Adding FCC-SEED as option to all detectors and refactor IDEA/ALLEGRO vertex detector

CMakeLists.txt

@@ -44,6 +44,7 @@ ENDIF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
 option(BUILD_TESTING "Enable and build tests" ON)
 option(INSTALL_COMPACT_FILES "Copy compact files to install area" OFF)
 option(INSTALL_BEAMPIPE_STL_FILES "Download CAD files for building the detailed beampipe" OFF)
+option(INSTALL_VERTEX_STL_FILES "Download CAD files for IDEA vertex detector" OFF)
 
 #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
@@ -223,3 +224,46 @@ if(INSTALL_BEAMPIPE_STL_FILES)
     INSTALL(DIRECTORY ${OUTPUT_DIR} DESTINATION share/k4geo/FCCee/MDI/compact/stl_files )
 
 endif()
+
+if(INSTALL_VERTEX_STL_FILES)
+
+    file(MAKE_DIRECTORY share/k4geo/FCCee)
+
+    set(STL_FILES
+          "VertexCoolingCones_o1_v03.stl"
+          "VertexSupport_CarbonFiber_o1_v03.stl"
+          "VertexSupport_PEEK_o1_v03.stl"
+        )
+    # Set main FCC url
+    set(FCC_URL "https://fccsw.web.cern.ch/fccsw/filesForSimDigiReco")
+    set(STL_PATH "IDEA/IDEA_o1_v03/STL_FILES")
+
+    # Set the output directory where the file will be placed
+    set(OUTPUT_DIR "${PROJECT_SOURCE_DIR}/FCCee/IDEA/compact/IDEA_o1_v03/")
+
+    foreach(STL_FILE ${STL_FILES})
+        set(FULL_URL "${FCC_URL}/${STL_PATH}/${STL_FILE}")
+        message(DEBUG "Downloading file ${FULL_URL}")
+        set(OUTPUT_FILE "${OUTPUT_DIR}/${STL_FILE}")
+
+        if(EXISTS "${OUTPUT_FILE}")
+          message(STATUS "File ${STL_FILE} already exists. Skipping download.")
+        else()
+          # Download the file
+          file(DOWNLOAD ${FULL_URL} ${OUTPUT_FILE}
+            SHOW_PROGRESS
+            STATUS download_status)
+
+          list(GET download_status 0 status_code)
+          if(NOT status_code EQUAL 0)
+              list(GET download_status 1 error_message)
+              message(FATAL_ERROR "Failed to download file: ${error_message}")
+          endif()
+        endif()
+
+        install(
+            FILES "${OUTPUT_DIR}/${STL_FILE}"
+            DESTINATION share/k4geo/FCCee/IDEA/compact/IDEA_o1_v03/stl_files
+        )
+    endforeach()
+endif()

FCCee/ALLEGRO/compact/ALLEGRO_o1_v03/DectDimensions.xml

@@ -24,6 +24,7 @@
 
     <constant name="DetID_VXD_Barrel"             value=" 1"/>
     <constant name="DetID_VXD_Disks"              value=" 2"/>
+    <constant name="DetID_VXD_OuterBarrel"        value=" 31"/>
 
     <constant name="DetID_DCH"                    value=" 3"/>
 
@@ -83,10 +84,12 @@
     <constant name="VertexAcceptanceLimit"  value="0.125*rad"/>   <!-- Acceptance limit of vertex detector, used to define number of modules per stave  -->
     <constant name="VTXIB_r_min_layer"      value="13.7*mm"/>     <!-- Start of inner vertex detector layers. To keep distance of 1.3 mm from outer beam pipe end (10+0.35+1+0.35 mm = 11.7 mm). This changes to 13.7 mm due to cooling issues (see https://indico.cern.ch/event/1176398/contributions/5207171/attachments/2581129/4451907/Krakow%202023_v23_final.pdf). 
                                                                        Radius can be reduced down to the beam pipe outer radius, changing automatically the number of modules used.  -->
+    <constant name="VTXIB_SEED_Kapton_beampipe_thickness" value="0.1*mm"/> <!-- Thickness of the Kapton layer on the beampipe. Kapton layer is used if Vertex_inner_radius+VTXIB_SEED_Kapton_beampipe_thickness = VTXIB_r_min_layer -->
     <constant name="VTXIB_r_min_clearance"  value="(VTXIB_r_min_layer-CentralBeamPipe_rmax-BeamPipeWidth)/2."/>    <!-- Clearance of vertex detector in radius, used for definiton of vertex DD4hep_SubdetectorAssembly -->
     <constant name="VTXIB_r_max_layer"      value="34.0*mm"/>     <!-- Position of the outermost vertex inner barrel layer -->
     <constant name="VTXIB_r_max"            value="50.0*mm"/>     <!-- End of inner vertex = outer radius of inner vertex tube -->
     <constant name="VTXIB_half_length"      value="556.2/2.*mm"/> <!-- 278.1*mm, half length of inner vertex tube -->
+    <constant name="VTXIB_tube_thickness"   value="0.2*mm"/>      <!-- Thickness of the inner vertex tube needed for air-cooling -->
 
     <constant name="VTXOB_r_min_layer"    value="130*mm"/>        <!-- R of the innermost layer of the outer vertex -->
     <constant name="VTXOB_r_max_layer"    value="315*mm"/>        <!-- R of the outermost layer of the outer vertex -->
@@ -103,6 +106,13 @@
     <constant name="VTX_r_max" value="VTXOB_r_max_layer+VTXOB_rmax_clearance"/>   <!-- Not used, just do indicate the vertex detector envelope limits -->
     <constant name="VTX_z_max" value="VTXD_z_max_total"/>                         <!-- Not used, just do indicate the vertex detector envelope limits -->
 
+    <constant name="VTXIB_pitch_z"      value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXIB_pitch_phi"    value="0.020*mm"/>
+    <constant name="VTXOB_pitch_z"      value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXOB_pitch_phi"    value="0.020*mm"/>
+    <constant name="VTXD_pitch_r"       value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXD_pitch_phi"     value="0.020*mm"/>
+
     <!--  Drift Chamber parameters    -->
     <!-- Changing the radius is not enough to resize the detector, please contact the experts-->
     <constant name="DCH_inner_cyl_R_total"          value=" 349.8  * mm "  />
@@ -123,17 +133,17 @@
     <constant name="SiWrD_inner_radius" value="350.0*mm"/>  <!-- Can be freely changed. Must be smaller than 'SiWrB_inner_radius' -->
     <constant name="SiWrD_outer_radius" value="2040.0*mm"/> <!-- Can be freely changed. Must be larger than 'SiWrD_inner_radius' and SiWrD_outer_radius-SiWrD_inner_radius must be smaller than ~ 2450 mm, otherwise the number of available rings is not large enough to cover the whole area -->
     <constant name="SiWrD_services_opening"  value="30*mm"/><!-- Can be freely changed. -->
-    <constant name="SiWr_nLayers"       value="2"/>         <!-- Can be either 1 or 2 -->
+    <constant name="SiWr_nLayers"       value="1"/>         <!-- Can be either 1 or 2 -->
     <constant name="SiWrD_zmin"         value="3020.0*mm"/> <!-- Can be freely changed, as long as SiWrD_zmax-SiWrD_zmin is >7cm (SiWr_nLayers=2) or >=5cm (SiWr_nLayers=1) -->
     <constant name="SiWrD_zmax"         value="3090.0*mm"/> <!-- Can be freely changed, as long as SiWrD_zmax-SiWrD_zmin is kept constant or is increased -->
-    <constant name="SiWrB_pitch_z0"     value="1.000*mm"/>  <!-- The pitches can be freely changed and can be different for the two layers. These pitches here are just an assumption, impact on physics needs to be studied in detail! -->
+    <constant name="SiWrB_pitch_z0"     value="0.050*mm"/>  <!-- The pitches can be freely changed and can be different for the two layers. These pitches here are just an assumption, impact on physics needs to be studied in detail! Currently assuming 50x50 um2 pixels, AC-LGADs or MAPS -->
     <constant name="SiWrB_pitch_z1"     value="0.050*mm"/>
     <constant name="SiWrB_pitch_phi0"   value="0.050*mm"/>
-    <constant name="SiWrB_pitch_phi1"   value="1.000*mm"/>
-    <constant name="SiWrD_pitch_r0"     value="1.000*mm"/>
+    <constant name="SiWrB_pitch_phi1"   value="0.050*mm"/>
+    <constant name="SiWrD_pitch_r0"     value="0.050*mm"/>
     <constant name="SiWrD_pitch_r1"     value="0.050*mm"/>
     <constant name="SiWrD_pitch_phi0"   value="0.050*mm"/>
-    <constant name="SiWrD_pitch_phi1"   value="1.000*mm"/>
+    <constant name="SiWrD_pitch_phi1"   value="0.050*mm"/>
 
     <!-- LAr ECAL Calo Barrel -->
     <constant name="BarECal_id" value="DetID_ECAL_Barrel"/>
@@ -254,8 +264,8 @@
   </limits>
   <regions>
     <region name="BeampipeRegion"/>
-    <region name="VTXBRegion"/>
-    <region name="VTXDRegion"/>
+    <region name="VertexBarrelRegion"/>
+    <region name="VertexEndcapRegion"/>
     <region name="SiWrBRegion"/>
     <region name="SiWrDRegion"/>
   </regions>

FCCee/ALLEGRO/compact/ALLEGRO_o2_v01/DectDimensions.xml

@@ -24,6 +24,7 @@
 
     <constant name="DetID_VXD_Barrel"             value=" 1"/>
     <constant name="DetID_VXD_Disks"              value=" 2"/>
+    <constant name="DetID_VXD_OuterBarrel"        value=" 31"/>
 
     <constant name="DetID_STT"                    value=" 3"/>
 
@@ -83,10 +84,12 @@
     <constant name="VertexAcceptanceLimit"  value="0.125*rad"/>   <!-- Acceptance limit of vertex detector, used to define number of modules per stave  -->
     <constant name="VTXIB_r_min_layer"      value="13.7*mm"/>     <!-- Start of inner vertex detector layers. To keep distance of 1.3 mm from outer beam pipe end (10+0.35+1+0.35 mm = 11.7 mm). This changes to 13.7 mm due to cooling issues (see https://indico.cern.ch/event/1176398/contributions/5207171/attachments/2581129/4451907/Krakow%202023_v23_final.pdf). 
                                                                        Radius can be reduced down to the beam pipe outer radius, changing automatically the number of modules used.  -->
+    <constant name="VTXIB_SEED_Kapton_beampipe_thickness" value="0.1*mm"/> <!-- Thickness of the Kapton layer on the beampipe. Kapton layer is used if Vertex_inner_radius+VTXIB_SEED_Kapton_beampipe_thickness = VTXIB_r_min_layer -->
     <constant name="VTXIB_r_min_clearance"  value="(VTXIB_r_min_layer-CentralBeamPipe_rmax-BeamPipeWidth)/2."/>    <!-- Clearance of vertex detector in radius, used for definiton of vertex DD4hep_SubdetectorAssembly -->
     <constant name="VTXIB_r_max_layer"      value="34.0*mm"/>     <!-- Position of the outermost vertex inner barrel layer -->
     <constant name="VTXIB_r_max"            value="50.0*mm"/>     <!-- End of inner vertex = outer radius of inner vertex tube -->
     <constant name="VTXIB_half_length"      value="556.2/2.*mm"/> <!-- 278.1*mm, half length of inner vertex tube -->
+    <constant name="VTXIB_tube_thickness"   value="0.2*mm"/>      <!-- Thickness of the inner vertex tube needed for air-cooling -->
 
     <constant name="VTXOB_r_min_layer"    value="130*mm"/>        <!-- R of the innermost layer of the outer vertex -->
     <constant name="VTXOB_r_max_layer"    value="315*mm"/>        <!-- R of the outermost layer of the outer vertex -->
@@ -103,6 +106,13 @@
     <constant name="VTX_r_max" value="VTXOB_r_max_layer+VTXOB_rmax_clearance"/>   <!-- Not used, just do indicate the vertex detector envelope limits -->
     <constant name="VTX_z_max" value="VTXD_z_max_total"/>                         <!-- Not used, just do indicate the vertex detector envelope limits -->
 
+    <constant name="VTXIB_pitch_z"      value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXIB_pitch_phi"    value="0.020*mm"/>
+    <constant name="VTXOB_pitch_z"      value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXOB_pitch_phi"    value="0.020*mm"/>
+    <constant name="VTXD_pitch_r"       value="0.020*mm"/>  <!-- Assume 20x20 µm pitch, DRD3 OCTOPUS-like sensors -->
+    <constant name="VTXD_pitch_phi"     value="0.020*mm"/>
+
     <!--  Straw tracker parameters    -->
     <constant name="STT_inner_cyl_R_total"          value=" 349.8  * mm "  />
     <constant name="STT_outer_cyl_R_total"          value=" 2015   * mm "  />    
@@ -115,17 +125,17 @@
     <constant name="SiWrD_inner_radius" value="350.0*mm"/>  <!-- Can be freely changed. Must be smaller than 'SiWrB_inner_radius' -->
     <constant name="SiWrD_outer_radius" value="2040.0*mm"/> <!-- Can be freely changed. Must be larger than 'SiWrD_inner_radius' and SiWrD_outer_radius-SiWrD_inner_radius must be smaller than ~ 2450 mm, otherwise the number of available rings is not large enough to cover the whole area -->
     <constant name="SiWrD_services_opening"  value="30*mm"/><!-- Can be freely changed. -->
-    <constant name="SiWr_nLayers"       value="2"/>         <!-- Can be either 1 or 2 -->
+    <constant name="SiWr_nLayers"       value="1"/>         <!-- Can be either 1 or 2 -->
     <constant name="SiWrD_zmin"         value="2930.0*mm"/> <!-- Can be freely changed, as long as SiWrD_zmax-SiWrD_zmin is >7cm (SiWr_nLayers=2) or >=5cm (SiWr_nLayers=1) -->
     <constant name="SiWrD_zmax"         value="3000.0*mm"/> <!-- Can be freely changed, as long as SiWrD_zmax-SiWrD_zmin is kept constant or is increased -->
-    <constant name="SiWrB_pitch_z0"     value="1.000*mm"/>  <!-- The pitches can be freely changed and can be different for the two layers. These pitches here are just an assumption, impact on physics needs to be studied in detail! -->
+    <constant name="SiWrB_pitch_z0"     value="0.050*mm"/>  <!-- The pitches can be freely changed and can be different for the two layers. These pitches here are just an assumption, impact on physics needs to be studied in detail! Currently assuming 50x50 um2 pixels, AC-LGADs or MAPS -->
     <constant name="SiWrB_pitch_z1"     value="0.050*mm"/>
     <constant name="SiWrB_pitch_phi0"   value="0.050*mm"/>
-    <constant name="SiWrB_pitch_phi1"   value="1.000*mm"/>
-    <constant name="SiWrD_pitch_r0"     value="1.000*mm"/>
+    <constant name="SiWrB_pitch_phi1"   value="0.050*mm"/>
+    <constant name="SiWrD_pitch_r0"     value="0.050*mm"/>
     <constant name="SiWrD_pitch_r1"     value="0.050*mm"/>
     <constant name="SiWrD_pitch_phi0"   value="0.050*mm"/>
-    <constant name="SiWrD_pitch_phi1"   value="1.000*mm"/>
+    <constant name="SiWrD_pitch_phi1"   value="0.050*mm"/>
 
     <!-- LAr ECAL Calo Barrel -->
     <constant name="BarECal_id" value="DetID_ECAL_Barrel"/>
@@ -246,8 +256,8 @@
   </limits>
   <regions>
     <region name="BeampipeRegion"/>
-    <region name="VTXBRegion"/>
-    <region name="VTXDRegion"/>
+    <region name="VertexBarrelRegion"/>
+    <region name="VertexEndcapRegion"/>
     <region name="SiWrBRegion"/>
     <region name="SiWrDRegion"/>
   </regions>

FCCee/ALLEGRO/compact/README.md

@@ -20,6 +20,7 @@ ALLEGRO_o1_v03:
 - For the muon tagger, switched from eta-phi to theta-phi segmentation. Outer R set to 5m as in initial conceptual design (to be replaced in the future by more realistic detector).
 - February 2026: The vertex detector and silicon wrapper are now taken from IDEA_o1_v04.
 - August 2026: The HCal segmentation logic was updated to guarantee at the same time more flexibility for v04 and the same functionality as before in v03. No impact on the actual resulting segmentation here.
+- August 2026: ALLEGRO no longer has the same vertex detector parameters as IDEA. Pixel pitch is changed to 20x20 µm2 everywhere. For the silicon wrapper, conversely to IDEA, only one layer is used. The pitch is changed to 50x50 µm2. The inner vertex detector can be changed to use the ultra-light or FCC-SEED inner vertex instead by modifying FCCee/IDEA/compact/IDEA_o1_v04/VertexComplete_o1_v04.xml accordingly.
 
 ALLEGRO_o1_v04
 - Update on the HCal geometry, to fix some minor positioning bugs and make the detector structure more realistic. All other subdetectors are currently taken from ALLEGRO_o1_v03.
@@ -31,3 +32,4 @@ ALLEGRO_o2_v01:
 - This version of ALLEGRO allows for direct comparison between the drift chamber and the straw tracker, as compared to o1_v03 the only changes are (i) the swap of drift chamber and straw and (ii) elongating the tracking volume, including the silicon wrapper.
 - The elongated wrapper is +660mm longer in both the positive and negative z directions with a 60mm buffer between the ends of the straw and the silicon wrapper endcap, to be filled later with straw RO/HV and support.
 - February 2026: The vertex detector and silicon wrapper are now taken from IDEA_o1_v04.
+- August 2026: ALLEGRO no longer has the same vertex detector parameters as IDEA. Pixel pitch is changed to 20x20 µm2 everywhere. For the silicon wrapper, conversely to IDEA, only one layer is used. The pitch is changed to 50x50 µm2. The inner vertex detector can be changed to use the ultra-light or FCC-SEED inner vertex instead by modifying FCCee/IDEA/compact/IDEA_o1_v04/VertexComplete_o1_v04.xml accordingly.

FCCee/CLD/compact/CLD_o2_v09/BeamInstrumentation_o3_v02_fitShield.xml

@@ -0,0 +1,26 @@
+<lccdd>
+
+    <detectors>
+        <comment>Beampipe Instrumentation</comment>
+
+        <detector name="CompSol" type="DD4hep_Mask_o1_v01" insideTrackingVolume="true" vis="CompSolVis">
+            <parameter crossingangle="CrossingAngle" />
+            <envelope vis="CoilVis">
+                <shape type="Assembly"/>
+            </envelope>
+            <section type="Center"               start="CompSol_min_z"    end="QD0_min_z" rMin1="103*mm"  rMin2="180*mm"  rMax1="123*mm" rMax2="200*mm"    material="SolenoidMixture"  name="CompSol" />
+        </detector>
+
+        <detector name="ScreenSol" type="DD4hep_Mask_o1_v01" insideTrackingVolume="true" vis="ScreenSolVis">
+            <parameter crossingangle="CrossingAngle" />
+            <envelope vis="CoilVis">
+                <shape type="Assembly"/>
+            </envelope>
+
+           <section type="Center"  start="QD0_min_z" end="QD0_min_z+5*cm" rMin1="SeparatedBeamPipe_rmax+1*mm+5*cm" rMin2="SeparatedBeamPipe_rmax+1*mm+5*cm" rMax1="200*mm" rMax2="200*mm" material="SolenoidMixture"  name="CompSol" />
+
+            <section type="Center"    start="QD0_min_z+5*cm"    end="QD0_max_z" rMin1="180*mm"  rMin2="180*mm"  rMax1="200*mm" rMax2="200*mm"    material="SolenoidMixture"  name="CompSol" />
+        </detector>
+
+    </detectors>
+</lccdd>