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amorschsawenzel
amorsch
authored and
sawenzel
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Support for FLUKA VMC backend in O2
This commit provides support for FLUKA in O2. FLUKA compilation is optional for the moment. This backend can be selected via: ``` o2-sim -e TFluka ... ```
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9 files changed

+150
-10
lines changed

9 files changed

+150
-10
lines changed

‎DataFormats/simulation/src/Stack.cxx‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -77,8 +77,8 @@ Stack::Stack(Int_t size)
7777
mIsG4Like(false)
7878
{
7979
auto vmc = TVirtualMC::GetMC();
80-
if (vmc && strcmp(vmc->GetName(), "TGeant4") == 0) {
81-
mIsG4Like = true;
80+
if (vmc) {
81+
mIsG4Like = !(vmc->SecondariesAreOrdered());
8282
}
8383

8484
auto& param = o2::sim::StackParam::Instance();

‎Detectors/gconfig/CMakeLists.txt‎

Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -18,6 +18,16 @@ o2_add_library(G4Setup
1818
PUBLIC_LINK_LIBRARIES MC::Geant4VMC MC::Geant4 FairRoot::Base O2::SimulationDataFormat O2::Generators ROOT::EGPythia6
1919
)
2020

21+
if (FlukaVMC_FOUND)
22+
message(STATUS "BUILDING WITH FLUKA")
23+
o2_add_library(FLUKASetup
24+
SOURCES src/FlukaConfig.cxx
25+
PUBLIC_LINK_LIBRARIES MC::FlukaVMC FairRoot::Base O2::SimulationDataFormat O2::Generators ROOT::EGPythia6
26+
)
27+
else()
28+
message(STATUS "BUILDING WITHOUT FLUKA")
29+
endif (FlukaVMC_FOUND)
30+
2131
o2_add_library(SimSetup
2232
SOURCES src/GlobalProcessCutSimParam.cxx src/SimSetup.cxx src/SetCuts.cxx
2333
PUBLIC_LINK_LIBRARIES O2::CommonUtils O2::DetectorsBase
@@ -49,3 +59,5 @@ o2_add_test_root_macro(g3Config.C
4959
o2_add_test_root_macro(g4Config.C
5060
PUBLIC_LINK_LIBRARIES O2::SimSetup
5161
LABELS simsetup)
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63+
o2_data_file(COPY data DESTINATION Detectors/gconfig/)

‎Detectors/gconfig/data/coreFlukaVmc.inp‎

Lines changed: 29 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,29 @@
1+
GLOBAL 50000. 4.0
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DEFAULTS NEW-DEFA
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OPEN 1. OLD
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random.dat
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GEOBEGIN COMBINAT
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GEOEND
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*
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*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+
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*
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EVENTYPE 1.0
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BEAM 7000.0 MUON-
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MGNFIELD 10.0 0.001
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SOURCE
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*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+
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USERDUMP 200. 37.0 -2.0 1.0 TRAKFILE
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START 42000.99999999.0 2.0
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STOP
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‎Detectors/gconfig/src/FlukaConfig.cxx‎

Lines changed: 70 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,70 @@
1+
// Copyright CERN and copyright holders of ALICE O2. This software is
2+
// distributed under the terms of the GNU General Public License v3 (GPL
3+
// Version 3), copied verbatim in the file "COPYING".
4+
//
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// See http://alice-o2.web.cern.ch/license for full licensing information.
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//
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// In applying this license CERN does not waive the privileges and immunities
8+
// granted to it by virtue of its status as an Intergovernmental Organization
9+
// or submit itself to any jurisdiction.
10+
11+
#include "FairRunSim.h"
12+
#include "TFluka.h"
13+
#include "SimulationDataFormat/Stack.h"
14+
#include "SimulationDataFormat/StackParam.h"
15+
#include <iostream>
16+
#include "FairLogger.h"
17+
#include "FairModule.h"
18+
#include "Generators/DecayerPythia8.h"
19+
#include "../commonConfig.C"
20+
21+
// these are used in commonConfig.C
22+
using o2::eventgen::DecayerPythia8;
23+
24+
namespace o2
25+
{
26+
namespace flukaconfig
27+
{
28+
29+
void linkFlukaFiles()
30+
{
31+
// Link here some special Fluka files needed
32+
gSystem->Exec("ln -s $FLUKADATA/neuxsc.bin .");
33+
gSystem->Exec("ln -s $FLUKADATA/elasct.bin .");
34+
gSystem->Exec("ln -s $FLUKADATA/gxsect.bin .");
35+
gSystem->Exec("ln -s $FLUKADATA/nuclear.bin .");
36+
gSystem->Exec("ln -s $FLUKADATA/sigmapi.bin .");
37+
gSystem->Exec("ln -s $FLUKADATA/brems_fin.bin .");
38+
gSystem->Exec("ln -s $FLUKADATA/cohff.bin .");
39+
gSystem->Exec("ln -s $FLUKADATA/fluodt.dat .");
40+
gSystem->Exec("ln -s $FLUKADATA/random.dat .");
41+
// Copy the random seed
42+
gSystem->Exec("cp $FLUKADATA/random.dat old.seed");
43+
// Give some meaningfull name to the output
44+
gSystem->Exec("ln -s fluka.out fort.11");
45+
gSystem->Exec("ln -s fluka.err fort.15");
46+
gSystem->Exec("ln -fs $ALICE_ROOT/TFluka/macro/FlukaConfig.C Config.C");
47+
gSystem->Exec("ln -fs $O2_ROOT/share/Detectors/gconfig/data/coreFlukaVmc.inp .");
48+
}
49+
50+
void Config()
51+
{
52+
linkFlukaFiles();
53+
FairRunSim* run = FairRunSim::Instance();
54+
TString* gModel = run->GetGeoModel();
55+
TFluka* fluka = new TFluka("C++ Interface to Fluka", 0);
56+
stackSetup(fluka, run);
57+
58+
// setup decayer
59+
decayerSetup(fluka);
60+
61+
// ******* FLUKA specific configuration for simulated Runs *******
62+
}
63+
64+
void FlukaConfig()
65+
{
66+
LOG(INFO) << "Setting up FLUKA sim from library code";
67+
Config();
68+
}
69+
} // namespace flukaconfig
70+
} // namespace o2

‎Detectors/gconfig/src/SimSetup.cxx‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -53,6 +53,8 @@ void SimSetup::setup(const char* engine)
5353
setupFromPlugin("libO2G3Setup", "_ZN2o28g3config8G3ConfigEv");
5454
} else if (strcmp(engine, "TGeant4") == 0) {
5555
setupFromPlugin("libO2G4Setup", "_ZN2o28g4config8G4ConfigEv");
56+
} else if (strcmp(engine, "TFluka") == 0) {
57+
setupFromPlugin("libO2FLUKASetup", "_ZN2o211flukaconfig11FlukaConfigEv");
5658
} else {
5759
LOG(FATAL) << "Unsupported engine " << engine;
5860
}

‎dependencies/FindFlukaVMC.cmake‎

Lines changed: 29 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,29 @@
1+
# Copyright CERN and copyright holders of ALICE O2. This software is distributed
2+
# under the terms of the GNU General Public License v3 (GPL Version 3), copied
3+
# verbatim in the file "COPYING".
4+
#
5+
# See http://alice-o2.web.cern.ch/license for full licensing information.
6+
#
7+
# In applying this license CERN does not waive the privileges and immunities
8+
# granted to it by virtue of its status as an Intergovernmental Organization or
9+
# submit itself to any jurisdiction.
10+
11+
# use the GEANT4_VMCConfig.cmake provided by the Geant4VMC installation but
12+
# amend the target geant4vmc with the include directories
13+
14+
find_package(FlukaVMC NO_MODULE)
15+
if(NOT FlukaVMC_FOUND)
16+
return()
17+
endif()
18+
19+
set_target_properties(flukavmc
20+
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
21+
"${FlukaVMC_INCLUDE_DIRS}"
22+
INTERFACE_LINK_DIRECTORIES
23+
$<TARGET_FILE_DIR:flukavmc>)
24+
25+
# Promote the imported target to global visibility
26+
# (so we can alias it)
27+
set_target_properties(flukavmc PROPERTIES IMPORTED_GLOBAL TRUE)
28+
29+
add_library(MC::FlukaVMC ALIAS flukavmc)

‎dependencies/O2FindDependenciesFromAliBuild.cmake‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -154,6 +154,7 @@ function(o2_find_dependencies_from_alibuild)
154154
protected_set_root(Geant3 GEANT3)
155155
protected_set_root(Geant4 GEANT4)
156156
protected_set_root(Geant4VMC GEANT4_VMC)
157+
protected_set_root(FlukaVMC FLUKA_VMC)
157158
protected_set_root(VGM vgm)
158159
protected_set_root(HepMC HepMC3)
159160

‎dependencies/O2SimulationDependencies.cmake‎

Lines changed: 3 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -63,6 +63,9 @@ set_package_properties(Geant4
6363
find_package(Geant4VMC MODULE)
6464
set_package_properties(Geant4VMC PROPERTIES TYPE ${mcPackageRequirement})
6565

66+
find_package(FlukaVMC MODULE)
67+
set_package_properties(FlukaVMC PROPERTIES TYPE OPTIONAL)
68+
6669
find_package(VGM MODULE)
6770
set_package_properties(VGM PROPERTIES TYPE ${mcPackageRequirement})
6871

‎run/O2SimDevice.h‎

Lines changed: 2 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -188,14 +188,8 @@ class O2SimDevice final : public FairMQDevice
188188
<< "part " << info.part << "/" << info.nparts;
189189
gRandom->SetSeed(chunk->mSubEventInfo.seed);
190190

191-
auto& conf = o2::conf::SimConfig::Instance();
192-
if (strcmp(conf.getMCEngine().c_str(), "TGeant4") == 0) {
193-
mVMC->ProcessEvent();
194-
} else {
195-
// for Geant3 at least calling ProcessEvent is not enough
196-
// as some hooks are not called
197-
mVMC->ProcessRun(1);
198-
}
191+
// Process one event
192+
mVMC->ProcessRun(1);
199193

200194
FairSystemInfo sysinfo;
201195
LOG(INFO) << "TIME-STAMP " << mTimer.RealTime() << "\t";

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