1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 Revision 1.12 2001/05/16 14:57:17 alibrary
19 New files for folders and Stack
21 Revision 1.11 2001/01/26 21:25:48 morsch
22 Empty default constructors and.
24 Revision 1.10 2001/01/23 18:58:19 hristov
25 Initialisation of some pointers
27 Revision 1.9 2001/01/17 20:53:40 hristov
28 Destructors corrected to avoid memory leaks
30 Revision 1.8 2000/12/21 22:12:41 morsch
31 Clean-up of coding rule violations,
33 Revision 1.7 2000/11/08 13:01:40 morsch
34 Chamber half-planes of stations 3-5 at different z-positions.
36 Revision 1.6 2000/11/06 09:20:43 morsch
37 AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
38 Draw() method. This avoids code and parameter replication.
40 Revision 1.5 2000/10/23 13:37:40 morsch
41 Correct z-position of slat planes.
43 Revision 1.4 2000/10/22 16:55:43 morsch
44 Use only x-symmetry in global to local transformations and delegation.
46 Revision 1.3 2000/10/18 11:42:06 morsch
47 - AliMUONRawCluster contains z-position.
48 - Some clean-up of useless print statements during initialisations.
50 Revision 1.2 2000/10/09 14:06:18 morsch
51 Some type cast problems of type (TMath::Sign((Float_t)1.,x)) corrected (P.H.)
53 Revision 1.1 2000/10/06 09:00:47 morsch
54 Segmentation class for chambers built out of slats.
58 #include "AliMUONSegmentationSlat.h"
59 #include "AliMUONSegmentationSlatModule.h"
61 #include "AliMUONChamber.h"
63 #include "TObjArray.h"
68 #include <TGeometry.h>
71 //___________________________________________
72 ClassImp(AliMUONSegmentationSlat)
74 AliMUONSegmentationSlat::AliMUONSegmentationSlat()
76 // Default constructor
79 AliMUONSegmentationSlat::AliMUONSegmentationSlat(Int_t nsec)
81 // Non default constructor
83 fNDiv = new TArrayI(4);
88 AliMUONSegmentationSlat::~AliMUONSegmentationSlat(){
89 //PH Delete TObjArrays
101 void AliMUONSegmentationSlat::SetPadSize(Float_t p1, Float_t p2)
103 // Sets the pad (strip) size
109 Float_t AliMUONSegmentationSlat::GetAnod(Float_t xhit) const
111 // Returns for a hit position xhit the position of the nearest anode wire
112 Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5;
116 Float_t AliMUONSegmentationSlat::Dpx(Int_t isec) const
119 // Returns x-pad size for given sector isec
120 // isec = 100*islat+iregion
122 Int_t islat, iregion;
125 return Slat(islat)->Dpx(iregion);
128 Float_t AliMUONSegmentationSlat::Dpy(Int_t isec) const
131 // Returns y-pad (strip) size for given sector isec
135 void AliMUONSegmentationSlat::SetPadDivision(Int_t ndiv[4])
138 // Defines the pad size perp. to the anode wire (y) for different sectors.
139 // Pad sizes are defined as integral fractions ndiv of a basis pad size
142 for (Int_t i=0; i<4; i++) {
147 void AliMUONSegmentationSlat::GlobalToLocal(
148 Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal)
151 // Perform local to global transformation for space coordinates
156 // Transform According to slat plane z-position: negative side is shifted down
157 // positive side is shifted up
158 // by half the overlap
159 zlocal = z-fChamber->Z();
160 zlocal = (x>0) ? zlocal-2.*fDz : zlocal+2.*fDz;
161 // Set the signs for the symmetry transformation and transform to first quadrant
163 Float_t xabs=TMath::Abs(x);
165 Int_t ifirst = (zlocal < Float_t(0))? 0:1;
168 for (i=ifirst; i<fNSlats; i+=2) {
170 if ((y >= fYPosition[i]) && (y < fYPosition[i]+fSlatY)) break;
174 // Transform to local coordinate system
177 ylocal = y -fYPosition[index];
178 xlocal = xabs-fXPosition[index];
180 if (i >= fNSlats) {islat = -1; x=-1; y = -1;}
183 void AliMUONSegmentationSlat::GlobalToLocal(
184 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
187 // Perform global to local transformation for pad coordinates
195 // Find slat number (index) and iylocal
196 for (Int_t i=0; i<fNSlats; i++) {
197 iytemp-=Slat(i)->Npy();
200 if (iytemp <= 0) break;
205 ixlocal=TMath::Abs(ix);
209 void AliMUONSegmentationSlat::
210 LocalToGlobal(Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z)
212 // Transform from local to global space coordinates
214 // upper plane (y>0) even slat number is shifted down
215 // upper plane (y>0) odd slat number is shifted up
216 // lower plane (y<0) even slat number is shifted up
217 // lower plane (y<0) odd slat number is shifted down
220 x = (xlocal+fXPosition[islat])*fSym;
221 y=(ylocal+fYPosition[islat]);
223 z = (TMath::Even(islat)) ? -fDz : fDz ;
224 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
230 void AliMUONSegmentationSlat::LocalToGlobal(
231 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
233 // Transform from local to global pad coordinates
239 // Find slat number (index) and iylocal
240 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
247 void AliMUONSegmentationSlat::SetSymmetry(Int_t ix)
249 // Set set signs for symmetry transformation
250 fSym=TMath::Sign(1,ix);
253 void AliMUONSegmentationSlat::SetSymmetry(Float_t x)
255 // Set set signs for symmetry transformation
256 fSym=Int_t (TMath::Sign((Float_t)1.,x));
259 void AliMUONSegmentationSlat::
260 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
262 // Returns pad coordinates for given set of space coordinates
265 Float_t xlocal, ylocal;
267 GlobalToLocal(x,y,z,islat,xlocal,ylocal);
272 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
273 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
275 ix=ix*Int_t(TMath::Sign((Float_t)1.,x));
279 void AliMUONSegmentationSlat::
280 GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
282 // Returns real coordinates (x,y) for given pad coordinates (ix,iy)
284 Int_t islat, ixlocal, iylocal;
286 // Delegation of transforamtion to slat
287 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
288 Slat(islat)->GetPadC(ixlocal, iylocal, x, y);
290 x+=fXPosition[islat];
291 y+=fYPosition[islat];
293 // Symmetry transformation of half planes
294 x=x*TMath::Sign(1,ix);
297 z = (TMath::Even(islat)) ? -fDz : fDz ;
298 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
302 Int_t AliMUONSegmentationSlat::ISector()
304 // Returns current sector during tracking
307 iregion = fCurrentSlat->ISector();
308 return 100*fSlatIndex+iregion;
311 Int_t AliMUONSegmentationSlat::Sector(Int_t ix, Int_t iy)
313 // Returns sector for pad coordiantes (ix,iy)
314 Int_t ixlocal, iylocal, iregion, islat;
316 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
318 iregion = Slat(islat)->Sector(ixlocal, iylocal);
319 return 100*islat+iregion;
323 void AliMUONSegmentationSlat::SetPad(Int_t ix, Int_t iy)
326 // Sets virtual pad coordinates, needed for evaluating pad response
327 // outside the tracking program
328 Int_t islat, ixlocal, iylocal;
332 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
334 fCurrentSlat=Slat(islat);
335 fCurrentSlat->SetPad(ixlocal, iylocal);
338 void AliMUONSegmentationSlat::SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
340 // Sets current hit coordinates
342 Float_t xlocal, ylocal;
347 GlobalToLocal(xhit,yhit,zhit,islat,xlocal,ylocal);
349 if (islat < 0) printf("\n SetHit: %d", islat);
351 fCurrentSlat=Slat(islat);
352 fCurrentSlat->SetHit(xlocal, ylocal);
356 void AliMUONSegmentationSlat::
357 FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
359 // Initialises iteration over pads for charge distribution algorithm
365 Float_t xlocal, ylocal;
366 GlobalToLocal(xhit, yhit, zhit, islat, xlocal, ylocal);
368 fCurrentSlat=Slat(islat);
369 fCurrentSlat->FirstPad(xlocal, ylocal, dx, dy);
374 void AliMUONSegmentationSlat::NextPad()
376 // Stepper for the iteration over pads
378 fCurrentSlat->NextPad();
382 Int_t AliMUONSegmentationSlat::MorePads()
383 // Stopping condition for the iterator over pads
385 // Are there more pads in the integration region
387 return fCurrentSlat->MorePads();
390 void AliMUONSegmentationSlat::
391 IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
393 // Returns integration limits for current pad
396 fCurrentSlat->IntegrationLimits(x1, x2, y1, y2);
400 void AliMUONSegmentationSlat::
401 Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
403 // Returns list of neighbours of pad with coordinates iX, iY
405 Int_t i, xListLocal[10], yListLocal[10], iXlocal, iYlocal, islat;
409 GlobalToLocal(iX, iY, islat, iXlocal, iYlocal);
411 Slat(islat)->Neighbours(iXlocal, iYlocal, Nlist, xListLocal, yListLocal);
413 for (i=0; i<*Nlist; i++) LocalToGlobal(islat, xListLocal[i], yListLocal[i], Xlist[i], Ylist[i]);
418 Int_t AliMUONSegmentationSlat::Ix()
420 // Return current pad coordinate ix during stepping
422 ixl=fCurrentSlat->Ix();
423 iyl=fCurrentSlat->Iy();
425 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
428 GlobalToLocal(ix, iy, isc, ixc, iyc);
429 Slat(isc)->GetPadC(ixc,iyc,xc,yc);
434 Int_t AliMUONSegmentationSlat::Iy()
436 // Return current pad coordinate iy during stepping
438 ixl=fCurrentSlat->Ix();
439 iyl=fCurrentSlat->Iy();
440 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
446 // Signal Generation Condition during Stepping
447 Int_t AliMUONSegmentationSlat::SigGenCond(Float_t x, Float_t y, Float_t z)
450 // True if signal generation condition fullfilled
451 Float_t xlocal, ylocal;
453 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
454 return Slat(islat)->SigGenCond(xlocal, ylocal, z);
457 // Initialise signal generation at coord (x,y,z)
458 void AliMUONSegmentationSlat::SigGenInit(Float_t x, Float_t y, Float_t z)
460 // Initialize the signal generation condition
462 Float_t xlocal, ylocal;
465 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
466 Slat(islat)->SigGenInit(xlocal, ylocal, z);
471 void AliMUONSegmentationSlat::Init(Int_t chamber)
474 // Initialize slat modules of quadrant +/+
475 // The other three quadrants are handled through symmetry transformations
477 //printf("\n Initialise Segmentation Slat \n");
480 // Initialize Slat modules
484 for (i=0; i<4; i++) ndiv[i]=(*fNDiv)[i];
489 for (i=0; i<15; i++) fSlatX[i]=0.;
491 // Initialize array of slats
492 fSlats = new TObjArray(fNSlats);
493 // Maximum number of strips (pads) in x and y
496 // for each slat in the quadrant (+,+)
497 for (islat=0; islat<fNSlats; islat++) {
498 fSlats->AddAt(CreateSlatModule(),islat);
500 AliMUONSegmentationSlatModule *slat = Slat(islat);
505 slat->SetPadSize(fDpx, fDpy);
506 // Forward wire pitch
507 slat->SetDAnod(fWireD);
508 // Foward segmentation
509 slat->SetPadDivision(ndiv);
510 slat->SetPcbBoards(fPcb[islat]);
511 // Initialize slat module
513 // y-position of slat module relative to the first (closest to the beam)
514 fYPosition[islat]= fYPosOrigin+islat*(fSlatY-2.*fShift);
517 if (slat->Npx() > fNpx) fNpx=slat->Npx();
519 for (isec=0; isec< 4; isec++)
521 fSlatX[islat]+=40.*fPcb[islat][isec];
525 // Set parent chamber number
526 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
527 fChamber=&(pMUON->Chamber(chamber));
535 void AliMUONSegmentationSlat::SetNPCBperSector(Int_t *npcb)
537 // PCB distribution for station 4 (6 rows with 1+3 segmentation regions)
538 for (Int_t islat=0; islat<fNSlats; islat++){
539 fPcb[islat][0] = *(npcb + 4 * islat);
540 fPcb[islat][1] = *(npcb + 4 * islat + 1);
541 fPcb[islat][2] = *(npcb + 4 * islat + 2);
542 fPcb[islat][3] = *(npcb + 4 * islat + 3);
547 void AliMUONSegmentationSlat::SetSlatXPositions(Float_t *xpos)
549 // Set x-positions of Slats
550 for (Int_t islat=0; islat<fNSlats; islat++) fXPosition[islat]=xpos[islat];
553 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::Slat(Int_t index) const
554 { return ((AliMUONSegmentationSlatModule*) (*fSlats)[index]);}
557 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::
560 // Factory method for slat module
561 return new AliMUONSegmentationSlatModule(4);
565 void AliMUONSegmentationSlat::Draw(const char* opt) const
567 // Draw method for event display
569 if (!strcmp(opt,"eventdisplay")) {
570 const int kColorMUON1 = kYellow;
571 const int kColorMUON2 = kBlue;
573 // Drawing Routines for example for Event Display
576 char nameChamber[9], nameSlat[9], nameNode[9];
579 // Number of modules per slat
580 for (i=0; i<fNSlats; i++) {
582 for (j=0; j<4; j++) npcb[i]+=fPcb[i][j];
585 TNode* top=gAlice->GetGeometry()->GetNode("alice");
586 sprintf(nameChamber,"C_MUON%d",fId+1);
587 new TBRIK(nameChamber,"Mother","void",340,340,5.);
589 sprintf(nameNode,"MUON%d",100+fId+1);
590 TNode* node = new TNode(nameNode,"Chambernode",nameChamber,0,0,fChamber->Z(),"");
592 node->SetLineColor(kBlack);
593 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
594 (pMUON->Nodes())->Add(node);
598 for (j=0; j<fNSlats; j++)
600 sprintf(nameSlat,"SLAT%d",100*fId+1+j);
601 Float_t dx = 20.*npcb[j];
603 new TBRIK(nameSlat,"Slat Module","void",dx,20.,0.25);
605 color = TMath::Even(j) ? kColorMUON1 : kColorMUON2;
607 sprintf(nameNode,"SLAT%d",100*fId+1+j);
609 new TNode(nameNode,"Slat Module",nameSlat, dx+fXPosition[j],fYPosition[j]+dy,0,"");
610 nodeSlat->SetLineColor(color);
612 sprintf(nameNode,"SLAT%d",100*fId+1+j+fNSlats);
614 new TNode(nameNode,"Slat Module",nameSlat,-dx-fXPosition[j],fYPosition[j]+dy,0,"");
615 nodeSlat->SetLineColor(color);