GLAD-TPC Software

The GLAD-TPC Framework

GLAD-TPC (HYDRA) is part of the R3BRoot software, the Monte Carlo simulation and experimental data analysis of the R3B (Reactions with Relativistic Radioactive Beams) nuclear physics experiments at the FAIR research center (Facility for Antiproton and Ion Research).

For the software-related user support you can post a new topic on our forum.

Release Information

Please visit releases

Contributing

Please ask your questions, request features, and report issues by creating a github issue.

Code Formatting

The GLAD-TPC project (as part of R3BRoot) uses clang-format-15 to ensure a common code formatting. The script "apply-format.sh" can be used for this purpose:

source apply-format.sh

Step by Step Installation

Required software

First, you will need to install FairSoft and FairRoot and R3BRoot. For more details: instructions. FaiSoft version: nov22p1 FairROOT version: v18.8.0 Newer versions will not work properly with the simulation.

Configure and compile

Follow the instructions in the R3BRoot README.

Simulations

For the general R3BRoot simulations, follow the instructions in R3BRoot README.

The steps to properly run the glad-tpc simulation:

1. Create all the necessary files to run the code:

   1. The particle generator needs to be created, to do so go in the folder /glad-tpc/gtpgen/ and run the macro INCL_Background_ASCIIGenerator.cc to generate the bkg or PhaseSpaceDecay_hypertriton_ASCIIGenerator.cc to generate the hypertriton decay. The instructions are inside the macros. The output of the macros could be found in the folder /glad-tpc/gtpgen/ASCII/
   2. The geometry of the detector you want to use should be already in the folder /glad-tpc/geometry/ if it is not the case, go in the folder /glad-tpc/macros/geo/ and run the macro for the geometry you want.

2. How to run the simulation, in the folder /glad-tpc/macros/sim there are 2 macros:

   1. simHYDRA.C: Needs the files created in step 1 to produce the events.
   2. run_simHYDRA: It requires the definition of the number of events, geometry and generator you want to use. In output will produce par.root, sim.root and two .png figures (these to check that the chamber is well placed).

3. Check the simulation output, in the folder of the geometry chosen ,e.g. Prototype, there are the following macros:

   1. eventDisplay.C: To see the geometry and the particles event by event. Be careful, close it from the terminal (.q).
   2. checkAll.C: Checks the primary, Points and Hits characteristics.

4. Electron drift, in the folder /glad-tpc/macros/proj/ there are several macros, the important ones are:

   1. run_proj.root: Simple projection of the tracks onto the pad planes, produce in output the file proj.root.
   2. readProjPoints.C: General macro for checking the projPoints from the projector.

5. Visualization of the pad plane, in the folder /glad-tpc/macro/vis there is the macro readVPadPlane.C: This macro plots the output of the glad-tpc projector: plots the R3BGTPCProjPoint which contains the virtual pads calculated after the projection of the track.

6. Electronics response, in the folder /glad-tpc/macro/electronics there is the macro Electronics_MT.C: This macro simulate the electronics response.

How to run the simulations

It is possible to use the bash script run_full.sh to run all these steps at once. BE CAREFUL, set first the wanted parameters in the different folders.

Data Analysis

...Under development...