updated for changes in Config.C

[u/mrichter/AliRoot.git] / AliGeant4 / macro / ITS / Config.C

diff --git a/AliGeant4/macro/ITS/Config.C b/AliGeant4/macro/ITS/Config.C
index 7cc7329b9eeeb6ea267b8d479bca2033ea7eef99..3f5e344cf351fdd308867fb751b4b62562c4ec52 100644 (file)
--- a/AliGeant4/macro/ITS/Config.C
+++ b/AliGeant4/macro/ITS/Config.C
@@ -4,17 +4,49 @@ void Config(Int_t version)
 
   AliITS* ITS = 0;
   switch (version) {
-    case 1: ITS  = new AliITSv1("ITS","ITSv1 detector"); break;
-    case 3: ITS  = new AliITSv3("ITS","ITSv3 detector"); break; 
-    case 5: ITS  = new AliITSv5("ITS","normal ITS");       break;
+    case 1: ITS  = new AliITSv1("ITS","Old ITS coarse version as of the ALICE TP"); break;
+    case 3: ITS  = new AliITSv3("ITS","Old ITS detailed version as of the ALICE TP"); break; 
+    case 5: ITS  = new AliITSv5("ITS","Current ITS detailed version used for the ITS TDR"); break;
+    case 6: ITS  = new AliITSv5symm( "ITS","Updated ITS TDR detailed version with symmetric services");break;
+    case 7: ITS  = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");break;
+    case 8: ITS  = new AliITSvPPRcoarseasymm("ITS","New ITS coarse version with asymmetric services"); break;
+    case 9: ITS  = new AliITSvPPRcoarsesymm( "ITS","New ITS coarse version with symmetric services"); break;
+    // 
   }  
 
-//=================== ITS parameters ============================
-//
-// EUCLID is a flag to output (=1) both geometry and media to two ASCII files 
-// (called by default ITSgeometry.euc and ITSgeometry.tme) in a format
-// understandable to the CAD system EUCLID. The default (=0) means that you 
-// dont want to use this facility.
-//
-ITS->SetEUCLID(0);
+    //=================== ITS parameters ============================
+    //
+    // As the innermost detector in ALICE, the Inner Tracking System "impacts" on
+    // almost all other detectors. This involves the fact that the ITS geometry 
+    // still has several options to be followed in parallel in order to determine 
+    // the best set-up which minimizes the induced background. All the geometries
+    // available to date are described in the following. Read carefully the comments 
+    // and use the default version (the only one uncommented) unless you are making
+    // comparisons and you know what you are doing. In this case just uncomment the
+    // ITS geometry you want to use and run Aliroot. 
+    //
+    // Detailed geometries:
+    // ====================
+    //AliITS *ITS  = new AliITSv3("ITS","Old ITS detailed version as of the ALICE TP");
+    //AliITS *ITS  = new AliITSv5("ITS","Current ITS detailed version used for the ITS TDR");
+    //AliITS *ITS  = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services");
+    //AliITS *ITS  = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services");
+    //
+    //
+    // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful for reconstruction !):
+    // ======================================================================================================================
+    //AliITS *ITS  = new AliITSv1("ITS","Old ITS coarse version as of the ALICE TP");
+    //AliITS *ITS  = new AliITSvPPRcoarseasymm("ITS","New ITS coarse version with asymmetric services");
+    //AliITS *ITS  = new AliITSvPPRcoarsesymm("ITS","New ITS coarse version with symmetric services");
+    //
+    //
+    // Geant3 <-> EUCLID conversion
+    // ============================
+    //
+    // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and 
+    // media to two ASCII files (called by default ITSgeometry.euc and 
+    // ITSgeometry.tme) in a format understandable to the CAD system EUCLID. 
+    // The default (=0) means that you dont want to use this facility.
+    //
+    ITS->SetEUCLID(0);
 }