far end mirror has the old reflectivity now, not the one measured by …

…John
JeffersonLab · Feb 13, 2019 · 20302aa · 20302aa
1 parent 2a6ed61
commit 20302aa
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Showing 2 changed files with 32 additions and 6 deletions.
diff --git a/DIRC_HDDS.xml b/DIRC_HDDS.xml
@@ -226,7 +226,7 @@
 <trd name="OWDG" Xmp_Ymp_Z="2.7 7.89929 3.325 3.325 9.1"
     inclination="16.26065 0.0" material="fusedSilica" sensitive="true"/>
 <!-- far-end mirror -->
-<box name="FNMR" X_Y_Z="0.09 3.4493 1.9761" material="ThickCerenkovMirror"/>
+<box name="FNMR" X_Y_Z="0.09 3.4493 1.9761" material="FarEndCerenkovMirror"/>
 
 <composition name="DCBR00">
         <posXYZ volume="OWDG" X_Y_Z="494.57 0.087500 -0.977122" rot="0.0 90.0 0.0" />

diff --git a/Material_HDDS.xml b/Material_HDDS.xml
@@ -1126,6 +1126,32 @@
     </optical_properties>
   </composite>
 
+  <composite name="FarEndCerenkovMirror">
+	<addmaterial material="Hydrogen">
+		<natoms n="11"/>
+ 	</addmaterial>
+	<addmaterial material="Carbon">
+		<natoms n="8"/>
+ 	</addmaterial>
+	<addmaterial material="Nitrogen">
+		<natoms n="1"/>
+ 	</addmaterial>
+	<addmaterial material="Oxygen">
+		<natoms n="2"/>
+ 	</addmaterial>
+	<real name="density"	value="0.2"	unit="g/cm^3" />
+    <optical_properties>
+	  <specify E="1.50" reflect="0.98" smooth="1" effic="0.0" />
+	  <specify E="2.00" reflect="0.98" smooth="1" effic="0.0" />
+	  <specify E="2.50" reflect="0.98" smooth="1" effic="0.0" />
+	  <specify E="3.00" reflect="0.95" smooth="1" effic="0.0" />
+	  <specify E="3.50" reflect="0.93" smooth="1" effic="0.0" />
+	  <specify E="4.00" reflect="0.89" smooth="1" effic="0.0" />
+	  <specify E="4.50" reflect="0.80" smooth="1" effic="0.0" />
+	  <specify E="5.00" reflect="0.30" smooth="1" effic="0.0" />
+    </optical_properties>
+  </composite>
+
   <composite name="ThinCerenkovMirror">
 	<addmaterial material="Hydrogen">
 		<natoms n="11"/>
@@ -1143,12 +1169,12 @@
     <optical_properties>
 	  <specify E="1.50" reflect="0.98" smooth="1" effic="0.0" />
 	  <specify E="2.00" reflect="0.98" smooth="1" effic="0.0" />
-	  <specify E="2.50" reflect="1.00" smooth="1" effic="0.0" />
-	  <specify E="3.00" reflect="0.99" smooth="1" effic="0.0" />
+	  <specify E="2.50" reflect="0.98" smooth="1" effic="0.0" />
+	  <specify E="3.00" reflect="0.95" smooth="1" effic="0.0" />
 	  <specify E="3.50" reflect="0.93" smooth="1" effic="0.0" />
-	  <specify E="4.00" reflect="0.62" smooth="1" effic="0.0" />
-	  <specify E="4.50" reflect="0.31" smooth="1" effic="0.0" />
-	  <specify E="5.00" reflect="0.00" smooth="1" effic="0.0" />
+	  <specify E="4.00" reflect="0.89" smooth="1" effic="0.0" />
+	  <specify E="4.50" reflect="0.80" smooth="1" effic="0.0" />
+	  <specify E="5.00" reflect="0.30" smooth="1" effic="0.0" />
     </optical_properties>
   </composite>