Skip to content

Changes

Page history
Update Ubuntu Installation authored by Igor Semeniouk's avatar Igor Semeniouk
Hide whitespace changes
Inline Side-by-side
Linux-Installation/Ubuntu-Installation.md
View page @ cb2c7a7a
## Geant4 Installation on Ubuntu 24.04 LTS
[[_TOC_]]
In this tutorial we will use Geant4 version 11.3.2, compiled with the support of multithreading, GDML and Qt5 based Gui.
The repository scripts was updated for Geant4 version 11.3.2,
but if you have version 11.3.1 it will work also.
On Linux systems we use a compiled version of Geant4 and a binary distribution for ROOT installations.
Below we provide detailed instructions for the installation on Ubuntu 22.04.
The installation for other Debian and Ubuntu like Linux'es will be similar but the names of libraries can be slightly different. On Linux you can use GNU *c++*, *clang* or Intel *icc* compilers, we describe only the GNU *g++* installation.
The installation was tested Windows 11 WLS2 *Ubuntu* application and gcc 13.3.
## Ubuntu 24.04 Requirements
* Ubuntu 24.04 LTS Server or Desktop installation
* *build-essential*, *curl*, *g++*, *git* and *cmake* packages
* A Bourne-compatible shell for installation (e.g. *bash* or *zsh*)
* `sudo` for library installation and directory creation under `/usr/local`
## External Dependencies Installation
Generally we follow the installation rules for ROOT described here:
https://root.cern/install/dependencies/
Some dependencies like kerberos and mysql were dropped because we do not use these features in the tutorial.
The libraries which we need for Geant4 compilation need to be installed first. For this, the `ubuntu24_deps.sh` script is provided for the Ubuntu 24.04 machine.
This script must be executed only once.
See below the code snippet:
```
apt install -y qtbase5-dev qtbase5-dev-tools qt5-qmake
apt install -y qttools5-dev
apt install -y libxerces-c-dev
apt install -y gfortran
apt install -y python3-dev python3-numpy-dev
apt install -y libxpm-dev libxft-dev libxmu-dev
apt install -y libssl-dev
apt install -y qt3d5-dev qt3d5-dev-tools
apt-get install -y libpcre3-dev xlibmesa-glu-dev \
libglew1.5-dev libftgl-dev libfftw3-dev libcfitsio-dev \
graphviz-dev libxml2-dev libgsl0-dev
apt install -y libfreetype6-dev
```
**N.B. Upgrade you system before installation:**
```
sudo apt update
sudo apt upgrade
```
> On Ubuntu 20.04 all qt dependencies can be installed via qt-defaults package, > use the `ubuntu20_deps.sh` script to install dependencies.
## ROOT Installation
The ROOT installation is required for some exercises in this tutorial.
The tar files with precompiled ROOT binaries for Ubuntu-24.04 can be downloaded from
https://root.cern/download/:
`curl -SLO https://root.cern/download/root_v6.34.08.Linux-ubuntu24.04-x86_64-gcc13.3.tar.gz`
We will install both ROOT and Geant4 into /usr/local directory:
```
sudo tar zxf root_v6.34.08.Linux-ubuntu24.04-x86_64-gcc13.3.tar.gz -C /usr/local
sudo chown -R `id -un`:`id -gn` /usr/local/root
chmod +x /usr/local/root/bin/thisroot.*
```
All installation steps are summarized in the `install-root-ubuntu24.sh` script.
ROOT is installed in _relocatable_ mode.
To use ROOT, you must set its environment sourcing the *thisroot.sh* script from
the ROOT installation directory:
`source /usr/local/root/bin/thisroot.sh`
Visit http://root.cern.ch for more information about ROOT.
## Geant4 Installation
Install development tools and compilers packages _build-essential_, _cmake_:
```
sudo apt install -y build-essential
sudo install -y cmake
```
This is already done if you have used the _ubuntu20_deps.sh_ script to install dependencies.
Do not forget to install your favorite editor, e.g _Emacs_ :
`sudo apt install -y emacs`
<!--
You can install the precompiled version of Geant4 provided for this tutorial. You can download the tar file with precompiled Geant4 `geant4_v11.1.1.Linux-ubuntu20-x86_64-gcc9.4.tar.gz` from `llrnbox.in2p3.fr` server. The script `install-geant4-ubuntu.sh` can be used for downloading and installation of Geant4.
The link to tar.gz file with Geant4 11.3.2 binaries for Ubuntu 24.04
https://llrnbox.in2p3.fr/index.php/s/jNJcK7jHTmX3g97
The md5 sum file:
https://llrnbox.in2p3.fr/index.php/s/Y5yD3CZxYgGZxGA
N.B. You need to install Geant4 into `/usr/local/geant4/11.3.2`.
If you install the precompiled version you can skip **Build Geant4** section and go directly to **Environment**.
-->
## Build Geant4
You can download the Geant4 sources from https://geant4.web.cern.ch/support/download
or clone Geant4 repository. We use `git clone ...` in the instructions below.
In the Terminal window type the commands:
```
git clone https://gitlab.cern.ch/geant4/geant4.git
cd geant4/
git checkout v11.3.2
This will create a clone of the Geant4 11.3.2 release on your local disk.
The ROOT and Geant4 are installed with the current user as owner.
You need to create a target directory owned by my current user:
`sudo mkdir -p /usr/local/geant4/11.3.2`
`sudo chown -R `id -un`:`id -gn` /usr/local/geant4`
```
Make build configuration files with cmake:
```
mkdir geant4-build
cd geant4-build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/geant4/11.3.2 \
-DCMAKE_BUILD_TYPE=RelWithDebInfo [ -DGEANT4_BUILD_MULTITHREADED=ON ] \
-DGEANT4_INSTALL_DATA=ON -DGEANT4_USE_GDML=ON -DGEANT4_USE_QT=ON \
-DGEANT4_USE_OPENGL_X11=ON [-DGEANT4_USE_FREETYPE=ON] ../geant4
```
The multithreading enabled by default and FREETYPE was optional component
Now you can comile binaries and install Geant4:
```
cmake --build . --target install -- -j8
```
Geant4 is now installed in the `/usr/local/geant4/11.3.2` directory.
The installation script `build-geant4-ubuntu.sh` will do all these steps.
## Environment
In order to use Geant4 you need to define the environment variables pointing to the Geant4 datasets locations. This can be done by sourcing the _geant4.sh_ script.
In the git repository you can find the bash script `setup_env.sh` with setup both for ROOT and Geant4.
See below the code snippet:
```
# ROOT 6
if [ -x /usr/local/root/bin/thisroot.sh ]; then
. /usr/local/root/bin/thisroot.sh
fi
# Geant4
if [ -x /usr/local/geant4/11.3.2/bin/geant4.sh ]; then
. /usr/local/geant4/11.3.2/bin/geant4.sh
fi
```
You can source this script before starting to work with your Geant4 project or
add these lines in your .bash_profile to get the environment set automatically when you log in.
## Testing of installation
### 1. Open new Terminal window
### 2. Source `setup_env.sh` if not done with `.bash_profile`
- `source ~/setup_env.sh`
### 3. Test ROOT Installation
Start the ROOT interactive session:
```
$ root
------------------------------------------------------------------
| Welcome to ROOT 6.34.08 https://root.cern |
| (c) 1995-2024, The ROOT Team; conception: R. Brun, F. Rademakers |
| Built for linuxx8664gcc on Apr 07 2025, 20:24:19 |
| From tags/v6-34-08@v6-34-08 |
| With c++ (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0 |
| Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q' |
------------------------------------------------------------------
```
and type `.demo` after the ROOT prompt:
```
root [0] .demo
```
You will see the ROOT demo bar and can run some demos by clicking on the demo menu.
You need to go from up to down in the menu, some demos depend on the previous demos results.
To quit ROOT type .q on the ROOT prompt
```
root [1] .q
Taking a break from ROOT? Hope to see you back!
$
```
### 4. Test Geant4 installation
You can try to compile and run one of the Geant4 examples.
E.g. basic B1 example.
```
$ cd ~/tmp
$ mkdir B1-build
$ cd B1-build
$ cmake /usr/local/geant4/11.3.2/share/Geant4/examples/basic/B1
```
You should see something like the output below. Watch for eventual configuration errors.
```
-- The C compiler identification is GNU 13.3.0
-- The CXX compiler identification is GNU 13.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found EXPAT: /usr/lib/x86_64-linux-gnu/libexpat.so (found suitable version "2.6.1", minimum required is "2.6.1")
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found XercesC: /usr/lib/x86_64-linux-gnu/libxerces-c.so (found suitable version "3.2.4", minimum required is "3.2.4")
-- Found Freetype: /usr/lib/x86_64-linux-gnu/libfreetype.so (found suitable version "2.13.2", minimum required is "2.13.2")
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so
-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found Geant4: /usr/local/geant4/11.3.2/lib/cmake/Geant4/Geant4Config.cmake (found version "11.3.2")
-- Configuring done (10.5s)
-- Generating done (0.0s)
-- Build files have been written to: /home/semenjuk/tmp/B1-build
```
Now you can build the application with `make -j8` where -j8 is the number of parallel make processes.
```
$ make -j8
[ 12%] Building CXX object CMakeFiles/exampleB1.dir/exampleB1.cc.o
[ 25%] Building CXX object CMakeFiles/exampleB1.dir/src/ActionInitialization.cc.o
[ 37%] Building CXX object CMakeFiles/exampleB1.dir/src/DetectorConstruction.cc.o
[ 50%] Building CXX object CMakeFiles/exampleB1.dir/src/EventAction.cc.o
[ 62%] Building CXX object CMakeFiles/exampleB1.dir/src/PrimaryGeneratorAction.cc.o
[ 75%] Building CXX object CMakeFiles/exampleB1.dir/src/SteppingAction.cc.o
[ 87%] Building CXX object CMakeFiles/exampleB1.dir/src/RunAction.cc.o
[100%] Linking CXX executable exampleB1
[100%] Built target exampleB1
```
Now you can run the executable:
```
./exampleB1
```
This will open an interactive QT GUI window.
To generate N events type in the Session window:
To generate N events type in the Session window:
```
/run/beamOn N
```
To quit application type:
```
exit
```
See below the expected program output in the terminal.
*You should not see a crash dump!*
```
$ ./exampleB1
Available UI session types: [ Qt, tcsh, csh ]
**************************************************************
Geant4 version Name: geant4-11-03-patch-01 [MT] (21-March-2025)
<< in Multi-threaded mode >>
Copyright : Geant4 Collaboration
References : NIM A 506 (2003), 250-303
: IEEE-TNS 53 (2006), 270-278
: NIM A 835 (2016), 186-225
WWW : http://geant4.org/
**************************************************************
<<< Reference Physics List QBBC
...
<snip>
...
================== Deleting memory pools ===================
Pool ID '20G4NavigationLevelRep', size : 0.00288 MB
Pool ID '24G4ReferenceCountedHandleIvE', size : 0.000961 MB
Pool ID '17G4DynamicParticle', size : 0.000961 MB
Pool ID '24G4ClonedSmoothTrajectory', size : 0.000961 MB
Pool ID '29G4ClonedSmoothTrajectoryPoint', size : 0.000961 MB
Pool ID '15G4CountedObjectIvE', size : 0.000961 MB
Number of memory pools allocated: 6; of which, static: 0
Dynamic pools deleted: 6 / Total memory freed: 0.0077 MB
============================================================
G4Allocator objects are deleted.
UImanager deleted.
StateManager deleted.
RunManagerKernel is deleted. Good bye :)
RunManager is deleted.
```
## Tips ##
- Root
- ROOT comes with a web-based browser, which is now being started. Revert to TBrowser by setting "Browser.Name: TRootBrowser" in rootrc file. Or starting "root --web=off"
- libtbb must beinstalled `sudo apt install -y libtbb12`
- Geant4
- You check the Geant4 datasets installation using the command:
`geant4-config --check-datasets`
- `geant4-config --help` also shows the Geant4 features (configuration options)
Visit Geant4 installation Guide for more info:
http://geant4-userdoc.web.cern.ch/geant4-userdoc/UsersGuides/InstallationGuide/html/
- zsh
- If you use zsh you need to use .zprofile instead of .bash_profile
- Use *source* not *.* to source setup scripts
- git
- for latest git enable repository before installing git
`sudo add-apt-repository ppa:git-core/ppa`
## Geant4 Installation on Ubuntu 24.04 LTS
[[_TOC_]]
In this tutorial we will use Geant4 version 11.3.2, compiled with the support of multithreading, GDML and Qt5 based Gui.
The repository scripts was updated for Geant4 version 11.3.2,
but if you have version 11.3.1 it will work also.
On Linux systems we use a compiled version of Geant4 and a binary distribution for ROOT installations.
Below we provide detailed instructions for the installation on Ubuntu 22.04.
The installation for other Debian and Ubuntu like Linux'es will be similar but the names of libraries can be slightly different. On Linux you can use GNU *c++*, *clang* or Intel *icc* compilers, we describe only the GNU *g++* installation.
The installation was tested Windows 11 WLS2 *Ubuntu* application and gcc 13.3.
## Ubuntu 24.04 Requirements
* Ubuntu 24.04 LTS Server or Desktop installation
* *build-essential*, *curl*, *g++*, *git* and *cmake* packages
* A Bourne-compatible shell for installation (e.g. *bash* or *zsh*)
* `sudo` for library installation and directory creation under `/usr/local`
## External Dependencies Installation
Generally we follow the installation rules for ROOT described here:
https://root.cern/install/dependencies/
Some dependencies like kerberos and mysql were dropped because we do not use these features in the tutorial.
The libraries which we need for Geant4 compilation need to be installed first. For this, the `ubuntu24_deps.sh` script is provided for the Ubuntu 24.04 machine.
This script must be executed only once.
See below the code snippet:
```
apt install -y qtbase5-dev qtbase5-dev-tools qt5-qmake
apt install -y qttools5-dev
apt install -y libxerces-c-dev
apt install -y gfortran
apt install -y python3-dev python3-numpy-dev
apt install -y libxpm-dev libxft-dev libxmu-dev
apt install -y libssl-dev
apt install -y qt3d5-dev qt3d5-dev-tools
apt-get install -y libpcre3-dev xlibmesa-glu-dev \
libglew1.5-dev libftgl-dev libfftw3-dev libcfitsio-dev \
graphviz-dev libxml2-dev libgsl0-dev
apt install -y libmotif-dev
apt install -y libfreetype6-dev
```
**N.B. Upgrade you system before installation:**
```
sudo apt update
sudo apt upgrade
```
> On Ubuntu 20.04 all qt dependencies can be installed via qt-defaults package, > use the `ubuntu20_deps.sh` script to install dependencies.
## ROOT Installation
The ROOT installation is required for some exercises in this tutorial.
The tar files with precompiled ROOT binaries for Ubuntu-24.04 can be downloaded from
https://root.cern/download/:
`curl -SLO https://root.cern/download/root_v6.34.08.Linux-ubuntu24.04-x86_64-gcc13.3.tar.gz`
We will install both ROOT and Geant4 into /usr/local directory:
```
sudo tar zxf root_v6.34.08.Linux-ubuntu24.04-x86_64-gcc13.3.tar.gz -C /usr/local
sudo chown -R `id -un`:`id -gn` /usr/local/root
chmod +x /usr/local/root/bin/thisroot.*
```
All installation steps are summarized in the `install-root-ubuntu24.sh` script.
ROOT is installed in _relocatable_ mode.
To use ROOT, you must set its environment sourcing the *thisroot.sh* script from
the ROOT installation directory:
`source /usr/local/root/bin/thisroot.sh`
Visit http://root.cern.ch for more information about ROOT.
## Geant4 Installation
Install development tools and compilers packages _build-essential_, _cmake_:
```
sudo apt install -y build-essential
sudo install -y cmake
```
This is already done if you have used the _ubuntu20_deps.sh_ script to install dependencies.
Do not forget to install your favorite editor, e.g _Emacs_ :
`sudo apt install -y emacs`
<!--
You can install the precompiled version of Geant4 provided for this tutorial. You can download the tar file with precompiled Geant4 `geant4_v11.1.1.Linux-ubuntu20-x86_64-gcc9.4.tar.gz` from `llrnbox.in2p3.fr` server. The script `install-geant4-ubuntu.sh` can be used for downloading and installation of Geant4.
The link to tar.gz file with Geant4 11.3.2 binaries for Ubuntu 24.04
https://llrnbox.in2p3.fr/index.php/s/jNJcK7jHTmX3g97
The md5 sum file:
https://llrnbox.in2p3.fr/index.php/s/Y5yD3CZxYgGZxGA
N.B. You need to install Geant4 into `/usr/local/geant4/11.3.2`.
If you install the precompiled version you can skip **Build Geant4** section and go directly to **Environment**.
-->
## Build Geant4
You can download the Geant4 sources from https://geant4.web.cern.ch/support/download
or clone Geant4 repository. We use `git clone ...` in the instructions below.
In the Terminal window type the commands:
```
git clone https://gitlab.cern.ch/geant4/geant4.git
cd geant4/
git checkout v11.3.2
This will create a clone of the Geant4 11.3.2 release on your local disk.
The ROOT and Geant4 are installed with the current user as owner.
You need to create a target directory owned by my current user:
`sudo mkdir -p /usr/local/geant4/11.3.2`
`sudo chown -R `id -un`:`id -gn` /usr/local/geant4`
```
Make build configuration files with cmake:
```
mkdir geant4-build
cd geant4-build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/geant4/11.3.2 \
-DCMAKE_BUILD_TYPE=RelWithDebInfo [ -DGEANT4_BUILD_MULTITHREADED=ON ] \
-DGEANT4_INSTALL_DATA=ON -DGEANT4_USE_GDML=ON -DGEANT4_USE_QT=ON \
-DGEANT4_USE_OPENGL_X11=ON [-DGEANT4_USE_FREETYPE=ON] ../geant4
```
The multithreading enabled by default and FREETYPE was optional component
Now you can comile binaries and install Geant4:
```
cmake --build . --target install -- -j8
```
Geant4 is now installed in the `/usr/local/geant4/11.3.2` directory.
The installation script `build-geant4-ubuntu.sh` will do all these steps.
## Environment
In order to use Geant4 you need to define the environment variables pointing to the Geant4 datasets locations. This can be done by sourcing the _geant4.sh_ script.
In the git repository you can find the bash script `setup_env.sh` with setup both for ROOT and Geant4.
See below the code snippet:
```
# ROOT 6
if [ -x /usr/local/root/bin/thisroot.sh ]; then
. /usr/local/root/bin/thisroot.sh
fi
# Geant4
if [ -x /usr/local/geant4/11.3.2/bin/geant4.sh ]; then
. /usr/local/geant4/11.3.2/bin/geant4.sh
fi
```
You can source this script before starting to work with your Geant4 project or
add these lines in your .bash_profile to get the environment set automatically when you log in.
## Testing of installation
### 1. Open new Terminal window
### 2. Source `setup_env.sh` if not done with `.bash_profile`
- `source ~/setup_env.sh`
### 3. Test ROOT Installation
Start the ROOT interactive session:
```
$ root
------------------------------------------------------------------
| Welcome to ROOT 6.34.08 https://root.cern |
| (c) 1995-2024, The ROOT Team; conception: R. Brun, F. Rademakers |
| Built for linuxx8664gcc on Apr 07 2025, 20:24:19 |
| From tags/v6-34-08@v6-34-08 |
| With c++ (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0 |
| Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q' |
------------------------------------------------------------------
```
and type `.demo` after the ROOT prompt:
```
root [0] .demo
```
You will see the ROOT demo bar and can run some demos by clicking on the demo menu.
You need to go from up to down in the menu, some demos depend on the previous demos results.
To quit ROOT type .q on the ROOT prompt
```
root [1] .q
Taking a break from ROOT? Hope to see you back!
$
```
### 4. Test Geant4 installation
You can try to compile and run one of the Geant4 examples.
E.g. basic B1 example.
```
$ cd ~/tmp
$ mkdir B1-build
$ cd B1-build
$ cmake /usr/local/geant4/11.3.2/share/Geant4/examples/basic/B1
```
You should see something like the output below. Watch for eventual configuration errors.
```
-- The C compiler identification is GNU 13.3.0
-- The CXX compiler identification is GNU 13.3.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found EXPAT: /usr/lib/x86_64-linux-gnu/libexpat.so (found suitable version "2.6.1", minimum required is "2.6.1")
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Found XercesC: /usr/lib/x86_64-linux-gnu/libxerces-c.so (found suitable version "3.2.4", minimum required is "3.2.4")
-- Found Freetype: /usr/lib/x86_64-linux-gnu/libfreetype.so (found suitable version "2.13.2", minimum required is "2.13.2")
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libOpenGL.so
-- Found X11: /usr/include
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
-- Found Geant4: /usr/local/geant4/11.3.2/lib/cmake/Geant4/Geant4Config.cmake (found version "11.3.2")
-- Configuring done (10.5s)
-- Generating done (0.0s)
-- Build files have been written to: /home/semenjuk/tmp/B1-build
```
Now you can build the application with `make -j8` where -j8 is the number of parallel make processes.
```
$ make -j8
[ 12%] Building CXX object CMakeFiles/exampleB1.dir/exampleB1.cc.o
[ 25%] Building CXX object CMakeFiles/exampleB1.dir/src/ActionInitialization.cc.o
[ 37%] Building CXX object CMakeFiles/exampleB1.dir/src/DetectorConstruction.cc.o
[ 50%] Building CXX object CMakeFiles/exampleB1.dir/src/EventAction.cc.o
[ 62%] Building CXX object CMakeFiles/exampleB1.dir/src/PrimaryGeneratorAction.cc.o
[ 75%] Building CXX object CMakeFiles/exampleB1.dir/src/SteppingAction.cc.o
[ 87%] Building CXX object CMakeFiles/exampleB1.dir/src/RunAction.cc.o
[100%] Linking CXX executable exampleB1
[100%] Built target exampleB1
```
Now you can run the executable:
```
./exampleB1
```
This will open an interactive QT GUI window.
To generate N events type in the Session window:
To generate N events type in the Session window:
```
/run/beamOn N
```
To quit application type:
```
exit
```
See below the expected program output in the terminal.
*You should not see a crash dump!*
```
$ ./exampleB1
Available UI session types: [ Qt, tcsh, csh ]
**************************************************************
Geant4 version Name: geant4-11-03-patch-01 [MT] (21-March-2025)
<< in Multi-threaded mode >>
Copyright : Geant4 Collaboration
References : NIM A 506 (2003), 250-303
: IEEE-TNS 53 (2006), 270-278
: NIM A 835 (2016), 186-225
WWW : http://geant4.org/
**************************************************************
<<< Reference Physics List QBBC
...
<snip>
...
================== Deleting memory pools ===================
Pool ID '20G4NavigationLevelRep', size : 0.00288 MB
Pool ID '24G4ReferenceCountedHandleIvE', size : 0.000961 MB
Pool ID '17G4DynamicParticle', size : 0.000961 MB
Pool ID '24G4ClonedSmoothTrajectory', size : 0.000961 MB
Pool ID '29G4ClonedSmoothTrajectoryPoint', size : 0.000961 MB
Pool ID '15G4CountedObjectIvE', size : 0.000961 MB
Number of memory pools allocated: 6; of which, static: 0
Dynamic pools deleted: 6 / Total memory freed: 0.0077 MB
============================================================
G4Allocator objects are deleted.
UImanager deleted.
StateManager deleted.
RunManagerKernel is deleted. Good bye :)
RunManager is deleted.
```
## Tips ##
- Root
- ROOT comes with a web-based browser, which is now being started. Revert to TBrowser by setting "Browser.Name: TRootBrowser" in rootrc file. Or starting "root --web=off"
- libtbb must beinstalled `sudo apt install -y libtbb12`
- Geant4
- You check the Geant4 datasets installation using the command:
`geant4-config --check-datasets`
- `geant4-config --help` also shows the Geant4 features (configuration options)
Visit Geant4 installation Guide for more info:
http://geant4-userdoc.web.cern.ch/geant4-userdoc/UsersGuides/InstallationGuide/html/
- zsh
- If you use zsh you need to use .zprofile instead of .bash_profile
- Use *source* not *.* to source setup scripts
- git
- for latest git enable repository before installing git
`sudo add-apt-repository ppa:git-core/ppa`