EMP BWEC

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==== PRIMASOFT Installation ====
**Docker installation**\\
The PRIMA software for analysis, simulation, etc. is inside a Docker container. In case you are not running primasoft in any of EMP's pc's, then first you will need to install Docker. Check how to do it here:
  * [[https://docs.docker.com/engine/install/ubuntu/#install_docker_ubuntu|Install Docker Engine for Ubuntu]]
  * [[https://docs.docker.com/desktop/setup/install/windows-install/#install_docker_windows|Install Docker Desktop for Windows]]
  * [[https://docs.docker.com/desktop/setup/install/mac-install/#instal_docker_macos|Install Docker Desktop for Mac]]
  * [[https://www.youtube.com/watch?v=tjqd1Fxo6HQ/#youtube_installubuntu_video|Youtube video concerning Ubuntu Installation]]\

**Git clone the image**\\
Now you need to pull the Docker image from the EMP GitLab repository. Open a new terminal, and do:
<code>
git clone https://gitlab.rlp.net/emp/primasoft.git
</code>

**Start the container**\\
Before starting the proper docker container, you need to add your personal user into the docker group. For that, do:
<code>
usermod -a -G <user> docker
</code>
After that, you will need to 're-enter' into your user session to make sure your user is now inside the docker group. For doing this, you can always restart the computer, or type in a terminal 
<code> 
su <user_name>
</code>
and then write 
<code>
groups
</code>

Once you type that, you should be able to see all groups your user is in, so the ''docker'' name should appear there.

**Starting the container and testing the simulation**\\
Now you need to start the container so you can run the full primasoft. Write:
<code>
$ cd primasoft
$ ./start_run.sh
</code>

A new container with the name primaSoft-dev should be created. After running ./start_run.sh The output should look like this:
<code>
./start_run.sh
The default directory for G4WORKDIR is /home/foski/geant4_workdir. You can change it by adding -DG4WORKDIR=${Your_Host_Dir} to run this script.
access control disabled, clients can connect from any host
starting new container with name primaSoft-dev...
Unable to find image 'registry.gitlab.rlp.net/emp/docker_image_test/prima_soft_nonsu:2501' locally
2501: Pulling from emp/docker_image_test/prima_soft_nonsu
54609b48ebc1: Pull complete 
37577e941a51: Pull complete 
e8d35fa376e8: Pull complete 
279d4a417a51: Pull complete 
ae2ad9eaf997: Pull complete 
acacd230c1e4: Pull complete 
17d4bdcfb566: Pull complete 
45ec860a2ac8: Pull complete 
4f4fb700ef54: Pull complete 
Digest: sha256:e4ebe8a28daf2f3a94d323882e54773d6ee072a71ecd740e38d1065f285618ca
Status: Downloaded newer image for registry.gitlab.rlp.net/emp/docker_image_test/prima_soft_nonsu:2501
ec6f1e35929d0f6f8720fc46ec303b2d4993dd43aa61526b0f61b523f6fcd35d
new container started with id ec6f1e35929d
G4VMCDIR set to /opt/g4vmc/6.6p1_install
ubuntu@oskar:~/primasoft$ 
</code>

The last line means your are already inside the container under the ''ubuntu'' username.

== Set the environment == 

<code>
source ./setenv.sh
cd utils/
make
cd ~/primasoft/analysis
mkdir lib
make
</code>

== Compile geant4 simulation ==

<code>
cd ~/primasoft/geant4
make
</code>

== Execute geant4 simulation ==

<code>
geant4$ primag4sim primag4sim.conf
</code>

**Rootmacros** \\
In order to execute rootmacros, the include paths need to be set.\\
This can be done automatically with a ''rootlogon.C'' file.\\
Create the rootlogon.C file:
<code>
$ cd ~/
$ mkdir .rootlogon
$ geany .rootlogon/rootlogon.C
</code>

Enter the following lines to your rootlogon.C file:
<code>
// This is the file rootlogon.C                                                 
{
  printf("\n Beginning new ROOT session\n");

  gROOT->ProcessLine(".include your_path/primasoft/geant4");
  gSystem->Load("<geant4_workdir>/tmp/Linux-g++/primag4sim/libprimadict.so");                              
}
</code>

Here, ''your_path'' is the path to the primasoft git repository and the ''<geant4_workdir>'' can be found out by ''$ echo $G4WORKDIR''.\\

Now root needs to know where to find the rootlogon.C file. Therefore in ''$FAIRSOFT_BUILD_DIR'/share/root/etc/system.rootrc' change the line:

<code>
Rint.Logon:    rootlogon.C
</code>

to:

<code>
Rint.Logon:    ~/.rootlogon/rootlogon.C
</code>


Now you can execute the rootmacro:
<code>
/geant4$ root -l rootmacros/test.C+
</code>