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bugfix in copy constructor
[u/mrichter/AliRoot.git] / ITS / AliITSv11GeometrySDD.cxx
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db486a6e 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
16//*************************************************************************
17// SDD geometry, based on ROOT geometrical modeler
18//
19// Ludovic Gaudichet (Ludovic.Gaudichet@to.infn.it)
20//*************************************************************************
21
22
23#include <stdio.h>
24#include <stdlib.h>
25
26// General Root includes
27#include <Riostream.h>
28#include <TMath.h>
29
30// Root Geometry includes
31#include <TGeoManager.h>
32#include <TGeoVolume.h>
33#include <TGeoPcon.h>
34#include <TGeoCone.h>
35#include <TGeoTube.h>
36#include <TGeoArb8.h>
37#include <TGeoCompositeShape.h>
38#include <TGeoMatrix.h>
39#include <TGeoMaterial.h>
40#include <TGeoMedium.h>
41
42#include "AliITSv11Geometry.h"
43#include "AliITSv11GeometrySDD.h"
44
45
46
47ClassImp(AliITSv11GeometrySDD)
48
49
50AliITSv11GeometrySDD::AliITSv11GeometrySDD():AliITSv11Geometry() {
51 fAddOnlyLadder3 = -1;
52 fAddOnlyLadder4 = -1;
53 fAddOnlySegment = 0;
54 SetGeomParameters();
55};
56//----------------------------------------------------------------------
57AliITSv11GeometrySDD::AliITSv11GeometrySDD(Int_t debug):AliITSv11Geometry(debug) {
58 fAddOnlyLadder3 = -1;
59 fAddOnlyLadder4 = -1;
60 fAddOnlySegment = 0;
61 SetGeomParameters();
62};
63//----------------------------------------------------------------------
64void AliITSv11GeometrySDD::SetGeomParameters() {
65
66 fSegmentLength = 37.2*2*fgkmm;
67 fLadderWidth = 50.0*fgkmm;
68 fLadderHeight = 30.0*fgkmm;
69 fLadderBeamRadius = 0.6*fgkmm;
70 fLadderLa = 3.*fgkmm;
71 fLadderHa = 0.6*fgkmm; //total pifometer
72 fLadderLb = 3.7*fgkmm;
73 fLadderHb = 0.6*fgkmm; //total pifometer
74 fLadderl = 0.25*fgkmm;
75
76 fBottomBeamAngle = 56.5;
77 fBeamSidePhi = 65;
78
79 fWaferThickness = 0.3*fgkmm;
80 fWaferWidth = 72.5*fgkmm;
81 fWaferLength = 87.6*fgkmm;
82
83 fHybridLength = (37.2*2-15)*fgkmm; //total pifometer
84 fHybridWidth = 35*fgkmm; //total pifometer
85
86 fLadWaferSep = 2*fgkmm;
87 fPinSuppWidth = 2.5*fgkmm; // pifometer
88 fPinSuppHeight = 2.*fgkmm; // pifometer
89 fPinSuppRmax = 2.5/2.*fgkmm;
90 fPinR = 1.5/2.*fgkmm;
91 fPinSuppLength = 5.*fgkmm;
92 fPinSuppThickness = 0.5*fgkmm;
93 fPinSuppConeAngle = 4;
94
95 fLay3Rmin = 130.*fgkmm; //not min! Rmin virtual tube
96 fLay3Rmax = 190.*fgkmm; //not min! Rmax virtual tube
97 fLay3Length = (524.+0.)*fgkmm; // ladder+supporting rings (length of the virtual tube)
98 fLay3LadderLength = 524.*fgkmm;
99 fLay3DetShortRadius = 146.0*fgkmm;
100 fLay3DetLongRadius = 152.0*fgkmm;
101 fLay3LaddShortRadius = fLay3DetShortRadius-fLadderBeamRadius+(8-1)*fgkmm; // radius from the center to the CF ladder
102 fLay3LaddLongRadius = fLay3DetLongRadius-fLadderBeamRadius+(8-1)*fgkmm; // radius from the center to the CF ladder
103 fLay3LaddTopCornerEnd = 15.6*fgkmm;
104 fLay3Ndet = 6;
105 fLay3Nladd = 14;
106
107 fLay4Rmin = 220.*fgkmm; //not min! Rmin virtual tube
108 fLay4Rmax = 290.*fgkmm; //not min! Rmax virtual tube
109 fLay4Length = (671.+0.)*fgkmm; // ladder+supporting rings (length of the virtual tube)
110 fLay4LadderLength = 671.*fgkmm;
111 fLay4DetShortRadius = 235.0*fgkmm;
112 fLay4DetLongRadius = 240.5*fgkmm;
113 fLay4LaddShortRadius = fLay4DetShortRadius-fLadderBeamRadius+(8-1)*fgkmm; // radius from the center to the CF ladder
114 fLay4LaddLongRadius = fLay4DetLongRadius-fLadderBeamRadius+(8-1)*fgkmm; // radius from the center to the CF ladder
115 fLay4LaddTopCornerEnd = 15.6*fgkmm;
116 fLay4Ndet = 8;
117 fLay4Nladd = 22;
118
119 for (Int_t i=0; i<fLay3Ndet; i++)
120 fLay3sensorZPos[i] = -fSegmentLength*fLay3Ndet/2.+fSegmentLength/2.+i*fSegmentLength;
121
122 for (Int_t i=0; i<fLay4Ndet; i++)
123 fLay4sensorZPos[i] = -fSegmentLength*fLay4Ndet/2.+fSegmentLength/2.+i*fSegmentLength;
124
125};
126//________________________________________________________________________
127TGeoCombiTrans *AliITSv11GeometrySDD::
128CreateCombiTrans(const char *name, Double_t dy, Double_t dz, Double_t dphi) {
129 //
130 // return the TGeoCombiTrans which make a translation in y and z
131 // and a rotation in phi in the global coord system
132 //
133
134 TGeoTranslation t1(dy*CosD(90.+dphi),dy*SinD(90.+dphi), dz);
135 TGeoRotation r1("",0.,0.,dphi);
136
137 TGeoCombiTrans *combiTrans1 = new TGeoCombiTrans(name);
138 combiTrans1->SetTranslation(t1);
139 combiTrans1->SetRotation(r1);
140 return combiTrans1;
141};
142//________________________________________________________________________
143void AliITSv11GeometrySDD::AddTranslationTotCombiTrans(TGeoCombiTrans* ct,
144 Double_t dx,
145 Double_t dy,
146 Double_t dz) {
147 // Add a dx,dy,dz translation to the initial TGeoCombiTrans
148 const Double_t *vect = ct->GetTranslation();
149 Double_t newVect[3];
150 newVect[0] = vect[0]+dx;
151 newVect[1] = vect[1]+dy;
152 newVect[2] = vect[2]+dz;
153 ct->SetTranslation(newVect);
154};
155//________________________________________________________________________
156void AliITSv11GeometrySDD::Layer3(TGeoVolume *Moth) {
157 // Insert the layer 3 in the mother volume. This is a virtual volume
158 // containing ladders of layer 3 and the supporting rings
159
160 TGeoTube *virtualLayer3Shape = new TGeoTube("ITSsddLayer3Shape",
161 fLay3Rmin,fLay3Rmax,fLay3Length*0.5);
162 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
163 TGeoVolume *virtualLayer3 = new TGeoVolume("ITSsddLayer3",
164 virtualLayer3Shape, airSDD);
165 TGeoVolume *lay3Ladder = CreateLay3Ladder();
166 TGeoVolume *lay3Detectors = CreateLay3Detectors();
167
168 Double_t dPhi = 360./fLay3Nladd;
169 Double_t detBoxThickness = fLadWaferSep + 2*fWaferThickness;
170 // placing virtual ladder and detectors volumes following ladder
171 // ordering convention
172 char rotName[20];
173 Int_t iLaddMin = 0;
174 Int_t iLaddMax = fLay3Nladd;
175 if ((fAddOnlyLadder3>=0)&&(fAddOnlyLadder3<fLay3Nladd)) {
176 iLaddMin = fAddOnlyLadder3;
177 iLaddMax = fAddOnlyLadder3+1;
178 }
179 for (Int_t iLadd = iLaddMin; iLadd < iLaddMax; iLadd++) {
180 sprintf(rotName, "ITSsddLay3Ladd%i",iLadd);
181 Double_t minRadiusLadBox = fLay3LaddShortRadius;
182 if (iLadd%2 != 0) minRadiusLadBox = fLay3LaddLongRadius;
183 minRadiusLadBox += ((TGeoBBox*)lay3Ladder->GetShape())->GetDY();
184
185 TGeoCombiTrans *ctLadd = CreateCombiTrans(rotName,minRadiusLadBox,0,
186 -90+iLadd*dPhi);
187 virtualLayer3->AddNode(lay3Ladder,iLadd,ctLadd);
188 sprintf(rotName, "ITSsddLay3DetBox%i",iLadd);
189 Double_t minRadiusDetBox = fLay3DetShortRadius;
190 if (iLadd%2 != 0) minRadiusDetBox = fLay3DetLongRadius;
191 minRadiusDetBox += detBoxThickness/2;
192 TGeoCombiTrans *ctDet = CreateCombiTrans(rotName, minRadiusDetBox,0,
193 -90+iLadd*dPhi);
194 virtualLayer3->AddNode(lay3Detectors, iLadd, ctDet);
195 }
196 virtualLayer3->SetVisibility(kFALSE);
197 Moth->AddNode(virtualLayer3,1,0);
198};
199//________________________________________________________________________
200TGeoVolume *AliITSv11GeometrySDD::CreateLay3Ladder() {
201 // return a box volume containing the CF ladder
202 TGeoVolume *laddSegment = CreateLadderSegment();
203 TGeoBBox *ladBox = new TGeoBBox("ITSsddLadBox",
204 ((TGeoBBox*)laddSegment->GetShape())->GetDX(),
205 ((TGeoBBox*)laddSegment->GetShape())->GetDY(),
206 //dX,dY = dX,dY of the segment
207 fLay3LadderLength/2);
208 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
209 TGeoVolume *virtualLadder = new TGeoVolume("ITSsddLadder",ladBox, airSDD);
210 Double_t segmentLength = fSegmentLength;
211 char transName[20];
212 // placing virtual ladder segment following detector ordering convention
213 //=======================================================================
214 Int_t iSegmentMin = 1;
215 Int_t iSegmentMax = fLay3Ndet;
216 if (fAddOnlySegment) {
217 iSegmentMin = fAddOnlySegment;
218 iSegmentMax = fAddOnlySegment;
219 }
220 for (Int_t iSegment = iSegmentMin; iSegment <= iSegmentMax; iSegment++ ) {
221 sprintf(transName, "ITSsddLay3LaddSeg%i", iSegment);
222 Double_t segmentPos = segmentLength*(3-iSegment) + segmentLength/2;
223 TGeoTranslation *segTr = new TGeoTranslation(transName,0,0,segmentPos);
224 virtualLadder->AddNode(laddSegment, iSegment, segTr);
225 }
226 // putting virtual volume corresponding to the end of ladder
227 //=======================================================================
228 Double_t endLength = (fLay3LadderLength-fLay3Ndet*fSegmentLength)/2.;
229 TGeoVolume *endLadder = CreateEndLadder( endLength );
230 TGeoTranslation *endTrZPos = new TGeoTranslation("ITSsddEndTrZPos",0,0,
231 fSegmentLength*(fLay3Ndet/2)+endLength/2.);
232 //Euler rotation : about Z, then new X, then new Z
233 TGeoRotation *endZNegRot = new TGeoRotation("",90, 180, -90);
234 TGeoCombiTrans *endTrZNeg = new TGeoCombiTrans(0,0,
235 -fSegmentLength*(fLay3Ndet/2)-endLength/2., endZNegRot);
236 if ((fAddOnlySegment==0)||(fAddOnlySegment==1))
237 virtualLadder->AddNode(endLadder, 1, endTrZPos);
238 if ((fAddOnlySegment==0)||(fAddOnlySegment==fLay3Ndet))
239 virtualLadder->AddNode(endLadder, 2, endTrZNeg);
240 virtualLadder->SetVisibility(kFALSE);
241 return virtualLadder;
242};
243//________________________________________________________________________
244TGeoArb8 *AliITSv11GeometrySDD::CreateLadderSide(Double_t dz,Double_t angle,
245 Double_t xSign,Double_t L, Double_t H, Double_t l) {
246 // Create one half of the V shape corner of CF ladder
247
248 TGeoArb8 *cfLaddSide = new TGeoArb8(dz);
249 cfLaddSide->SetVertex(0, 0,0);
250 cfLaddSide->SetVertex(1, 0, -H);
251 cfLaddSide->SetVertex(2,xSign*(L*TMath::Sin(angle)-l*TMath::Cos(angle)),
252 -L*TMath::Cos(angle)-l*TMath::Sin(angle));
253 cfLaddSide->SetVertex(3,xSign*L*TMath::Sin(angle),-L*TMath::Cos(angle));
254 cfLaddSide->SetVertex(4, 0,0);
255 cfLaddSide->SetVertex(5, 0, -H);
256 cfLaddSide->SetVertex(6,xSign*(L*TMath::Sin(angle)-l*TMath::Cos(angle)),
257 -L*TMath::Cos(angle)-l*TMath::Sin(angle));
258 cfLaddSide->SetVertex(7,xSign*L*TMath::Sin(angle),-L*TMath::Cos(angle));
259 return cfLaddSide;
260};
261//________________________________________________________________________
262void AliITSv11GeometrySDD::AddLadderCFstruct(Double_t dy, TGeoVolume* vol) {
263 // fill a volume (segment) with the CF structure of a ladder
264
265 TGeoMedium *carbonFiberLadderStruct = gGeoManager->GetMedium(
266 "ITSsddCarbonFiber");
267 Double_t segmentLength = fSegmentLength;
268 Double_t triangleHeight = fLadderHeight - fLadderBeamRadius;
269 Double_t halfTheta = TMath::ATan( 0.5*fLadderWidth/triangleHeight );
270 Double_t beta = (TMath::Pi()-2.*halfTheta)/4.;
271 Double_t alpha = TMath::Pi()*3./4. - halfTheta/2.;
272 Int_t colorCarbonFiber = 4;
273
274 //--- The 3 V shape corners of the Carbon Fiber Ladder
275 //--- the top V
276 TGeoArb8 *cfLaddTop1 = CreateLadderSide(segmentLength/2., halfTheta, -1,
277 fLadderLa, fLadderHa, fLadderl);
278 TGeoVolume *cfLaddTopVol1 = new TGeoVolume("ITSsddCFladdTopCornerVol1",
279 cfLaddTop1,carbonFiberLadderStruct);
280 cfLaddTopVol1->SetLineColor(colorCarbonFiber);
281 TGeoArb8 *cfLaddTop2 = CreateLadderSide(segmentLength/2., halfTheta, 1,
282 fLadderLa, fLadderHa, fLadderl);
283 TGeoVolume *cfLaddTopVol2 = new TGeoVolume("ITSsddCFladdTopCornerV2",
284 cfLaddTop2,carbonFiberLadderStruct);
285 cfLaddTopVol2->SetLineColor(colorCarbonFiber);
286 TGeoTranslation *trTop1 = new TGeoTranslation(0, fLadderHeight/2+dy, 0);
287 vol->AddNode(cfLaddTopVol1, 1, trTop1);
288 vol->AddNode(cfLaddTopVol2, 1, trTop1);
289 //--- the 2 side V
290 TGeoArb8 *cfLaddSide1 = CreateLadderSide( segmentLength/2., beta, -1,
291 fLadderLb, fLadderHb, fLadderl);
292 TGeoVolume *cfLaddSideVol1 = new TGeoVolume("ITSsddCFladdSideCornerV1",
293 cfLaddSide1,carbonFiberLadderStruct);
294 cfLaddSideVol1->SetLineColor(colorCarbonFiber);
295 TGeoArb8 *cfLaddSide2 = CreateLadderSide( segmentLength/2., beta, 1,
296 fLadderLb, fLadderHb, fLadderl);
297 TGeoVolume *cfLaddSideVol2 = new TGeoVolume("ITSsddCFladdSideCornerV2",
298 cfLaddSide2,carbonFiberLadderStruct);
299 cfLaddSideVol2->SetLineColor(colorCarbonFiber);
300
301 Double_t dYTranslation = fLadderHeight/2. -
302 0.5*fLadderWidth*TMath::Tan(beta) - fLadderBeamRadius;
303 // because center of the triangle doesn't correspond to virtual vol. center
304 Double_t distCenterSideDown = 0.5*fLadderWidth/TMath::Cos(beta);
305 TGeoCombiTrans *ctSideR = CreateCombiTrans("", distCenterSideDown, 0,
306 alpha*TMath::RadToDeg());
307 AddTranslationTotCombiTrans(ctSideR, 0, -dYTranslation+dy, 0);
308 TGeoCombiTrans *ctSideL = CreateCombiTrans("", distCenterSideDown,0,
309 -alpha*TMath::RadToDeg());
310 AddTranslationTotCombiTrans(ctSideL, 0, -dYTranslation+dy, 0);
311 vol->AddNode(cfLaddSideVol1, 1, ctSideR);
312 vol->AddNode(cfLaddSideVol2, 1, ctSideR);
313 vol->AddNode(cfLaddSideVol1, 2, ctSideL);
314 vol->AddNode(cfLaddSideVol2, 2, ctSideL);
315 //--- The beams
316 // Beams on the sides
317 Double_t beamPhiPrime = TMath::ASin(1./TMath::Sqrt( (1+TMath::Sin(2*beta)*
318 TMath::Sin(2*beta)/(TanD(fBeamSidePhi)*TanD(fBeamSidePhi))) ));
319 if(GetDebug(1)) cout<<"Phi prime = "<<beamPhiPrime*TMath::RadToDeg()<<endl;
320 Double_t beamLength = TMath::Sqrt( fLadderHeight*fLadderHeight/
321 (TMath::Sin(beamPhiPrime)*TMath::Sin(beamPhiPrime))
322 +fLadderWidth*fLadderWidth/4.)-fLadderLa/2-fLadderLb/2;
323 TGeoTubeSeg *sideBeam = new TGeoTubeSeg(0,fLadderBeamRadius,beamLength/2.,
324 0, 180);
325 TGeoVolume *cfSideBeamVol = new TGeoVolume("ITSsddCFSideBeamVol", sideBeam,
326 carbonFiberLadderStruct);
327 cfSideBeamVol->SetLineColor(colorCarbonFiber);
328 //Euler rotation : about Z, then new X, then new Z
329 TGeoRotation *beamRot1 = new TGeoRotation("",90-2.*beta*TMath::RadToDeg(),
330 -beamPhiPrime*TMath::RadToDeg(),-90);
331 TGeoCombiTrans *beamTransf1 = new TGeoCombiTrans(0.5*triangleHeight*
332 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,-3*segmentLength/8,beamRot1);
333 TGeoCombiTrans *beamTransf2 = new TGeoCombiTrans(0.5*triangleHeight*
334 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,segmentLength/8,beamRot1);
335 TGeoRotation *beamRot2 = new TGeoRotation("",90-2.*beta*TMath::RadToDeg(),
336 beamPhiPrime*TMath::RadToDeg(), -90);
337 TGeoCombiTrans *beamTransf3 = new TGeoCombiTrans(0.5*triangleHeight*
338 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,-segmentLength/8,beamRot2);
339 TGeoCombiTrans *beamTransf4 = new TGeoCombiTrans(0.5*triangleHeight*
340 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,3*segmentLength/8,beamRot2);
341 TGeoRotation *beamRot3 = new TGeoRotation("",90+2.*beta*TMath::RadToDeg(),
342 beamPhiPrime*TMath::RadToDeg(), -90);
343 TGeoCombiTrans *beamTransf5 = new TGeoCombiTrans(-0.5*triangleHeight*
344 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,
345 -3*segmentLength/8,beamRot3);
346 TGeoCombiTrans *beamTransf6 = new TGeoCombiTrans(-0.5*triangleHeight*
347 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,segmentLength/8,beamRot3);
348 TGeoRotation *beamRot4 = new TGeoRotation("",90+2.*beta*TMath::RadToDeg(),
349 -beamPhiPrime*TMath::RadToDeg(), -90);
350 TGeoCombiTrans *beamTransf7 = new TGeoCombiTrans(-0.5*triangleHeight*
351 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,-segmentLength/8,beamRot4);
352 TGeoCombiTrans *beamTransf8 = new TGeoCombiTrans(-0.5*triangleHeight*
353 TMath::Tan(halfTheta),fLadderBeamRadius/2.+dy,3*segmentLength/8,beamRot4);
354
355 vol->AddNode(cfSideBeamVol, 1, beamTransf1);
356 vol->AddNode(cfSideBeamVol, 2, beamTransf2);
357 vol->AddNode(cfSideBeamVol, 3, beamTransf3);
358 vol->AddNode(cfSideBeamVol, 4, beamTransf4);
359 vol->AddNode(cfSideBeamVol, 5, beamTransf5);
360 vol->AddNode(cfSideBeamVol, 6, beamTransf6);
361 vol->AddNode(cfSideBeamVol, 7, beamTransf7);
362 vol->AddNode(cfSideBeamVol, 8, beamTransf8);
363 //--- Beams of the bottom
364 TGeoTubeSeg *bottomBeam1 = new TGeoTubeSeg(0, fLadderBeamRadius,
365 fLadderWidth/2.-fLadderLb/3, 0, 180);
366 TGeoVolume *bottomBeam1Vol = new TGeoVolume("ITSsddBottomBeam1Vol",
367 bottomBeam1, carbonFiberLadderStruct);
368 bottomBeam1Vol->SetLineColor(colorCarbonFiber);
369
370 TGeoRotation *bottomBeamRot1 = new TGeoRotation("",90, 90, 90);
371 TGeoCombiTrans *bottomBeamTransf1 = new TGeoCombiTrans(0,
372 -(fLadderHeight/2-fLadderBeamRadius)+dy,0, bottomBeamRot1);
373 vol->AddNode(bottomBeam1Vol, 1, bottomBeamTransf1);
374 TGeoTubeSeg *bottomBeam2 = new TGeoTubeSeg(0, fLadderBeamRadius,
375 fLadderWidth/2.-fLadderLb/3, 0, 90);
376 TGeoVolume *bottomBeam2Vol = new TGeoVolume("ITSsddBottomBeam2Vol",
377 bottomBeam2, carbonFiberLadderStruct);
378 bottomBeam2Vol->SetLineColor(colorCarbonFiber);
379 TGeoCombiTrans *bottomBeamTransf2 = new TGeoCombiTrans(0,
380 -(fLadderHeight/2-fLadderBeamRadius)+dy,
381 -segmentLength/2, bottomBeamRot1);
382 TGeoRotation *bottomBeamRot2 = new TGeoRotation("",-90, 90, -90);
383 TGeoCombiTrans *bottomBeamTransf3 = new TGeoCombiTrans(0,
384 -(fLadderHeight/2-fLadderBeamRadius)+dy,
385 segmentLength/2, bottomBeamRot2);
386 vol->AddNode(bottomBeam2Vol, 1, bottomBeamTransf2);
387 vol->AddNode(bottomBeam2Vol, 2, bottomBeamTransf3);
388 TGeoTubeSeg *bottomBeam3 = new TGeoTubeSeg(0, fLadderBeamRadius,
389 0.5*fLadderWidth/SinD(fBottomBeamAngle)-fLadderLb/3,0,180);
390 TGeoVolume *bottomBeam3Vol = new TGeoVolume("ITSsddBottomBeam3Vol",
391 bottomBeam3, carbonFiberLadderStruct);
392 bottomBeam3Vol->SetLineColor(colorCarbonFiber);
393 //bottomBeam3Vol->SetLineColor(2);
394 // be careful on the next 2 beams : when "reading" from -z to +z and
395 // from the bottom of the ladder,
396 // it should draw a Lambda, and not a V
397 TGeoRotation *bottomBeamRot4 = new TGeoRotation("", -90, fBottomBeamAngle,
398 -90);
399 TGeoCombiTrans *bottomBeamTransf4 = new TGeoCombiTrans(0,
400 -(fLadderHeight/2-fLadderBeamRadius)+dy,-segmentLength/4,bottomBeamRot4);
401 TGeoRotation *bottomBeamRot5 = new TGeoRotation("",-90,-fBottomBeamAngle,
402 -90);
403 TGeoCombiTrans *bottomBeamTransf5 = new TGeoCombiTrans(0,
404 -(fLadderHeight/2-fLadderBeamRadius)+dy,segmentLength/4, bottomBeamRot5);
405 vol->AddNode(bottomBeam3Vol, 1, bottomBeamTransf4);
406 vol->AddNode(bottomBeam3Vol, 2, bottomBeamTransf5);
407};
408//________________________________________________________________________
409TGeoVolume* AliITSv11GeometrySDD::CreateHybrid() {
410 // return a box containing the front-end hybrid
411 TGeoBBox *hybridBox = new TGeoBBox("ITSsddHybridBox",fHybridWidth/2,0.3/2,
412 fHybridLength/2); // <===== 0.3 tempo
413 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
414 TGeoVolume *VirtualHybrid =new TGeoVolume("ITSsddHybrid",hybridBox,airSDD);
415
416 VirtualHybrid->SetVisibility(kFALSE);
417 return VirtualHybrid;
418};
419//________________________________________________________________________
420TGeoVolume* AliITSv11GeometrySDD::CreateLadderSegment() {
421 // Return a box volume containing a segment of a ladder.
422
423 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
424
425 Double_t tDY = -0.5; //space left on top of the ladder
426 Double_t segmentLength = fSegmentLength;
427
428 TGeoBBox *segBox = new TGeoBBox("ITSsddSegBox",
429 (fLadderWidth+fPinSuppWidth)/2,
430 fLadderHeight/2+TMath::Abs(tDY),
431 segmentLength/2);
432 TGeoVolume *VirtualSeg = new TGeoVolume("ITSsddSegment",segBox, airSDD);
433 // the carbon fiber structure :
434 AddLadderCFstruct(tDY, VirtualSeg);
435 // the 2 hybrids :
436 TGeoVolume *Hybrid = CreateHybrid();
437 Double_t hybDx = ((TGeoBBox*)Hybrid->GetShape())->GetDX();
438 Double_t hybDy = ((TGeoBBox*)Hybrid->GetShape())->GetDY();
439 Double_t halfDiag = TMath::Sqrt(hybDx*hybDx+hybDy*hybDy);
440 Double_t theta = 50; //angle in the transverse plane of hybrids
441 // laying on the CF structure // <========== 50° tempo
442 Double_t thetaPrim = theta*TMath::DegToRad()+TMath::ATan(hybDy/hybDx);
443 TGeoRotation *HybridRot1 = new TGeoRotation("", 90-theta, 0, 0);
444 TGeoRotation *HybridRot2 = new TGeoRotation("", -(90-theta), 0, 0);
445 Double_t hybZ = 0;
446 Double_t hybY = fLadderHeight/2-halfDiag*TMath::Cos(thetaPrim)+tDY;
447 Double_t hybX = halfDiag*TMath::Sin(thetaPrim);
448 TGeoCombiTrans *HybTransf1 = new TGeoCombiTrans(-hybX,hybY,hybZ,
449 HybridRot1);
450 VirtualSeg->AddNode(Hybrid, 1, HybTransf1);
451 TGeoCombiTrans *HybTransf2 = new TGeoCombiTrans(hybX,hybY,hybZ,HybridRot2);
452 VirtualSeg->AddNode(Hybrid, 2, HybTransf2);
453 //**********************************
454 TGeoVolume *pinSupport = CreatePinSupport(0);
455 VirtualSeg->AddNode(pinSupport, 1, 0);
456 VirtualSeg->SetVisibility(kFALSE);
457 return VirtualSeg;
458};
459//________________________________________________________________________
460TGeoVolume* AliITSv11GeometrySDD::CreatePinSupport(Double_t rotY) {
461 //medium = ryton ? To code !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
462
463 TGeoMedium *rytonSDD = gGeoManager->GetMedium("ITSsddStaselite4411w");
464 TGeoCone *cone = new TGeoCone("ITSsddPinSuppCone",fPinSuppHeight/2.,
465 0,fPinSuppRmax,0,fPinSuppRmax-
466 fPinSuppHeight*TanD(fPinSuppConeAngle) );
467 TGeoBBox *tong = new TGeoBBox("ITSsddPinSuppTong",fPinSuppRmax,
468 fPinSuppLength/2.,fPinSuppThickness/2.);
469 TGeoTube *hole = new TGeoTube("ITSsddPinSuppHole",0,fPinR,
470 fPinSuppHeight/2.);
471 rotY = 0.0; // Remove compiler warning.
472 if(GetDebug(3)){
473 cone->InspectShape();
474 tong->InspectShape();
475 hole->InspectShape();
476 }
477
478 TGeoTranslation *tongTrans = new TGeoTranslation("ITSsddPinSuppTongTr",0,
479 fPinSuppLength/2.,-fPinSuppHeight/2.+fPinSuppThickness/2.);
480 tongTrans->RegisterYourself();
481 TGeoCompositeShape *pinSupportShape = new TGeoCompositeShape(
482 "ITSssdPinSupportShape","(ITSsddPinSuppCone+"
483 "ITSsddPinSuppTong:ITSsddPinSuppTongTr)-ITSsddPinSuppHole");
484
485 TGeoVolume *pinSupport = new TGeoVolume("ITSssdPinSupport",pinSupportShape,
486 rytonSDD);
487 return pinSupport;
488 // include the pin itself !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
489 // le centre de rotation, translation est le centre du cone
490 // (puisque celui-ci n'a pas bouger dans la composition)
491};
492//________________________________________________________________________
493TGeoVolume* AliITSv11GeometrySDD::CreateEndLadder(Double_t length) {
494 // Return a box volume containing a end of a CF ladder.
495 Double_t tDY = -0.5; //space left on top of the ladder
496 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
497 TGeoMedium *carbonFiberLadderStruct = gGeoManager->GetMedium(
498 "ITSsddCarbonFiber");
499 Double_t segmentLength = fSegmentLength;
500 Double_t topCornerLength = fSegmentLength/2.-fLay4LaddTopCornerEnd;
501
502 TGeoBBox *endBox = new TGeoBBox("ITSsddEndLaddBox",
503 //(fLadderWidth+fPinSuppWidth)/2,
504 (fLadderWidth)/2,
505 fLadderHeight/2+TMath::Abs(tDY),
506 length/2);
507 TGeoVolume *virtualEnd = new TGeoVolume("ITSsddEnd",endBox, airSDD);
508 //**********************************
509 // coding real matter :
510 //**********************************
511 Double_t triangleHeight = fLadderHeight - fLadderBeamRadius;
512 Double_t halfTheta = TMath::ATan( 0.5*fLadderWidth/triangleHeight );
513 Double_t beta = (TMath::Pi()-2.*halfTheta)/4.;
514 Double_t alpha = TMath::Pi()*3./4. - halfTheta/2.;
515 Int_t colorCarbonFiber = 4;
516 //--- The 3 V shape corners of the Carbon Fiber Ladder
517 //--- the top V
518 TGeoArb8 *cfLaddTop1 = CreateLadderSide( topCornerLength/2., halfTheta, -1,
519 fLadderLa, fLadderHa, fLadderl);
520 TGeoVolume *cfLaddTopVol1 = new TGeoVolume("ITSsddCFladdTopCornerVol1",
521 cfLaddTop1,carbonFiberLadderStruct);
522 cfLaddTopVol1->SetLineColor(colorCarbonFiber);
523 TGeoArb8 *cfLaddTop2 = CreateLadderSide( topCornerLength/2., halfTheta, 1,
524 fLadderLa, fLadderHa, fLadderl);
525 TGeoVolume *cfLaddTopVol2 = new TGeoVolume("ITSsddCFladdTopCornerV2",
526 cfLaddTop2,carbonFiberLadderStruct);
527 cfLaddTopVol2->SetLineColor(colorCarbonFiber);
528 TGeoTranslation *trTop1 = new TGeoTranslation(0, fLadderHeight/2+tDY,
529 -(length-topCornerLength)/2.);
530 virtualEnd->AddNode(cfLaddTopVol1, 1, trTop1);
531 virtualEnd->AddNode(cfLaddTopVol2, 1, trTop1);
532 //--- the 2 side V
533 TGeoArb8 *cfLaddSide1 = CreateLadderSide( length/2., beta, -1,
534 fLadderLb, fLadderHb, fLadderl);
535 TGeoVolume *cfLaddSideVol1 = new TGeoVolume("ITSsddCFladdSideCornerV1",
536 cfLaddSide1,carbonFiberLadderStruct);
537 cfLaddSideVol1->SetLineColor(colorCarbonFiber);
538 TGeoArb8 *cfLaddSide2 = CreateLadderSide( length/2., beta, 1,
539 fLadderLb, fLadderHb, fLadderl);
540 TGeoVolume *cfLaddSideVol2 = new TGeoVolume("ITSsddCFladdSideCornerV2",
541 cfLaddSide2,carbonFiberLadderStruct);
542 cfLaddSideVol2->SetLineColor(colorCarbonFiber);
543 Double_t dYTranslation = ( fLadderHeight/2. - 0.5*fLadderWidth*
544 TMath::Tan(beta)- fLadderBeamRadius );
545 // because center of the triangle doesn't correspond to virtual vol. center
546 Double_t distCenterSideDown = 0.5*fLadderWidth/TMath::Cos(beta);
547 TGeoCombiTrans *ctSideR = CreateCombiTrans("", distCenterSideDown, 0,
548 alpha*TMath::RadToDeg());
549 AddTranslationTotCombiTrans(ctSideR, 0, -dYTranslation+tDY, 0);
550 TGeoCombiTrans *ctSideL = CreateCombiTrans("", distCenterSideDown, 0,
551 -alpha*TMath::RadToDeg());
552 AddTranslationTotCombiTrans(ctSideL, 0, -dYTranslation+tDY, 0);
553 virtualEnd->AddNode(cfLaddSideVol1, 1, ctSideR);
554 virtualEnd->AddNode(cfLaddSideVol2, 1, ctSideR);
555 virtualEnd->AddNode(cfLaddSideVol1, 2, ctSideL);
556 virtualEnd->AddNode(cfLaddSideVol2, 2, ctSideL);
557 //--- The beams
558 // Beams on the sides
559 Double_t beamPhiPrime = TMath::ASin(1./TMath::Sqrt( (1+TMath::Sin(2*beta)*
560 TMath::Sin(2*beta)/(TanD(fBeamSidePhi)*TanD(fBeamSidePhi))) ));
561 if(GetDebug(3)) cout<<"Phi prime = "<<beamPhiPrime*TMath::RadToDeg()<<endl;
562 Double_t beamLength = TMath::Sqrt( fLadderHeight*fLadderHeight/
563 (TMath::Sin(beamPhiPrime)*TMath::Sin(beamPhiPrime))
564 +fLadderWidth*fLadderWidth/4.)-fLadderLa/2-fLadderLb/2;
565 TGeoTubeSeg *sideBeam = new TGeoTubeSeg(0, fLadderBeamRadius,
566 beamLength/2., 0, 180);
567 TGeoVolume *cfSideBeamVol = new TGeoVolume("ITSsddCFSideBeamVol",
568 sideBeam, carbonFiberLadderStruct);
569 cfSideBeamVol->SetLineColor(colorCarbonFiber);
570 //Euler rotation : about Z, then new X, then new Z
571 TGeoRotation *beamRot1 = new TGeoRotation("",90-2.*beta*TMath::RadToDeg(),
572 -beamPhiPrime*TMath::RadToDeg(), -90);
573 TGeoCombiTrans *beamTransf1 = new TGeoCombiTrans(0.5*triangleHeight*
574 TMath::Tan(halfTheta),fLadderBeamRadius/2.+tDY,
575 -length/2+segmentLength/8,beamRot1);
576 TGeoRotation *beamRot2 = new TGeoRotation("",90-2.*beta*TMath::RadToDeg(),
577 beamPhiPrime*TMath::RadToDeg(), -90);
578 TGeoCombiTrans *beamTransf3 = new TGeoCombiTrans(0.5*triangleHeight*
579 TMath::Tan(halfTheta),fLadderBeamRadius/2.+tDY,
580 -length/2+3*segmentLength/8,beamRot2);
581 TGeoRotation *beamRot3 = new TGeoRotation("",90+2.*beta*TMath::RadToDeg(),
582 beamPhiPrime*TMath::RadToDeg(), -90);
583 TGeoCombiTrans *beamTransf5 = new TGeoCombiTrans(-0.5*triangleHeight*
584 TMath::Tan(halfTheta),fLadderBeamRadius/2.+tDY,
585 -length/2+segmentLength/8,beamRot3);
586 TGeoRotation *beamRot4 = new TGeoRotation("",90+2.*beta*TMath::RadToDeg(),
587 -beamPhiPrime*TMath::RadToDeg(), -90);
588 TGeoCombiTrans *beamTransf7 = new TGeoCombiTrans(-0.5*triangleHeight*
589 TMath::Tan(halfTheta),fLadderBeamRadius/2.+tDY,
590 -length/2+3*segmentLength/8,beamRot4);
591 virtualEnd->AddNode(cfSideBeamVol, 1, beamTransf1);
592 virtualEnd->AddNode(cfSideBeamVol, 2, beamTransf3);
593 virtualEnd->AddNode(cfSideBeamVol, 3, beamTransf5);
594 virtualEnd->AddNode(cfSideBeamVol, 4, beamTransf7);
595 //--- Beams of the bottom
596 TGeoTubeSeg *bottomBeam1 = new TGeoTubeSeg(0, fLadderBeamRadius,
597 fLadderWidth/2.-fLadderLb/3, 0, 180);
598 TGeoVolume *bottomBeam1Vol = new TGeoVolume("ITSsddBottomBeam1Vol",
599 bottomBeam1, carbonFiberLadderStruct);
600 bottomBeam1Vol->SetLineColor(colorCarbonFiber);
601 TGeoRotation *bottomBeamRot1 = new TGeoRotation("",90, 90, 90);
602 TGeoCombiTrans *bottomBeamTransf1 = new TGeoCombiTrans(0,
603 -(fLadderHeight/2-fLadderBeamRadius)+tDY,
604 -length/2+fSegmentLength/2, bottomBeamRot1);
605 virtualEnd->AddNode(bottomBeam1Vol, 1, bottomBeamTransf1);
606 TGeoTubeSeg *bottomBeam2 = new TGeoTubeSeg(0, fLadderBeamRadius,
607 fLadderWidth/2.-fLadderLb/3, 0, 90);
608 TGeoVolume *bottomBeam2Vol = new TGeoVolume("ITSsddBottomBeam2Vol",
609 bottomBeam2, carbonFiberLadderStruct);
610 bottomBeam2Vol->SetLineColor(colorCarbonFiber);
611 TGeoCombiTrans *bottomBeamTransf2 = new TGeoCombiTrans(0,
612 -(fLadderHeight/2-fLadderBeamRadius)+tDY,-length/2, bottomBeamRot1);
613 virtualEnd->AddNode(bottomBeam2Vol, 1, bottomBeamTransf2);
614 //**********************************
615 virtualEnd->SetVisibility(kFALSE);
616 return virtualEnd;
617};
618//________________________________________________________________________
619TGeoVolume* AliITSv11GeometrySDD::CreateSDDsensor() {
620 // return a box containing the SDD sensor
621
622 TGeoBBox *sensorBox = new TGeoBBox("ITSsddSensorBox",
623 fWaferWidth/2, fWaferThickness/2,fWaferLength/2);
624 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
625 TGeoVolume *virtualSensor =new TGeoVolume("ITSsddSensor",sensorBox,airSDD);
626
627 //virtualSensor->SetVisibility(kFALSE);
628 return virtualSensor;
629};
630//________________________________________________________________________
631TGeoVolume *AliITSv11GeometrySDD::CreateLay3Detectors() {
632 // return a box volume containing the detectors
633
634 TGeoBBox *detBox = new TGeoBBox("ITSssdDetBox3",
635 fWaferWidth/2,
636 (fLadWaferSep + 2*fWaferThickness)/2,
637 fLay3LadderLength*((fLay3Ndet-0.5)/fLay3Ndet)/2);
638 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
639 TGeoVolume *virtualDet = new TGeoVolume("ITSsddDet3",detBox, airSDD);
640 TGeoVolume *vSDD = CreateSDDsensor();
641 char transName[30];
642 for (Int_t i=0; i<fLay3Ndet; i++) {
643 Double_t localZ = fLay3sensorZPos[i];
644 Double_t localY = fLadWaferSep/2+fWaferThickness/2;
645 if (i%2!=0)
646 localY = -localY;
647 sprintf(transName, "ITSsddLay3SensorPos%i", i+1);
648 TGeoTranslation *sensorPos = new TGeoTranslation(transName,0,localY,
649 localZ);
650 virtualDet->AddNode(vSDD, i+1, sensorPos);
651 }
652 virtualDet->SetVisibility(kFALSE);
653 return virtualDet;
654};
655//________________________________________________________________________
656void AliITSv11GeometrySDD::Layer4(TGeoVolume *Moth) {
657 // Insert the layer 4 in the mother volume. This is a virtual volume
658 // containing ladders of layer 4 and the supporting rings
659
660 TGeoTube *virtualLayer4Shape =new TGeoTube("ITSsddLayer4Shape",
661 fLay4Rmin,fLay4Rmax,fLay4Length*0.5);
662 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
663 TGeoVolume *virtualLayer4 = new TGeoVolume("ITSsddLayer4",
664 virtualLayer4Shape, airSDD);
665 TGeoVolume *lay4Ladder = CreateLay4Ladder();
666 TGeoVolume *lay4Detectors = CreateLay4Detectors();
667 Double_t dPhi = 360./fLay4Nladd;
668 Double_t detBoxThickness = fLadWaferSep + 2*fWaferThickness;
669 // placing virtual ladder and detectors volumes following ladder
670 // ordering convention
671 char rotName[20];
672 Int_t iLaddMin = 0;
673 Int_t iLaddMax = fLay4Nladd;
674 if ((fAddOnlyLadder4>=0)&&(fAddOnlyLadder4<fLay4Nladd)) {
675 iLaddMin = fAddOnlyLadder4;
676 iLaddMax = fAddOnlyLadder4+1;
677 }
678 for (Int_t iLadd = iLaddMin; iLadd < iLaddMax; iLadd++) {
679 sprintf(rotName, "ITSsddLay4Ladd%i",iLadd);
680 Double_t minRadiusLadBox = fLay4LaddShortRadius;
681 if (iLadd%2 != 0)
682 minRadiusLadBox = fLay4LaddLongRadius;
683 minRadiusLadBox += ((TGeoBBox*)lay4Ladder->GetShape())->GetDY();
684 TGeoCombiTrans *ctLadd = CreateCombiTrans(rotName, minRadiusLadBox,
685 0, -90+iLadd*dPhi);
686 virtualLayer4->AddNode(lay4Ladder, iLadd, ctLadd);
687 sprintf(rotName, "ITSsddLay4DetBox%i",iLadd);
688 Double_t minRadiusDetBox = fLay4DetShortRadius;
689 if (iLadd%2 != 0)
690 minRadiusDetBox = fLay4DetLongRadius;
691 minRadiusDetBox += detBoxThickness/2;
692 TGeoCombiTrans *ctDet = CreateCombiTrans(rotName, minRadiusDetBox,
693 0, -90+iLadd*dPhi);
694 virtualLayer4->AddNode(lay4Detectors, iLadd, ctDet);
695 }
696 virtualLayer4->SetVisibility(kFALSE);
697 Moth->AddNode(virtualLayer4,1,0);
698};
699//________________________________________________________________________
700TGeoVolume *AliITSv11GeometrySDD::CreateLay4Ladder() {
701 // return a box volume containing the CF ladder and all pieces on it
702
703 TGeoVolume *laddSegment = CreateLadderSegment();
704 TGeoBBox *ladBox = new TGeoBBox("ITSsddLadBox",
705 ((TGeoBBox*)laddSegment->GetShape())->GetDX(),
706 ((TGeoBBox*)laddSegment->GetShape())->GetDY(),
707 //dX,dY = dX,dY of the segment
708 fLay4LadderLength/2);
709 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
710 TGeoVolume *virtualLadder = new TGeoVolume("ITSsddLadder",ladBox, airSDD);
711 Double_t segmentLength = fSegmentLength;
712 char transName[20];
713 // placing virtual ladder segment following detector ordering convention
714 //=======================================================================
715 Int_t iSegmentMin = 1;
716 Int_t iSegmentMax = fLay4Ndet;
717 if (fAddOnlySegment) {
718 iSegmentMin = fAddOnlySegment;
719 iSegmentMax = fAddOnlySegment;
720 }
721 for (Int_t iSegment = iSegmentMin; iSegment <= iSegmentMax; iSegment++ ) {
722 sprintf(transName, "ITSsddLay4LaddSeg%i", iSegment);
723 Double_t segmentPos = segmentLength*(fLay4Ndet/2-iSegment) +
724 segmentLength/2;
725 TGeoTranslation *segTr = new TGeoTranslation(transName,0,0,segmentPos);
726 virtualLadder->AddNode(laddSegment, iSegment, segTr);
727 }
728 // putting virtual volume corresponding to the end of ladder
729 //=======================================================================
730 Double_t endLength = (fLay4LadderLength-fLay4Ndet*fSegmentLength)/2.;
731 TGeoVolume *endLadder = CreateEndLadder( endLength );
732 TGeoTranslation *endTrZPos =
733 new TGeoTranslation("ITSsddEndTrZPos",0,0,
734 fSegmentLength*(fLay4Ndet/2)+endLength/2.);
735 //Euler rotation : about Z, then new X, then new Z
736 TGeoRotation *endZNegRot = new TGeoRotation("",90, 180, -90);
737 TGeoCombiTrans *endTrZNeg =
738 new TGeoCombiTrans(0,0,-fSegmentLength*(fLay4Ndet/2)-endLength/2.,
739 endZNegRot);
740 if ((fAddOnlySegment==0)||(fAddOnlySegment==1))
741 virtualLadder->AddNode(endLadder, 1, endTrZPos);
742 if ((fAddOnlySegment==0)||(fAddOnlySegment==fLay4Ndet))
743 virtualLadder->AddNode(endLadder, 2, endTrZNeg);
744 virtualLadder->SetVisibility(kFALSE);
745 return virtualLadder;
746};
747//________________________________________________________________________
748TGeoVolume *AliITSv11GeometrySDD::CreateLay4Detectors() {
749 // return a box volume containing the detectors
750
751 TGeoBBox *detBox = new TGeoBBox("ITSssdDetBox4",
752 fWaferWidth/2,
753 (fLadWaferSep + 2*fWaferThickness)/2,
754 fLay4LadderLength*((fLay4Ndet-0.5)/fLay4Ndet)/2);
755 TGeoMedium *airSDD = gGeoManager->GetMedium("ITSsddAir");
756 TGeoVolume *virtualDet = new TGeoVolume("ITSsddDet4",detBox, airSDD);
757 TGeoVolume *vSDD = CreateSDDsensor();
758 char transName[30];
759 for (Int_t i=0; i<fLay4Ndet; i++) {
760 Double_t localZ = fLay4sensorZPos[i];
761 Double_t localY = fLadWaferSep/2+fWaferThickness/2;
762 if (i%2!=0)
763 localY = -localY;
764 sprintf(transName, "ITSsddLay4SensorPos%i", i+1);
765 TGeoTranslation *sensorPos = new TGeoTranslation(transName,0,localY,
766 localZ);
767 virtualDet->AddNode(vSDD, i+1, sensorPos);
768 }
769 virtualDet->SetVisibility(kFALSE);
770 return virtualDet;
771};