diff -u -r1.1 -r1.2
--- CellReadout2D.lcdd	6 Sep 2013 02:26:58 -0000	1.1
+++ CellReadout2D.lcdd	14 Sep 2013 01:38:24 -0000	1.2
@@ -8,14 +8,15 @@

   </header>
   <iddict>
     <idspec name="CalHits" length="64">

-      <idfield signed="false" label="layer" length="7" start="0" />
-      <idfield signed="false" label="system" length="3" start="7" />
-      <idfield signed="true" label="ix" length="16" start="32" />
-      <idfield signed="true" label="iy" length="16" start="48" />

+      <idfield signed="false" label="system" length="3" start="0" />
+      <idfield signed="false" label="layer" length="7" start="3" />
+      <idfield signed="false" label="slice" length="2" start="5" />
+      <idfield signed="false" label="ix" length="16" start="32" />
+      <idfield signed="false" label="iy" length="16" start="48" />

     </idspec>
   </iddict>
   <sensitive_detectors>

-    <calorimeter name="CellReadout2DTest" ecut="0.0" eunit="MeV" verbose="0" hits_collection="CalHits">

+    <calorimeter name="CellReadout2DTest" ecut="0.0" eunit="MeV" verbose="2" hits_collection="CalHits">

       <idspecref ref="CalHits" />
       <cell_readout_2d cell_size_x="1.0" cell_size_y="1.0" lunit="cm" />
     </calorimeter>

@@ -89,7 +90,7 @@

           <volumeref ref="TestBeamCalorimeterTest_layerType0_slice0" />
           <positionref ref="TestBeamCalorimeterTest_layerType0_slice0_position" />
           <rotationref ref="identity_rot" />

-          <physvolid field_name="slice" value="0" />

+          <physvolid field_name="slice" value="1" />

         </physvol>
       </volume>
       <volume name="TestBeamCalorimeterTest_envelope">

@@ -99,7 +100,7 @@

           <volumeref ref="TestBeamCalorimeterTest_layerType0" />
           <positionref ref="TestBeamCalorimeterTest_layer0_position" />
           <rotationref ref="identity_rot" />

-          <physvolid field_name="layer" value="0" />

+          <physvolid field_name="layer" value="2" />

         </physvol>
       </volume>
       <volume name="tracking_volume">

@@ -109,7 +110,7 @@

           <volumeref ref="TestBeamCalorimeterTest_envelope" />
           <positionref ref="TestBeamCalorimeterTest_position" />
           <rotationref ref="identity_rot" />

-          <physvolid field_name="system" value="0" />

+          <physvolid field_name="system" value="3" />

         </physvol>
         <regionref ref="TrackingRegion" />
       </volume>