create_rootgeom_MWPC_RunSpring2018.C

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#include "TFile.h"
#include "TGeoBBox.h"
#include "TGeoManager.h"
#include "TGeoMatrix.h"
#include "TGeoShape.h"
#include "TGeoVolume.h"
#include "TMath.h"
#include "TString.h"
// #include "BmnMwpcGeometry.h"
 
using namespace TMath;
 
TGeoManager* gGeoMan = NULL;
void create_rootgeom_MWPC_RunSpring2018()
{
 
    BmnMwpcGeometry* mwpcGeo = new BmnMwpcGeometry();
 
    // Number of active planes with wires
    const Int_t NofPlanes = mwpcGeo->GetNPlanes();
 
    // Detector's position
    const Double_t ZLengthChamber = 9.2741;
 
    const Double_t MWPC0_Xpos = 0.234;
    const Double_t MWPC0_Ypos = 6.14;
    const Double_t MWPC0_Zpos = -207.624 - ZLengthChamber / 2.0;
 
    const Double_t MWPC1_Xpos = 0.271;
    const Double_t MWPC1_Ypos = 6.038;
    const Double_t MWPC1_Zpos = -357.333 - ZLengthChamber / 2.0;
 
    //           2
    //        A______B
    //       / \     |\
    //   3  /   \    | \  1
    //     /     \   |  \   
    //     \      \  |  /
    //   4  \      \ | /  0
    //       \______\|/
    //                C
    //           5
 
    //                        X
    //     _____ <----1----> _____ <-2-> _____
    //    |     |     |     |     |     |     |
    //    |     |     |     |     |     |     |
    //    |     |     |     |     |     |     |
    //    |     |     |     |     |     |     |
    //    |_____|_____|_____|_____|_____|_____|
    //                        X'
    //
    //   1 - GapWireOnePlane
    //   2 - GapWireTwoPlanes
 
    //
    //    |          |          |           |           |           |           |            |
    //    |          |          |           |           |           |           |            |
    //   |2.1338  |1.0015 |1.0015  |1.0015  |1.0015 |1.0015 |2.1328  |
    //
    //
    //     E__D__________F
    //      \ |         /
    //       \|        /
    //        G______H/
    //
    // Detector's construct parameters
    const Double_t ABsize = mwpcGeo->GetPlaneWidth();    // cm
    const Double_t BCsize = mwpcGeo->GetPlaneHeight();   // cm
    const Double_t GapZsize = mwpcGeo->GetPlaneStep();   // cm
 
    const Double_t XSizeOfActiveVolume = ABsize;
    const Double_t YSizeOfActiveVolume = BCsize;
    const Double_t ZSizeOfActiveVolume = GapZsize * NofPlanes;   // cm
 
    // FIXME!!! make sure! sizes of frame
    // const Double_t ZLengthChamber = ZSizeOfActiveVolume + 1.0;
 
    const Double_t CopperLayer = 0.005;
    const Double_t G10Layer = 0.15;
 
    // shell parameters
    const Double_t DGsize = 23;
    const Double_t GHsize = 24.9;
    const Double_t EFsize = 51.56;
    const Double_t AluminiumLayer = 0.2;
 
    // -------   Load media from media file   -----------------------------------
    FairGeoLoader* geoLoad = new FairGeoLoader("TGeo", "FairGeoLoader");
    FairGeoInterface* geoFace = geoLoad->getGeoInterface();
    TString geoPath = TString(gSystem->Getenv("VMCWORKDIR")) + "/geometry/";
    TString medFile = geoPath + "media.geo";
    geoFace->setMediaFile(medFile);
    geoFace->readMedia();
    gGeoMan = gGeoManager;
    // --------------------------------------------------------------------------
 
    // -------   Geometry file name (output)   ----------------------------------
    const TString geoDetectorName = "MWPC";
    const TString geoDetectorVersion = "RunSpring2018";
    TString geoFileName = geoPath + geoDetectorName + "_" + geoDetectorVersion + ".root";
    // --------------------------------------------------------------------------
 
    // -----------------   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* mArCO27030 = geoMedia->getMedium("arco27030");
    if (!mArCO27030)
        Fatal("Main", "FairMedium arco27030 not found");
    geoBuild->createMedium(mArCO27030);
    TGeoMedium* pMedArCO27030 = gGeoMan->GetMedium("arco27030");
    if (!pMedArCO27030)
        Fatal("Main", "Medium arco27030 not found");
 
    FairGeoMedium* mAluminium = geoMedia->getMedium("aluminium");
    if (!mAluminium)
        Fatal("Main", "FairMedium aluminium not found");
    geoBuild->createMedium(mAluminium);
    TGeoMedium* pMedAluminium = gGeoMan->GetMedium("aluminium");
    if (!pMedAluminium)
        Fatal("Main", "Medium aluminium not found");
 
    FairGeoMedium* mG10 = geoMedia->getMedium("G10");
    if (!mG10)
        Fatal("Main", "FairMedium G10 not found");
    geoBuild->createMedium(mG10);
    TGeoMedium* pMedG10 = gGeoMan->GetMedium("G10");
    if (!pMedG10)
        Fatal("Main", "Medium G10 not found");
 
    FairGeoMedium* mCopper = geoMedia->getMedium("copper");
    if (!mCopper)
        Fatal("Main", "FairMedium copper not found");
    geoBuild->createMedium(mCopper);
    TGeoMedium* pMedCopper = gGeoMan->GetMedium("copper");
    if (!pMedCopper)
        Fatal("Main", "Medium copper 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* MWPC = new TGeoVolumeAssembly(geoDetectorName);
    MWPC->SetMedium(pMedAir);
    MWPC->SetTransparency(50);
 
    // Transformations (translations, rotations and scales)
    TGeoTranslation* DetPos0_trans = new TGeoTranslation("DetPos0_trans", MWPC0_Xpos, MWPC0_Ypos, MWPC0_Zpos);
    TGeoTranslation* DetPos1_trans = new TGeoTranslation("DetPos1_trans", MWPC1_Xpos, MWPC1_Ypos, MWPC1_Zpos);
 
    // Solids (shapes)
    // hexagon which contains active wire planes
    TGeoPgon* MWPCContainerS = new TGeoPgon("MWPCContainerS", 0, 360, NofPlanes, 2);
    MWPCContainerS->DefineSection(0, -ZLengthChamber / 2.0 - AluminiumLayer / 2. - CopperLayer - G10Layer, 0.0,
                                  YSizeOfActiveVolume / 2.0 + DGsize + 0.5);
    MWPCContainerS->DefineSection(1, ZLengthChamber / 2.0 + AluminiumLayer / 2. + CopperLayer + G10Layer, 0.0,
                                  YSizeOfActiveVolume / 2.0 + DGsize + 0.5);
 
    // active wire plane
    TGeoBBox* MWPCActivePlaneS =
        new TGeoBBox("MWPCActivePlaneS", XSizeOfActiveVolume / 2.0, YSizeOfActiveVolume / 2.0, 0.1);
 
    // aluminum plates
    TGeoTrap* MWPCAlumPlateS = new TGeoTrap("MWPCAluminiumPlateS", AluminiumLayer / 2.0, 0, 0, DGsize / 2.0,
                                            GHsize / 2.0, EFsize / 2.0, 0, DGsize / 2.0, GHsize / 2.0, EFsize / 2.0, 0);
    TGeoTrap* MWPCAlumCoverS =
        new TGeoTrap("MWPCAluminiumCoverS", ZLengthChamber / 2.0, 0, 0, AluminiumLayer / 2.0, EFsize / 2.0,
                     EFsize / 2.0, 0, AluminiumLayer / 2.0, EFsize / 2.0, EFsize / 2.0, 0);
 
    // G10 plates
    TGeoPgon* MWPCG10PlateS = new TGeoPgon("MWPCG10PlateS", 0, 360, NofPlanes, 2);
    MWPCG10PlateS->DefineSection(0, -G10Layer / 2., 0.0, YSizeOfActiveVolume / 2.0 + 1.0);
    MWPCG10PlateS->DefineSection(1, G10Layer / 2., 0.0, YSizeOfActiveVolume / 2.0 + 1.0);
 
    // copper plates
    TGeoPgon* MWPCCopperPlateS = new TGeoPgon("MWPCCopperPlateS", 0, 360, NofPlanes, 2);
    MWPCCopperPlateS->DefineSection(0, -CopperLayer / 2., 0.0, YSizeOfActiveVolume / 2.0 + 1.0);
    MWPCCopperPlateS->DefineSection(1, CopperLayer / 2., 0.0, YSizeOfActiveVolume / 2.0 + 1.0);
 
    // Volumes
    TGeoVolume* MWPCContainerV = new TGeoVolume("MWPCContainerV", MWPCContainerS);
    MWPCContainerV->SetMedium(pMedAir);
    MWPCContainerV->SetVisibility(kTRUE);
    MWPCContainerV->SetTransparency(75);
 
    TGeoVolume* MWPCActivePlaneV = new TGeoVolume("MWPCActivePlaneV", MWPCActivePlaneS);
    MWPCActivePlaneV->SetMedium(pMedArCO27030);
    MWPCActivePlaneV->SetLineColor(kBlue);
    MWPCActivePlaneV->SetTransparency(80);
 
    TGeoVolume* MWPCAlumPlateV = new TGeoVolume("MWPCAluminiumPlateV", MWPCAlumPlateS);
    MWPCAlumPlateV->SetMedium(pMedAluminium);
    MWPCAlumPlateV->SetLineColor(43);
    MWPCAlumPlateV->SetTransparency(60);
 
    TGeoVolume* MWPCAlumCoverV = new TGeoVolume("MWPCAluminiumCoverV", MWPCAlumCoverS);
    MWPCAlumPlateV->SetMedium(pMedAluminium);
    MWPCAlumPlateV->SetLineColor(43);
    MWPCAlumPlateV->SetTransparency(60);
 
    TGeoVolume* MWPCG10PlateV = new TGeoVolume("MWPCG10PlateV", MWPCG10PlateS);
    MWPCG10PlateV->SetMedium(pMedG10);
    MWPCG10PlateV->SetVisibility(kTRUE);
    MWPCG10PlateV->SetLineColor(43);
    MWPCG10PlateV->SetTransparency(5);
 
    TGeoVolume* MWPCCopperPlateV = new TGeoVolume("MWPCCopperPlateV", MWPCCopperPlateS);
    MWPCCopperPlateV->SetMedium(pMedCopper);
    MWPCG10PlateV->SetVisibility(kTRUE);
    MWPCCopperPlateV->SetLineColor(43);
    MWPCCopperPlateV->SetTransparency(20);
 
    for (Int_t iPlane = 1; iPlane <= NofPlanes; ++iPlane) {
        TGeoTranslation t0(0.0, 0.0, GapZsize * (iPlane - (NofPlanes + 1) / 2.0));
        TGeoRotation r0("r0", 0.0, 0.0, (iPlane - 1) * 60.0);
        MWPCContainerV->AddNode(MWPCActivePlaneV, iPlane - 1, new TGeoCombiTrans(t0, r0));
    }
 
    Double_t Y = YSizeOfActiveVolume / 2.0 + DGsize / 2.0 + 0.1;
    Double_t Y1 = Y + AluminiumLayer / 2. + DGsize / 2. + 0.2;
 
    for (Int_t iAlPlate = 1; iAlPlate <= 6; ++iAlPlate) {
 
        TGeoTranslation t0(-Y * sin((iAlPlate - 1) * M_PI / 3.0), Y * cos((iAlPlate - 1) * M_PI / 3.0),
                           ZLengthChamber / 2.0);
        TGeoRotation r0("r0", 0.0, 0.0, (iAlPlate - 1) * 60.0);
        MWPCContainerV->AddNode(MWPCAlumPlateV, 0, new TGeoCombiTrans(t0, r0));
 
        TGeoTranslation t1(-Y * sin((iAlPlate - 1) * M_PI / 3.0), Y * cos((iAlPlate - 1) * M_PI / 3.0),
                           -ZLengthChamber / 2.0);
        TGeoRotation r1("r1", 0.0, 0.0, (iAlPlate - 1) * 60.0);
        MWPCContainerV->AddNode(MWPCAlumPlateV, 0, new TGeoCombiTrans(t1, r1));
 
        TGeoTranslation t2(-Y1 * sin((iAlPlate - 1) * M_PI / 3.0), Y1 * cos((iAlPlate - 1) * M_PI / 3.0), 0);
        TGeoRotation r2("r2", 0.0, 0.0, (iAlPlate - 1) * 60.0);
        MWPCContainerV->AddNode(MWPCAlumCoverV, 0, new TGeoCombiTrans(t2, r2));
    }
 
    for (Int_t iSide = 0; iSide <= 1; ++iSide) {
 
        TGeoTranslation t0(0.0, 0.0, (1 - 2 * iSide) * (ZLengthChamber / 2.0 + AluminiumLayer / 2. + G10Layer / 2.));
        TGeoRotation r0("r0", 0.0, 0.0, 0.0);
        MWPCContainerV->AddNode(MWPCG10PlateV, 0, new TGeoCombiTrans(t0, r0));
 
        TGeoTranslation t1(
            0.0, 0.0, (1 - 2 * iSide) * (ZLengthChamber / 2.0 + AluminiumLayer / 2. + G10Layer + CopperLayer / 2.));
        TGeoRotation r1("r1", 0.0, 0.0, 0.0);
        MWPCContainerV->AddNode(MWPCCopperPlateV, 0, new TGeoCombiTrans(t1, r1));
    }
 
    MWPC->AddNode(MWPCContainerV, 0, DetPos0_trans);
    MWPC->AddNode(MWPCContainerV, 0, DetPos1_trans);
    // MWPC->AddNode(MWPCTextPlaneV, 0, DetPosTest_trans);
    // Adding volumes to the TOP Volume
    top->AddNode(MWPC, 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");
}