[IDEA] Add endplate absorber

key4hep · Mar 1, 2024 · e07ce12 · e07ce12
1 parent 3a3641c
commit e07ce12
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Showing 4 changed files with 31 additions and 1 deletion.
diff --git a/FCCee/IDEA/compact/IDEA_o1_v02/DectDimensions_IDEA_o1_v01.xml b/FCCee/IDEA/compact/IDEA_o1_v02/DectDimensions_IDEA_o1_v01.xml
@@ -98,6 +98,12 @@
     <constant name="Solenoid_Coil_half_length" value="Solenoid_half_length-200*mm"/>
     <constant name="Solenoid_Coil_radius" value="Solenoid_inner_radius+200*mm"/>
 
+    <!-- These are lead plates that we put in the endcap to have the same material budget (from solenoid) as in the barrel-->
+    <constant name="EndPlateAbsorber_inner_radius" value="380*mm"/>
+    <constant name="EndPlateAbsorber_outer_radius" value="2090*mm"/>
+    <constant name="EndPlateAbsorber_z_min" value="2490*mm"/>
+    <constant name="EndPlateAbsorber_z_half_length" value="4.209/2.0*mm"/>
+
     <constant name="ECalBarrel_inner_radius" value="2150*mm"/>
     <constant name="ECalBarrel_outer_radius" value="2352*mm"/>
     <constant name="ECalBarrel_half_length" value="2210*mm"/>

diff --git a/FCCee/IDEA/compact/IDEA_o1_v02/EndPlateAbsorber_o1_v01.xml b/FCCee/IDEA/compact/IDEA_o1_v02/EndPlateAbsorber_o1_v01.xml
@@ -0,0 +1,21 @@
+<lccdd>
+
+  <info name="EndPlateAbsorber" title="EndPlateAbsorber" status="development" version="$Id: $">
+    <comment>
+      Endcap plate absorber to mimic the material budget from the solenoid (0.75 X0) present only in the barrel and start the showers.
+    </comment>
+  </info>
+
+  <detectors>
+
+    <detector name="EndPlateAbsorber_positive" type="SimpleCylinder_o1_v01" vis="muon_vis">
+      <dimensions rmin="EndPlateAbsorber_inner_radius" rmax="EndPlateAbsorber_outer_radius" dz="EndPlateAbsorber_z_half_length" z_offset = "EndPlateAbsorber_z_min + EndPlateAbsorber_z_half_length" material="Lead" phi0="0" deltaphi="360*deg" vis="muon_vis"/>
+    </detector>
+
+    <detector name="EndPlateAbsorber_negative" type="SimpleCylinder_o1_v01" vis="muon_vis">
+      <dimensions rmin="EndPlateAbsorber_inner_radius" rmax="EndPlateAbsorber_outer_radius" dz="EndPlateAbsorber_z_half_length" z_offset = "-1*(EndPlateAbsorber_z_min + EndPlateAbsorber_z_half_length)" material="Lead" phi0="0" deltaphi="360*deg" vis="muon_vis"/>
+    </detector>
+
+  </detectors>
+
+</lccdd>
diff --git a/FCCee/IDEA/compact/IDEA_o1_v02/IDEA_o1_v02.xml b/FCCee/IDEA/compact/IDEA_o1_v02/IDEA_o1_v02.xml
@@ -50,6 +50,9 @@
   <!-- Import solenoid -->
   <include ref="Solenoid_o1_v01.xml"/>
 
+  <!-- Import Endcap plate absorber -->
+  <include ref="EndPlateAbsorber_o1_v01.xml"/>
+
   <plugins>
     <plugin name="DD4hepVolumeManager"/>
     <plugin name="InstallSurfaceManager"/>

diff --git a/FCCee/IDEA/compact/README.md b/FCCee/IDEA/compact/README.md
@@ -1,4 +1,4 @@
 IDEA
 ====
 IDEA_o1_v01: IDEA version picked from the latest version in FCCDetectors repo
-IDEA_o1_v02: Based on o1_v01 but with a detailed description of the vertex detector and the drift chamber
+IDEA_o1_v02: Based on o1_v01 but with a detailed description of the vertex detector and the drift chamber, a place holder solenoid and the endplate absorber. Missing: SiWrapper, calorimeter, detailed muons system (coming soon).