{"module":"dark_matter_lab_calibration","description":"Environmental background calibration for underground dark matter experiments","timestamp":"2026-04-21T09:06:06.762330+00:00","labs":{"LNGS":{"name":"Laboratori Nazionali del Gran Sasso","country":"Italy","lat":42.45,"lon":13.55,"depth_mwe":3400,"rock_type":"limestone","experiments":["DAMA/LIBRA","XENON1T","XENONnT","GERDA","Borexino","DarkSide"],"muon_flux_m2s_sr":0.01424279,"features":{"dmlc_seismic_noise_floor_nm":20.9268,"dmlc_muon_flux_rate_m2s":0.01424279,"dmlc_neutron_background_rate":1.2018,"dmlc_radon_emanation_proxy":84.0,"dmlc_gravity_gradient_noise_ngal":0.007542,"dmlc_atmospheric_pressure_hpa":1000.51,"dmlc_temperature_stability_mk":1.715,"dmlc_depth_mwe":3400,"dmlc_overburden_density_kg_m3":2700.0,"dmlc_nearest_seismic_station_km":8.7,"dmlc_cultural_noise_proxy":0.4852,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.5486,"dmlc_calibration_confidence":0.696},"elapsed_s":0.298},"SURF":{"name":"Sanford Underground Research Facility","country":"USA","lat":44.35,"lon":-103.75,"depth_mwe":4300,"rock_type":"rhyolite","experiments":["LZ","MAJORANA","Deep Underground Neutrino Experiment"],"muon_flux_m2s_sr":0.00150118,"features":{"dmlc_seismic_noise_floor_nm":17.5399,"dmlc_muon_flux_rate_m2s":0.00150118,"dmlc_neutron_background_rate":2.9784,"dmlc_radon_emanation_proxy":162.75,"dmlc_gravity_gradient_noise_ngal":0.005853,"dmlc_atmospheric_pressure_hpa":999.95,"dmlc_temperature_stability_mk":1.525,"dmlc_depth_mwe":4300,"dmlc_overburden_density_kg_m3":2500.0,"dmlc_nearest_seismic_station_km":0.0,"dmlc_cultural_noise_proxy":0.4549,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.5438,"dmlc_calibration_confidence":0.7536},"elapsed_s":0.187},"SNOLAB":{"name":"SNOLAB (Creighton Mine)","country":"Canada","lat":46.47,"lon":-81.19,"depth_mwe":6000,"rock_type":"norite","experiments":["DEAP-3600","NEWS-G","SuperCDMS","SNO+","PICO"],"muon_flux_m2s_sr":2.141e-05,"features":{"dmlc_seismic_noise_floor_nm":15.4507,"dmlc_muon_flux_rate_m2s":2.141e-05,"dmlc_neutron_background_rate":0.7592,"dmlc_radon_emanation_proxy":44.0,"dmlc_gravity_gradient_noise_ngal":0.005981,"dmlc_atmospheric_pressure_hpa":999.31,"dmlc_temperature_stability_mk":1.291,"dmlc_depth_mwe":6000,"dmlc_overburden_density_kg_m3":2900.0,"dmlc_nearest_seismic_station_km":0.3,"dmlc_cultural_noise_proxy":0.4056,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.6779,"dmlc_calibration_confidence":0.8738},"elapsed_s":0.203},"Kamioka":{"name":"Kamioka Observatory","country":"Japan","lat":36.43,"lon":137.31,"depth_mwe":2700,"rock_type":"gneiss","experiments":["Super-Kamiokande","XMASS","KamLAND","KamLAND-Zen"],"muon_flux_m2s_sr":0.08196157,"features":{"dmlc_seismic_noise_floor_nm":23.4431,"dmlc_muon_flux_rate_m2s":0.08196157,"dmlc_neutron_background_rate":2.3326,"dmlc_radon_emanation_proxy":96.25,"dmlc_gravity_gradient_noise_ngal":0.008605,"dmlc_atmospheric_pressure_hpa":1002.32,"dmlc_temperature_stability_mk":1.925,"dmlc_depth_mwe":2700,"dmlc_overburden_density_kg_m3":2750.0,"dmlc_nearest_seismic_station_km":81.0,"dmlc_cultural_noise_proxy":0.4691,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.5064,"dmlc_calibration_confidence":0.6125},"elapsed_s":0.216},"Jinping":{"name":"China Jinping Underground Laboratory","country":"China","lat":28.15,"lon":101.71,"depth_mwe":6720,"rock_type":"marble","experiments":["PandaX-II","PandaX-4T","CDEX"],"muon_flux_m2s_sr":3.54e-06,"features":{"dmlc_seismic_noise_floor_nm":12.5286,"dmlc_muon_flux_rate_m2s":3.54e-06,"dmlc_neutron_background_rate":0.9557,"dmlc_radon_emanation_proxy":87.9,"dmlc_gravity_gradient_noise_ngal":0.004532,"dmlc_atmospheric_pressure_hpa":1004.8,"dmlc_temperature_stability_mk":1.22,"dmlc_depth_mwe":6720,"dmlc_overburden_density_kg_m3":2710.0,"dmlc_nearest_seismic_station_km":73.0,"dmlc_cultural_noise_proxy":0.2478,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.6248,"dmlc_calibration_confidence":0.6349},"elapsed_s":0.179},"Boulby":{"name":"Boulby Underground Laboratory","country":"UK","lat":54.55,"lon":-0.82,"depth_mwe":2800,"rock_type":"halite","experiments":["DRIFT","LUX (prototype)","BUGS"],"muon_flux_m2s_sr":0.06383174,"features":{"dmlc_seismic_noise_floor_nm":16.3342,"dmlc_muon_flux_rate_m2s":0.06383174,"dmlc_neutron_background_rate":0.0923,"dmlc_radon_emanation_proxy":0.78,"dmlc_gravity_gradient_noise_ngal":0.004731,"dmlc_atmospheric_pressure_hpa":996.88,"dmlc_temperature_stability_mk":1.89,"dmlc_depth_mwe":2800,"dmlc_overburden_density_kg_m3":2170.0,"dmlc_nearest_seismic_station_km":1.1,"dmlc_cultural_noise_proxy":0.1735,"dmlc_annual_modulation_amplitude":0.052511,"dmlc_environmental_stability_score":0.7703,"dmlc_calibration_confidence":0.7287},"elapsed_s":0.197}},"summary":{"labs_analysed":6,"features_per_lab":14,"deepest_lab":"Jinping","quietest_seismic":"Jinping"}}