Resolve "Implement ci_GEM"

Closes #20 (closed)

compact/definitions.xml

@@ -164,13 +164,13 @@
       EndcapP  subassembly ID: 112
       EndcapN  subassembly ID: 113
 
-      Unused IDs: 114-119
+      Unused IDs: 115-119
     </comment>
     <constant name="HCalSubAssembly_ID" value="110"/>
     <constant name="HCalBarrel_ID"      value="111"/>
     <constant name="HCalEndcapP_ID"     value="112"/>
     <constant name="HCalEndcapN_ID"     value="113"/>
-
+    <constant name="ci_HCAL_id"         value="200"/>
     <comment> 
       =====================================
       (120-129) (near) Forward reserved
@@ -183,6 +183,7 @@
     </comment>
     <constant name="ForwardTracking_ID" value="120"/>
     <constant name="ForwardRICH_ID"     value="121"/>
+    <constant name="ci_GEM_id"          value="122"/>
 
     <comment> 
       =====================================
@@ -596,9 +597,7 @@
       --------------------------
       Central Ion HCal Parameters
       --------------------------
-
     </comment>
-    <constant name="ci_HCAL_id"      value="200"/>
     <constant name="ci_HCAL_rin"     value="90 * cm"/><comment> Orginally 0, changed to not overlap solenoid </comment>
     <constant name="ci_HCAL_rout"    value="300 * cm"/>
     <constant name="ci_HCAL_sizez"   value="160 * cm"/>