diff --git a/compact/materials.xml b/compact/materials.xml
index 5ad6383c14f1787dbe073ccb2c6eb1370f11bbbc..6de9ac5ef7d12506389ecee65f88434bf7069cfd 100644
--- a/compact/materials.xml
+++ b/compact/materials.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <materials>
-
   <!--
        Air by weight from
 
@@ -12,77 +11,65 @@
     <fraction n="0.234" ref="O"/>
     <fraction n="0.012" ref="Ar"/>
   </material>
-  <material name="air">
-    <D type="density" unit="g/cm3" value="0.0012"/>
-    <fraction n="0.754" ref="N"/>
-    <fraction n="0.234" ref="O"/>
-    <fraction n="0.012" ref="Ar"/>
-  </material>
-  
-  <!-- We model vakuum just as very thin air -->
-  <material name="Vacuum">  
-    <D type="density" unit="g/cm3" value="0.0000000001" />
+  <!-- We model vacuum just as very thin air -->
+  <material name="Vacuum">
+    <D type="density" unit="g/cm3" value="0.0000000001"/>
     <fraction n="0.754" ref="N"/>
     <fraction n="0.234" ref="O"/>
     <fraction n="0.012" ref="Ar"/>
   </material>
-
   <material name="Epoxy">
     <D type="density" value="1.3" unit="g/cm3"/>
     <composite n="44" ref="H"/>
     <composite n="15" ref="C"/>
     <composite n="7" ref="O"/>
   </material>
-
   <material name="Quartz">
     <D type="density" value="2.2" unit="g/cm3"/>
     <composite n="1" ref="Si"/>
     <composite n="2" ref="O"/>
   </material>
-
   <material name="G10">
     <D type="density" value="1.7" unit="g/cm3"/>
     <fraction n="0.08" ref="Cl"/>
     <fraction n="0.773" ref="Quartz"/>
     <fraction n="0.147" ref="Epoxy"/>
   </material>
-
   <material name="Polystyrene">
     <D value="1.032" unit="g/cm3"/>
     <composite n="19" ref="C"/>
     <composite n="21" ref="H"/>
   </material>
-
   <material name="Steel235">
     <D value="7.85" unit="g/cm3"/>
     <fraction n="0.998" ref="Fe"/>
     <fraction n=".002" ref="C"/>
   </material>
-
   <material name="SiliconOxide">
     <D type="density" value="2.65" unit="g/cm3"/>
     <composite n="1" ref="Si"/>
     <composite n="2" ref="O"/>
   </material>
-
   <material name="BoronOxide">
     <D type="density" value="2.46" unit="g/cm3"/>
     <composite n="2" ref="B"/>
     <composite n="3" ref="O"/>
   </material>
-
   <material name="SodiumOxide">
     <D type="density" value="2.65" unit="g/cm3"/>
     <composite n="2" ref="Na"/>
     <composite n="1" ref="O"/>
   </material>
-
   <material name="AluminumOxide">
     <D type="density" value="3.89" unit="g/cm3"/>
     <composite n="2" ref="Al"/>
     <composite n="3" ref="O"/>
   </material>
-
+  <material name="SiliconNitride">
+    <D type="density" value="3.17" unit="g/cm3"/>
+    <composite n="3" ref="Si"/>
+    <composite n="4" ref="N"/>
+  </material>
   <material name="PyrexGlass">
     <D type="density" value="2.23" unit="g/cm3"/>
     <fraction n="0.806" ref="SiliconOxide"/>
@@ -90,19 +77,16 @@
     <fraction n="0.040" ref="SodiumOxide"/>
     <fraction n="0.023" ref="AluminumOxide"/>
   </material>
-
   <material name="CarbonFiber">
     <D type="density" value="1.5" unit="g/cm3"/>
     <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"/>
     <composite n="9" ref="C"/>
@@ -110,40 +94,136 @@
     <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"/>
     <composite n="209" ref="C"/>
     <composite n="239" ref="H"/>
     <composite n="381" ref="F"/>
   </material>
-
   <material name="PolystyreneFoam">
     <D type="density" value="0.0056" unit="g/cm3"/>
     <fraction n="1.0" ref="Polystyrene"/>
   </material>
-
   <material name="Kapton">
-    <D value="1.43" unit="g/cm3" />
+    <D value="1.43" unit="g/cm3"/>
     <composite n="22" ref="C"/>
-    <composite n="10" ref="H" />
-    <composite n="2" ref="N" />
-    <composite n="5" ref="O" />
+    <composite n="10" ref="H"/>
+    <composite n="2" ref="N"/>
+    <composite n="5" ref="O"/>
   </material>
-
   <material name="PEEK">
-    <D value="1.37" unit="g/cm3" />
+    <D value="1.37" unit="g/cm3"/>
     <composite n="19" ref="C"/>
-    <composite n="12" ref="H" />
-    <composite n="3" ref="O" />
+    <composite n="12" ref="H"/>
+    <composite n="3" ref="O"/>
+  </material>
+  <material name="TungstenDens23">
+    <D value="17.7" unit="g / cm3"/>
+    <fraction n="0.925" ref="W"/>
+    <fraction n="0.066" ref="Ni"/>
+    <fraction n="0.009" ref="Fe"/>
+  </material>
+  <material name="TungstenDens24">
+    <D value="17.8" unit="g / cm3"/>
+    <fraction n="0.93" ref="W"/>
+    <fraction n="0.061" ref="Ni"/>
+    <fraction n="0.009" ref="Fe"/>
+  </material>
+  <material name="TungstenDens25">
+    <D value="18.2" unit="g / cm3"/>
+    <fraction n="0.950" ref="W"/>
+    <fraction n="0.044" ref="Ni"/>
+    <fraction n="0.006" ref="Fe"/>
+  </material>
+  <material name="CarbonFiber_25percent">
+    <D type="density" value="0.375" unit="g / cm3"/>
+    <fraction n="1.0" ref="CarbonFiber"/>
+  </material>
+  <material name="CarbonFiber_15percent">
+    <D type="density" value="0.225" unit="g / cm3"/>
+    <fraction n="1.0" ref="CarbonFiber"/>
+  </material>
+  <material name="Rohacell31_50percent">
+    <D type="density" value="0.016" unit="g / cm3"/>
+    <fraction n="1.0" ref="Rohacell31"/>
+  </material>
+  <material name="Rohacell31_15percent">
+    <D type="density" value="0.0048" unit="g / cm3"/>
+    <fraction n="1.0" ref="Rohacell31"/>
+  </material>
+  <material name="BoratedPolyethylene5">
+    <D value="0.93" unit="g / cm3"/>
+    <fraction n="0.612" ref="C"/>
+    <fraction n="0.222" ref="O"/>
+    <fraction n="0.116" ref="H"/>
+    <fraction n="0.050" ref="B"/>
+  </material>
+  <material name="SiliconCarbide">
+    <D value="3.1" unit="g / cm3"/>
+    <composite n="1" ref="Si"/>
+    <composite n="1" ref="C"/>
+  </material>
+  <material name="SiliconCarbide_6percent">
+    <D value="0.186" unit="g / cm3"/>
+    <fraction n="1.0" ref="SiliconCarbide"/>
+  </material>
+  <material name="PlasticScint">
+    <D type="density" unit="g/cm3" value="1.032"/>
+    <composite n="9" ref="C"/>
+    <composite n="10" ref="H"/>
+  </material>
+  <material name="PbWO4">
+    <D type="density" value="8.3" unit="g / cm3"/>
+    <composite n="1" ref="Pb"/>
+    <composite n="1" ref="W"/>
+    <composite n="4" ref="O"/>
+  </material>
+  <material name="Ar10CO2">
+    <D type="density" value="1.802" unit="mg / cm3"/>
+    <composite n="0.891" ref="Argon"/>
+    <!--<composite n="0.109" ref="CarbonDioxide"/>-->
+    <composite n="0.036" ref="C"/>	    
+    <composite n="0.073" ref="O"/>	    
+  </material>
+  <material name="Mylar">
+    <D type="density" value="1.39" unit="g/cm3" />
+    <fraction n="0.62502108" ref="C"/>
+    <fraction n="0.041960452" ref="H"/>
+    <fraction n="0.33301847" ref="O"/>
+  </material>
+  <material name="Nomex">
+    <D type="density" value="0.029" unit="g/cm3" />
+    <composite n="14" ref="C"/>
+    <composite n="10" ref="H"/>
+    <composite n="2" ref="N"/>
+    <composite n="2" ref="O"/>
+  </material>
+  <material name="Fr4_Epoxy">
+    <D type="density" value="1.2" unit="g/cm3"/>
+    <composite n="2" ref="H"/>
+    <composite n="2" ref="C"/>
+  </material>
+  <material name="Fr4">
+    <D type="density" value="1.86" unit="g/cm3"/>
+    <fraction n="0.528" ref="Quartz"/>
+    <fraction n="0.472" ref="Fr4_Epoxy"/>
+  </material>
+  <material name="Cfrp_intt">
+    <D type="density" value="1.69" unit="g/cm3"/>
+    <composite n="10" ref="C"/>
+    <composite n="6" ref="H"/>
+    <composite n="1" ref="O"/>
+  </material>
+  <material name="Graphite">
+    <D type="density" value="2.21" unit="g/cm3"/>
+    <composite n="1" ref="C"/>
   </material>
 
 </materials>