[WIP] implement EM Calorimeter for SoLID

WIP

src/ConceptDetectors/SoLID/compact/solid_components/materials.xml

@@ -18,9 +18,9 @@
     <fraction n="0.234" ref="O"/>
     <fraction n="0.012" ref="Ar"/>
   </material>
-  
+
   <!-- We model vakuum just as very thin air -->
-  <material name="Vacuum">  
+  <material name="Vacuum">
     <D type="density" unit="g/cm3" value="0.0000000001" />
     <fraction n="0.754" ref="N"/>
     <fraction n="0.234" ref="O"/>
@@ -96,12 +96,12 @@
     <fraction n="0.65" ref="C"/>
     <fraction n="0.35" ref="Epoxy"/>
   </material>
-  
+
   <material name="CarbonFiber_50D">
     <D type="density" value="0.75" unit="g/cm3"/>
     <fraction n="0.65" ref="C"/>
     <fraction n="0.35" ref="Epoxy"/>
-  </material>  
+  </material>
 
   <material name="Rohacell31">
     <D type="density" value="0.032" unit="g/cm3"/>
@@ -110,14 +110,14 @@
     <composite n="2" ref="O"/>
     <composite n="1" ref="N"/>
   </material>
-  
+
   <material name="Rohacell31_50D">
     <D type="density" value="0.016" unit="g/cm3"/>
     <composite n="9" ref="C"/>
     <composite n="13" ref="H"/>
     <composite n="2" ref="O"/>
     <composite n="1" ref="N"/>
-  </material>  
+  </material>
 
   <material name="RPCGasDefault" state="gas">
     <D type="density" value="0.0037" unit="g/cm3"/>
@@ -146,4 +146,10 @@
     <composite n="3" ref="O" />
   </material>
 
+  <material name="EJ204">
+    <D value="1.032" unit="g/cm3" />
+    <composite n="521" ref="H" />
+    <composite n="474" ref="C" />
+  </material>
+
 </materials>