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 **************************************************************************/
19 #include <TObjArray.h>
23 #include <TGeometry.h>
25 #include "AliMUONSegmentationSlat.h"
26 #include "AliMUONSegmentationSlatModule.h"
28 #include "AliMUONChamber.h"
30 #include "AliMUONConstants.h"
31 //___________________________________________
32 ClassImp(AliMUONSegmentationSlat)
34 AliMUONSegmentationSlat::AliMUONSegmentationSlat()
37 // Default constructor
44 AliMUONSegmentationSlat::AliMUONSegmentationSlat(Int_t /*nsec*/)
47 // Non default constructor
49 fNDiv = new TArrayI(4);
54 AliMUONSegmentationSlat::AliMUONSegmentationSlat(const AliMUONSegmentationSlat& rhs)
55 : AliSegmentation(rhs)
57 // Protected copy constructor
59 Fatal("AliMUONSegmentationSlatModule", "Not implemented.");
62 AliMUONSegmentationSlat::~AliMUONSegmentationSlat(){
63 //PH Delete TObjArrays
75 //----------------------------------------------------------------------
76 AliMUONSegmentationSlat&
77 AliMUONSegmentationSlat::operator=(const AliMUONSegmentationSlat& rhs)
79 // Protected assignement operator
81 if (this == &rhs) return *this;
83 Fatal("operator=", "Not implemented.");
88 //-----------------------------------------------------------
89 void AliMUONSegmentationSlat::SetPadSize(Float_t p1, Float_t p2)
91 // Sets the pad (strip) size
97 //-----------------------------------------------------------
98 Float_t AliMUONSegmentationSlat::GetAnod(Float_t xhit) const
100 // Returns for a hit position xhit the position of the nearest anode wire
101 Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5;
105 //-----------------------------------------------------------
106 void AliMUONSegmentationSlat::GetNParallelAndOffset(Int_t /*iX*/, Int_t /*iY*/, Int_t *Nparallel, Int_t *Offset)
111 //-----------------------------------------------------------
112 void AliMUONSegmentationSlat::GiveTestPoints(Int_t & /*n*/, Float_t */*x*/, Float_t */*y*/) const
115 //-----------------------------------------------------------
116 Float_t AliMUONSegmentationSlat::Distance2AndOffset(Int_t /*iX*/, Int_t /*iY*/, Float_t /*X*/, Float_t /*Y*/, Int_t * /*dummy*/)
121 //-----------------------------------------------------------
122 Float_t AliMUONSegmentationSlat::Dpx(Int_t isec) const
125 // Returns x-pad size for given sector isec
126 // isec = 100*islat+iregion
128 Int_t islat, iregion;
131 return Slat(islat)->Dpx(iregion);
134 Float_t AliMUONSegmentationSlat::Dpy(Int_t /*isec*/) const
137 // Returns y-pad (strip) size for given sector isec
141 void AliMUONSegmentationSlat::SetPadDivision(Int_t ndiv[4])
144 // Defines the pad size perp. to the anode wire (y) for different sectors.
145 // Pad sizes are defined as integral fractions ndiv of a basis pad size
148 for (Int_t i = 0; i < 4; i++) {
149 (*fNDiv)[i] = ndiv[i];
153 void AliMUONSegmentationSlat::GlobalToLocal(
154 Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal)
157 // Perform local to global transformation for space coordinates
164 // Transform According to slat plane z-position: negative side is shifted down
165 // positive side is shifted up
166 // by half the overlap
167 zlocal = z-fChamber->Z();
169 // zlocal = (x>0) ? zlocal-2.*fDz : zlocal+2.*fDz;
170 // zlocal = (x>0) ? zlocal+2.*fDz : zlocal-2.*fDz; //Change?
175 // Set the signs for the symmetry transformation and transform to first quadrant
177 Float_t xabs = TMath::Abs(x);
181 for (i = 0; i < fNSlats; i++) { //Loop on all slats (longuer but more secure)
183 if ((y >= fYPosition[i]-eps) && (y <= fYPosition[i]+fSlatY+eps)) break;
187 // Transform to local coordinate system
190 if (index >= fNSlats || index < 0 ) {
196 xlocal = xabs - fXPosition[index];
197 ylocal = y - fYPosition[index];
200 //_________________________________________________
201 void AliMUONSegmentationSlat::GlobalToLocal(
202 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal) const
205 // Perform global to local transformation for pad coordinates
213 // Find slat number (index) and iylocal
214 for (Int_t i=0; i<fNSlats; i++) {
215 iytemp-=Slat(i)->Npy();
217 if (iytemp <= 0) break;
221 ixlocal=TMath::Abs(ix);
225 //_________________________________________________
226 void AliMUONSegmentationSlat::
227 LocalToGlobal(Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z) const
229 // Transform from local to global space coordinates
231 // upper plane (y>0) even slat number is shifted down
232 // upper plane (y>0) odd slat number is shifted up
233 // lower plane (y<0) even slat number is shifted up
234 // lower plane (y<0) odd slat number is shifted down
237 x = (xlocal + fXPosition[islat])*fSym;
238 y = (ylocal + fYPosition[islat]);
240 // z = (TMath::Even(islat)) ? fDz : -fDz ; //Change for new referential
241 // z = (x>0) ? z+2.*fDz : z-2.*fDz ;
245 z = (TMath::Even(islat)) ? -fDzSlat : fDzSlat ; //Change for new referential
246 z = (x>0) ? -z + fDzCh : z - fDzCh;
251 //_________________________________________________
252 void AliMUONSegmentationSlat::LocalToGlobal (
253 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy) const
255 // Transform from local to global pad coordinates
261 // Find slat number (index) and iylocal
262 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
268 //_________________________________________________
269 void AliMUONSegmentationSlat::SetSymmetry(Int_t ix)
271 // Set set signs for symmetry transformation
272 fSym = TMath::Sign(1,ix);
275 //_________________________________________________
276 void AliMUONSegmentationSlat::SetSymmetry(Float_t x)
278 // Set set signs for symmetry transformation
279 fSym = Int_t (TMath::Sign((Float_t)1.,x));
282 //_________________________________________________
283 void AliMUONSegmentationSlat::
284 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
286 // Returns pad coordinates for given set of space coordinates
289 Float_t xlocal, ylocal;
291 GlobalToLocal(x,y,z,islat,xlocal,ylocal);
297 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
298 for (i = 0; i < islat; i++) iy += Slat(islat)->Npy();
300 ix = ix*Int_t(TMath::Sign((Float_t)1.,x));
303 //_________________________________________________
304 void AliMUONSegmentationSlat::
305 GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
307 // Returns real coordinates (x,y) for given pad coordinates (ix,iy)
309 Int_t islat, ixlocal, iylocal;
311 // Delegation of transforamtion to slat
312 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
313 Slat(islat)->GetPadC(ixlocal, iylocal, x, y);
315 x += fXPosition[islat];
316 y += fYPosition[islat];
318 // Symmetry transformation of half planes
319 x = x * TMath::Sign(1,ix);
322 z = (TMath::Even(islat)) ? -fDzSlat : fDzSlat ; //Change for new referential
323 z = (x>0) ? -z + fDzCh : z - fDzCh;
327 //_________________________________________________
328 Int_t AliMUONSegmentationSlat::ISector()
330 // Returns current sector during tracking
333 iregion = fCurrentSlat->ISector();
334 return 100*fSlatIndex+iregion;
337 //_________________________________________________
338 Int_t AliMUONSegmentationSlat::Sector(Int_t ix, Int_t iy)
340 // Returns sector for pad coordiantes (ix,iy)
341 Int_t ixlocal, iylocal, iregion, islat;
343 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
345 iregion = Slat(islat)->Sector(ixlocal, iylocal);
346 return 100*islat+iregion;
349 //_________________________________________________
350 void AliMUONSegmentationSlat::SetPad(Int_t ix, Int_t iy)
353 // Sets virtual pad coordinates, needed for evaluating pad response
354 // outside the tracking program
355 Int_t islat, ixlocal, iylocal;
359 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
361 fCurrentSlat=Slat(islat);
362 fCurrentSlat->SetPad(ixlocal, iylocal);
365 //_________________________________________________
366 void AliMUONSegmentationSlat::SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
368 // Sets current hit coordinates
370 Float_t xlocal, ylocal;
375 GlobalToLocal(xhit,yhit,zhit,islat,xlocal,ylocal);
377 if (islat < 0) printf("\n SetHit: %d", islat);
379 fCurrentSlat=Slat(islat);
380 fCurrentSlat->SetHit(xlocal, ylocal);
383 //_________________________________________________
384 void AliMUONSegmentationSlat::
385 FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
387 // Initialises iteration over pads for charge distribution algorithm
392 Float_t xlocal, ylocal;
393 GlobalToLocal(xhit, yhit, zhit, islat, xlocal, ylocal);
396 fCurrentSlat=Slat(islat);
397 fCurrentSlat->FirstPad(xlocal, ylocal, dx, dy);
402 //_________________________________________________
403 void AliMUONSegmentationSlat::NextPad()
405 // Stepper for the iteration over pads
407 fCurrentSlat->NextPad();
410 //_________________________________________________
411 Int_t AliMUONSegmentationSlat::MorePads()
412 // Stopping condition for the iterator over pads
414 // Are there more pads in the integration region
416 return fCurrentSlat->MorePads();
419 //_________________________________________________
420 void AliMUONSegmentationSlat::
421 IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
423 // Returns integration limits for current pad
426 fCurrentSlat->IntegrationLimits(x1, x2, y1, y2);
430 //_________________________________________________
431 void AliMUONSegmentationSlat::
432 Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
434 // Returns list of neighbours of pad with coordinates iX, iY
436 Int_t i, xListLocal[10], yListLocal[10], iXlocal, iYlocal, islat;
440 GlobalToLocal(iX, iY, islat, iXlocal, iYlocal);
442 Slat(islat)->Neighbours(iXlocal, iYlocal, Nlist, xListLocal, yListLocal);
444 for (i=0; i<*Nlist; i++) LocalToGlobal(islat, xListLocal[i], yListLocal[i], Xlist[i], Ylist[i]);
448 //_________________________________________________
449 Int_t AliMUONSegmentationSlat::Ix()
451 // Return current pad coordinate ix during stepping
453 ixl=fCurrentSlat->Ix();
454 iyl=fCurrentSlat->Iy();
455 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
459 GlobalToLocal(ix, iy, isc, ixc, iyc);
461 Slat(isc)->GetPadC(ixc,iyc,xc,yc);
465 //_________________________________________________
466 Int_t AliMUONSegmentationSlat::Iy()
468 // Return current pad coordinate iy during stepping
470 ixl=fCurrentSlat->Ix();
471 iyl=fCurrentSlat->Iy();
472 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
476 //_________________________________________________
477 Int_t AliMUONSegmentationSlat::SigGenCond(Float_t x, Float_t y, Float_t z)
479 // Signal Generation Condition during Stepping
481 // True if signal generation condition fullfilled
482 Float_t xlocal, ylocal;
484 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
485 return Slat(islat)->SigGenCond(xlocal, ylocal, z);
488 //_________________________________________________
489 void AliMUONSegmentationSlat::SigGenInit(Float_t x, Float_t y, Float_t z)
492 // Initialize the signal generation condition
494 Float_t xlocal, ylocal;
497 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
498 Slat(islat)->SigGenInit(xlocal, ylocal, z);
501 //_________________________________________________
502 void AliMUONSegmentationSlat::Init(Int_t chamber)
505 // Initialize slat modules of quadrant +/+
506 // The other three quadrants are handled through symmetry transformations
508 //printf("\n Initialise Segmentation Slat \n");
511 // Initialize Slat modules
515 for (i=0; i<4; i++) ndiv[i]=(*fNDiv)[i];
519 for (i=0; i<15; i++) fSlatX[i]=0.;
521 // shifts in z direction
522 fDzSlat = AliMUONConstants::DzSlat();
523 fDzCh = AliMUONConstants::DzCh();
525 // Initialize array of slats
526 fSlats = new TObjArray(fNSlats);
527 // Maximum number of strips (pads) in x and y
530 // for each slat in the quadrant (+,+)
531 for (islat=0; islat<fNSlats; islat++) {
532 fSlats->AddAt(CreateSlatModule(),islat);
534 AliMUONSegmentationSlatModule *slat = Slat(islat);
539 slat->SetPadSize(fDpx, fDpy);
540 // Forward wire pitch
541 slat->SetDAnod(fWireD);
542 // Foward segmentation
543 slat->SetPadDivision(ndiv);
544 slat->SetPcbBoards(fPcb[islat]);
545 // Initialize slat module
547 // y-position of slat module relative to the first (closest to the beam)
548 // fYPosition[islat]= fYPosOrigin+islat*(fSlatY-2.*fShift);
551 if (slat->Npx() > fNpx) fNpx=slat->Npx();
553 for (isec=0; isec< 4; isec++)
555 fSlatX[islat]+=40.*fPcb[islat][isec];
559 // Set parent chamber number
560 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
561 fChamber=&(pMUON->Chamber(chamber));
565 //_________________________________________________
566 void AliMUONSegmentationSlat::SetNPCBperSector(Int_t *npcb)
568 // PCB distribution for station 4 (6 rows with 1+3 segmentation regions)
569 for (Int_t islat=0; islat<fNSlats; islat++){
570 fPcb[islat][0] = *(npcb + 4 * islat);
571 fPcb[islat][1] = *(npcb + 4 * islat + 1);
572 fPcb[islat][2] = *(npcb + 4 * islat + 2);
573 fPcb[islat][3] = *(npcb + 4 * islat + 3);
577 //_________________________________________________
578 void AliMUONSegmentationSlat::SetSlatXPositions(Float_t *xpos)
580 // Set x-positions of Slats
581 for (Int_t islat=0; islat<fNSlats; islat++) fXPosition[islat]=xpos[islat];
584 //_________________________________________________
585 void AliMUONSegmentationSlat::SetSlatYPositions(Float_t *ypos)
587 // Set y-positions of Slats
588 for (Int_t islat=0; islat<fNSlats; islat++) fYPosition[islat]=ypos[islat];
591 //_________________________________________________
592 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::Slat(Int_t index) const
593 //PH { return ((AliMUONSegmentationSlatModule*) (*fSlats)[index]);}
595 return ((AliMUONSegmentationSlatModule*) fSlats->At(index));
598 //_________________________________________________
599 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::
600 CreateSlatModule() const
602 // Factory method for slat module
603 return new AliMUONSegmentationSlatModule(4);
606 //_________________________________________________
607 void AliMUONSegmentationSlat::Draw(const char* opt)
609 // Draw method for event display
611 if (!strcmp(opt,"eventdisplay")) {
612 const int kColorMUON1 = kYellow;
613 const int kColorMUON2 = kBlue;
615 // Drawing Routines for example for Event Display
618 char nameChamber[9], nameSlat[9], nameNode[9];
621 // Number of modules per slat
622 for (i = 0; i < fNSlats; i++) {
624 for (j = 0; j < 4; j++) npcb[i] += fPcb[i][j];
627 TNode* top=gAlice->GetGeometry()->GetNode("alice");
628 sprintf(nameChamber,"C_MUON%d",fId+1);
629 new TBRIK(nameChamber,"Mother","void",340,340,5.);
631 sprintf(nameNode,"MUON%d",100+fId+1);
632 TNode* node = new TNode(nameNode,"Chambernode",nameChamber,0,0,fChamber->Z(),"");
634 node->SetLineColor(kBlack);
635 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
636 (pMUON->Nodes())->Add(node);
640 for (j = 0; j < fNSlats; j++) {
641 sprintf(nameSlat,"SLAT%d",100*fId+1+j);
642 Float_t dx = 20.*npcb[j];
644 new TBRIK(nameSlat,"Slat Module","void",dx,20.,0.25);
646 color = TMath::Even(j) ? kColorMUON1 : kColorMUON2;
648 sprintf(nameNode,"SLAT%d",100*fId+1+j);
650 new TNode(nameNode,"Slat Module",nameSlat, dx+fXPosition[j],fYPosition[j]+dy,0,"");
651 nodeSlat->SetLineColor(color);
653 sprintf(nameNode,"SLAT%d",100*fId+1+j+fNSlats);
655 new TNode(nameNode,"Slat Module",nameSlat,-dx-fXPosition[j],fYPosition[j]+dy,0,"");
656 nodeSlat->SetLineColor(color);