Generation 1 — MC

SBN Production — Gen 1 Monte Carlo Samples

Monte Carlo (MC)


Central Value MC Samples


BNB + Light MC

5e18 Development Sample

StageCode VersionSample Definition
reco1v10_06_00mc_MCP2025B_5e18_prodgenie_corsika_proton_rockbox_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_5e18_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_5e18_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_5e18_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_flat_caf_sbnd

Medium Development Sample

StageCode VersionSample Definition
reco1v10_06_00mc_MCP2025B_prodgenie_corsika_proton_rockbox_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_flat_caf_sbnd

Full 1e20 POT Sample

StageCode VersionSample Definition
reco1v10_06_00_02mc_MCP2025B_1e20_02_prodgenie_corsika_proton_rockbox_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_1e20_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025C_1e20_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025C_1e20_v10_06_00_09_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_flat_caf_sbnd
Validation productions: Fall 2025 central-value validation samples. For analysis, prefer the development / 1e20 samples above.

Fall25 Validation II — BNB Light (1e19 POT)

Note: ~600k events.
StageCode VersionSample Definition
reco1mc_MCP2025C_FallValidationII_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntupleshist_mc_MCP2025C_FallValidationII_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_reco2_sbnd
cafmc_MCP2025C_FallValidationII_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_caf_sbnd
flatcafmc_MCP2025C_FallValidationII_prodgenie_corsika_proton_rockbox0p1_sbnd_CV_caf_flat_caf_sbnd

Fall25 Validation — BNB + Cosmics (DNN)

Note: ~450k events.
StageCode VersionSample Definition
calibntuplesv10_10_03_02hist_mc_MCP2025_FallValidation_DNN_prodgenie_corsika_proton_rockbox_sbnd_CV_reco2_sbnd
cafv10_10_03_02mc_MCP2025_FallValidation_DNN_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_sbnd
flatcafv10_10_03_02mc_MCP2025_FallValidation_DNN_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_flat_caf_sbnd

Fall25 Validation — BNB + Cosmics (Traditional)

Note: ~450k events.
StageCode VersionSample Definition
calibntuplesv10_10_03_02hist_mc_MCP2025_FallValidation_trad_prodgenie_corsika_proton_rockbox_sbnd_CV_reco2_sbnd
cafv10_10_03_02mc_MCP2025_FallValidation_trad_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_sbnd
flatcafv10_10_03_02mc_MCP2025_FallValidation_trad_prodgenie_corsika_proton_rockbox_sbnd_CV_caf_flat_caf_sbnd

Off-Beam + Light MC

5e18 Development Sample

StageCode VersionSample Definition
reco1v10_06_00mc_MCP2025B_5e18_prodcorsika_proton_intime_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_5e18_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_5e18_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_5e18_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_flat_caf_sbnd

Medium Development Sample

StageCode VersionSample Definition
reco1v10_06_00mc_MCP2025B_prodcorsika_proton_intime_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_flat_caf_sbnd

Full 1e20 POT Sample

StageCode VersionSample Definition
reco1v10_06_00_02mc_MCP2025B_1e20_02_prodcorsika_proton_intime_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_1e20_v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_1e20__v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_1e20__v10_06_00_09_prodcorsika_proton_intime_sbnd_CV_caf_flat_caf_sbnd
Validation productions: Fall 2025 central-value validation samples. For analysis, prefer the development / 1e20 samples above.

Fall25 Validation — Intime Cosmics (DNN)

Note: ~80k events.
StageCode VersionSample Definition
calibntuplesv10_10_03_02hist_mc_MCP2025_FallValidation_prodcorsika_proton_intime_sbnd_CV_reco2_sbnd
cafv10_10_03_02mc_MCP2025_FallValidation_prodcorsika_proton_intime_sbnd_CV_caf_sbnd
flatcafv10_10_03_02mc_MCP2025_FallValidation_prodcorsika_proton_intime_sbnd_CV_caf_flat_caf_sbnd


Special MC Samples


Low Threshold “Dirt” MC

Full Sample

StageCode VersionSample Definition
reco1v10_06_00_05mc_MCP2025B_prodgenie_corsika_proton_rockbox_lowenergydirt_sbnd_CV_gen_g4_detsim_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_lowenergydirt_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_lowenergydirt_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025B_v10_06_00_09_prodgenie_corsika_proton_rockbox_lowenergydirt_sbnd_CV_caf_flat_caf_sbnd

Intrinsic νe MC

Full Sample

StageCode VersionSample Definition
reco1v10_06_02mc_MCP2025B_prodgenie_corsika_proton_rockbox_ccnue_sbnd_reco1_sbnd
calibntuplesv10_06_00_09hist_mc_MCP2025C_v10_06_00_09_prodgenie_corsika_proton_rockbox_ccnue_sbnd_CV_reco2_sbnd
cafv10_06_00_09mc_MCP2025C_v10_06_00_09_prodgenie_corsika_proton_rockbox_ccnue_sbnd_CV_caf_sbnd
flatcafv10_06_00_09mc_MCP2025C_v10_06_00_09_prodgenie_corsika_proton_rockbox_ccnue_sbnd_CV_caf_flat_caf_sbnd

GIBUU BNB + Cosmics MC

Note: GiBUU generator variation. ~200k events.

Full Sample

StageCode VersionSample Definition
reco1v10_06_00_09mc_SBND2026A_gen1_prodgenie_corsika_proton_rockbox_sbnd_GIBUU_CV_v10_06_00_09_reco1_sbnd
flatcafv10_06_00_09mc_SBND2026A_gen1_prodgenie_corsika_proton_rockbox_sbnd_GIBUU_CV_v10_06_00_09_flatcaf_sbnd

Systematic Variations


Usage Note: When using these samples you will need to make sure that the run, subrun, event, and a neutrino truth property are matched across the nominal sample and each systematic sample separately. This will remove any statistical fluctuations.

Spring 2025 (MCP2025B)

VariationSample Definition (flatcaf)
Nominalmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_CV_caf_flat_caf_sbnd
No SCE Variationmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_0xSCE_caf_flat_caf_sbnd
Twice SCE Variationmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_2xSCE_caf_flat_caf_sbnd
PMT Gain Variationmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_PMTGainFluct_caf_flat_caf_sbnd
PMT QE Variationmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_PMTLowEff_caf_flat_caf_sbnd
PMT High SPE Noisemc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_PMTHighNoise_caf_flat_caf_sbnd
WireMod X-θxwmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_WireMod_XThetaXW_caf_flat_caf_sbnd
WireMod Y-Zmc_MCP2025B_1e20_10_prodgenie_corsika_proton_rockbox_sbnd_SystVar_WireMod_YZ_caf_flat_caf_sbnd

Fall Production 2025 (SBND2026A)

Note: ~6.8M events each.
VariationSample Definition (flatcaf)
WireMod Y-Zmc_SBND2026A_prodgenie_corsika_proton_rockbox_sbnd_SV_v10_06_00_10_flatcaf_sbnd
WireMod X-θXWmc_SBND2026A_prodgenie_corsika_proton_rockbox_sbnd_wiremod_X-ThetaXW_v10_06_00_10_flatcaf_sbnd