Opticks-Tool for LArSoft.

⚙️ Prerequisites

• CUDA Toolkit 13 Update 2 (Tested)
• NVIDIA GPU with OptiX support (9) (Tested)
• Geant4 (with GDML support enabled)
• Opticks
• ROOT (for hit testing)

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🛠️ Installation

It has to be cloned under srcs folder along other LArSoft packages such as larsim. It will be automatically detected and compiled during "mrb i"

1. Clone Repositories

git clone https://github.com/nuRiceLab/laropticks

2. Compile

Compile it with other LArSoft packages as follows

mrb i -j20 

3. Example Run

Source some enviroment variables for opticks

source laropticks/OpticksEnv

Within your working directory, test the tool by following Run a single GENIE event

lar -n 1 -c prodgenie_nu_dune10kt_1x2x6.fcl -o Genie.root

Then load the Geni.root file to simulate optical photons

lar -n 1 -c standard_opticks_dune10kt.fcl -s Genie.root -o opticks.root