create_rootgeom_TOF700_run6.C

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//---------------------------
 
#define TOF2_MAX_CHAMBERS 24
#define TOF2_MAX_STRIPS_IN_CHAMBER 32
 
TGeoManager* gGeoMan = NULL;
Double_t halfxwidth[TOF2_MAX_CHAMBERS];
Double_t halfywidth[TOF2_MAX_CHAMBERS];
Double_t xoffs, yoffs, zoffs;
Int_t nstrips[TOF2_MAX_CHAMBERS];
Int_t chtype[TOF2_MAX_CHAMBERS];
Double_t zchamb[TOF2_MAX_CHAMBERS];
Double_t xcens[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
Double_t ycens[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
Double_t xmins[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
Double_t xmaxs[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
Double_t ymins[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
Double_t ymaxs[TOF2_MAX_CHAMBERS][TOF2_MAX_STRIPS_IN_CHAMBER];
 
// Number of chambers
Int_t TOF2_Nmodules = 0;
 
// Detector's construct parameters
Double_t ChamberThickness_TOF2 = 1.680;
Double_t AlLayerThickness_TOF2 = 0.150;
Double_t GasLayerThickness_TOF2 = 0.264;
Double_t GlassLayerThickness_TOF2 = 0.860 / 2.;
Double_t G10LayerThickness_TOF2 =
    ChamberThickness_TOF2 - AlLayerThickness_TOF2 - GasLayerThickness_TOF2 - 2. * GlassLayerThickness_TOF2 + 0.01;
Double_t XWidthOfModule_TOF2[2] = {0.};
Double_t YWidthOfModule_TOF2[2] = {0.};
Double_t XActWidthOfModule_TOF2[2] = {0.};
Double_t YActWidthOfModule_TOF2[2] = {0.};
Double_t ZWidthOfModule_TOF2 = ChamberThickness_TOF2;
 
Char_t TOF2_Module_Names[TOF2_MAX_CHAMBERS][8];
 
Double_t TOF2_X_center[TOF2_MAX_CHAMBERS] = {0.};
Double_t TOF2_Y_center[TOF2_MAX_CHAMBERS] = {0.};
Double_t TOF2_Z_center[TOF2_MAX_CHAMBERS] = {0.};
 
void create_rootgeom_TOF700_run6()
{
 
    // Load the necessary FairRoot libraries
    gROOT->LoadMacro("$VMCWORKDIR/macro/run/bmnloadlibs.C");
    bmnloadlibs();   // load libraries
 
    // -------   Load media from media file   -----------------------------------
    FairGeoLoader* geoLoad = new FairGeoLoader("TGeo", "FairGeoLoader");
    FairGeoInterface* geoFace = geoLoad->getGeoInterface();
    TString geoPath = gSystem->Getenv("VMCWORKDIR");
    TString medFile = geoPath + "/geometry/media.geo";
    geoFace->setMediaFile(medFile);
    geoFace->readMedia();
    gGeoMan = gGeoManager;
    // -------   Geometry text file name (input)   ----------------------------------
    TOF2_Nmodules = readGeom("TOF700_geometry_run6.txt");
    // -------   Geometry file name (output)   ----------------------------------
    TString geoDetectorName = "tof700";
    TString geoDetectorVersion = "run6";
    geoFileName = geoPath + "/geometry/" + geoDetectorName + "_" + geoDetectorVersion + ".root";
    // --------------------------------------------------------------------------
    // Modules Y centers
    Double_t dy = 0.;
    for (int i = 0; i < TOF2_Nmodules; i++) {
        dy = (ymins[i][nstrips[i] - 1] - ymaxs[i][nstrips[i] - 2]) / 2.;
        TOF2_X_center[i] = xcens[i][nstrips[i] - 1];
        TOF2_Y_center[i] = (ycens[i][nstrips[i] - 1] + ycens[i][0]) / 2.;
        TOF2_Z_center[i] = zchamb[i];
        printf("Chamber %d  Z = %f\n", i + 1, TOF2_Z_center[i]);
        XActWidthOfModule_TOF2[chtype[i]] = xmaxs[i][0] - xmins[i][0];
        YActWidthOfModule_TOF2[chtype[i]] = ymaxs[i][nstrips[i] - 1] - ymins[i][0] + dy;
        XWidthOfModule_TOF2[chtype[i]] = xmaxs[i][0] - xmins[i][0] + 3.0;
        YWidthOfModule_TOF2[chtype[i]] = ymaxs[i][nstrips[i] - 1] - ymins[i][0] + dy + 3.0;
    }
    // Container size calculations
    Double_t xmin = 10000., ymin = 10000., zmin = 10000.;
    Double_t xmax = -10000., ymax = -10000., zmax = -10000.;
    for (int i = 0; i < TOF2_Nmodules; i++) {
        if (TOF2_X_center[i] < xmin)
            xmin = TOF2_X_center[i];
        if (TOF2_Y_center[i] < ymin)
            ymin = TOF2_Y_center[i];
        if (TOF2_Z_center[i] < zmin)
            zmin = TOF2_Z_center[i];
        if (TOF2_X_center[i] > xmax)
            xmax = TOF2_X_center[i];
        if (TOF2_Y_center[i] > ymax)
            ymax = TOF2_Y_center[i];
        if (TOF2_Z_center[i] > zmax)
            zmax = TOF2_Z_center[i];
    }
    Double_t TOF2_X_min = xmin - XWidthOfModule_TOF2[1] / 2.;
    Double_t TOF2_Y_min = ymin - YWidthOfModule_TOF2[1] / 2.;
    Double_t TOF2_Z_min = zmin - ZWidthOfModule_TOF2[1] / 2.;
    Double_t TOF2_X_max = xmax + XWidthOfModule_TOF2[1] / 2.;
    Double_t TOF2_Y_max = ymax + YWidthOfModule_TOF2[1] / 2.;
    Double_t TOF2_Z_max = zmax + ZWidthOfModule_TOF2[1] / 2.;
 
    Double_t TOF2_XWidth =
        TMath::Abs(TOF2_X_max) > TMath::Abs(TOF2_X_min) ? (2 * TMath::Abs(TOF2_X_max)) : (2 * TMath::Abs(TOF2_X_min));
    Double_t TOF2_YWidth =
        TMath::Abs(TOF2_Y_max) > TMath::Abs(TOF2_Y_min) ? (2 * TMath::Abs(TOF2_Y_max)) : (2 * TMath::Abs(TOF2_Y_min));
    Double_t TOF2_ZWidth =
        TMath::Abs(TOF2_Z_max) > TMath::Abs(TOF2_Z_min) ? (2 * TMath::Abs(TOF2_Z_max)) : (2 * TMath::Abs(TOF2_Z_min));
 
    Double_t TOF2_X = (TOF2_X_max + TOF2_X_min) / 2.;   // + TOF2_Xpos;
    Double_t TOF2_Y = (TOF2_Y_max + TOF2_Y_min) / 2.;   // + TOF2_Ypos;
    Double_t TOF2_Z = (TOF2_Z_max + TOF2_Z_min) / 2.;   // + TOF2_Zpos;
 
    // -----------------   Get and create the required media    -----------------
    FairGeoMedia* geoMedia = geoFace->getMedia();
    FairGeoBuilder* geoBuild = geoLoad->getGeoBuilder();
 
    FairGeoMedium* mAir = geoMedia->getMedium("air");
    if (!mAir)
        Fatal("Main", "FairMedium air not found");
    geoBuild->createMedium(mAir);
    TGeoMedium* pMedAir = gGeoMan->GetMedium("air");
    if (!pMedAir)
        Fatal("Main", "Medium air not found");
 
    FairGeoMedium* mRPCglass = geoMedia->getMedium("RPCglass");
    if (!mRPCglass)
        Fatal("Main", "FairMedium RPCglass not found");
    geoBuild->createMedium(mRPCglass);
    TGeoMedium* pMedRPCglass = gGeoMan->GetMedium("RPCglass");
    if (!pMedRPCglass)
        Fatal("Main", "Medium RPCglass not found");
 
    FairGeoMedium* mRPCgas = geoMedia->getMedium("RPCgas");
    if (!mRPCgas)
        Fatal("Main", "FairMedium RPCgas not found");
    geoBuild->createMedium(mRPCgas);
    TGeoMedium* pMedRPCgas = gGeoMan->GetMedium("RPCgas");
    if (!pMedRPCgas)
        Fatal("Main", "Medium RPCgas not found");
 
    // aluminium
    FairGeoMedium* matAl = geoMedia->getMedium("aluminium");
    if (!matAl)
        Fatal("Main", "FairMedium aluminium not found");
    geoBuild->createMedium(matAl);
    TGeoMedium* medAl = gGeoMan->GetMedium("aluminium");
    if (!medAl)
        Fatal("Main", "Medium aluminium not found");
 
    // G10
    FairGeoMedium* matG10 = geoMedia->getMedium("G10");
    if (!matG10)
        Fatal("Main", "FairMedium G10 not found");
    geoBuild->createMedium(matG10);
    TGeoMedium* medG10 = gGeoMan->GetMedium("G10");
    if (!medG10)
        Fatal("Main", "Medium G10 not found");
 
    // --------------------------------------------------------------------------
 
    // --------------   Create geometry and top volume  -------------------------
    gGeoMan = (TGeoManager*)gROOT->FindObject("FAIRGeom");
    gGeoMan->SetName(geoDetectorName + "_geom");
    TGeoVolume* top = new TGeoVolumeAssembly("TOP");
    top->SetMedium(pMedAir);
    gGeoMan->SetTopVolume(top);
    // gGeoMan->SetTopVisible(1);
    //  --------------------------------------------------------------------------
 
    // Define TOP Geometry
    TGeoVolume* TOF2Top = new TGeoVolumeAssembly(geoDetectorName);
    TOF2Top->SetMedium(pMedAir);
 
    // Transformations (translations, rotations and scales)
    // TGeoTranslation *DetPos_trans = new TGeoTranslation("DetPos_trans", xoffs, yoffs, zoffs);
    // DetPos_trans->RegisterYourself();
    TGeoTranslation* ModulePosTOF2_trans[TOF2_MAX_CHAMBERS] = {NULL};
    TGeoTranslation* LayerPosTOF2_trans = 0;
    char name[64];
    for (int i = 0; i < TOF2_Nmodules; i++) {
        sprintf(name, "Module_%d_PosTOF2_trans", i + 1);
        ModulePosTOF2_trans[i] = new TGeoTranslation(name, TOF2_X_center[i], TOF2_Y_center[i], TOF2_Z_center[i]);
        //        ModulePosTOF2_trans[i]->RegisterYourself();
    }
    Double_t GlassLayer1Pos = AlLayerThickness_TOF2 + GlassLayerThickness_TOF2 / 2. - ZWidthOfModule_TOF2 / 2.;
    sprintf(name, "GlassLayer1PosTOF2_trans");
    GlassLayer1PosTOF2_trans = new TGeoTranslation(name, 0., 0., GlassLayer1Pos);
    Double_t GasLayerPos =
        AlLayerThickness_TOF2 + GlassLayerThickness_TOF2 + GasLayerThickness_TOF2 / 2. - ZWidthOfModule_TOF2 / 2.;
    sprintf(name, "GasLayerPosTOF2_trans");
    GasLayerPosTOF2_trans = new TGeoTranslation(name, 0., 0., GasLayerPos);
    Double_t GlassLayer2Pos = AlLayerThickness_TOF2 + GlassLayerThickness_TOF2 + GasLayerThickness_TOF2
                              + GlassLayerThickness_TOF2 / 2. - ZWidthOfModule_TOF2 / 2.;
    sprintf(name, "GlassLayer2PosTOF2_trans");
    GlassLayer2PosTOF2_trans = new TGeoTranslation(name, 0., 0., GlassLayer2Pos);
    Double_t G10LayerPos = AlLayerThickness_TOF2 + GlassLayerThickness_TOF2 + GasLayerThickness_TOF2
                           + GlassLayerThickness_TOF2 + G10LayerThickness_TOF2 / 2. - ZWidthOfModule_TOF2 / 2.;
    sprintf(name, "G10LayerPosTOF2_trans");
    G10LayerPosTOF2_trans = new TGeoTranslation(name, 0., 0., G10LayerPos);
 
    // Solids (shapes)
    // TGeoBBox *TOF2ContainerS = new TGeoBBox("TOF2ContainerS", TOF2_XWidth/2, TOF2_YWidth/2, TOF2_ZWidth/2);
    // TGeoVolume *TOF2ContainerV = new TGeoVolume("TOF2ContainerV", TOF2ContainerS);
    // TOF2ContainerV->SetMedium(pMedAir);
    // TOF2ContainerV->SetVisibility(kFALSE);
    // top->AddNode(TOF2Top, 1, DetPos_trans);
    //    TOF2Top->AddNode(TOF2ContainerV, 1, ContainerPos_trans);
    // TOF2Top->AddNode(TOF2ContainerV, 1);
 
    char nTOF2ModuleS[2][32] = {"TOF2ChamberS0", "TOF2ChamberS1"};
    char nTOF2GlassVolumeS[2][32] = {"TOF2GlassVolumeS0", "TOF2GlassVolumeS1"};
    char nTOF2G10VolumeS[2][32] = {"TOF2G10VolumeS0", "TOF2G10VolumeS1"};
    char nTOF2ActiveGasVolumeS[2][32] = {"TOF2ActiveGasVolumeS0", "TOF2ActiveGasVolumeS1"};
    char nTOF2ModuleV[2][32] = {"TOF2ChamberV0", "TOF2ChamberV1"};
    char nTOF2GlassVolumeV[2][32] = {"TOF2GlassVolumeV0", "TOF2GlassVolumeV1"};
    char nTOF2G10VolumeV[2][32] = {"TOF2G10VolumeV0", "TOF2G10VolumeV1"};
    char nTOF2ActiveGasVolumeV[2][32] = {"TOF2ActiveGasVolumeV0", "TOF2ActiveGasVolumeV1"};
    TGeoBBox* TOF2ModuleS[2];
    TGeoBBox* TOF2GlassVolumeS[2];
    TGeoBBox* TOF2ActiveGasVolumeS[2];
    TGeoBBox* TOF2G10VolumeS[2];
    TGeoVolume* TOF2ModuleV[2];
    TGeoVolume* TOF2GlassVolumeV[2];
    TGeoVolume* TOF2ActiveGasVolumeV[2];
    TGeoVolume* TOF2G10VolumeV[2];
 
    int nstr[2] = {32, 16};
    for (int i = 0; i < 2; i++) {
        TOF2ModuleS[i] = new TGeoBBox(nTOF2ModuleS[i], XWidthOfModule_TOF2[i] / 2 + 0.001,
                                      YWidthOfModule_TOF2[i] / 2 + 0.001, ZWidthOfModule_TOF2 / 2 + 0.001);
        TOF2GlassVolumeS[i] = new TGeoBBox(nTOF2GlassVolumeS[i], XActWidthOfModule_TOF2[i] / 2,
                                           YActWidthOfModule_TOF2[i] / 2, GlassLayerThickness_TOF2 / 2);
        TOF2ActiveGasVolumeS[i] = new TGeoBBox(nTOF2ActiveGasVolumeS[i], XActWidthOfModule_TOF2[i] / 2,
                                               YActWidthOfModule_TOF2[i] / 2, GasLayerThickness_TOF2 / 2);
        TOF2G10VolumeS[i] = new TGeoBBox(nTOF2G10VolumeS[i], XActWidthOfModule_TOF2[i] / 2,
                                         YActWidthOfModule_TOF2[i] / 2, G10LayerThickness_TOF2 / 2);
 
        // Composite solids (shapes)
 
        // Volumes
 
        TOF2ModuleV[i] = new TGeoVolume(nTOF2ModuleV[i], TOF2ModuleS[i]);
        TOF2ModuleV[i]->SetMedium(medAl);
        TOF2ModuleV[i]->SetLineColor(kBlue);
        TOF2ModuleV[i]->SetVisibility(kTRUE);
        // TOF2ModuleV[i]->SetTransparency(80);
 
        TOF2GlassVolumeV[i] = new TGeoVolume(nTOF2GlassVolumeV[i], TOF2GlassVolumeS[i]);
        TOF2GlassVolumeV[i]->SetMedium(pMedRPCglass);
        TOF2GlassVolumeV[i]->SetLineColor(kGreen);
 
        TOF2ActiveGasVolumeV[i] = new TGeoVolume(nTOF2ActiveGasVolumeV[i], TOF2ActiveGasVolumeS[i]);
        TOF2ActiveGasVolumeV[i]->SetMedium(pMedRPCgas);
        TOF2ActiveGasVolumeV[i]->SetLineColor(kYellow);
        TOF2ActiveGasVolumeV[i]->Divide("ActiveGasStrip", 2, nstr[i], 0, -1);
 
        TOF2G10VolumeV[i] = new TGeoVolume(nTOF2G10VolumeV[i], TOF2G10VolumeS[i]);
        TOF2G10VolumeV[i]->SetMedium(medG10);
        TOF2G10VolumeV[i]->SetLineColor(kMagenta);
 
        TOF2ModuleV[i]->AddNode(TOF2GlassVolumeV[i], 1, GlassLayer1PosTOF2_trans);
        TOF2ModuleV[i]->AddNode(TOF2ActiveGasVolumeV[i], 1, GasLayerPosTOF2_trans);
        TOF2ModuleV[i]->AddNode(TOF2GlassVolumeV[i], 2, GlassLayer2PosTOF2_trans);
        TOF2ModuleV[i]->AddNode(TOF2G10VolumeV[i], 1, G10LayerPosTOF2_trans);
    }
 
    // Adding volumes to the TOP Volume
    Int_t nm[2] = {0};
    for (int i = 0; i < TOF2_Nmodules; i++) {
        //  TOF2Top->AddNode(TOF2ModuleV[chtype[i]], nm[chtype[i]]+1, ModulePosTOF2_trans[i]);
        //  nm[chtype[i]]++;
        TOF2Top->AddNode(TOF2ModuleV[chtype[i]], nm[0] + 1, ModulePosTOF2_trans[i]);
        nm[0]++;
    }
 
    top->AddNode(TOF2Top, 0);
    top->SetVisContainers(kTRUE);
 
    // ---------------   Finish   -----------------------------------------------
    gGeoMan->CloseGeometry();
    gGeoMan->CheckOverlaps(0.001);
    gGeoMan->PrintOverlaps();
    gGeoMan->Test();
 
    TFile* geoFile = new TFile(geoFileName, "RECREATE");
    top->Write();
    geoFile->Close();
    top->Draw("ogl");
}
int readGeom(char* geomfile)
{
    char fname[128];
    FILE* fg = 0;
    char ic[16] = {""};
    int n = 0;
    Double_t step, sx, sy, x, y, z;
    if (strlen(geomfile) == 0) {
        printf("TOF700 geometry file name not defined!\n");
        return 0;
    }
    TString dir = getenv("VMCWORKDIR");
    sprintf(fname, "%s/geometry/%s", dir.Data(), geomfile);
    fg = fopen(fname, "r");
    if (fg == NULL) {
        printf("TOF700 geometry file %s open error!\n", fname);
        return 0;
    }
    if (fscanf(fg, "%lf %lf %lf\n", &xoffs, &yoffs, &zoffs) != 3) {
        printf("Wrong first line in TOF700 geometry file %s\n", fname);
        return 0;
    };
    printf("Zoffs = %f\n", zoffs);
    for (int i = 0; i < TOF2_MAX_CHAMBERS; i++)
        nstrips[i] = 0;
    int c = 0;
    while (fscanf(fg, "%s %d %lf %lf %lf %lf %lf %lf\n", &ic[0], &n, &step, &sy, &sx, &x, &y, &z) == 8) {
        strcpy(TOF2_Module_Names[c], ic);
        halfxwidth[c] = sx / 20.;
        halfywidth[c] = sy / 20.;
        zchamb[c] = z / 10. + zoffs;
        nstrips[c] = n;
        if (n == 32)
            chtype[c] = 0;
        else
            chtype[c] = 1;
        for (int ns = n - 1; ns >= 0; ns--) {
            xcens[c][ns] = -x / 10. + xoffs;
            ycens[c][ns] = y / 10. + yoffs - (n - ns - 1) * step / 10.;
            xmins[c][ns] = xcens[c][ns] - halfxwidth[c];
            xmaxs[c][ns] = xcens[c][ns] + halfxwidth[c];
            ymins[c][ns] = ycens[c][ns] - halfywidth[c];
            ymaxs[c][ns] = ycens[c][ns] + halfywidth[c];
            //      printf("C %d S %d %f %f %f %f
            //%f\n",ic,n,zchamb[c],xmins[c][ns],xmaxs[c][ns],ymins[c][ns],ymaxs[c][ns]);
        }
        printf("%s ns=%d step=%f sx=%f sy=%f x=%f y=%f z=%f\n", ic, n, step, sx, sy, x, y, z);
        c++;
        if (c >= TOF2_MAX_CHAMBERS)
            break;
    }
    fclose(fg);
    return c;
}