exampleB4a.cc

//
// ********************************************************************
// * License and Disclaimer                                           *
// *                                                                  *
// * The  Geant4 software  is  copyright of the Copyright Holders  of *
// * the Geant4 Collaboration.  It is provided  under  the terms  and *
// * conditions of the Geant4 Software License,  included in the file *
// * LICENSE and available at  http://cern.ch/geant4/license .  These *
// * include a list of copyright holders.                             *
// *                                                                  *
// * Neither the authors of this software system, nor their employing *
// * institutes,nor the agencies providing financial support for this *
// * work  make  any representation or  warranty, express or implied, *
// * regarding  this  software system or assume any liability for its *
// * use.  Please see the license in the file  LICENSE  and URL above *
// * for the full disclaimer and the limitation of liability.         *
// *                                                                  *
// * This  code  implementation is the result of  the  scientific and *
// * technical work of the GEANT4 collaboration.                      *
// * By using,  copying,  modifying or  distributing the software (or *
// * any work based  on the software)  you  agree  to acknowledge its *
// * use  in  resulting  scientific  publications,  and indicate your *
// * acceptance of all terms of the Geant4 Software license.          *
// ********************************************************************
//
// $Id: exampleB4a.cc 100946 2016-11-03 11:28:08Z gcosmo $
//
/// \file exampleB4a.cc
/// \brief Main program of the B4a example

#include "B4DetectorConstruction.hh"
#include "B4aActionInitialization.hh"
#include <string>

#include "defines.h"

#ifdef G4MULTITHREADED
#undef G4MULTITHREADED
#endif

#ifdef G4MULTITHREADED
#include "G4MTRunManager.hh"
#else

#include "G4RunManager.hh"

#endif

#include<string>

#include "G4UImanager.hh"
#include "G4UIcommand.hh"
#include "FTFP_BERT.hh"
#include "QGSP_FTFP_BERT.hh"

#include "Randomize.hh"

#include "G4VisExecutive.hh"
#include "G4UIExecutive.hh"
#include "G4RandomTools.hh"
#include "B4DetectorConstructionFP.hh"

//limiter stuff

#include "G4PhysicsListHelper.hh"
#include "G4StepLimiterPhysics.hh"
#include "G4UserSpecialCuts.hh"
#include "G4StepLimiter.hh"
#include "G4ParticleTable.hh"
#include "G4ParticleDefinition.hh"
#include "G4ProcessManager.hh"

#include "B4PartGeneratorBase.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

namespace {
    void PrintUsage() {
        G4cerr << " Usage: " << G4endl;
        G4cerr << " exampleB4a [-m macro ] [-f filenumber=seed] [-o seedoffset (to be added to filenumber)]" << G4endl;
        G4cerr << "   note: -t option is available only for multi-threaded mode."
               << G4endl;
    }
}


void enable_physlimits(void) {
    return;
    // cf. Geant 4 HyperNews, Forum "Physics List", Message 129
    // http://geant4-hn.slac.stanford.edu:5090/HyperNews/public/get/phys-list/129.html

    G4UserSpecialCuts *specialCuts = new G4UserSpecialCuts;
    G4StepLimiter *stepLimiter = new G4StepLimiter;

    G4ParticleTable *particleTable = G4ParticleTable::GetParticleTable();
    G4ParticleTable::G4PTblDicIterator *particleIterator = particleTable->GetIterator();
    // make sure you have called "G4RunManager::Initialize()" before

    particleIterator->reset();
    while ((*particleIterator)()) {
        // iterate through all known particles

        G4ParticleDefinition *particleDefinition = particleIterator->value();
        G4ProcessManager *processManager = particleDefinition->GetProcessManager();

        if (processManager && !particleDefinition->IsShortLived() && particleDefinition->GetPDGCharge() != 0) {
            // the process manager should exist, but we don't need to limit short-lived particles or neutrals

            processManager->AddDiscreteProcess(stepLimiter);
            processManager->AddDiscreteProcess(specialCuts);
            // these transportation-related processes are always applicable

        }
    }
}


//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

int main(int argc, char **argv) {
    // Evaluate arguments
    //
    if (argc > 13) {
        std::cout << "Args too many" << std::endl;
        PrintUsage();
        return 1;
    }
    long rseed = 0;
    G4String macro;
    G4String session;
    G4String outfile = "out";

    std::string jsonfile;
    std::string rootfile;
    std::string binfile;

    bool pu_simulation = false;

#ifdef G4MULTITHREADED
    G4int nThreads = 0;
#endif
    for (G4int i = 1; i < argc;) {
        if (G4String(argv[i]) == "-m") {
            macro = argv[i + 1];
            i = i + 2;
        } else if (G4String(argv[i]) == "-u") {
            session = argv[i + 1];
            i = i + 2;
        } else if (G4String(argv[i]) == "-j") {
            jsonfile = std::string(argv[i + 1]);
            i = i + 2;
        } else if (G4String(argv[i]) == "-r") {
            rootfile = std::string(argv[i + 1]);
            i = i + 2;
        } else if (G4String(argv[i]) == "-b") {
            binfile = std::string(argv[i + 1]);
            i = i + 2;
        } else if (G4String(argv[i]) == "-p") {
            pu_simulation = true;
            i = i + 1;
        } else if (G4String(argv[i]) == "-f") {
            rseed += atoi(argv[i + 1]);
            i = i + 2;
        } else if (G4String(argv[i]) == "-o") {
            rseed += atoi(argv[i + 1]);
            i = i + 2;
        } else {
            std::cout << "Problem " << argv[i] << std::endl;
            PrintUsage();
            return 1;
        }
    }

    if (pu_simulation) {
        if (jsonfile.size() > 0) {
            std::cout<<"Error: PU simulation won't take json file"<<std::endl;
            exit(1);
        }
    }

    outfile += std::to_string(rseed);
    rseed++;
    // Detect interactive mode (if no macro provided) and define UI session
    //
    G4UIExecutive *ui = 0;
    if (!macro.size()) {
        ui = new G4UIExecutive(argc, argv, session);
    }


    // Choose the Random engine
    //

    B4PartGeneratorBase::seedsoffset_ = 800 * rseed;
    G4cout << "random seed " << rseed << G4endl;

    // Construct the default run manager
    //
#ifdef G4MULTITHREADED
    nThreads = 6;

    std::cout<<"Is multi threaded: "<<nThreads<<std::endl;
    auto runManager = new G4MTRunManager;
    if ( nThreads > 0 ) {
      runManager->SetNumberOfThreads(nThreads);
    }
#else
    auto runManager = new G4RunManager;
#endif

    // Set mandatory initialization classes
    //
  std::string filename("/Users/shahrukhqasim/Workspace/NextCal/ShahRukhStudies/scripts/toydetector/detector_specs.json");
//    std::string filename(
//            "/afs/cern.ch/work/s/sqasim/workspace_phd_5/NextCal/ShahRukhStudies/scripts/toydetector/detector_specs.json");

    Json::Value root;
    std::ifstream ifs;
    ifs.open(filename);

    Json::CharReaderBuilder builder;
    builder["collectComments"] = true;
    JSONCPP_STRING errs;
    if (!parseFromStream(builder, ifs, &root, &errs)) {
        std::cout << errs << std::endl;
        return EXIT_FAILURE;
    }
    auto detConstruction = new B4DetectorConstruction(root);
//  auto detConstruction = new B4DetectorConstructionFP(root);
    runManager->SetUserInitialization(detConstruction);


    auto physicsList = new FTFP_BERT;
    physicsList->RegisterPhysics(new G4StepLimiterPhysics());
    runManager->SetUserInitialization(physicsList);

    auto actionInitialization = new B4aActionInitialization(detConstruction, nullptr, nullptr);
    actionInitialization->setFilename(rootfile);
    runManager->SetUserInitialization(actionInitialization);


    enable_physlimits();


    //SetThresholdWarningEnergy(500*MeV)

    // Initialize visualization
    //
#ifdef USEVIS
    auto visManager = new G4VisExecutive;
    // G4VisExecutive can take a verbosity argument - see /vis/verbose guidance.
   // G4VisManager* visManager = new G4VisExecutive("Quiet");
   // visManager->Initialize();
    //auto visManager = new G4VisExecutive();
       visManager->Initialize();
#endif
    // Get the pointer to the User Interface manager
    G4UImanager *UImanager = G4UImanager::GetUIpointer();

    if (argc != 1)   // batch mode
    {
        G4String command = "/control/execute ";
        G4String fileName = macro;
        UImanager->ApplyCommand(command + fileName);
    } else {  // interactive mode : define UI session

        G4UIExecutive *ui = new G4UIExecutive(argc, argv);

        UImanager->ApplyCommand("/control/execute init_vis.mac");

        if (ui->IsGUI())
            UImanager->ApplyCommand("/control/execute gui.mac");
        ui->SessionStart();
        delete ui;

    }


    // Job termination
    // Free the store: user actions, physics_list and detector_description are
    // owned and deleted by the run manager, so they should not be deleted
    // in the main() program !

//  delete visManager;
    delete runManager;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....