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 1.13 2001/07/20 10:03:14 morsch
19 Changes needed to work with Root 3.01 (substitute lhs [] operator). (Jiri Chudoba)
21 Revision 1.12 2001/05/16 14:57:17 alibrary
22 New files for folders and Stack
24 Revision 1.11 2001/01/26 21:25:48 morsch
25 Empty default constructors and.
27 Revision 1.10 2001/01/23 18:58:19 hristov
28 Initialisation of some pointers
30 Revision 1.9 2001/01/17 20:53:40 hristov
31 Destructors corrected to avoid memory leaks
33 Revision 1.8 2000/12/21 22:12:41 morsch
34 Clean-up of coding rule violations,
36 Revision 1.7 2000/11/08 13:01:40 morsch
37 Chamber half-planes of stations 3-5 at different z-positions.
39 Revision 1.6 2000/11/06 09:20:43 morsch
40 AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
41 Draw() method. This avoids code and parameter replication.
43 Revision 1.5 2000/10/23 13:37:40 morsch
44 Correct z-position of slat planes.
46 Revision 1.4 2000/10/22 16:55:43 morsch
47 Use only x-symmetry in global to local transformations and delegation.
49 Revision 1.3 2000/10/18 11:42:06 morsch
50 - AliMUONRawCluster contains z-position.
51 - Some clean-up of useless print statements during initialisations.
53 Revision 1.2 2000/10/09 14:06:18 morsch
54 Some type cast problems of type (TMath::Sign((Float_t)1.,x)) corrected (P.H.)
56 Revision 1.1 2000/10/06 09:00:47 morsch
57 Segmentation class for chambers built out of slats.
61 #include "AliMUONSegmentationSlat.h"
62 #include "AliMUONSegmentationSlatModule.h"
64 #include "AliMUONChamber.h"
66 #include "TObjArray.h"
71 #include <TGeometry.h>
74 //___________________________________________
75 ClassImp(AliMUONSegmentationSlat)
77 AliMUONSegmentationSlat::AliMUONSegmentationSlat()
79 // Default constructor
82 AliMUONSegmentationSlat::AliMUONSegmentationSlat(Int_t nsec)
84 // Non default constructor
86 fNDiv = new TArrayI(4);
91 AliMUONSegmentationSlat::~AliMUONSegmentationSlat(){
92 //PH Delete TObjArrays
104 void AliMUONSegmentationSlat::SetPadSize(Float_t p1, Float_t p2)
106 // Sets the pad (strip) size
112 Float_t AliMUONSegmentationSlat::GetAnod(Float_t xhit) const
114 // Returns for a hit position xhit the position of the nearest anode wire
115 Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5;
119 Float_t AliMUONSegmentationSlat::Dpx(Int_t isec) const
122 // Returns x-pad size for given sector isec
123 // isec = 100*islat+iregion
125 Int_t islat, iregion;
128 return Slat(islat)->Dpx(iregion);
131 Float_t AliMUONSegmentationSlat::Dpy(Int_t isec) const
134 // Returns y-pad (strip) size for given sector isec
138 void AliMUONSegmentationSlat::SetPadDivision(Int_t ndiv[4])
141 // Defines the pad size perp. to the anode wire (y) for different sectors.
142 // Pad sizes are defined as integral fractions ndiv of a basis pad size
145 for (Int_t i=0; i<4; i++) {
150 void AliMUONSegmentationSlat::GlobalToLocal(
151 Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal)
154 // Perform local to global transformation for space coordinates
159 // Transform According to slat plane z-position: negative side is shifted down
160 // positive side is shifted up
161 // by half the overlap
162 zlocal = z-fChamber->Z();
163 zlocal = (x>0) ? zlocal-2.*fDz : zlocal+2.*fDz;
164 // Set the signs for the symmetry transformation and transform to first quadrant
166 Float_t xabs=TMath::Abs(x);
168 Int_t ifirst = (zlocal < Float_t(0))? 0:1;
171 for (i=ifirst; i<fNSlats; i+=2) {
173 if ((y >= fYPosition[i]) && (y < fYPosition[i]+fSlatY)) break;
177 // Transform to local coordinate system
180 ylocal = y -fYPosition[index];
181 xlocal = xabs-fXPosition[index];
183 if (i >= fNSlats) {islat = -1; x=-1; y = -1;}
186 void AliMUONSegmentationSlat::GlobalToLocal(
187 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
190 // Perform global to local transformation for pad coordinates
198 // Find slat number (index) and iylocal
199 for (Int_t i=0; i<fNSlats; i++) {
200 iytemp-=Slat(i)->Npy();
203 if (iytemp <= 0) break;
208 ixlocal=TMath::Abs(ix);
212 void AliMUONSegmentationSlat::
213 LocalToGlobal(Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z)
215 // Transform from local to global space coordinates
217 // upper plane (y>0) even slat number is shifted down
218 // upper plane (y>0) odd slat number is shifted up
219 // lower plane (y<0) even slat number is shifted up
220 // lower plane (y<0) odd slat number is shifted down
223 x = (xlocal+fXPosition[islat])*fSym;
224 y=(ylocal+fYPosition[islat]);
226 z = (TMath::Even(islat)) ? -fDz : fDz ;
227 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
233 void AliMUONSegmentationSlat::LocalToGlobal(
234 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
236 // Transform from local to global pad coordinates
242 // Find slat number (index) and iylocal
243 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
250 void AliMUONSegmentationSlat::SetSymmetry(Int_t ix)
252 // Set set signs for symmetry transformation
253 fSym=TMath::Sign(1,ix);
256 void AliMUONSegmentationSlat::SetSymmetry(Float_t x)
258 // Set set signs for symmetry transformation
259 fSym=Int_t (TMath::Sign((Float_t)1.,x));
262 void AliMUONSegmentationSlat::
263 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
265 // Returns pad coordinates for given set of space coordinates
268 Float_t xlocal, ylocal;
270 GlobalToLocal(x,y,z,islat,xlocal,ylocal);
275 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
276 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
278 ix=ix*Int_t(TMath::Sign((Float_t)1.,x));
282 void AliMUONSegmentationSlat::
283 GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
285 // Returns real coordinates (x,y) for given pad coordinates (ix,iy)
287 Int_t islat, ixlocal, iylocal;
289 // Delegation of transforamtion to slat
290 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
291 Slat(islat)->GetPadC(ixlocal, iylocal, x, y);
293 x+=fXPosition[islat];
294 y+=fYPosition[islat];
296 // Symmetry transformation of half planes
297 x=x*TMath::Sign(1,ix);
300 z = (TMath::Even(islat)) ? -fDz : fDz ;
301 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
305 Int_t AliMUONSegmentationSlat::ISector()
307 // Returns current sector during tracking
310 iregion = fCurrentSlat->ISector();
311 return 100*fSlatIndex+iregion;
314 Int_t AliMUONSegmentationSlat::Sector(Int_t ix, Int_t iy)
316 // Returns sector for pad coordiantes (ix,iy)
317 Int_t ixlocal, iylocal, iregion, islat;
319 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
321 iregion = Slat(islat)->Sector(ixlocal, iylocal);
322 return 100*islat+iregion;
326 void AliMUONSegmentationSlat::SetPad(Int_t ix, Int_t iy)
329 // Sets virtual pad coordinates, needed for evaluating pad response
330 // outside the tracking program
331 Int_t islat, ixlocal, iylocal;
335 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
337 fCurrentSlat=Slat(islat);
338 fCurrentSlat->SetPad(ixlocal, iylocal);
341 void AliMUONSegmentationSlat::SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
343 // Sets current hit coordinates
345 Float_t xlocal, ylocal;
350 GlobalToLocal(xhit,yhit,zhit,islat,xlocal,ylocal);
352 if (islat < 0) printf("\n SetHit: %d", islat);
354 fCurrentSlat=Slat(islat);
355 fCurrentSlat->SetHit(xlocal, ylocal);
359 void AliMUONSegmentationSlat::
360 FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
362 // Initialises iteration over pads for charge distribution algorithm
368 Float_t xlocal, ylocal;
369 GlobalToLocal(xhit, yhit, zhit, islat, xlocal, ylocal);
371 fCurrentSlat=Slat(islat);
372 fCurrentSlat->FirstPad(xlocal, ylocal, dx, dy);
377 void AliMUONSegmentationSlat::NextPad()
379 // Stepper for the iteration over pads
381 fCurrentSlat->NextPad();
385 Int_t AliMUONSegmentationSlat::MorePads()
386 // Stopping condition for the iterator over pads
388 // Are there more pads in the integration region
390 return fCurrentSlat->MorePads();
393 void AliMUONSegmentationSlat::
394 IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
396 // Returns integration limits for current pad
399 fCurrentSlat->IntegrationLimits(x1, x2, y1, y2);
403 void AliMUONSegmentationSlat::
404 Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
406 // Returns list of neighbours of pad with coordinates iX, iY
408 Int_t i, xListLocal[10], yListLocal[10], iXlocal, iYlocal, islat;
412 GlobalToLocal(iX, iY, islat, iXlocal, iYlocal);
414 Slat(islat)->Neighbours(iXlocal, iYlocal, Nlist, xListLocal, yListLocal);
416 for (i=0; i<*Nlist; i++) LocalToGlobal(islat, xListLocal[i], yListLocal[i], Xlist[i], Ylist[i]);
421 Int_t AliMUONSegmentationSlat::Ix()
423 // Return current pad coordinate ix during stepping
425 ixl=fCurrentSlat->Ix();
426 iyl=fCurrentSlat->Iy();
428 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
431 GlobalToLocal(ix, iy, isc, ixc, iyc);
432 Slat(isc)->GetPadC(ixc,iyc,xc,yc);
437 Int_t AliMUONSegmentationSlat::Iy()
439 // Return current pad coordinate iy during stepping
441 ixl=fCurrentSlat->Ix();
442 iyl=fCurrentSlat->Iy();
443 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
449 // Signal Generation Condition during Stepping
450 Int_t AliMUONSegmentationSlat::SigGenCond(Float_t x, Float_t y, Float_t z)
453 // True if signal generation condition fullfilled
454 Float_t xlocal, ylocal;
456 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
457 return Slat(islat)->SigGenCond(xlocal, ylocal, z);
460 // Initialise signal generation at coord (x,y,z)
461 void AliMUONSegmentationSlat::SigGenInit(Float_t x, Float_t y, Float_t z)
463 // Initialize the signal generation condition
465 Float_t xlocal, ylocal;
468 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
469 Slat(islat)->SigGenInit(xlocal, ylocal, z);
474 void AliMUONSegmentationSlat::Init(Int_t chamber)
477 // Initialize slat modules of quadrant +/+
478 // The other three quadrants are handled through symmetry transformations
480 //printf("\n Initialise Segmentation Slat \n");
483 // Initialize Slat modules
487 for (i=0; i<4; i++) ndiv[i]=(*fNDiv)[i];
492 for (i=0; i<15; i++) fSlatX[i]=0.;
494 // Initialize array of slats
495 fSlats = new TObjArray(fNSlats);
496 // Maximum number of strips (pads) in x and y
499 // for each slat in the quadrant (+,+)
500 for (islat=0; islat<fNSlats; islat++) {
501 fSlats->AddAt(CreateSlatModule(),islat);
503 AliMUONSegmentationSlatModule *slat = Slat(islat);
508 slat->SetPadSize(fDpx, fDpy);
509 // Forward wire pitch
510 slat->SetDAnod(fWireD);
511 // Foward segmentation
512 slat->SetPadDivision(ndiv);
513 slat->SetPcbBoards(fPcb[islat]);
514 // Initialize slat module
516 // y-position of slat module relative to the first (closest to the beam)
517 fYPosition[islat]= fYPosOrigin+islat*(fSlatY-2.*fShift);
520 if (slat->Npx() > fNpx) fNpx=slat->Npx();
522 for (isec=0; isec< 4; isec++)
524 fSlatX[islat]+=40.*fPcb[islat][isec];
528 // Set parent chamber number
529 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
530 fChamber=&(pMUON->Chamber(chamber));
538 void AliMUONSegmentationSlat::SetNPCBperSector(Int_t *npcb)
540 // PCB distribution for station 4 (6 rows with 1+3 segmentation regions)
541 for (Int_t islat=0; islat<fNSlats; islat++){
542 fPcb[islat][0] = *(npcb + 4 * islat);
543 fPcb[islat][1] = *(npcb + 4 * islat + 1);
544 fPcb[islat][2] = *(npcb + 4 * islat + 2);
545 fPcb[islat][3] = *(npcb + 4 * islat + 3);
550 void AliMUONSegmentationSlat::SetSlatXPositions(Float_t *xpos)
552 // Set x-positions of Slats
553 for (Int_t islat=0; islat<fNSlats; islat++) fXPosition[islat]=xpos[islat];
556 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::Slat(Int_t index) const
557 //PH { return ((AliMUONSegmentationSlatModule*) (*fSlats)[index]);}
558 { return ((AliMUONSegmentationSlatModule*) fSlats->At(index));}
561 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::
564 // Factory method for slat module
565 return new AliMUONSegmentationSlatModule(4);
569 void AliMUONSegmentationSlat::Draw(const char* opt) const
571 // Draw method for event display
573 if (!strcmp(opt,"eventdisplay")) {
574 const int kColorMUON1 = kYellow;
575 const int kColorMUON2 = kBlue;
577 // Drawing Routines for example for Event Display
580 char nameChamber[9], nameSlat[9], nameNode[9];
583 // Number of modules per slat
584 for (i=0; i<fNSlats; i++) {
586 for (j=0; j<4; j++) npcb[i]+=fPcb[i][j];
589 TNode* top=gAlice->GetGeometry()->GetNode("alice");
590 sprintf(nameChamber,"C_MUON%d",fId+1);
591 new TBRIK(nameChamber,"Mother","void",340,340,5.);
593 sprintf(nameNode,"MUON%d",100+fId+1);
594 TNode* node = new TNode(nameNode,"Chambernode",nameChamber,0,0,fChamber->Z(),"");
596 node->SetLineColor(kBlack);
597 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
598 (pMUON->Nodes())->Add(node);
602 for (j=0; j<fNSlats; j++)
604 sprintf(nameSlat,"SLAT%d",100*fId+1+j);
605 Float_t dx = 20.*npcb[j];
607 new TBRIK(nameSlat,"Slat Module","void",dx,20.,0.25);
609 color = TMath::Even(j) ? kColorMUON1 : kColorMUON2;
611 sprintf(nameNode,"SLAT%d",100*fId+1+j);
613 new TNode(nameNode,"Slat Module",nameSlat, dx+fXPosition[j],fYPosition[j]+dy,0,"");
614 nodeSlat->SetLineColor(color);
616 sprintf(nameNode,"SLAT%d",100*fId+1+j+fNSlats);
618 new TNode(nameNode,"Slat Module",nameSlat,-dx-fXPosition[j],fYPosition[j]+dy,0,"");
619 nodeSlat->SetLineColor(color);