Setting Z positions of the tracking chamber to values given in Alain TOURNAIRE note...

[u/mrichter/AliRoot.git] / MUON / AliMUONConstants.cxx

diff --git a/MUON/AliMUONConstants.cxx b/MUON/AliMUONConstants.cxx
index 03b1eae7d783176767f41cb718126f6ce505ac03..f6da848e1688c835ff0120d0740a6dedb8b07a9f 100644 (file)
--- a/MUON/AliMUONConstants.cxx
+++ b/MUON/AliMUONConstants.cxx
@@ -13,37 +13,63 @@
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
 
-/*
-$Log$
-Revision 1.3  2000/10/02 16:58:29  egangler
-Cleaning of the code :
--> coding conventions
--> void Streamers
--> some useless includes removed or replaced by "class" statement
-
-Revision 1.2  2000/06/27 09:46:57  morsch
-kMAXZOOM global constant now in AliMUONConstants
-
-Revision 1.1  2000/06/26 14:02:38  morsch
-Add class AliMUONConstants with MUON specific constants using static memeber data and access methods.
-
-*/
+/* $Id$ */
 
+#include <TMath.h>
 #include "AliMUONConstants.h"
 
-
 ClassImp(AliMUONConstants)
 
 Int_t   AliMUONConstants::fgNCh = 14;
 Int_t   AliMUONConstants::fgNTrackingCh = 10;
 Int_t   AliMUONConstants::fgNTriggerCh = 4;
 Int_t   AliMUONConstants::fgNTriggerCircuit = 234;
-Float_t AliMUONConstants::fgDefaultChamberZ[14] =
-{518., 538., 680., 700., 965., 985., 1239., 1259., 1439., 1459.,
-                  1610, 1625., 1710., 1725.}; 
+Int_t   AliMUONConstants::fgNDetElem = 228;
+
+
+
+Float_t AliMUONConstants::fgDefaultChamberZ[14] = 
+  {-526.16, -545.24, -676.4, -695.4, // St12
+   -967.5, -998.5, -1276.5, -1307.5, -1406.6, -1437.6,// updated 08/05, EDMS id 335328 (A. Tournaire)
+   -1603.5, -1620.5, -1703.5, -1720.5}; // M1 & M2
+
+Float_t  AliMUONConstants::fgDzCh   = 15.5/2.;
+Float_t  AliMUONConstants::fgDzSlat = 8.5/2.;
+
+Float_t  AliMUONConstants::fgSqrtKx3 = 0.7131;
+Float_t  AliMUONConstants::fgSqrtKy3 = 0.7642;
+
+Float_t  AliMUONConstants::fgSqrtKx3St1 = 0.7000;
+Float_t  AliMUONConstants::fgSqrtKy3St1 = 0.7550;
+
+Float_t  AliMUONConstants::fgChargeCorrel    = 0.11;
+Float_t  AliMUONConstants::fgChargeCorrelSt1 = 1.0; //??? 
+Float_t  AliMUONConstants::fgPitch     = 0.25;
+Float_t  AliMUONConstants::fgPitchSt1  = 0.21; 
 
-Float_t  AliMUONConstants::fgDmin[7] = {  35.,  47.,  66.0,   80.,   80., 100., 100.};    
-Float_t  AliMUONConstants::fgDmax[7]  = {183., 245., 316.6,  560.,  560., 830., 880.};  
+// From Alain TOURNAIRE    
+// ALICE / ALICE Engineering baseline / Dimuonspectrometer (DIS) v7-1
+// EDMS Id 335328 for "search in EDMS 
+// These are the diameter (innner and ounner) values of the active surface
+Float_t  AliMUONConstants::fgDmin[7]  = {   36.4,  46.2,  63.0,   79.0,   79.0,  99.0,  100.0};  
+Float_t  AliMUONConstants::fgDmax[7]  = {  176.6, 229.0, 308.84, 418.2,  522.0, 1224.0, 1300.0}; 
+ 
+Int_t    AliMUONConstants::fgMaxZoom = 20;
 
-Int_t   AliMUONConstants::fgMaxZoom = 20;
+//______________________________________________________________________________
+Int_t AliMUONConstants::ChamberNumber(Float_t z) 
+{
+  // return chamber number according z position of hit. Should be taken from geometry ?
+ 
+  Float_t dMaxChamber = DzSlat() + DzCh() + 0.25; // cm st 3 &4 & 5
+  if ( z >  (DefaultChamberZ(4)+50.)) dMaxChamber = 7.; // cm stations 1 & 2
+  Int_t iChamber;
 
+  for (iChamber = 0; iChamber < 10; iChamber++) {
+    
+    if (TMath::Abs(z-DefaultChamberZ(iChamber)) < dMaxChamber) {
+      return iChamber;
+    }
+  }
+  return -1;
+}