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fbgt.C
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file fbgt.C
1 
2 // Meaningless number for now; fine;
3 #define _VERSION_ 2
4 #define _SUBVERSION_ 0
5 
6 // Do not want to always overwrite "official" files; place "test" tag into the file name;
7 //#define _TEST_VERSION_
8 
9 // All construction elements are smeared (so chip assembly is uniform in both
10 // beam line and asimuthal direction);
11 //#define _NO_STRUCTURE_GEOMETRY_
12 
13 // Comment out if no mounting rings not wanted;
14 //#define _WITH_MOUNTING_RINGS_
15 
17 {
18  // Load basic libraries;
19  gROOT->Macro("$VMCWORKDIR/gconfig/rootlogon.C");
20 
21  // Configure SBS GEMs; they will be used as a sample for other modules;
22  GemModule *sbs = new GemModule();
23 
24  sbs->mActiveWindowBottomWidth = 110.0 - 80.0;
25  sbs->mActiveWindowTopWidth = 270.0 + 80.0 + 80.0;
26  sbs->mActiveWindowHeight = 300.0 + 2*150.0 + 100.0;
27 
28  // Frame parameters accoring to Kondo's sbsCrossSection.pdf file;
29  sbs->mFrameThickness = 18.0;
30  sbs->mFrameBottomEdgeWidth = 30.0;
31  sbs->mFrameTopEdgeWidth = 30.0;
32  sbs->mFrameSideEdgeWidth = 8.0;
33 
34  // FIXME: put aluminum layer later as well;
35  sbs->mEntranceWindowMaterial = "GemKapton";
36  sbs->mEntranceWindowThickness = 0.025;
37 
38  // Use evaristo.pdf p.10 for the foil parameters:
39  // - drift foil : 50um kapton + 3um copper;
40  // - GEM foil : 30um kapton + 3um copper (80% area fraction);
41  // - readout foils : 30um kapton + 3um copper total;
42  sbs->mDriftFoilKaptonThickness = 0.050;
43  sbs->mDriftFoilCopperThickness = 0.003;
44 
45  sbs->mGemFoilAreaFraction = 0.80;
46  sbs->mGemFoilKaptonThickness = 0.030;
47  sbs->mGemFoilCopperThickness = 0.003;
48 
49  sbs->mReadoutG10Thickness = 0.0;
50  sbs->mReadoutKaptonThickness = 0.030;
51  sbs->mReadoutCopperThickness = 0.003;
52 
53  // 3mm thick Nomex honeycomb for SBS GEMs;
54  sbs->mReadoutSupportMaterial = "GemNomex";
55  sbs->mReadoutSupportThickness = 3.000;
56 
57  // FIXME: check on that!;
58  sbs->mGasMixture = "arco27030";
59 
60  sbs->mEntranceRegionLength = 3.000;
61  sbs->mDriftRegionLength = 3.000;
62  // Assume triple GEM layout;
63  sbs->mFirstTransferRegionLength = 2.000;
64  sbs->mSecondTransferRegionLength = 2.000;
65  sbs->mInductionRegionLength = 2.000;
66 
67  for(unsigned fb=0; fb<2; fb++) {
68  GemGeoParData *fbgt = new GemGeoParData(fb ? "BGT" : "FGT", _VERSION_, _SUBVERSION_);
69 
70  if (fb) {
71  TGeoRotation *rw = new TGeoRotation();
72  rw->RotateY(180);
73 
74  fbgt->SetTopVolumeTransformation(new TGeoCombiTrans(0.0, 0.0, 0.0, rw));
75  } //if
76 
77 #ifdef _TEST_VERSION_
78  fbgt->SetTestGeometryFlag();
79 #endif
80 
81 #ifdef _WITH_MOUNTING_RINGS_
82  fbgt->WithMountingRings();
83 
84  fbgt->mMountingRingBeamLineThickness = 5.00;
85  fbgt->mMountingRingRadialThickness = 5.00;
86  //fbgt->mMountingRingRadialOffset = 3.00;
87 #endif
88 
89  // FIXME: for now just make them fit the conical vacuum pipe;
90  fbgt->AddWheel(sbs, 12, 370. + 65, 1030.0);
91  fbgt->AddWheel(sbs, 12, 370. + 65, 1080.0);
92  fbgt->AddWheel(sbs, 12, 370. + 65, 1130.0);
93 
94  fbgt->AttachSourceFile("./fbgt.C");
95 
96  //
97  // Fine, at this point structure is completely defined -> code it in ROOT;
98  //
99 
100  // Some colorification, please;
101  fbgt->GetColorTable()->AddPatternMatch("FrameEdge", kGray);
102  fbgt->GetColorTable()->AddPatternMatch("EntranceWindow", kOrange);
103  fbgt->GetColorTable()->AddPatternMatch("ReadoutSupport", kOrange);
104 
105  fbgt->ConstructGeometry();
106  } //for fb
107 
108  // Yes, always exit;
109  exit(0);
110 }
111