FSD cosmic simulation

Cosmic ray simulation for the FSD based on CORSIKA generated air showers.

FSD_CosmicRun1 (charge-only)

Web link: https://portal.nersc.gov/project/dune/data/FSD/simulation/FSD_CosmicRun1/

NERSC dir: /global/cfs/projectdirs/dune/www/data/FSD/simulation/FSD_CosmicRun1/

This run is a charge-only simulation sample (light simulation to follow) up to and including the ndlar-flow stage. A total of 468 flow files are available after a ~10% failure rate in the edep-sim and larnd-sim processing.

Software versions/commits

• 2x2_sim: a9d8f281
• larndsim: 8d498768
• ndlar_flow: 4cce7505

Known issues and crashes

• Segfault in edep-sim simulation for ~30 files. Most likely related to something in the geometry description.
• CUDA segfault (?) in larnd-sim. Fails at the following line but at a different point each time:

  File "/pscratch/sd/c/cuddandr/fsd_sim/run-larnd-sim/larnd-sim/cli/simulate_pixels.py", line 1091, in run_simulation
    pixels_tracks_signals = cp.zeros(len(detector.TIME_TICKS) * int(num_backtrack.sum()))
                                                                ^^^^^^^^^^^^^^^^^^^^^^^^

FSD_CosmicRun2 (charge-only)

Web link: https://portal.nersc.gov/project/dune/data/FSD/simulation/FSD_CosmicRun2/

NERSC dir: /global/cfs/projectdirs/dune/www/data/FSD/simulation/FSD_CosmicRun2/

This simulation sample is charge-only and includes several updates to the simulation to fix several bugs and better reflect data-taking conditions. All 512 files completed without issue, and the total sample size is approximately the same as CosmicRun1. Notable changes/fixes include: corrected drift distance, channel-by-channel thresholds, larnd-sim file compression.

Software versions/commits

• 2x2_sim: c589d95e
• larndsim: cff76999
• ndlar_flow: 625d7a33