Campaign 2026-05

This page documents the 2026-05 meson structure simulation campaign.

(!) For the list of files go to DATA PAGE

Overview

This is the first full production campaign that incorporates the fixes from the 2026-04 investigation into the Lambda MCParticle / tracking-volume bugs:

• eic/epic#1069 — MCParticle endpoints / daughter tree for Lambdas
• eic/epic#1081 — Tracking-volume G4 handler dropping Lambda decay info

Two DD4hep flavors are produced in parallel:

• dd4hep — fixed/updated tracking volume (default, used for reconstruction-based analyses)
• dd4hep_saveall — keeps all MCParticles (no tracking volume filter); used as the basis for acceptance / MC-truth performance studies and as the input to EICrecon in this campaign.

(!) All acceptance studies must use dd4hep_saveall data. See campaign 2026-04 for the rationale.

Energy ranges:

1. 5x41 GeV
2. 10x100 GeV
3. 10x130 GeV
4. 18x275 GeV

DIS parameters:

• x = 0.0001 - 1.0000
• q2 = 1 - 500

Statistics:

• 5000 events per job
• priority queues: first 1'000'000 events (200 files) per energy range

Software stack

Built and run with a custom singularity image based on the EIC eic_xl stack:

/work/eic3/users/romanov/meson-structure-work/eicdev-eic-full-2026-04-25.sif

Pinned for reference (used while bootstrapping the campaign):

/cvmfs/singularity.opensciencegrid.org/eicweb/eic_xl:26.03.1-stable

Data layout (ifarm)

Base directory:

/work/eic3/users/romanov/meson-structure-2026-05

Subdirectories:

• afterburner — event generator output with crossing-angle + beam effects applied
• dd4hep — DD4hep full simulation, fixed tracking volume (edm4hep.root)
• dd4hep_saveall — DD4hep full simulation, all MCParticles saved (edm4hep.root)
• reco — EICrecon reconstruction of dd4hep_saveall (edm4eic.root)
• csv_dd4hep — CSV tables from dd4hep (acceptance / MC truth, fixed volume)
• csv_dd4hep_saveall — CSV tables from dd4hep_saveall (acceptance / MC truth, all particles)
• csv_reco — CSV tables from reco

Pipeline config

The campaign is driven by full-sim-pipeline/config-campaign-26-05.yaml:

base_dir: "/work/eic3/users/romanov/meson-structure-2026-05"
container: "/work/eic3/users/romanov/meson-structure-work/eicdev-eic-full-2026-04-25.sif"
energies: ["5x41", "10x100", "10x130", "18x275"]
event_count: 5000

# DD4hep, fixed tracking volume
dd4hep_input:  "${base_dir}/afterburner/${energy}-priority"
dd4hep_output: "${base_dir}/dd4hep/${energy}"

# DD4hep, all MCParticles saved (acceptance studies + reco input)
dd4hep_saveall_input:  "${base_dir}/afterburner/${energy}-priority"
dd4hep_saveall_output: "${base_dir}/dd4hep_saveall/${energy}"

# CSV tables
csv_dd4hep_input:          "${dd4hep_output}"
csv_dd4hep_output:         "${base_dir}/csv_dd4hep/${energy}"
csv_dd4hep_saveall_input:  "${dd4hep_saveall_output}"
csv_dd4hep_saveall_output: "${base_dir}/csv_dd4hep_saveall/${energy}"

# Reconstruction runs on the saveall flavor
eicrecon_input:     "${dd4hep_saveall_output}"
eicrecon_output:    "${base_dir}/reco/${energy}"
csv_eicrecon_input:  "${eicrecon_output}"
csv_eicrecon_output: "${base_dir}/csv_reco/${energy}"

Commands log

mkdir -p /work/eic3/users/romanov/meson-structure-2026-05

# cd where scripts are
cd /home/romanov/meson-structure-work/meson-structure

# sync python env
uv sync

# DD4hep (fixed tracking volume) jobs
uv run full-sim-pipeline/20_create_npsim_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml

# DD4hep saveall jobs (input for EICrecon and for acceptance studies)
uv run full-sim-pipeline/21_create_npsim_saveall_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml

# EICrecon jobs (run on dd4hep_saveall output)
uv run full-sim-pipeline/30_create_eicrecon_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml

# CSV converters
uv run full-sim-pipeline/40_create_csv_dd4hep_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml
uv run full-sim-pipeline/41_create_csv_dd4hep_saveall_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml
uv run full-sim-pipeline/42_create_csv_eicrecon_jobs.py \
    --config full-sim-pipeline/config-campaign-26-05.yaml