FASER Monte Carlo Samples

Overview

FASER MC samples are separated into different production epochs, representing particular detector configurations or releases. These samples can be found on EOS at CERN under /eos/experiment/faser/sim. The different output types are each in different subdirectories as shown here. Log files are also being saved for now.

Subdirectory Type Description
sim HITS Output of Geant4 simulation, starting point for digitization
ntp NTUP G4 hits and MC truth in the emulsion (for FASERnu reco)
rdo RDO Raw Data Object, output of digitization, starting point for MC reconstruction
rec xAOD Reconstructed data. Note both real data and simulated data will be found here
phy NTUP PhysicsNtuples - flat ntuples intended to make analyses easier to get started

To save disk space on the eos drive, some of the larger hits files have been moved to /eos/experiment/fasernu-data0/faser/sim. Wherever possible we have tried to avoid deleting samples.

Releases

Description of code releases can be found at FaserReleases. For more details, you can also look at the gitlab releases page.

MC22 Production

Samples produced to support physics analyses for 2022 data in Winter 2023. Samples are found in the /eos/experiment/faser/sim/mc22 directory. Each major generator has its own subdirectory, followed by run number and tag.

Latest Simulation Release: s0010 (19 Feb, 2023)

Latest Reconstruction Release: r0014 (27 Feb, 2023)

Note, there is no practical difference between simulation releases s0009 and s0008. There is a code speedup for the calorimeter digitization and a number of script improvements, but the samples should be interchangeable in content. Simulation release s0010 brings a fix for the buggy calorimeter digitization, and a workaround for the tracker digitization timing. For samples produced upstream of FASERnu, this timing fix in particular is important.

As there is now an ambiguity for different simulation releases being reconstructed by r0013 or later, the output directories are now being extended to show both the simulation and reconstruction tag, so for instance, s0010-r0013. In some cases, where there is no ambiguity, the simulation tag is not being written in the directory (although it is always in the output file name).

The reconstruction release r0014 is mainly an update to the physics ntuple format, although there is also a difference in the calorimeter energy scale applied to Monte Carlo samples that is relevant for the dark photon analysis.

Particle Gun Samples

These are diagnostic samples with single particles produced in a range of phase space through the detector. All samples (unless noted otherwise) are simulated with the optical filters inserted and with low gain settings for the calorimeter, which is the nominal physics configuration. All muon samples have high gain settings by default. These samples are found in the /eos/experiment/faser/sim/mc22/particle_gun subdirectory. Configuration files for producing these samples can be found on git. Note, this is a different package in git than for the MDC.

Samples starting in the decay volume

All muon samples are digitized with high gain settings (with filters) in the calorimeter. All other samples use low gain settings (with filters) unless specified otherwise.

Run Number Short Description Events Description
100000 MC22_PG_muon_logE 100k muons with log energy distribution from 10 to 5000 GeV
100001 MC22_PG_muon_30GeV 25k muons at 30 GeV
100002 MC22_PG_muon_100GeV 25k muons at 100 GeV
100003 MC22_PG_muon_300GeV 25k muons at 300 GeV
100004 MC22_PG_muon_1000GeV 25k muons at 1000 GeV
100005 MC22_PG_mupl_overlay 100k mu plus starting at z=0 generated with the overlay energy/angle spectrum
100006 MC22_PG_mumi_overlay 100k mu minus starting at z=0 generated with the overlay energy/angle spectrum
100020 MC22_PG_elec_logE 40k electrons with log energy distribution from 10 to 5000 GeV
100021 MC22_PG_elec_30GeV 20k electrons at 30 GeV
100022 MC22_PG_elec_100GeV 20k electrons at 100 GeV
100023 MC22_PG_elec_300GeV 20k electrons at 300 GeV
100024 MC22_PG_elec_1000GeV 10k electrons at 1000 GeV
100070 MC22_PG_kshort_logE 20k K Short Decay In Flight, produced at a range of z positions in decay volume

Samples starting upstream of FASERnu

These samples are produced starting in the concrete upstream of FASERnu. All muon samples are digitized with high gain settings (with filters) in the calorimeter. All other samples use low gain settings (with filters) unless specified otherwise. Samples starting upstream of FASERnu also have the emulsion hit ntuple produced as part of the processing. These ntuples can be found in the ntp directory, so for example: /eos/experiment/faser/sim/mc22/particle_gun/100010/ntp/s0008.

Run Number Short Description Events Description
100010 MC22_PG_muon_fasernu_10GeV 25k muons at 10 GeV
100011 MC22_PG_muon_fasernu_30GeV 25k muons at 30 GeV
100012 MC22_PG_muon_fasernu_100GeV 25k muons at 100 GeV
100013 MC22_PG_muon_fasernu_300GeV 25k muons at 300 GeV
100014 MC22_PG_muon_fasernu_1000GeV 25k muons at 1000 GeV
100015 MC22_PG_muon_fasernu_logE 100k muons with log energy distribution from 10 to 5000 GeV
100040 MC22_PG_muon_fasernu_narrow_logE 1M Produced in a narrow generation range (2.5 cm) producing high density muons in FaserNu
100041 MC22_PG_mumi_fasernu_flukaE 5M mu minus produced with Fluka energy spectrum, low-gain filter-in calo settings
100042 MC22_PG_mupl_fasernu_flukaE 5M mu plus produced with Fluka energy spectrum, low-gain filter-in calo settings
100043 MC22_PG_mumi_fasernu_5mrad_flukaE 5M mu minus produced with Fluka energy spectrum, low-gain filter-in calo settings, wider 5mrad angular divergence
100044 MC22_PG_mupl_fasernu_5mrad_flukaE 5M mu plus produced with Fluka energy spectrum, low-gain filter-in calo settings, wider 5mrad angular divergence

Samples starting in FASERnu

These samples are intended to mimic charged-current interactions and otherwise provide samples for comparison to neutrino events. These samples are generated uniformly between -2990mm and -1951 in FASER z coordinate. These samples all use low gain settings (with filters) in the calorimeter, and the FASERnu hits ntuple is produced. All of these samples were produced with a gaussian 1 mRad polar angle distribution.

Run Number Short Description Events Description
100030 MC22_PG_pion_in_fasernu_10GeV 20k pions at 10 GeV
100031 MC22_PG_pion_in_fasernu_30GeV 20k pions at 30 GeV
100032 MC22_PG_pion_in_fasernu_100GeV 20k pions at 100 GeV
100033 MC22_PG_pion_in_fasernu_300GeV 20k pions at 300 GeV
100034 MC22_PG_pion_in_fasernu_1000GeV 10k pions at 1 TeV
100050 MC22_PG_muon_in_fasernu_10GeV 20k muons at 10 GeV
100051 MC22_PG_muon_in_fasernu_30GeV 20k muons at 30 GeV
100052 MC22_PG_muon_in_fasernu_100GeV 20k muons at 100 GeV
100053 MC22_PG_muon_in_fasernu_300GeV 20k muons at 300 GeV
100054 MC22_PG_muon_in_fasernu_1000GeV 10k muons at 1 TeV
100060 MC22_PG_neut_in_fasernu_logE 80k neutrons (and anti-neutrons) with a log energy spectrum from 10 GeV to 500 GeV
100061 MC22_PG_kshort_in_fasernu_logE 80k K-short (and anti-particle) with a log energy spectrum from 10 GeV to 500 GeV
100062 MC22_PG_klong_in_fasernu_logE 80k K-long (and anti-particle) with a log energy spectrum from 10 GeV to 500 GeV
100063 MC22_PG_kshort_plus_m2400_xin 100k K-short from mu+, starting at -2.4m (near end of FASERnu), Xin spectrum
100064 MC22_PG_kshort_minus_m2400_xin 100k K-short from mu-, starting at -2.4m (near end of FASERnu), Xin spectrum
100065 MC22_PG_klong_plus_m2400_xin 100k K-long from mu+, starting at -2.4m (near end of FASERnu), Xin spectrum
100066 MC22_PG_klong_minus_m2400_xin 100k K-long from mu-, starting at -2.4m (near end of FASERnu), Xin spectrum

100067 MC22_PG_kshort_in_fasernu_xin 200k K-short in FASERnu, using 2D energy-angle sampling from Xin
100068 MC22_PG_klong_in_fasernu_xin 200k K-long in FASERnu, using 2D energy-angle sampling from Xin
100069 MC22_PG_neut_in_fasernu_xin 200k neutrons in FASERnu, using 2D energy-angle sampling from Xin
100074 MC22_PG_lambda_in_fasernu_xin 200k Lambda in FASERnu, using 2D energy-angle sampling from Xin
100075 MC22_PG_aneut_in_fasernu_xin 200k anti-neutrino in FASERnu, using 2D energy-angle sampling from Xin
100076 MC22_PG_alambda_in_fasernu_xin 200k anti-Lambda in FASERnu, using 2D energy-angle sampling from Xin

Other samples

To test the energy loss in the rest of FASER, these samples are simulated just upstream of the third tracking station.

Run Number Short Description Events Description
100025 MC22_PG_elec_st3_100GeV 10k electrons produced at +2m with 100 GeV

To test conversions, these samples are produced in the veto counter material

Run Number Short Description Events Description
100071 MC22_PG_gamma_veto_logE 5k photons produced around -1.65m with log energy from 5-100 GeV
100072 MC22_PG_gamma_veto_histE 50k photons produced around -1.65m with conversion energy spectrum
100073 MC22_PG_gamma_histE 50k photons produced around -0.5m (in decay volume) with conversion energy spectrum

To test backgrounds missing the veto counter, these were produced with FLUKA energy spectrum at z=3.75m with high incidence angle.

Run Number Short Description Events Description
100080 MC22_PG_mupl_offset_fluka 200k mu+ at high incidence angle to miss veto
100081 MC22_PG_mumi_offset_fluka 200k mu- at high incidence angle to miss veto
100082 MC22_PG_mupl_offset_15mra_fluka 200k mu+ with reduced angle from 15-30 mRad
100083 MC22_PG_mumi_offset_15mrad_fluka 200k mu- with reduced angle from 15-30 mRad

Foresee Dark Photon Samples

These are dark photon signal samples produced in the FASER decay volume. All samples (unless otherwise noted) are simulated with the optical filters inserted and with low gain settings for the calorimeter, which is the nominal physics configuration. These samples are found in the /eos/experiment/faser/sim/mc22/foresee subdirectory. Configuration files for producing these samples can be found on git. Cross section information can be found at /eos/experiment/faser/gen/MC22/DarkPhoton/DarkPhotonGrid13p6_65mm/cross-sections.json.

The first three samples below are equivalent to the MDC samples.

Run Number Short Description Events Description
110033 MC22_FS_Aee_010MeV_1Em5 20k 10 MeV dark photon to e+e-, epsilon = 1E-5
110038 MC22_FS_Aee_100MeV_1Em5 20k 100 MeV dark photon to e+e-, epsilon = 1E-5
110051 MC22_FS_Aee_010MeV_1Em4 20k 10 MeV dark photon to e+e-, epsilon = 1E-4
 
110026 MC22_FS_Aee_010MeV_5Em6 20k 10 MeV dark photon to e+e-, epsilon = 5E-6
110040 MC22_FS_Aee_010MeV_3Em5 20k 10 MeV dark photon to e+e-, epsilon = 3E-5
110047 MC22_FS_Aee_010MeV_5Em5 20k 10 MeV dark photon to e+e-, epsilon = 5E-5
110054 MC22_FS_Aee_010MeV_3Em4 20k 10 MeV dark photon to e+e-, epsilon = 3E-4
 
110058 MC22_FS_Aee_013MeV_1Em4 5k 13 MeV dark photon to e+e-, epsilon = 1E-4
110056 MC22_FS_Aee_013MeV_3Em4 5k 13 MeV dark photon to e+e-, epsilon = 3E-4
 
110060 MC22_FS_Aee_016MeV_5Em5 5k 16 MeV dark photon to e+e-, epsilon = 5E-5
110059 MC22_FS_Aee_016MeV_1Em4 5k 16 MeV dark photon to e+e-, epsilon = 1E-4
110057 MC22_FS_Aee_016MeV_3Em4 5k 16 MeV dark photon to e+e-, epsilon = 3E-4
 
110022 MC22_FS_Aee_025MeV_1Em6 20k 25 MeV dark photon to e+e-, epsilon = 1E-6
110027 MC22_FS_Aee_025MeV_5Em6 20k 25 MeV dark photon to e+e-, epsilon = 5E-6
110034 MC22_FS_Aee_025MeV_1Em5 20k 25 MeV dark photon to e+e-, epsilon = 1E-5
110041 MC22_FS_Aee_025MeV_3Em5 20k 25 MeV dark photon to e+e-, epsilon = 3E-5
110048 MC22_FS_Aee_025MeV_5Em5 20k 25 MeV dark photon to e+e-, epsilon = 5E-5
110052 MC22_FS_Aee_025MeV_1Em4 20k 25 MeV dark photon to e+e-, epsilon = 1E-4
110055 MC22_FS_Aee_025MeV_3Em4 20k 25 MeV dark photon to e+e-, epsilon = 3E-4
 
110063 MC22_FS_Aee_032MeV_3Em5 5k 32 MeV dark photon to e+e-, epsilon = 3E-5
110061 MC22_FS_Aee_032MeV_5Em5 5k 32 MeV dark photon to e+e-, epsilon = 5E-5
 
110064 MC22_FS_Aee_036MeV_3Em5 5k 36 MeV dark photon to e+e-, epsilon = 3E-5
110062 MC22_FS_Aee_036MeV_5Em5 5k 36 MeV dark photon to e+e-, epsilon = 5E-5
 
110023 MC22_FS_Aee_050MeV_1Em6 20k 50 MeV dark photon to e+e-, epsilon = 1E-6
110028 MC22_FS_Aee_050MeV_5Em6 20k 50 MeV dark photon to e+e-, epsilon = 5E-6
110035 MC22_FS_Aee_050MeV_1Em5 20k 50 MeV dark photon to e+e-, epsilon = 1E-5
110073 MC22_FS_Aee_050MeV_2Em5 5k 50 MeV dark photon to e+e-, epsilon = 2E-5
110042 MC22_FS_Aee_050MeV_3Em5 20k 50 MeV dark photon to e+e-, epsilon = 3E-5
110049 MC22_FS_Aee_050MeV_5Em5 20k 50 MeV dark photon to e+e-, epsilon = 5E-5
110053 MC22_FS_Aee_050MeV_1Em4 20k 50 MeV dark photon to e+e-, epsilon = 1E-4
 
110024 MC22_FS_Aee_063MeV_1Em6 20k 63 MeV dark photon to e+e-, epsilon = 1E-6
110029 MC22_FS_Aee_063MeV_5Em6 20k 63 MeV dark photon to e+e-, epsilon = 5E-6
110036 MC22_FS_Aee_063MeV_1Em5 20k 63 MeV dark photon to e+e-, epsilon = 1E-5
110074 MC22_FS_Aee_063MeV_2Em5 5k 63 MeV dark photon to e+e-, epsilon = 2E-5
110043 MC22_FS_Aee_063MeV_3Em5 20k 63 MeV dark photon to e+e-, epsilon = 3E-5
110050 MC22_FS_Aee_063MeV_5Em5 20k 63 MeV dark photon to e+e-, epsilon = 5E-5
 
110025 MC22_FS_Aee_079MeV_1Em6 20k 79 MeV dark photon to e+e-, epsilon = 1E-6
110030 MC22_FS_Aee_079MeV_5Em6 20k 79 MeV dark photon to e+e-, epsilon = 5E-6
110037 MC22_FS_Aee_079MeV_1Em5 20k 79 MeV dark photon to e+e-, epsilon = 1E-5
110075 MC22_FS_Aee_079MeV_2Em5 5k 79 MeV dark photon to e+e-, epsilon = 2E-5
110044 MC22_FS_Aee_079MeV_3Em5 20k 79 MeV dark photon to e+e-, epsilon = 3E-5
 
110031 MC22_FS_Aee_100MeV_5Em6 20k 100 MeV dark photon to e+e-, epsilon = 5E-6
110045 MC22_FS_Aee_100MeV_3Em5 20k 100 MeV dark photon to e+e-, epsilon = 3E-5
110032 MC22_FS_Aee_112MeV_5Em6 20k 112 MeV dark photon to e+e-, epsilon = 5E-6
110039 MC22_FS_Aee_112MeV_1Em5 20k 112 MeV dark photon to e+e-, epsilon = 1E-5
110046 MC22_FS_Aee_112MeV_3Em5 20k 112 MeV dark photon to e+e-, epsilon = 3E-5
 
110090 MC22_FS_Aee_010MeV_15Em5 5k 10 MeV dark photon to e+e-, epsilon = 1.5E-4
110091 MC22_FS_Aee_013MeV_15Em5 5k 13 MeV dark photon to e+e-, epsilon = 1.5E-4
110092 MC22_FS_Aee_016MeV_15Em5 5k 16 MeV dark photon to e+e-, epsilon = 1.5E-4
110093 MC22_FS_Aee_025MeV_15Em5 5k 25 MeV dark photon to e+e-, epsilon = 1.5E-4

Foresee ALPs Samples

These are axion-like particle signal samples produced in the FASER decay volume. All samples (unless otherwise noted) are simulated with the optical filters inserted and with low gain settings for the calorimeter, which is the nominal physics configuration. These samples are found in the /eos/experiment/faser/sim/mc22/foresee subdirectory. Configuration files for producing these samples can be found on git. These are divided between photon coupling samples (where g is the coupling for agg) and W-dominated samples (where g is aWW).

Run Number Short Description Events Description
110100 MC22_FS_Alp_060MeV_7Em5 5k 60 MeV ALPs to gamma-gamma, g_agg = 7E-5
110101 MC22_FS_Alp_060MeV_15Em5 5k 60 MeV ALPs to gamma-gamma, g_agg = 1.5E-4
110102 MC22_FS_Alp_060MeV_3Em4 5k 60 MeV ALPs to gamma-gamma, g_agg = 3E-4
 
110200 MC22_FS_Alpw_200MeV_1Em5 5k 200 MeV ALPs to gamma-gamma, g_aww = 1E-5
110201 MC22_FS_Alpw_200MeV_4Em5 5k 200 MeV ALPs to gamma-gamma, g_aww = 4E-5
110202 MC22_FS_Alpw_200MeV_2Em4 5k 200 MeV ALPs to gamma-gamma, g_aww = 2E-4

Genie Neutrino Samples

These are neutrino signal samples produced by Genie. All samples (unless otherwise noted) are simulated with the optical filters inserted and with low gain settings for the calorimeter, which is the nominal physics configuration. These samples are found in the /eos/experiment/faser/sim/mc22/genie subdirectory. Configuration files for producing these samples can be found on git.

Run Number Short Description Events Description
200003 MC22_Genie_all_600invfb_v1 ~422k 600 fb-1 of neutrino interactions with all neutrino species
200004 MC22_Genie_timingTrackOnly_20invab 2099 20 ab-1 of neutrino interactions starting downstream of the decay volume
200005 MC22_Genie_timingTrackOnly_300invab 30653 300 ab-1 of neutrino interactions starting downstream of the decay volume

Fluka Muon Samples

These samples come from a FLUKA simulation that has been resampled and scattered through roughly 100m of rock before entering FASER. There are two variants of this resampling. The older one (also used in the MDC) propagated the muons to -3.75 m, missing the concrete in the trench. Newer samples have been made propagating the muons to -4.99 m, which includes all of the concrete in the trench in the FASER G4 geometry.

Note that these samples contain weighted events, and that the event weight stored in the HepMC::GenEvent or xAOD::TruthEvent must be applied to obtain physical distributions. The physics ntuple contains this FLUKA weight.

These samples are found in the /eos/experiment/faser/sim/mc22/fluka subdirectory. Configuration files for producing these samples can be found on git.

Run Number Short Description Events Description
210001 MC22_Fluka_unit30_Nm_71m_m3750_v3 200k Test sample with old four-vectors
210002 MC22_Fluka_unit30_Pm_71m_m3750_v3 200k Test sample with old four-vectors
210003 MC22_Fluka_unit30_Nm_71m_m4990_v3 1352.2k Muons start too far upstream, do not use!
210004 MC22_Fluka_unit30_Pm_71m_m4990_v3 796.3k Muons start too far upstream, do not use!
210005 MC22_Fluka_unit30_Nm_71m_m3990_v3 1352.2k mu- starting in concrete upstream of FASERnu
210006 MC22_Fluka_unit30_Pm_71m_m3990_v3 796.3k mu+ starting in concrete upstream of FASERnu

Mock Data Challenge

MDC samples are not intended to be used for physics results. These samples were produced with a "good enough" code release intended to start FASER physics analysis efforts. For each data type, these will be found in the /eos/experiment/faser/sim/mdc subdirectory. Each major generator has its own subdirectory, followed by the run number and data type. The reconstructed data is found in the rec subdirectory, followed by the reconstruction tag version.

Latest Simulation Release: s0007 (30 Jul, 2022)

Latest Reconstruction Release: r0009 (4 Aug, 2022)

Particle Gun Samples

These are diagnostic samples with single particles produced in a range of phase space through the detector. Particles typically start in the decay volume (downstream of the Veto counters) generated uniformly over a circle of radius 10cm with a 5 mRad gaussian angular divergence. One muons sample starts in the rock before the emulsion detector, and a few samples have a narrower range of spatial production and angular divergence. These samples are found in the /eos/experiment/faser/sim/mdc/particle_gun subdirectory. Configuration files for producing these samples can be found on git (but be carful to select the proper release). Instruction for producing samples can be found on the MdcProduction page.

Samples starting in the decay volume

Latest Release: s0007_r0009

Run Number Short Description Events Description
101101 MDC_PG_elec_logE 20k electrons with log energy distribution from 10 to 5000 GeV
101103 MDC_PG_elec_100GeV 20k electrons at 100 GeV
101104 MDC_PG_elec_100GeV 20k electrons at 100 GeV, narrower generation parameters (2 cm radius, 1 mRad divergence)
101105 MDC_PG_elec_50GeV 20k electrons at 50 GeV
101106 MDC_PG_elec_200GeV 20k electrons at 200 GeV
101301 MDC_PG_muon_logE 20k muons with a log energy distribution from 10 to 5000 GeV, start in decay volume, high calo gain from s0005
101303 MDC_PG_muon_100GeV 20k muons at 100 GeV, start in decay volume, high calo gain from s0005
101304 MDC_PG_muon_100GeV 20k muons at 100 GeV, start in decay volume, narrower generation parameters (2 cm radius, 1 mRad divergence), high calo gain from s0005
102201 MDC_PG_gam_100GeV 20k photons at 100 GeV
121101 MDC_PG_pion_100GeV 20k pions at 100 GeV starting in the decay volume

Samples starting upstream of FASERnu

Latest Release: r0010_r0010

Run Number Short Description Events Description
101302 MDC_PG_muon_fasernu_logE 50k muons with a log energy distribution from 10 to 5000 GeV, start in concrete before FaserNu
101305 MDC_PG_muon_fasernu_higain_logE 50k like 101302 but with high gain settings for calorimeter
101306 MDC_PG_muon_fasernu_logE 4M Like 101301, but narrow generation range (2.5 mm) producing high density muons in FaserNu
101307 MDC_PG_muon_fasernu_logE 4M Like 101306, but correct narrow generation range (2.5 cm) producing high density muons in FaserNu
101308 MDC_PG_muon_fasernu_10GeV 20k Same parameters as 101307 but fixed incident energy
101309 MDC_PG_muon_fasernu_30GeV 20k Same parameters as 101307 but fixed incident energy
101310 MDC_PG_muon_fasernu_100GeV 20k Same parameters as 101307 but fixed incident energy
101311 MDC_PG_muon_fasernu_300GeV 20k Same parameters as 101307 but fixed incident energy
101312 MDC_PG_muon_fasernu_1000GeV 20k Same parameters as 101307 but fixed incident energy
121102 MDC_PG_pion_fasernu_10GeV 20k Same parameters as 101307 but pions at fixed incident energy
121103 MDC_PG_pion_fasernu_30GeV 20k Same parameters as 101307 but pions at fixed incident energy
121104 MDC_PG_pion_fasernu_100GeV 20k Same parameters as 101307 but pions at fixed incident energy
121105 MDC_PG_pion_fasernu_300GeV 20k Same parameters as 101307 but pions at fixed incident energy
121106 MDC_PG_pion_fasernu_1000GeV 10k Same parameters as 101307 but pions at fixed incident energy

Foresee Signal Samples

These are signal samples with production kinematics provided by Foresee. Generated samples are now produced and written as hepmc files (including parent decay in the FASER decay volume) and then simulated by Geant4. These samples are found in the /eos/experiment/faser/sim/mdc/foresee directory. Note the s0005_r0008 samples had no in-time tracker hits and have been removed.

Latest Release: s0007_r0009

Run Number Short Description Events Description
110001 MDC_FS_Aee_100MeV_1Em5 20k 100 MeV dark photon to e+e-, epsilon = 1E-5
110002 MDC_FS_Aee_10MeV_1Em5 20k 10 MeV dark photon to e+e-, epsilon = 1E-5
110003 MDC_FS_Aee_10MeV_1Em4 20k 10 MeV dark photon to e+e-, epsilon = 1E-4
110004 MDC_FS_Amm_316MeV_2Em6 20k 316 MeV dark photon to mu+mu-, epsilon = 2E-6
110005 MDC_FS_Alp_10MeV_1Em4 20k 10 MeV ALP to photons, epsilon = 1E-4
110006 MDC_FS_Alp_10MeV_1Em2 20k 10 MeV ALP to photons, epsilon = 1E-2
110007 MDC_FS_Alp_100MeV_1Em4 20k 100 MeV ALP to photons, epsilon = 1E-4

The following samples were generated as a test with release s0006_r0008 to verify a fix to shift the Foresee production volume into the correct location in the FASER coordinate system. A different run number was used from the previous samples to avoid ambiguity in the eos directories. With the s0007, this fix has been incorporated into the runs listed above.

Run Number Short Description Events Description
110011 MDC_FS_Aee_100MeV_1Em5_shift 20k 100 MeV dark photon to e+e-, epsilon = 1E-5
110012 MDC_FS_Aee_10MeV_1Em5_shift 20k 10 MeV dark photon to e+e-, epsilon = 1E-5
110013 MDC_FS_Aee_10MeV_1Em4_shift 20k 10 MeV dark photon to e+e-, epsilon = 1E-4
110014 MDC_FS_Amm_316MeV_2Em6_shift 20k 316 MeV dark photon to mu+mu-, epsilon = 2E-6
110015 MDC_FS_Alp_10MeV_1Em4_shift 20k 10 MeV ALP to photons, epsilon = 1E-4
110016 MDC_FS_Alp_10MeV_1Em2_shift 20k 10 MeV ALP to photons, epsilon = 1E-2
110017 MDC_FS_Alp_100MeV_1Em4_shift 20k 100 MeV ALP to photons, epsilon = 1E-4

Genie Neutrino Samples

These are neutrino samples generated by Genie with primary interactions in the FASERNu emulsion stack. These samples are found in the /eos/experiment/faser/sim/mdc/genie directory.

Latest Release: r0010

Run Number Short Description Events Description
200001 MDC_Genie_all_150invfb_v1 ~110k 150 fb-1 of neutrino interactions with all neutrino species, obsolete
200002 MDC_Genie_tauCC_1500invfb_v1 387 Tau neutrino CC interactions corresponding to 10x Run3 luminosity
200003 MDC_Genie_all_600invfb_v1 ~422k 600 fb-1 of neutrino interactions with all neutrino species, includes events in 200001

FLUKA Muon Samples

Accelerator-produced muons as predicted by FLUKA. These samples are produced by taking the 4-vectors in the original FLUKA output and randomly smearing them for transport through ~100m of rock before the detector. This smearing is done using the Bethe-Bloch approximation and small-angle scattering approximation. Each initial 4-vector is sampled 10 times. These samples are found in the /eos/experiment/faser/sim/mdc/fluka directory.

Note that these samples contain weighted events, and that the event weight stored in the HepMC::GenEvent or xAOD::TruthEvent must be applied to obtain physical distributions.

Latest Release: s0007_r0009

Run Number Short Description Events Description
210001 MDC_Fluka_unit30_Nm_71m_m3750_v3 1.35M mu- FLUKA events, 50k per file
210002 MDC_Fluka_unit30_Pm_71m_m3750_v3 800k mu+ FLUKA events, 50k per file

2021 Test Beam

These samples are produced using the test beam geometry with a particle gun starting at z=-1 m in front of the tracker plane. The initial samples were produced with a dev release, which is similar to s0007 and r0009 with some updates to accommodate the test beam geometry. Proper tagged versions will be produced once these are validated. These samples can be found in the /eos/experiment/faser/sim/tb21 subdirectory.

Run Number Short Description Events Description
000100 FaserMC-TB_PG_muon_100GeV 40k 100 GeV muons, 10cm radius
000200 FaserMC-TB_PG_elec_100GeV 20k 100 GeV electrons, 10cm radius
000201 FaserMC-TB_PG_elec_50GeV 20k 50 GeV electrons, 10cm radius
000202 FaserMC-TB_PG_elec_30GeV 20k 30 GeV electrons, 10cm radius
000203 FaserMC-TB_PG_elec_200GeV 20k 200 GeV electrons, 10cm radius

-- EricTorrence - 2022-05-18

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Topic revision: r47 - 2023-03-23 - EricTorrence
 
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