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Add o2-sim-geometry-doctor, a geometry against field audit #15683

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Add o2-sim-geometry-doctor, a geometry against field audit #15683

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10 changes: 10 additions & 0 deletions run/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -108,6 +108,16 @@ o2_add_executable(g4-determine-unknown-pdg-properties
SOURCES g4DetermineUnknownPdgProperties.cxx
PUBLIC_LINK_LIBRARIES O2::O2TrivialMC MC::Geant4 MC::Geant4VMC O2::SimConfig)

# Reads a geometry file and a field and reports where the two do not fit together.
# It needs neither the simulation engines nor any detector code -- the medium flags
# it reasons about are GSTMED parameters stored in the geometry file itself -- so it
# deliberately does not link internal::allsim.
o2_add_executable(geometry-doctor
COMPONENT_NAME sim
SOURCES o2sim_geometry_doctor.cxx
PUBLIC_LINK_LIBRARIES O2::Field ROOT::Geom Boost::program_options
nlohmann_json::nlohmann_json)

o2_add_executable(mctracks-proxy
COMPONENT_NAME sim
SOURCES o2sim_mctracks_proxy.cxx
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15 changes: 15 additions & 0 deletions run/geometry-doctor-anchors.json
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@@ -0,0 +1,15 @@
{
"comment": "Volumes of the ALICE Run 3 geometry whose relation to the field is known independently of this tool, from the geometry of the LHC machine elements around the RB24 beam pipe. Pass this file to o2-sim-geometry-doctor --verify-anchors to check a run against them. The five copper tubes sit 14 to 63 cm clear of the machine band in z and must come out field-free; RB243 and RB243A are assemblies, so they carry no material and nothing can be flagged on them; caveRB24 must NOT come out field-free, because what its daughters leave over is a sliver of cave air between an oval beam pipe and a circular field cylinder that carries more than 13 kG; and RB24B1BellowM is placed in the solenoid fringe while carrying a field-free medium, which is what the reverse audit exists to find.",
"anchors": [
{"volume": "voRB242CuTube", "expect": "OUT", "placements": 2},
{"volume": "voRB243CuTube", "expect": "OUT", "placements": 2},
{"volume": "voRB24CuTubeF", "expect": "OUT", "placements": 7},
{"volume": "voRB24cCuTube", "expect": "OUT", "placements": 1},
{"volume": "voRB24cCuTubeM", "expect": "OUT", "placements": 1},
{"volume": "RB243", "expect": "ASSEMBLY", "placements": 1},
{"volume": "RB243A", "expect": "ASSEMBLY", "placements": 2},
{"volume": "caveRB24", "expect": "NOT_OUT", "min_max_B_kG": 13.0},
{"volume": "voRB24CuTubeM", "expect": "IN", "min_max_B_kG": 4.0},
{"volume": "RB24B1BellowM", "expect": "REVERSE_AUDIT_FLAGGED", "min_max_B_kG": 4.0}
]
}
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