update README.md for fresh ubuntu install

.gitignore

@@ -0,0 +1 @@
+.vscode

CloverAnalysis.hh

@@ -1,12 +0,0 @@
-
-#ifndef CloverAnalysis_h
-#define CloverAnalysis_h 1
-
-#include "g4root.hh"
-//#include "g4csv.hh"
-//#include "g4xml.hh"
-
-//#include "G4GenericAnalysisManager.hh"
-//using G4AnalysisManager = G4GenericAnalysisManager;
-
-#endif

CloverEventAction.cc

@@ -2,7 +2,7 @@
 #include "CloverEventAction.hh"
 #include "CloverCrystalSD.hh"
 #include "CloverCrystalHit.hh"
-#include "CloverAnalysis.hh"
+// #include "CloverAnalysis.hh"
 #include "Detector_Parameters.hh"
 
 

CloverEventAction.hh

@@ -3,11 +3,11 @@
 #define CloverEventAction_h 1
 
 #include "G4UserEventAction.hh"
+#include "G4AnalysisManager.hh"
+#include "globals.hh"
 
 #include "CloverCrystalHit.hh"
 
-#include "globals.hh"
-
 #include <vector>
 
 /// Event action class

CloverRunAction.cc

@@ -1,6 +1,5 @@
 
 #include "CloverRunAction.hh"
-#include "CloverAnalysis.hh"
 #include "CloverEventAction.hh"
 
 #include "G4Run.hh"

README.md

@@ -0,0 +1,60 @@
+# About
+
+This is a geant4 simulation for the Clarion2 gamma-detector array. It based on https://github.com/goluckyryan/HPGeClover.
+
+![Clarion 2 Drawing](https://fsunuc.physics.fsu.edu/git/pderosa888/CLARION2_GEANT4/raw/branch/master/Clarion2.png)
+
+# Build the code
+
+Once downloaded the code, create a new folder for the build. 
+
+```sh
+>mkdir Clarion2_build
+>cd Clarion2_build
+>cmake <path/to/CLARION2_GEANT4
+>make 
+```
+you should have the '''clover''' created.
+
+## to run in interactive mode
+
+```sh
+>./clover
+```
+
+## to run in bash mode
+```sh
+>./clover <in_file>
+```
+
+# KNOWN BUGS
+
+* Segfault at exit program
+* Some of the Clovers seems to be not at the right orientation, especially at the upstream.
+
+# To build GEANT4 11.2.0 in Ubuntu 22.04
+
+## Visuailization
+
+I pick the Qt + openGL as the visualiization, for that we need
+
+```sh
+>sudo apt install qt6-base-dev libqt6charts6-dev qt6-3d-dev
+```
+
+the openGL should come with Ubuntu 22.04
+
+## Steps
+
+```sh
+>sudo apt install libexpat1-dev libxmu-dev linxkbcommon-dev
+>cd Downloads
+>wget https://gitlab.cern.ch/geant4/geant4/-/archive/v11.2.0/geant4-v11.2.0.tar.gz
+>tar xzf geant4-v11.2.0.tar.gz
+>mkdir geant4-v11.2.0_build
+>cd geant4-v11.2.0_build
+>cmake -DGEANT4_INSTALL_DATA=On -DCMAKE_INSTALL_PREFIX=/opt/geant4-v11.2.0 -DGEANT4_USE_OPENGL_X11=ON -DGEANT4_USE_QT=ON -DGEANT4_USE_QT_QT6=ON ../geant4-v11.2.0
+>make -j10
+>sudo make install
+>echo 'source /opt/geant4-v11.2.0/bin/geant4.sh' >> ~/.bashrc
+```

my.in

@@ -30,7 +30,7 @@
 #/gun/energy 6.13 MeV
 
 #-------Override Opening angle
-/Clover/generator/OpeningAngle  10 deg
+/Clover/generator/OpeningAngle  180 deg
 
 #-------Override output root file
 /analysis/setFileName 000SingleCrystal.root