* about the suitability of this software for any purpose. It is *
* provided "as is" without express or implied warranty. *
**************************************************************************/
-
/* $Id$ */
-
+/** @file AliFMD3.cxx
+ @author Christian Holm Christensen <cholm@nbi.dk>
+ @date Sun Mar 26 18:26:12 2006
+ @brief Concrete implementation of AliFMDDetector for FMD3
+*/
//____________________________________________________________________
//
-// Concrete implementation of AliFMDSubDetector
+// Concrete implementation of AliFMDDetector
//
-// This implements the geometry for FMD3
+// This implements the geometry for FMD3.
+// This has 2 rings.
+// The support of the FMD3 is a carbon-fibre cone, attached to the ITS
+// support via flanges. The cone also supports the beam-pipe.
+// The support is a special cone of carbon-fibre made by a Danish
+// Yacht company.
//
-#ifndef ROOT_TVirtualMC
-# include <TVirtualMC.h>
-#endif
-#ifndef ROOT_TCONS
-# include <TCONS.h>
-#endif
-#ifndef ROOT_TNode
-# include <TNode.h>
-#endif
-#ifndef ROOT_TList
-# include <TList.h>
-#endif
-#ifndef ALIFMD3_H
-# include "AliFMD3.h"
-#endif
-#ifndef ALILOG_H
-# include "AliLog.h"
-#endif
-#ifndef ALIFMDRING_H
-# include "AliFMDRing.h"
-#endif
-#include <iostream>
-//____________________________________________________________________
-ClassImp(AliFMD3);
+#include <TMath.h> // ROOT_TMath
-//____________________________________________________________________
-AliFMD3::AliFMD3()
- : AliFMDSubDetector(3),
- fVolumeId(0),
- fDz(0)
-{
- // Default constructor for the FMD3 sub-detector
-}
-
-
-//____________________________________________________________________
-AliFMD3::~AliFMD3()
-{
- // Destructor - does nothing
-}
+#include "AliFMD3.h" // ALIFMD3_H
+#include "AliFMDDebug.h" // ALIFMDDEBUG_H ALILOG_H
+#include "AliFMDRing.h" // ALIFMDRING_H
+#include <TVector3.h>
+//====================================================================
+ClassImp(AliFMD3)
+#if 0
+ ; // This is here to keep Emacs for indenting the next line
+#endif
//____________________________________________________________________
-void
-AliFMD3::SetupGeometry(Int_t airId, Int_t kaptionId)
+AliFMD3::AliFMD3(AliFMDRing* inner, AliFMDRing* outer)
+ : AliFMDDetector(3, inner, outer),
+ // fNoseZ(16.54667)
+ fNoseZ(18.13 - inner->GetModuleDepth()-inner->GetModuleSpacing()/2), // From drawing
+ fFlangeDepth(0),
+ fFlangeHighR(49.25), // From drawing
+ fFlangeLength(0),
+ fFlangeWidth(6), // From drawing
+ fFiducialRadius(.25),
+ fConeInnerAngle(0),
+ fConeOuterAngle(0),
+ fHoleOffset(6.9), // From drawing
+ fHoleDepth(2), // What's needed
+ fHoleLength(31.2), // From drawing
+ fHoleLowWidth(3), // 4), // What's needed
+ fHoleHighWidth(18.5), // 17.5), // 18), // What's needed
+ fBoltLength(1), // Guessed
+ fBoltRadius(0.15), // Estimate
+ fConeRadii(6),
+ fFiducialHoles(4)
{
- // Setup the FMD3 sub-detector geometry
- //
- // Parameters:
- //
- // airId Id # of the Air medium
- // kaptionId Id # of the Aluminium medium
- //
- fInnerHoneyLowR = fInner->GetLowR() + 1;
- fInnerHoneyHighR = fInner->GetHighR() + 1;
- fOuterHoneyLowR = fOuter->GetLowR() + 1;
- fOuterHoneyHighR = fOuter->GetHighR() + 1;
+ // Constructor.
+ Double_t off = 0; // -0.39615-0.10185; // -0.25;
+ if (off != 0)
+ AliWarning(Form("Z position of FMD3 rings may be off by %fcm!", off));
- CalculateDz();
- Double_t par[3];
- par[0] = fInner->GetLowR();
- par[1] = fOuterHoneyHighR;
- par[2] = fDz;
- fVolumeId = gMC->Gsvolu("FMD3", "TUBE", airId, par, 3);
+ SetInnerZ(-62.8+off); // By design
+ SetOuterZ(-75.2+off); // By design
- gMC->Matrix(fRotationId, 90, 0, 90, 90, 0, 0);
- //0, 180, 90, 90, 180, 0);
+ SetInnerHoneyLowR(4.18207); // From drawing
+ SetInnerHoneyHighR(19.74922); // From drawing
+ SetOuterHoneyLowR(13.4776); // From drawing
+ SetOuterHoneyHighR(31.01964); // From drawing
+
+ // These are from the drawings
+ fConeRadii.Add(new TVector3( 0, 5.55, 6.25));
+ fConeRadii.Add(new TVector3( 2.35, 5.55, 6.25));
+ fConeRadii.Add(new TVector3( 2.9935, 5.55, 6.88479));
+ fConeRadii.Add(new TVector3(28.9435, 31.50, 32.75850));
+ fConeRadii.Add(new TVector3(29.5, 31.50, 33.4));
+ fConeRadii.Add(new TVector3(30.9, 31.50, 33.4));
- AliFMDSubDetector::SetupGeometry(airId, kaptionId);
+ // These are from the drawings
+ fFiducialHoles.Add(new TVector2(29.666, 32.495));
+ fFiducialHoles.Add(new TVector2(31.082, 33.910));
+ fFiducialHoles.Add(new TVector2(32.674, 35.503));
+ fFiducialHoles.Add(new TVector2(33.403, 34.818));
}
//____________________________________________________________________
-void
-AliFMD3::Geometry(const char* mother, Int_t pbRotId,
- Int_t idRotId, Double_t z)
+void
+AliFMD3::Init()
{
- // Position the FMD3 sub-detector volume
- //
- // Parameters
- //
- // mother name of the mother volume
- // pbRotId Printboard roation matrix ID
- // idRotId Identity rotation matrix ID
- // z Z position (not really used here, but passed down)
- //
- z = fInnerZ - fDz;
- gMC->Gspos("FMD3", 1, mother, 0, 0, z, fRotationId);
+ // Initialize
+ AliFMDDetector::Init();
+ // TVector3& v0 = *(static_cast<TVector3*>(fConeRadii.At(0)));
+ TVector3& v1 = *(static_cast<TVector3*>(fConeRadii.At(1)));
+ TVector3& v2 = *(static_cast<TVector3*>(fConeRadii.At(2)));
+ TVector3& v3 = *(static_cast<TVector3*>(fConeRadii.At(3)));
+ TVector3& v4 = *(static_cast<TVector3*>(fConeRadii.At(4)));
+ TVector3& v5 = *(static_cast<TVector3*>(fConeRadii.At(5)));
- AliFMDSubDetector::Geometry("FMD3", pbRotId, idRotId, z);
+ fFlangeDepth = v5.X() - v4.X();
+ fFlangeLength = fFlangeHighR - v5.Y();
+
+ fConeInnerAngle = TMath::ATan2(v4.Z()-v1.Z(), v4.X()-v1.X());
+ fConeOuterAngle = TMath::ATan2(v3.Y()-v2.Y(), v3.X()-v2.X());
+
+#if 0
+ Double_t hz1 = -fHoleOffset+fInnerZ+fNoseZ;
+ fHoleLength = TMath::Sqrt(TMath::Power(v4.Z()-ConeR(hz1),2) +
+ TMath::Power(v4.X()-fHoleOffset,2));
+#endif
}
-
//____________________________________________________________________
-void
-AliFMD3::SimpleGeometry(TList* nodes,
- TNode* mother,
- Int_t colour,
- Double_t zMother)
+Double_t
+AliFMD3::ConeR(Double_t z, Option_t* opt) const
{
- // We need to get the equation for the line that connects the
- // outer circumfrences of the two rings, as well as for the line
- // that connects the inner curcumfrences, so that we can project to
- // where the honey-comb actually ends.
- //
- // we have
- //
- // y = a * x + b
- // b = y - a * x;
- //
- // For the outer line, we have the two equations
- //
- // fOuterHoneyHighR = a * x1 + b;
- // fInnerHoneyHighR = a * x2 + b;
- //
- // where
- //
- // x1 = (fOuterZ + fOuter->fSiThickness + fOuter->fPrintboardThickness
- // + fOuter->fLegLength + fModuleSpacing)
- // = fInner - fDz + fHoneycombThickness
- // x2 = (fInnerZ + fInner->fSiThickness + fInner->fPrintboardThickness
- // + fInner->fLegLength + fModuleSpacing)
- //
- // and
- //
- // a = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2)
- //
- //
- CalculateDz();
-#if 1
- Double_t x1 = (fOuterZ - (fOuter->GetSiThickness()
- + fOuter->GetPrintboardThickness()
- + fOuter->GetLegLength()
- + fOuter->GetModuleSpacing()));
- Double_t x2 = (fInnerZ - (fInner->GetSiThickness()
- + fInner->GetPrintboardThickness()
- + fInner->GetLegLength()
- + fInner->GetModuleSpacing()));
- Double_t ao = 0;
- Double_t ao1 = (fOuterHoneyHighR - fInnerHoneyHighR) / (x1 - x2);
- Double_t ao2 = ((fOuter->GetHighR() - fInner->GetHighR())
- / (fOuterZ - fInnerZ));
- Double_t bo = 0;
- if (ao2 > ao1) {
- std::cout << "Wafer determinds the size" << std::endl;
- ao = ao2;
- bo = fInner->GetHighR() - ao * fInnerZ;
+ // Calculate the cone radius at Z
+ // TVector3& v0 = *(static_cast<TVector3*>(fConeRadii.At(0)));
+ TVector3& v1 = *(static_cast<TVector3*>(fConeRadii.At(1)));
+ TVector3& v2 = *(static_cast<TVector3*>(fConeRadii.At(2)));
+ TVector3& v3 = *(static_cast<TVector3*>(fConeRadii.At(3)));
+ TVector3& v4 = *(static_cast<TVector3*>(fConeRadii.At(4)));
+ TVector3& v5 = *(static_cast<TVector3*>(fConeRadii.At(5)));
+
+ if (z > fInnerZ + fNoseZ) {
+ AliWarning(Form("z=%lf is before start of cone %lf", z, fInnerZ + fNoseZ));
+ return -1;
}
- else {
- ao = ao1;
- bo = fOuterHoneyHighR - ao * x1;
+ if (z < fInnerZ + fNoseZ - v5.Z()) {
+ AliWarning(Form("z=%lf is after end of cone %lf", z,
+ fInnerZ + fNoseZ - v5.Z()));
+ return -1;
}
+ Double_t rz = -(z-fInnerZ-fNoseZ);
+ Bool_t inner = opt[0] == 'I' || opt[1] == 'i';
+ if (inner && rz <= v2.X()) return v2.Y();
+ if (!inner && rz <= v1.X()) return v1.Z();
+ if (inner && rz > v3.X()) return v3.Y();
+ if (!inner && rz > v4.X()) return v4.Z();
- Double_t y1o = ao * (fInnerZ - 2 * fDz) + bo;
- Double_t y2o = ao * fInnerZ + bo;
-#endif
- // We probably need to make a PCON here.
- TShape* shape = new TCONS("FMD3", "FMD3", "", fDz,
- fOuter->GetLowR(), y1o, /* fOuterHoneyHighR, */
- fInner->GetLowR(), y2o, /* fInnerHoneyHighR, */
- 0, 360);
- mother->cd();
- zMother = fInnerZ - fDz;
- TNode* node = new TNode("FMD3", "FMD3", shape, 0, 0, zMother, 0);
- node->SetVisibility(0);
- nodes->Add(node);
- AliFMDSubDetector::SimpleGeometry(nodes, node, colour, zMother);
+ rz -= (inner ? v2.X() : v1.X());
+ Double_t sr = (inner ? v2.Y() : v1.Z());
+ Double_t ang = (inner ? fConeInnerAngle : fConeOuterAngle);
+ return sr + rz * TMath::Tan(ang);
}
-//____________________________________________________________________
-void
-AliFMD3::CalculateDz()
-{
- if (fDz > 0) return;
- fDz = (TMath::Abs(fInnerZ - fOuterZ)
- + fOuter->GetSiThickness()
- + fOuter->GetPrintboardThickness()
- + fOuter->GetLegLength()
- + fOuter->GetModuleSpacing()
- + fHoneycombThickness) / 2;
-}
//____________________________________________________________________
//
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff