Garfpp-chargingup

Algorithm for charging-up calculations in Micro Patterned Gaseous Detectors such GEM and THGEM, developed in Garfield++

This is a short manual for the simulation tool-kit of charging up process in THGEMs.

updated on February 2018

Authors

• Pedro Correia [pmcorreia@ua.pt]
• Michael Pitt [michael.pitt@cern.ch]

References

1. P. M. M. Correia and M. Pitt, "Charging-up algorithm for garfield++” https://github.com/pmcorreia/Garfpp-chargingup.git, 2018.
2. P. M. M. Correia, M. Pitt et al., “Simulation of gain stability of THGEM gas-avalanche particle detectors “, JINST (2018) 13 P01015

Table of contents (for lxplus):

1. Integrate the code with GarfieldPP
2. Run with bsub (working on lxplus)

Integrate the code with garfieldPP

Checking out the code:

git clone https://github.com/pmcorreia/Garfpp-chargingup.git

set up GARFIELD_HOME env

export GARFIELD_HOME=PATH_TO_GARFIELD/GarfieldP

set up root5.X

lsetup "root 5.34.21-x86_64-slc6-gcc48-opt"

compile the code

make

now you are ready to run the code, there are two examples in the Ansys folder, in order to use them, first need to unzip the folders, excecute the simulation in the run directory

cd run

tar -zxvf ../Ansys/THGEM_pitch1.0mm_thickness0.4mm_holediameter0.5mm_rim0.50mm_slices22_ed0.5_ei0.5kVcm-1.tar.gz

or

tar -zxvf ../Ansys/THGEM_pitch1.0mm_thickness0.4mm_holediameter0.5mm_rim0.70mm_slices22_ed0.5_ei0.5kVcm-1.tar.gz

❗❗❗ Once the simulation will be launched, the files will be modified. ❗❗❗

❗❗❗ don't run several simulations on the same folder, duplicate the folders to /tmp/ ❗❗❗

Modify ListRun.txt accorging to what you need, and run:

./Run.sh ListRun.txt

the macro, will create an executable file in the /tmp/ directory, and will write the file that need to be executed. execute the suggested command to start the simulation. In the uploaded example, you should run:

source /tmp/$LOGNAME/ChargingUP_Gas_ar95-co2_t_0.4_rim_0.50_900V_np_50_step1000000_iter5/charging_up_submission.sh the output will be in the

/tmp/$LOGNAME/ChargingUP_Gas_ar95-co2_t_0.4_rim_0.50_900V_np_50_step1000000_iter5 folder, you can combine all file in a single ROOT file using next lines:

localSetupSFT --cmtConfig=x86_64-slc6-gcc48-opt pyanalysis/1.4_python2.7

./ConvertToSingleROOT.sh /tmp/$LOGNAME/ChargingUP_Gas_ar95-co2_t_0.4_rim_0.50_900V_np_50_step1000000_iter5

now you can analyze the output by modifying fist line in AnalyzeFolder.cc, and running it with root

root -l AnalyseFolder.cc

Run with bsub

...