// Authors:
// F. Manso
// A. Morsch
+// R. Tieulent
//-------------------------------------------------------------------------
// from https://twiki.cern.ch/twiki/pub/ALICE/MinutesMecanicsIntegration/Minutes_MFT_meeting_BeamPipe_2013_05_13.pdf
//------------------------------------------------ Pipe version 4.6 june 2013 -------------------------------------
- Float_t fztube1=fZ2;
- Float_t fztube2=fZ2+(-15.53-2.0);
- Float_t fztube3=fztube2+(-1.3);
- Float_t fztube4=fztube3+(-1.3-3.8);
- Float_t fztube5=fztube4+(-4.0-3.8);
- Float_t fzadapt=fztube5+(-1.3);
+ Float_t fBellowLength = 3.72;
+ Float_t fFirstConeLength = 1.3;
+ Float_t fCylinderBeforeAfterBellowsLength = 1.34;
+ Float_t fDistanceBetweenBellows = 4.08;
+ Float_t fAluSmallDiamLength = 15.53 + 2.0;
+ Float_t fBellowSectionOuterRadius = 2.15;
+ Float_t fBellowOuterRadius = 3.0;
+
+
+ Float_t fztube1=fZ2; // z of Be - Al jonction on the C-side
+ Float_t fztube2=fZ2-fAluSmallDiamLength; // z of end of small diameter part (beginning of first cone before the bellow
+ Float_t fztube3=fztube2+(-fFirstConeLength); // z of end of conical section
+ Float_t fztube4=fztube3+(-fCylinderBeforeAfterBellowsLength-fBellowLength);
+ Float_t fztube5=fztube4+(-fDistanceBetweenBellows-fBellowLength);
+ Float_t fzadapt=fztube5+(-fCylinderBeforeAfterBellowsLength);
//---------------- Be pipe around the IP ----------
TGeoPcon* tube0 = new TGeoPcon(0., 360., 2);
//---------------- First Al tube ------------------
TGeoPcon* tube1 = new TGeoPcon(0., 360., 2);
tube1->DefineSection(0,fztube1, fRmax-fBe,fRmax);
- tube1->DefineSection(1,fztube1+(-15.53-2.0),fRmax-fBe,fRmax);
+ tube1->DefineSection(1,fztube1-fAluSmallDiamLength,fRmax-fBe,fRmax);
TGeoVolume* votube1 = new TGeoVolume("votube1",tube1,kMedAlu2219);
votube1->SetLineColor(kBlue);
top->AddNode(votube1,1,new TGeoTranslation(0., 0., 0.));
TGeoPcon* tube1vide = new TGeoPcon(0., 360., 2);
tube1vide->DefineSection(0,fZ2, 0.,fRmax-fBe);
- tube1vide->DefineSection(1,fZ2+(-15.53-2.0), 0.,fRmax-fBe);
+ tube1vide->DefineSection(1,fZ2-fAluSmallDiamLength, 0.,fRmax-fBe);
TGeoVolume* votube1vide = new TGeoVolume("votube1vide",tube1vide,kMedVac);
votube1vide->SetVisibility(0);votube1vide->SetLineColor(kGreen);
top->AddNode(votube1vide,1,new TGeoTranslation(0., 0., 0.));
//----------- Conical Al tube before bellows ----------
TGeoPcon* tube2 = new TGeoPcon(0., 360., 2);
tube2->DefineSection(0,fztube2, fRmax-fBe,fRmax);
- tube2->DefineSection(1,fztube2+(-1.3),2.15-fBe,2.15);
+ tube2->DefineSection(1,fztube2-fFirstConeLength,fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
TGeoVolume* votube2 = new TGeoVolume("votube2",tube2,kMedAlu2219);
votube2->SetLineColor(kBlue);
top->AddNode(votube2,1,new TGeoTranslation(0., 0., 0.));
TGeoPcon* tube2vide = new TGeoPcon(0., 360., 2);
tube2vide->DefineSection(0,fztube2, 0., fRmax-fBe);
- tube2vide->DefineSection(1,fztube2+(-1.3), 0., 2.15-fBe);
+ tube2vide->DefineSection(1,fztube2-fFirstConeLength, 0., fBellowSectionOuterRadius-fBe);
TGeoVolume* votube2vide = new TGeoVolume("votube2vide",tube2vide,kMedVac);
votube2vide->SetVisibility(0);votube2vide->SetLineColor(kGreen);
top->AddNode(votube2vide,1,new TGeoTranslation(0., 0., 0.));
//---------- Al tube before first bellow ----------
TGeoPcon* tube3 = new TGeoPcon(0., 360., 2);
- tube3->DefineSection(0,fztube3, 2.15-fBe,2.15);
- tube3->DefineSection(1,fztube3+(-1.3),2.15-fBe,2.15);
+ tube3->DefineSection(0,fztube3, fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
+ tube3->DefineSection(1,fztube3-fCylinderBeforeAfterBellowsLength,fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
TGeoVolume* votube3 = new TGeoVolume("votube3",tube3,kMedAlu2219);
votube3->SetLineColor(kBlue);
top->AddNode(votube3,1,new TGeoTranslation(0., 0., 0.));
//-------------------------------------------------
//---------- Al tube between the bellows ----------
TGeoPcon* tube4 = new TGeoPcon(0., 360., 2);
- tube4->DefineSection(0,fztube4, 2.15-fBe,2.15);
- tube4->DefineSection(1,fztube4+(-4.0),2.15-fBe,2.15);
+ tube4->DefineSection(0,fztube4, fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
+ tube4->DefineSection(1,fztube4-fDistanceBetweenBellows,fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
TGeoVolume* votube4 = new TGeoVolume("votube4",tube4,kMedAlu2219);
votube4->SetLineColor(kBlue);
top->AddNode(votube4,1,new TGeoTranslation(0., 0., 0.));
//-------------------------------------------------
//-------- Al tube after the second bellow --------
TGeoPcon* tube5 = new TGeoPcon(0., 360., 2);
- tube5->DefineSection(0,fztube5, 2.15-fBe,2.15);
- tube5->DefineSection(1,fztube5+(-1.3),2.15-fBe,2.15);
+ tube5->DefineSection(0,fztube5, fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
+ tube5->DefineSection(1,fztube5-fCylinderBeforeAfterBellowsLength,fBellowSectionOuterRadius-fBe,fBellowSectionOuterRadius);
TGeoVolume* votube5 = new TGeoVolume("votube5",tube5,kMedAlu2219);
votube5->SetLineColor(kBlue);
top->AddNode(votube5,1,new TGeoTranslation(0., 0., 0.));
//-------------------------------------------------
//---- One empty tube inside tube3, tube4, tube5 and bellows -----
TGeoPcon* tube345vide = new TGeoPcon(0., 360., 2);
- tube345vide->DefineSection(0,fztube3, 0., 2.15-fBe);
- tube345vide->DefineSection(1,fztube5+(-1.3), 0., 2.15-fBe);
+ tube345vide->DefineSection(0,fztube3, 0., fBellowSectionOuterRadius-fBe);
+ tube345vide->DefineSection(1,fztube5-fCylinderBeforeAfterBellowsLength, 0., fBellowSectionOuterRadius-fBe);
TGeoVolume* votube345vide = new TGeoVolume("votube345vide",tube345vide,kMedVac);
votube345vide->SetVisibility(0);votube345vide->SetLineColor(kGreen);
top->AddNode(votube345vide,1,new TGeoTranslation(0., 0., 0.));
//----------- 15?? Conical adaptator + flange ----------
TGeoPcon* adaptator = new TGeoPcon(0., 360., 4);
- adaptator->DefineSection(0,fzadapt, 2.15-fBe, 2.15);
+ adaptator->DefineSection(0,fzadapt, fBellowSectionOuterRadius-fBe, fBellowSectionOuterRadius);
adaptator->DefineSection(1,fzadapt+(-3.17), 3.0-fBe, 3.0);
adaptator->DefineSection(2,fzadapt+(-3.17), 3.0-fBe, 4.3);
adaptator->DefineSection(3,fzadapt+(-3.17-1.4), 3.0-fBe ,4.3);
// ------------------ First Bellow --------------------
- TGeoVolume* vobellows1 = MakeBellow("bellows1", 6, 2.15-fBe, 3.0, 3.8, plieradius ,0.03);
- top->AddNode(vobellows1, 1, new TGeoTranslation(0., 0., fztube3+(-1.3-3.8/2. -0.31 +0.08)));
- // Comments: removing 1/2 plie (see MakeBellow): 0.31= 2*0.17-0.03 and 0.08: free space
-
- // small tube of the bellow 1 to cover the 0.08cm remaining space
- TGeoPcon* bellowtube1 = new TGeoPcon(0., 360., 2);
- bellowtube1->DefineSection(0,fztube4+(0.08), 2.15-0.03,2.15);
- bellowtube1->DefineSection(1,fztube4,2.15-0.03,2.15);
- TGeoVolume* vobellowtube1 = new TGeoVolume("vobellowtube1",bellowtube1,kMedAlu5083);
- vobellowtube1->SetLineColor(kGreen);
- top->AddNode(vobellowtube1,1,new TGeoTranslation(0., 0., 0.));
+ TGeoVolume* vobellows1 = MakeBellowCside("bellows1", 6, fBellowSectionOuterRadius-fBe, fBellowOuterRadius, fBellowLength, plieradius ,0.03);
+ top->AddNode(vobellows1, 1, new TGeoTranslation(0., 0., fztube3+(-fCylinderBeforeAfterBellowsLength-fBellowLength/2.-2.*plieradius)));
//------------------------------------------------------
// ------------------ Second Bellow --------------------
- TGeoVolume* vobellows2 = MakeBellow("bellows2", 6, 2.15-fBe, 3.0, 3.8, plieradius ,0.03);
- top->AddNode(vobellows2, 1, new TGeoTranslation(0., 0., fztube4+(-4.0-3.8/2. -0.31 +0.08)));
- // small tube of the bellow 1
- TGeoPcon* bellowtube2 = new TGeoPcon(0., 360., 2);
- bellowtube2->DefineSection(0,fztube5+(0.08), 2.15-0.03,2.15);
- bellowtube2->DefineSection(1,fztube5,2.15-0.03,2.15);
- TGeoVolume* vobellowtube2 = new TGeoVolume("vobellowtube2",bellowtube2,kMedAlu5083);
- vobellowtube2->SetLineColor(kGreen);
- top->AddNode(vobellowtube2,1,new TGeoTranslation(0., 0., 0.));
+ TGeoVolume* vobellows2 = MakeBellowCside("bellows2", 6, fBellowSectionOuterRadius-fBe, fBellowOuterRadius, fBellowLength, plieradius ,0.03);
+ top->AddNode(vobellows2, 1, new TGeoTranslation(0., 0., fztube4+(-fDistanceBetweenBellows-fBellowLength/2. -2.*plieradius)));
//-----------------------------------------------------
- /////////////////////////// END NEW BEAM PIPE GEOMETRY fOR MFT /////////////////////////////
+
+
+ ///////////////////////////////////
+ // Beam Pipe support //
+ // version 4.6 //
+ ///////////////////////////////////
+
+ TGeoBBox * carbonSkinVert = new TGeoBBox(13.375/2.,0.45/2.,0.05/2.);
+
+
+
+ ///////////// END NEW BEAM PIPE GEOMETRY fOR MFT ////////////////////
return voBellow;
}
+TGeoVolume* AliPIPEv4::MakeBellowCside(const char* ext, Int_t nc, Float_t rMin, Float_t rMax, Float_t dU, Float_t rPlie, Float_t dPlie)
+{
+ // nc Number of convolution
+ // rMin Inner radius of the bellow
+ // rMax Outer radius of the bellow
+ // dU Undulation length
+ // rPlie Plie radius
+ // dPlie Plie thickness
+ const TGeoMedium* kMedVac = gGeoManager->GetMedium("PIPE_VACUUM");
+ //const TGeoMedium* kMedSteel = gGeoManager->GetMedium("PIPE_INOX");
+ const TGeoMedium* kMedAlu5083 = gGeoManager->GetMedium("PIPE_AA5083"); //fm
+
+ char name[64], nameA[64], nameB[64], bools[64];
+ snprintf(name, 64, "%sBellowUS", ext);
+ TGeoVolume* voBellow = new TGeoVolume(name, new TGeoTube(rMin, rMax, dU/2.), kMedVac);
+ //
+ // Upper part of the undulation
+ //
+ TGeoTorus* shPlieTorusU = new TGeoTorus(rMax - rPlie, rPlie - dPlie, rPlie);
+ snprintf(nameA, 64, "%sTorusU", ext);
+ shPlieTorusU->SetName(nameA);
+ TGeoTube* shPlieTubeU = new TGeoTube (rMax - rPlie, rMax, rPlie);
+ snprintf(nameB, 64, "%sTubeU", ext);
+ shPlieTubeU->SetName(nameB);
+ snprintf(name, 64, "%sUpperPlie", ext);
+ snprintf(bools, 64, "%s*%s", nameA, nameB);
+ TGeoCompositeShape* shUpperPlie = new TGeoCompositeShape(name, bools);
+
+ TGeoVolume* voWiggleU = new TGeoVolume(name, shUpperPlie, kMedAlu5083);
+ voWiggleU->SetLineColor(kOrange); // fm
+
+ // First Lower part of the undulation
+ TGeoTorus* shPlieTorusL = new TGeoTorus(rMin + rPlie, rPlie - dPlie, rPlie);
+ snprintf(nameA, 64, "%sTorusL", ext);
+ shPlieTorusL->SetName(nameA);
+ TGeoTranslation *t1 = new TGeoTranslation("t1",0,0,-rPlie/2.);
+ t1->RegisterYourself();
+
+ TGeoTube* shPlieTubeL = new TGeoTube (rMin, rMin + rPlie, rPlie/2.);
+ snprintf(nameB, 64, "%sTubeL", ext);
+ shPlieTubeL->SetName(nameB);
+ snprintf(name, 64, "%sLowerPlie", ext);
+ snprintf(bools, 64, "%s*%s:t1", nameA, nameB);
+ TGeoCompositeShape* shLowerPlie1 = new TGeoCompositeShape(name, bools);
+
+ TGeoVolume* voWiggleL1 = new TGeoVolume(name, shLowerPlie1, kMedAlu5083);
+ voWiggleL1->SetLineColor(kOrange); // fm
+
+ // Second Lower part of the undulation
+ TGeoTranslation *t2 = new TGeoTranslation("t2",0,0,rPlie/2.);
+ t2->RegisterYourself();
+
+ snprintf(bools, 64, "%s*%s:t2", nameA, nameB);
+ TGeoCompositeShape* shLowerPlie2 = new TGeoCompositeShape(name, bools);
+
+ TGeoVolume* voWiggleL2 = new TGeoVolume(name, shLowerPlie2, kMedAlu5083);
+ voWiggleL2->SetLineColor(kOrange); // fm
+
+ // Connection between upper and lower part of undulation
+ snprintf(name, 64, "%sPlieConn1", ext);
+ TGeoVolume* voWiggleC1 = new TGeoVolume(name, new TGeoTube(rMin + rPlie, rMax - rPlie, dPlie/2.), kMedAlu5083);
+ voWiggleC1->SetLineColor(kOrange); // fm
+
+ // One wiggle
+ Float_t dz = rPlie - dPlie / 2.;
+ Float_t z0 = 2.*rPlie;
+ snprintf(name, 64, "%sWiggle", ext);
+ TGeoVolumeAssembly* asWiggle = new TGeoVolumeAssembly(name);
+
+ asWiggle->AddNode(voWiggleL1 , 1 , new TGeoTranslation(0., 0., z0));
+ z0 -= dz;
+ asWiggle->AddNode(voWiggleC1, 1 , new TGeoTranslation(0., 0., z0));
+ z0 -= dz;
+ asWiggle->AddNode(voWiggleU, 1 , new TGeoTranslation(0., 0., z0));
+ z0 -= dz;
+ asWiggle->AddNode(voWiggleC1, 2 , new TGeoTranslation(0., 0., z0));
+ z0 -= dz;
+ asWiggle->AddNode(voWiggleL2 , 1 , new TGeoTranslation(0., 0., z0));
+ // Positioning of the volumes
+ z0 = + dU / 2.;
+ Float_t zsh = 4. * dz;
+ for (Int_t iw = 0; iw < nc; iw++) {
+ Float_t zpos = z0 - iw * zsh;
+ voBellow->AddNode(asWiggle, iw + 1, new TGeoTranslation(0., 0., zpos));
+
+ }
+ return voBellow;
+}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff