+#ifndef ALITRDCONST_H
+#define ALITRDCONST_H
+/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * See cxx source for full Copyright notice */
+
+/* $Id$ */
+
//
-// Parameter for the TRD
+// Geometry parameter for the TRD
//
-//_____________________________________________________________________________
-// Geometry parameter
-
const Int_t kNsect = 18; // Number of sectors in the full detector
const Int_t kNplan = 6; // Number of planes of the TRD
+const Int_t kNcham = 5; // Number of chambers in z-direction
+const Int_t kNdet = kNsect * kNplan * kNcham;
const Float_t kRmin = 294.0; // r-dimensions of the TRD
const Float_t kRmax = 368.0;
const Float_t kZmax1 = 378.35; // z-dimensions of the TRD
const Float_t kZmax2 = 302.0;
-const Float_t kSheight = 74.0; // Height of the TRD-volume in spaceframe
-const Float_t kSwidth1 = 103.674; // Lower width of the TRD-volume in spaceframe
-const Float_t kSwidth2 = 129.768; // Upper width of the TRD-volume in spaceframe
-const Float_t kSlength = 751.0; // Length of the TRD-volume in spaceframe
+const Float_t kSheight = 74.0; // Height of the TRD-volume in spaceframe (BTR1-3)
+const Float_t kSwidth1 = 99.613; // Lower width of the TRD-volume in spaceframe (BTR1-3)
+const Float_t kSwidth2 = 125.707; // Upper width of the TRD-volume in spaceframe (BTR1-3)
+const Float_t kSlenTR1 = 751.0; // Length of the TRD-volume in spaceframe (BTR1)
+const Float_t kSlenTR2 = 313.5; // Length of the TRD-volume in spaceframe (BTR2)
+const Float_t kSlenTR3 = 159.5; // Length of the TRD-volume in spaceframe (BTR3)
const Float_t kCheight = 11.0; // Height of the chambers
const Float_t kCspace = 1.6; // Vertical spacing of the chambers
const Float_t kWaZpos = 1.3325; // Cooling Water
//_____________________________________________________________________________
+#endif
+