Simulation I - Geant-4 and TCAD

Name: Simulation I - Geant-4 and TCAD
Start: 2022-09-29T10:00:00-03:00
End: 2022-09-29T12:00:00-03:00
Location: No location set

Thursday 29 Sept 2022, 10:00 → 12:00 America/Sao_Paulo

Description

Link to Gitlab Projects :

https://gitlab.com/usp9/UFSD/simulation/tcad-simulations

https://gitlab.com/usp9/UFSD/simulation/kdetsim

Link to documentation :

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Organization (M. Leite) :

See slides in introduction;
we will follow all issues on gitlab (targets and deadlines);
people need to have an Indico account to upload material to the agenda - please act
please create a branch with your name for your working version and request merge when OK.
next meeting will be on Thursday Oct. 6th 15:20 - 16:20 due to conflicts
Moving to Gitlab Ultimate (ed. License). Invitations will be sent and development will switch to this instance

TCAD Simulation (R. Buhler):

Success opening TCAD geometry for AC-LGAD example sent by Taylor (UCSC)
Problems reported running the field simulation
M. Leite sent email to Taylor @UCSC putting R. Buhler and R. Giacomini in contact for debugging this issue

Geant4 Simulation (M. Moralles):

Geant4 v. 11.x is working (see figure attached)
First example running on GDML geometry based on Taylor AC-LGAD TCAD files information - we need to verify the consistency
Using a non-optimized physics process for fotons @ keV energy range. M. Moralles will switch to this new process as next step
Data will be saved as a root file . Proposed format for each event is (x,y,z,Q,process). This can be changed or converted to anything to be passed to TCAD
First simulations will use monochromatic beam : 1keV to 30 keV in steps of 1 keV
Beam will have no divergence for now
Beam to enter from strip side
World volume material is air. This may need to change for low energy X-Rays (vacuum) .
Low priority: Review GDML to include loop structures and replications (this is only supported in Geant, so it needs a working example to debug)

Action Items (for next meeting on Oct. 6th). These will be issues on Gitlab and we will follow the discussion there .

TCAD Simulation (R. :
- Solve the TCAD simulation issue for electrical field with Taylor's help (R. Buhler)
- Extract E field for AC-LGAD baseline example on gitlab (R. Buhler)
- Validate simulation against Taylor's results.(R. Buhler)
- Aiming to present and discuss the results on next meeting (providing the issue is solved) (R. Buhler)
Geant4 Simulation :
- Update the physics model for low energy photons (keV) (M. Moralles)
- Save the data as Root format for first evaluation (see above) (M. Moralles)
- Read the Root file, provide comments and extract information (M. Leite, M. Moralles)
Provide registration in Indico as external user (for those without CERN account)

M. Leite, 29/09/2022

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