogel_de.setPlacement(pv);
-
- auto aerogel_surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_aerogel, _Unicode(surface), "MRICH_AerogelOpticalSurface"));
- SkinSurface skin0(description, aerogel_de, Form("MRICH_aerogel_skin_surface_%d", 1), aerogel_surf, aerogel_vol);
- skin0.isValid();
-
- // Fresnel Lens
- // - The lens has a constant groove pitch (delta r) as opposed to fixing the groove height.
- // - 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), 0.2 * 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), 152.4 * mm);
- double lens_width = getAttrOrDefault(x_lens, _Unicode(width), 6.7*2.54*cm);
- 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)); //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);
- double groove_last_rmin = (N_grooves - 1) * groove_pitch;
- double groove_last_rmax = N_grooves * groove_pitch;
-
- auto groove_sagitta = [&](double r) { return lens_curvature * std::pow(r, 2) / (1.0 + 1.0); };
- double lens_thickness = groove_sagitta(groove_last_rmax) - groove_sagitta(groove_last_rmin) + center_thickness;
-
- Material lens_mat = description.material(x_lens.materialStr());
- Box lens_box(lens_width / 2.0, lens_width / 2.0, (center_thickness) / 2.0);
- SubtractionSolid flat_lens(lens_box, Tube(0.0, full_ring_rmax, 2 * center_thickness));
-
- Assembly lens_vol(mod_name + "_lens");
- Volume flatpart_lens_vol( "flatpart_lens", flat_lens, lens_mat);
- lens_vol.placeVolume(flatpart_lens_vol);//,Position(0,0,lens_zpos));
-
- Solid fresnel_lens_solid;
-
- int i_groove = 0;
- double groove_rmax = groove_pitch;
- double groove_rmin = 0;
-
- while ( groove_rmax <= full_ring_rmax ) {
- double dZ = groove_sagitta(groove_rmax) - groove_sagitta(groove_rmin);
- 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);
- //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
- //Tube sub_cylinder(r0, r1, 3*eff_diameter);
- //IntersectionSolid groove_solid(lens_box,lens_sphere, Position(0,0,-eff_diameter/2.0 + lens_thickness/2.0+(t-lens_t)/2.0 ));
- //IntersectionSolid lens_ring(groove_solid, sub_cylinder);
- //if (i_groove == 0) {
- // fresnel_lens_solid = groove_solid;
- //} else {
- // fresnel_lens_solid = UnionSolid(fresnel_lens_solid, groove_solid);
- //}
- //r0 = r1;
- //if(i_groove > 3) {
- // SubtractionSolid flat_lens(lens_box,Tube(0.0, r0, 3*eff_diameter));
- // fresnel_lens_solid = UnionSolid(fresnel_lens_solid, flat_lens);
- // break; // temporary
- //}
- i_groove++;
- groove_rmin = (i_groove )*groove_pitch;
- groove_rmax = (i_groove+1)*groove_pitch;
+ if (x_mod.hasChild(_Unicode(aerogel))) {
+ xml_comp_t x_aerogel = x_mod.child(_Unicode(aerogel));
+ double aerogel_width = getAttrOrDefault(x_aerogel, _U(width), 130.0 * mm);
+ double aerogel_length = getAttrOrDefault(x_aerogel, _U(length), 130.0 * mm);
+ Material aerogel_mat = description.material(x_aerogel.materialStr());
+ auto aerogel_vis = getAttrOrDefault<std::string>(x_aerogel, _U(vis), std::string("InvisibleWithDaughters"));
+
+ xml_comp_t x_aerogel_frame = x_aerogel.child(_Unicode(frame));
+ double foam_thickness = getAttrOrDefault(x_aerogel_frame, _U(thickness), 2.0 * mm);
+ Material foam_mat = description.material(x_aerogel_frame.materialStr());
+ auto foam_vis = getAttrOrDefault<std::string>(x_aerogel_frame, _U(vis), std::string("RedVis"));
+
+ // foam frame
+ Box foam_box(aerogel_width / 2.0 + foam_thickness, aerogel_width / 2.0 + foam_thickness, (aerogel_length + foam_thickness) / 2.0);
+ Box foam_sub_box(aerogel_width / 2.0, aerogel_width / 2.0, (aerogel_length + foam_thickness) / 2.0);
+ SubtractionSolid foam_frame_solid(foam_box, foam_sub_box, Position(0, 0, foam_thickness));
+ Volume foam_vol(mod_name+"_aerogel_frame", foam_frame_solid, foam_mat);
+ foam_vol.setVisAttributes(description.visAttributes(foam_vis));
+
+ // aerogel
+ Box aerogel_box(aerogel_width / 2.0, aerogel_width / 2.0, (aerogel_length) / 2.0);
+ Volume aerogel_vol(mod_name+"_aerogel", aerogel_box, aerogel_mat);
+ aerogel_vol.setVisAttributes(description.visAttributes(aerogel_vis));
+
+ // update position
+ z_placement += (aerogel_length + foam_thickness) / 2.0;
+ // place foam frame
+ pv = m_volume.placeVolume(foam_vol,Position(0,0,z_placement));
+ // place aerogel
+ z_placement += foam_thickness / 2.0;
+ pv = m_volume.placeVolume(aerogel_vol,Position(0,0,z_placement));
+ DetElement aerogel_de(mod_de, mod_name + std::string("_aerogel_de") + std::to_string(1), 1);
+ aerogel_de.setPlacement(pv);
+ // update position
+ z_placement += aerogel_length / 2.0;
+
+ // optical surfaces
+ auto aerogel_surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_aerogel, _Unicode(surface), "MRICH_AerogelOpticalSurface"));
+ SkinSurface skin_surf(description, aerogel_de, Form("MRICH_aerogel_skin_surface_%d", 1), aerogel_surf, aerogel_vol);
+ skin_surf.isValid();
}
- //fresnel_lens_solid = UnionSolid(fresnel_lens_solid, flat_lens);
- //Volume lens_vol(mod_name + "_lens", fresnel_lens_solid, lens_mat);
+ // Fresnel Lens
+ if (x_mod.hasChild(_Unicode(lens))) {
+ xml_comp_t x_lens = x_mod.child(_Unicode(lens));
+
+ // - The lens has a constant groove pitch (delta r) as opposed to fixing the groove height.
+ // - 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), 0.2 * 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), 152.4 * mm);
+ double lens_width = getAttrOrDefault(x_lens, _Unicode(width), 6.7*2.54*cm);
+ 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)); //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);
+ double groove_last_rmin = (N_grooves - 1) * groove_pitch;
+ double groove_last_rmax = N_grooves * groove_pitch;
+
+ auto groove_sagitta = [&](double r) { return lens_curvature * std::pow(r, 2) / (1.0 + 1.0); };
+ double lens_thickness = groove_sagitta(groove_last_rmax) - groove_sagitta(groove_last_rmin) + center_thickness;
+
+ Material lens_mat = description.material(x_lens.materialStr());
+ Box lens_box(lens_width / 2.0, lens_width / 2.0, (center_thickness) / 2.0);
+ SubtractionSolid flat_lens(lens_box, Tube(0.0, full_ring_rmax, 2 * center_thickness));
+
+ Assembly lens_vol(mod_name + "_lens");
+ Volume flatpart_lens_vol( "flatpart_lens", flat_lens, lens_mat);
+ lens_vol.placeVolume(flatpart_lens_vol);
+
+ int i_groove = 0;
+ double groove_rmax = groove_pitch;
+ double groove_rmin = 0;
+
+ while ( groove_rmax <= full_ring_rmax ) {
+ double dZ = groove_sagitta(groove_rmax) - groove_sagitta(groove_rmin);
+ 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);
+
+ i_groove++;
+ groove_rmin = (i_groove )*groove_pitch;
+ groove_rmax = (i_groove+1)*groove_pitch;
+ }
- lens_vol.setVisAttributes(description.visAttributes(lens_vis));
- double lens_zpos = aerogel_zpos +aerogel_length/ 2.0 + foam_thickness + lens_thickness/2.0;
- pv = m_volume.placeVolume(lens_vol,Position(0,0,lens_zpos));
- DetElement lens_de(mod_de, mod_name + std::string("_lens_de") + std::to_string(1), 1);
- lens_de.setPlacement(pv);
+ lens_vol.setVisAttributes(description.visAttributes(lens_vis));
+
+ // update position
+ z_placement += lens_thickness/2.0;
+ // place volume
+ pv = m_volume.placeVolume(lens_vol,Position(0,0,z_placement));
+ DetElement lens_de(mod_de, mod_name + std::string("_lens_de") + std::to_string(1), 1);
+ lens_de.setPlacement(pv);
+ // update position
+ z_placement += lens_thickness/2.0;
+
+ // optical surfaces
+ auto lens_surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_lens, _Unicode(surface), "MRICH_LensOpticalSurface"));
+ SkinSurface skin_surf(description, lens_de, Form("MRichFresnelLens_skin_surface_%d", 1), lens_surf, lens_vol);
+ skin_surf.isValid();
+ }
- auto surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_lens, _Unicode(surface), "MRICH_LensOpticalSurface"));
- SkinSurface skin(description, lens_de, Form("MRichFresnelLens_skin_surface_%d", 1), surf, lens_vol);
- skin.isValid();
+ // mirror
+ if (x_mod.hasChild(_Unicode(space))) {
+ xml_comp_t x_space = x_mod.child(_Unicode(space));
+ z_placement += getAttrOrDefault(x_space, _U(thickness), 0.0 * mm);
+ }
// mirror
- auto mirror_vis = getAttrOrDefault<std::string>(x_mirror, _U(vis), std::string("AnlGray"));
- double mirror_x1 = getAttrOrDefault(x_mirror, _U(x1), 100.0 * mm);
- double mirror_x2 = getAttrOrDefault(x_mirror, _U(x2), 80.0 * mm);
- double mirror_length = getAttrOrDefault(x_mirror, _U(length), 130.0 * mm);
- double mirror_thickness = getAttrOrDefault(x_mirror, _U(thickness), 2.0 * mm);
- double outer_x1 = (mirror_x1+mirror_thickness)/2.0;
- double outer_x2 = (mirror_x2+mirror_thickness)/2.0;
- Trd2 outer_mirror_trd(outer_x1, outer_x2, outer_x1, outer_x2, mirror_length/2.0);
- Trd2 inner_mirror_trd(mirror_x1 / 2.0, mirror_x2 / 2.0, mirror_x1 / 2.0,mirror_x2 / 2.0, mirror_length/2.0+0.1*mm);
- SubtractionSolid mirror_solid(outer_mirror_trd, inner_mirror_trd);
- Material mirror_mat = description.material(x_mirror.materialStr());
- Volume mirror_vol(mod_name+"_mirror", mirror_solid, mirror_mat);
- double mirror_zpos = lens_zpos + lens_thickness/2.0 + foam_thickness + mirror_length/2.0;
- pv = m_volume.placeVolume(mirror_vol,Position(0,0,mirror_zpos));
- DetElement mirror_de(mod_de, mod_name + std::string("_mirror_de") + std::to_string(1), 1);
- mirror_de.setPlacement(pv);
-
- auto mirror_surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_mirror, _Unicode(surface), "MRICH_MirrorOpticalSurface"));
- SkinSurface skin1(description, mirror_de, Form("MRICH_mirror_skin_surface_%d", 1), mirror_surf, mirror_vol);
- skin1.isValid();
+ if (x_mod.hasChild(_Unicode(mirror))) {
+ xml_comp_t x_mirror = x_mod.child(_Unicode(mirror));
+ auto mirror_vis = getAttrOrDefault<std::string>(x_mirror, _U(vis), std::string("AnlGray"));
+ double mirror_x1 = getAttrOrDefault(x_mirror, _U(x1), 100.0 * mm);
+ double mirror_x2 = getAttrOrDefault(x_mirror, _U(x2), 80.0 * mm);
+ double mirror_length = getAttrOrDefault(x_mirror, _U(length), 130.0 * mm);
+ double mirror_thickness = getAttrOrDefault(x_mirror, _U(thickness), 2.0 * mm);
+ double outer_x1 = (mirror_x1+mirror_thickness)/2.0;
+ double outer_x2 = (mirror_x2+mirror_thickness)/2.0;
+ Trd2 outer_mirror_trd(outer_x1, outer_x2, outer_x1, outer_x2, mirror_length/2.0);
+ Trd2 inner_mirror_trd(mirror_x1 / 2.0, mirror_x2 / 2.0, mirror_x1 / 2.0,mirror_x2 / 2.0, mirror_length/2.0+0.1*mm);
+ SubtractionSolid mirror_solid(outer_mirror_trd, inner_mirror_trd);
+ Material mirror_mat = description.material(x_mirror.materialStr());
+ Volume mirror_vol(mod_name+"_mirror", mirror_solid, mirror_mat);
+
+ // update position
+ z_placement += mirror_length/2.0;
+ // place volume
+ pv = m_volume.placeVolume(mirror_vol,Position(0,0,z_placement));
+ DetElement mirror_de(mod_de, mod_name + std::string("_mirror_de") + std::to_string(1), 1);
+ mirror_de.setPlacement(pv);
+ // update position
+ z_placement += mirror_length/2.0;
+
+ // optical surfaces
+ auto mirror_surf = surfMgr.opticalSurface(dd4hep::getAttrOrDefault(x_mirror, _Unicode(surface), "MRICH_MirrorOpticalSurface"));
+ SkinSurface skin_surf(description, mirror_de, Form("MRICH_mirror_skin_surface_%d", 1), mirror_surf, mirror_vol);
+ skin_surf.isValid();
+ }
// photon detector
- xml_comp_t x_photodet_sensor = x_photodet.child(_Unicode(sensor));
- auto photodet_vis = getAttrOrDefault<std::string>(x_photodet, _U(vis), std::string("AnlRed"));
- double photodet_width = getAttrOrDefault(x_photodet, _U(width), 130.0 * mm);
- double photodet_thickness = getAttrOrDefault(x_photodet, _U(thickness), 2.0 * mm);
- double sensor_thickness = getAttrOrDefault(x_photodet_sensor, _U(thickness), 2.0 * mm);
- Material photodet_mat = description.material(x_photodet.materialStr());
- Material sensor_mat = description.material(x_photodet_sensor.materialStr());
- int sensor_nx = getAttrOrDefault(x_photodet_sensor, _Unicode(nx), 2);
- int sensor_ny = getAttrOrDefault(x_photodet_sensor, _Unicode(ny), 2);
-
- 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);
- 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++;
+ if (x_mod.hasChild(_Unicode(photodet))) {
+ xml_comp_t x_photodet = x_mod.child(_Unicode(photodet));
+ auto photodet_vis = getAttrOrDefault<std::string>(x_photodet, _U(vis), std::string("AnlRed"));
+ double photodet_width = getAttrOrDefault(x_photodet, _U(width), 130.0 * mm);
+ double photodet_thickness = getAttrOrDefault(x_photodet, _U(thickness), 2.0 * mm);
+ Material photodet_mat = description.material(x_photodet.materialStr());
+ 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);
+
+ // update position
+ z_placement += photodet_thickness/2.0;
+ // place volume
+ pv = m_volume.placeVolume(window_vol,Position(0,0,z_placement));
+ DetElement comp_de(mod_de, mod_name + std::string("_sensor_de_") + std::to_string(1) , 1);
+ comp_de.setPlacement(pv);
+ // update position
+ z_placement += photodet_thickness/2.0;
+
+ // sensitive
+ pv.addPhysVolID("sensor", n_sensor);
+ window_vol.setSensitiveDetector(sens);
+ sensitives[mod_name].push_back(pv);
+ ++n_sensor;
+
+ // sensor
+ xml_comp_t x_sensor = x_photodet.child(_Unicode(sensor));
+ double sensor_thickness = getAttrOrDefault(x_sensor, _U(thickness), 2.0 * mm);
+ Material sensor_mat = description.material(x_sensor.materialStr());
+ int sensor_nx = getAttrOrDefault(x_sensor, _Unicode(nx), 2);
+ int sensor_ny = getAttrOrDefault(x_sensor, _Unicode(ny), 2);
+
+ // layers
+ 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);
+
+ // update position
+ z_placement += layer_thickness / 2.0;
+ // place volume
+ pv = m_volume.placeVolume(layer_vol,Position(0,0,z_placement));
+ DetElement layer_de(mod_de, mod_name + std::string("_layer_de_") + std::to_string(i_layer), 1);
+ layer_de.setPlacement(pv);
+ // update position
+ z_placement += layer_thickness / 2.0;
+
+ i_layer++;
+ }
}
//for (size_t ic = 0; ic < sensVols.size(); ++ic) {
@@ -285,11 +318,6 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
module_assembly_delements[mod_name] = mod_de;
// end module
- // detector envelope
- Tube envShape(rmin, rmax, length / 2., 0., 2 * M_PI);
- Volume envVol("MRICH_Envelope", envShape, air);
- envVol.setVisAttributes(description.visAttributes(x_det.visStr()));
-
// place modules in the sectors (disk)
auto points = athena::geo::fillSquares({0., 0.}, mod_width, rmin, rmax);
@@ -299,6 +327,29 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
// determine module direction, always facing z = 0
double roty = dims.zmin() < 0. ? -M_PI : 0 ;
+ // read module positions
+ std::vector<std::tuple<double,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_tuple(x_positions.scale() * x_position.x() * mm,
+ x_positions.scale() * x_position.y() * mm,
+ -x_positions.z0()));
+ }
+ }
+ // if no positions, then autoplacement
+ if (positions.empty()) {
+ for (double x = mod_width / 2.0; x < rmax - mod_width / 2.0; x += mod_width) {
+ for (double y = mod_width / 2.0; y < rmax - mod_width / 2.0; y += mod_width) {
+ if (pow(x + mod_width / 2.0,2) + pow(y + mod_width / 2.0,2) > rmax*rmax) continue;
+ if (pow(x - mod_width / 2.0,2) + pow(y - mod_width / 2.0,2) < rmin*rmin) continue;
+ positions.push_back(std::make_tuple(x, y, 0));
+ }
+ }
+ }
+
// place modules
int i_mod = 1; // starts at 1
for (auto& p: positions) {
@@ -316,29 +367,11 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
double y = std::get<1>(p);
double z0 = std::get<2>(p);
- // get angles
- double rotAngX = atan(y/z0);
- double rotAngY = -1.*atan(x/z0);
-
- /*
- 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);
+ double rotAngX = atan(y/z0);
+ double rotAngY = -1.*atan(x/z0);
+ tr = Translation3D(x, y, 0) * RotationX(rotAngX) * RotationY(rotAngY);
} else {
tr = Translation3D(x, y, 0) * RotationX(0);
}
@@ -355,13 +388,15 @@ static Ref_t createDetector(Detector& description, xml::Handle_t e, SensitiveDet
}
}
- // place frame
- xml_comp_t x_layer = x_det.child(_Unicode(layer));
- double layer_thickness = x_layer.thickness();
- Material layer_mat = description.material(x_layer.materialStr());
- Tube frameShape(rmin, rmax, layer_thickness / 2., 0., 2 * M_PI);
- Volume frameVol("MRICH_Frame", frameShape, layer_mat);
- pv = envVol.placeVolume(frameVol, Position(0, 0, (length - layer_thickness) / 2.0));
+ // additional layers
+ if (x_det.hasChild(_Unicode(layer))) {
+ xml_comp_t x_layer = x_det.child(_Unicode(layer));
+ double layer_thickness = x_layer.thickness();
+ Material layer_mat = description.material(x_layer.materialStr());
+ Tube frameShape(rmin, rmax, layer_thickness / 2., 0., 2 * M_PI);
+ Volume frameVol("MRICH_Frame", frameShape, layer_mat);
+ pv = envVol.placeVolume(frameVol, Position(0, 0, (length - layer_thickness) / 2.0));
+ }
// place envelope
Volume motherVol = description.pickMotherVolume(sdet);
--
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