diff --git a/.github/workflows/celeritas.json b/.github/workflows/celeritas.json
new file mode 100644
index 0000000000..4a8ba362b2
--- /dev/null
+++ b/.github/workflows/celeritas.json
@@ -0,0 +1,29 @@
+{
+  "geometry_file": "${detector_config}.gdml",
+  "event_file": "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.hepmc",
+  "output_file": "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.json",
+  "physics_output_file": "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.root",
+  "offload_output_file":
+      "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.offloaded.hepmc3",
+  "num_track_slots": 1024,
+  "initializer_capacity": 32768,
+  "secondary_stack_factor": 2,
+  "physics_list": "celer_ftfp_bert",
+  "field_type": "uniform",
+  "field": [
+    0.0,
+    0.0,
+    1.7
+  ],
+  "field_options": {
+    "minimum_step": 1e-06,
+    "delta_chord": 0.025,
+    "delta_intersection": 1e-05,
+    "epsilon_step": 1e-05
+  },
+  "use_device": false,
+  "sd_type": "event_hit",
+  "step_diagnostic": false,
+  "step_diagnostic_bins": 8,
+  "slot_diagnostic_prefix": "slot-diag-cpu-"
+}
diff --git a/.github/workflows/celeritas.yml b/.github/workflows/celeritas.yml
new file mode 100644
index 0000000000..e1704cac17
--- /dev/null
+++ b/.github/workflows/celeritas.yml
@@ -0,0 +1,47 @@
+name: Celeritas
+
+on:
+  workflow_call:
+    inputs:
+      detector_configs:
+        required: true
+        type: string
+
+jobs:
+  celeritas:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        detector_config: ${{fromJson(inputs.detector_configs)}}
+    steps:
+    - uses: actions/checkout@v4
+    - uses: actions/download-artifact@v4
+      with:
+        name: build-gcc-fast-eic-shell
+        path: install/
+    - uses: cvmfs-contrib/github-action-cvmfs@v4
+    - uses: eic/run-cvmfs-osg-eic-shell@main
+      with:
+        platform-release: "jug_xl:nightly"
+        network_types: "none"
+        setup: install/bin/thisepic.sh
+        run: |
+          # convert to gdml, but with sensitive detectors included
+          scripts/convert_to_gdml.py --compact $DETECTOR_PATH/${{matrix.detector_config}}.xml --output ${{matrix.detector_config}}.gdml | sed '/G4Exception-START/,+7d'
+          # create celeritas input file from template
+          export detector_config=${{matrix.detector_config}}
+          cat .github/workflows/celeritas.json | envsubst > ${{matrix.detector_config}}.json
+          # copy remote file
+          xrdcp root://dtn-eic.jlab.org//work/eic2/EPIC/EVGEN/CI/pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.hepmc .
+          # run celeritas
+          celer-g4 ${{matrix.detector_config}}.json
+    - uses: actions/upload-artifact@v4
+      with:
+        name: celeritas_${{matrix.detector_config}}_pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.json
+        path: "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.json"
+        if-no-files-found: error
+    - uses: actions/upload-artifact@v4
+      with:
+        name: celeritas_${{matrix.detector_config}}_pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.root
+        path: "pythia8NCDIS_5x41_minQ2=1_beamEffects_xAngle=-0.025_hiDiv_1_20ev.root"
+        if-no-files-found: error
diff --git a/.github/workflows/linux-eic-shell.yml b/.github/workflows/linux-eic-shell.yml
index 51929f024e..70d2d595be 100644
--- a/.github/workflows/linux-eic-shell.yml
+++ b/.github/workflows/linux-eic-shell.yml
@@ -191,6 +191,14 @@ jobs:
     with:
       detector_configs: ${{needs.list-detector-configs.outputs.configs_json}}
 
+  celeritas:
+    needs:
+      - build
+      - list-detector-configs
+    uses: ./.github/workflows/celeritas.yml
+    with:
+      detector_configs: "['epic_craterlake_no_bhcal']"
+
   dump-constants:
     runs-on: ubuntu-latest
     needs: build
diff --git a/scripts/convert_to_gdml.py b/scripts/convert_to_gdml.py
index f5675d3bfd..bded0f3608 100755
--- a/scripts/convert_to_gdml.py
+++ b/scripts/convert_to_gdml.py
@@ -37,9 +37,9 @@ def run():
   writer.enableUI()
   kernel.registerGlobalAction(writer)
   ui.Commands = [
+      '/run/initialize',
       '/ddg4/Writer/Output {}'.format(args.output),
       '/ddg4/Writer/OverWrite 1',
-      '/ddg4/Writer/ModuleDepth 1',
       '/ddg4/Writer/write'
       ]
   kernel.configure()