Add mTOF geometries v20a and v20b, refs #1720 and #1721

setup/setup_mcbm_beam_2020_03.C

@@ -6,6 +6,7 @@
  **
  **/
 
+// 2020-05-13 - DE - make mTOF v20a the new default
 // 2020-05-12 - DE - make mRICH v20b (without window) the new default
 // 2020-03-11 - DE - prepare setup for mCBM March 2020 beamtime
 //
@@ -57,7 +58,7 @@ void setup_mcbm_beam_2020_03()
   TString muchGeoTag      = "v19a_mcbm";    // 2 layers
 //  TString trdGeoTag       = "v18n_mcbm";    // 2018 // 4 TRD modules 
   TString trdGeoTag       = "v18q_mcbm";    // 2018 // 2 TRD modules 
-  TString tofGeoTag       = "v19b_mcbm";    // 
+  TString tofGeoTag       = "v20a_mcbm";    // 
   TString richGeoTag      = "v20b_mcbm";    // geometry provided by RICH group
   TString psdGeoTag       = "v18d_mcbm";    // at 25 degree, below the beampipe
   // ------------------------------------------------------------------------

tof/tof_v20a_mcbm.geo.info

@@ -2,7 +2,7 @@
 ##   tof_v20a_mcbm information file
 #
 
-# created 20200402
+# created 20200513
 
 # TOF setup
 

tof/tof_v20b_mcbm.geo.info

+#
+##   tof_v20b_mcbm information file
+#
+
+# created 20200513
+
+# TOF setup
+
+# envelope
+   0.00 cm   start of TOF (z)
+ 416.50 cm   end   of TOF (z)
+
+# central tower position
+ 400.00 cm   center of staggered, front RPC cell at x=0
+