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 1.9 2001/01/17 20:53:40 hristov
19 Destructors corrected to avoid memory leaks
21 Revision 1.8 2000/12/21 22:12:41 morsch
22 Clean-up of coding rule violations,
24 Revision 1.7 2000/11/08 13:01:40 morsch
25 Chamber half-planes of stations 3-5 at different z-positions.
27 Revision 1.6 2000/11/06 09:20:43 morsch
28 AliMUON delegates part of BuildGeometry() to AliMUONSegmentation using the
29 Draw() method. This avoids code and parameter replication.
31 Revision 1.5 2000/10/23 13:37:40 morsch
32 Correct z-position of slat planes.
34 Revision 1.4 2000/10/22 16:55:43 morsch
35 Use only x-symmetry in global to local transformations and delegation.
37 Revision 1.3 2000/10/18 11:42:06 morsch
38 - AliMUONRawCluster contains z-position.
39 - Some clean-up of useless print statements during initialisations.
41 Revision 1.2 2000/10/09 14:06:18 morsch
42 Some type cast problems of type (TMath::Sign((Float_t)1.,x)) corrected (P.H.)
44 Revision 1.1 2000/10/06 09:00:47 morsch
45 Segmentation class for chambers built out of slats.
49 #include "AliMUONSegmentationSlat.h"
50 #include "AliMUONSegmentationSlatModule.h"
52 #include "AliMUONChamber.h"
54 #include "TObjArray.h"
59 #include <TGeometry.h>
62 //___________________________________________
63 ClassImp(AliMUONSegmentationSlat)
65 AliMUONSegmentationSlat::AliMUONSegmentationSlat()
67 // Default constructor
69 fNDiv = new TArrayI(4);
74 AliMUONSegmentationSlat::~AliMUONSegmentationSlat(){
75 //PH Delete TObjArrays
82 void AliMUONSegmentationSlat::SetPadSize(Float_t p1, Float_t p2)
84 // Sets the pad (strip) size
90 Float_t AliMUONSegmentationSlat::GetAnod(Float_t xhit) const
92 // Returns for a hit position xhit the position of the nearest anode wire
93 Float_t wire= (xhit>0)? Int_t(xhit/fWireD)+0.5:Int_t(xhit/fWireD)-0.5;
97 Float_t AliMUONSegmentationSlat::Dpx(Int_t isec) const
100 // Returns x-pad size for given sector isec
101 // isec = 100*islat+iregion
103 Int_t islat, iregion;
106 return Slat(islat)->Dpx(iregion);
109 Float_t AliMUONSegmentationSlat::Dpy(Int_t isec) const
112 // Returns y-pad (strip) size for given sector isec
116 void AliMUONSegmentationSlat::SetPadDivision(Int_t ndiv[4])
119 // Defines the pad size perp. to the anode wire (y) for different sectors.
120 // Pad sizes are defined as integral fractions ndiv of a basis pad size
123 for (Int_t i=0; i<4; i++) {
128 void AliMUONSegmentationSlat::GlobalToLocal(
129 Float_t x, Float_t y, Float_t z, Int_t &islat, Float_t &xlocal, Float_t &ylocal)
132 // Perform local to global transformation for space coordinates
137 // Transform According to slat plane z-position: negative side is shifted down
138 // positive side is shifted up
139 // by half the overlap
140 zlocal = z-fChamber->Z();
141 zlocal = (x>0) ? zlocal-2.*fDz : zlocal+2.*fDz;
142 // Set the signs for the symmetry transformation and transform to first quadrant
144 Float_t xabs=TMath::Abs(x);
146 Int_t ifirst = (zlocal < Float_t(0))? 0:1;
149 for (i=ifirst; i<fNSlats; i+=2) {
151 if ((y >= fYPosition[i]) && (y < fYPosition[i]+fSlatY)) break;
155 // Transform to local coordinate system
158 ylocal = y -fYPosition[index];
159 xlocal = xabs-fXPosition[index];
161 if (i >= fNSlats) {islat = -1; x=-1; y = -1;}
164 void AliMUONSegmentationSlat::GlobalToLocal(
165 Int_t ix, Int_t iy, Int_t &islat, Int_t &ixlocal, Int_t &iylocal)
168 // Perform global to local transformation for pad coordinates
176 // Find slat number (index) and iylocal
177 for (Int_t i=0; i<fNSlats; i++) {
178 iytemp-=Slat(i)->Npy();
181 if (iytemp <= 0) break;
186 ixlocal=TMath::Abs(ix);
190 void AliMUONSegmentationSlat::
191 LocalToGlobal(Int_t islat, Float_t xlocal, Float_t ylocal, Float_t &x, Float_t &y, Float_t &z)
193 // Transform from local to global space coordinates
195 // upper plane (y>0) even slat number is shifted down
196 // upper plane (y>0) odd slat number is shifted up
197 // lower plane (y<0) even slat number is shifted up
198 // lower plane (y<0) odd slat number is shifted down
201 x = (xlocal+fXPosition[islat])*fSym;
202 y=(ylocal+fYPosition[islat]);
204 z = (TMath::Even(islat)) ? -fDz : fDz ;
205 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
211 void AliMUONSegmentationSlat::LocalToGlobal(
212 Int_t islat, Int_t ixlocal, Int_t iylocal, Int_t &ix, Int_t &iy)
214 // Transform from local to global pad coordinates
220 // Find slat number (index) and iylocal
221 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
228 void AliMUONSegmentationSlat::SetSymmetry(Int_t ix)
230 // Set set signs for symmetry transformation
231 fSym=TMath::Sign(1,ix);
234 void AliMUONSegmentationSlat::SetSymmetry(Float_t x)
236 // Set set signs for symmetry transformation
237 fSym=Int_t (TMath::Sign((Float_t)1.,x));
240 void AliMUONSegmentationSlat::
241 GetPadI(Float_t x, Float_t y, Float_t z, Int_t &ix, Int_t &iy)
243 // Returns pad coordinates for given set of space coordinates
246 Float_t xlocal, ylocal;
248 GlobalToLocal(x,y,z,islat,xlocal,ylocal);
253 Slat(islat)->GetPadI(xlocal, ylocal, ix, iy);
254 for (i=0; i<islat; i++) iy+=Slat(islat)->Npy();
256 ix=ix*Int_t(TMath::Sign((Float_t)1.,x));
260 void AliMUONSegmentationSlat::
261 GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y, Float_t &z)
263 // Returns real coordinates (x,y) for given pad coordinates (ix,iy)
265 Int_t islat, ixlocal, iylocal;
267 // Delegation of transforamtion to slat
268 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
269 Slat(islat)->GetPadC(ixlocal, iylocal, x, y);
271 x+=fXPosition[islat];
272 y+=fYPosition[islat];
274 // Symmetry transformation of half planes
275 x=x*TMath::Sign(1,ix);
278 z = (TMath::Even(islat)) ? -fDz : fDz ;
279 z = (x>0) ? z+2.*fDz : z-2.*fDz ;
283 Int_t AliMUONSegmentationSlat::ISector()
285 // Returns current sector during tracking
288 iregion = fCurrentSlat->ISector();
289 return 100*fSlatIndex+iregion;
292 Int_t AliMUONSegmentationSlat::Sector(Int_t ix, Int_t iy)
294 // Returns sector for pad coordiantes (ix,iy)
295 Int_t ixlocal, iylocal, iregion, islat;
297 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
299 iregion = Slat(islat)->Sector(ixlocal, iylocal);
300 return 100*islat+iregion;
304 void AliMUONSegmentationSlat::SetPad(Int_t ix, Int_t iy)
307 // Sets virtual pad coordinates, needed for evaluating pad response
308 // outside the tracking program
309 Int_t islat, ixlocal, iylocal;
313 GlobalToLocal(ix,iy,islat,ixlocal,iylocal);
315 fCurrentSlat=Slat(islat);
316 fCurrentSlat->SetPad(ixlocal, iylocal);
319 void AliMUONSegmentationSlat::SetHit(Float_t xhit, Float_t yhit, Float_t zhit)
321 // Sets current hit coordinates
323 Float_t xlocal, ylocal;
328 GlobalToLocal(xhit,yhit,zhit,islat,xlocal,ylocal);
330 if (islat < 0) printf("\n SetHit: %d", islat);
332 fCurrentSlat=Slat(islat);
333 fCurrentSlat->SetHit(xlocal, ylocal);
337 void AliMUONSegmentationSlat::
338 FirstPad(Float_t xhit, Float_t yhit, Float_t zhit, Float_t dx, Float_t dy)
340 // Initialises iteration over pads for charge distribution algorithm
346 Float_t xlocal, ylocal;
347 GlobalToLocal(xhit, yhit, zhit, islat, xlocal, ylocal);
349 fCurrentSlat=Slat(islat);
350 fCurrentSlat->FirstPad(xlocal, ylocal, dx, dy);
355 void AliMUONSegmentationSlat::NextPad()
357 // Stepper for the iteration over pads
359 fCurrentSlat->NextPad();
363 Int_t AliMUONSegmentationSlat::MorePads()
364 // Stopping condition for the iterator over pads
366 // Are there more pads in the integration region
368 return fCurrentSlat->MorePads();
371 void AliMUONSegmentationSlat::
372 IntegrationLimits(Float_t& x1,Float_t& x2,Float_t& y1, Float_t& y2)
374 // Returns integration limits for current pad
377 fCurrentSlat->IntegrationLimits(x1, x2, y1, y2);
381 void AliMUONSegmentationSlat::
382 Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10])
384 // Returns list of neighbours of pad with coordinates iX, iY
386 Int_t i, xListLocal[10], yListLocal[10], iXlocal, iYlocal, islat;
390 GlobalToLocal(iX, iY, islat, iXlocal, iYlocal);
392 Slat(islat)->Neighbours(iXlocal, iYlocal, Nlist, xListLocal, yListLocal);
394 for (i=0; i<*Nlist; i++) LocalToGlobal(islat, xListLocal[i], yListLocal[i], Xlist[i], Ylist[i]);
399 Int_t AliMUONSegmentationSlat::Ix()
401 // Return current pad coordinate ix during stepping
403 ixl=fCurrentSlat->Ix();
404 iyl=fCurrentSlat->Iy();
406 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
409 GlobalToLocal(ix, iy, isc, ixc, iyc);
410 Slat(isc)->GetPadC(ixc,iyc,xc,yc);
415 Int_t AliMUONSegmentationSlat::Iy()
417 // Return current pad coordinate iy during stepping
419 ixl=fCurrentSlat->Ix();
420 iyl=fCurrentSlat->Iy();
421 LocalToGlobal(fSlatIndex, ixl, iyl, ix, iy);
427 // Signal Generation Condition during Stepping
428 Int_t AliMUONSegmentationSlat::SigGenCond(Float_t x, Float_t y, Float_t z)
431 // True if signal generation condition fullfilled
432 Float_t xlocal, ylocal;
434 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
435 return Slat(islat)->SigGenCond(xlocal, ylocal, z);
438 // Initialise signal generation at coord (x,y,z)
439 void AliMUONSegmentationSlat::SigGenInit(Float_t x, Float_t y, Float_t z)
441 // Initialize the signal generation condition
443 Float_t xlocal, ylocal;
446 GlobalToLocal(x, y, z, islat, xlocal, ylocal);
447 Slat(islat)->SigGenInit(xlocal, ylocal, z);
452 void AliMUONSegmentationSlat::Init(Int_t chamber)
455 // Initialize slat modules of quadrant +/+
456 // The other three quadrants are handled through symmetry transformations
458 printf("\n Initialise Segmentation Slat \n");
461 // Initialize Slat modules
465 for (i=0; i<4; i++) ndiv[i]=(*fNDiv)[i];
470 for (i=0; i<15; i++) fSlatX[i]=0.;
472 // Initialize array of slats
473 fSlats = new TObjArray(fNSlats);
474 // Maximum number of strips (pads) in x and y
477 // for each slat in the quadrant (+,+)
478 for (islat=0; islat<fNSlats; islat++) {
479 (*fSlats)[islat] = CreateSlatModule();
481 AliMUONSegmentationSlatModule *slat = Slat(islat);
486 slat->SetPadSize(fDpx, fDpy);
487 // Forward wire pitch
488 slat->SetDAnod(fWireD);
489 // Foward segmentation
490 slat->SetPadDivision(ndiv);
491 slat->SetPcbBoards(fPcb[islat]);
492 // Initialize slat module
494 // y-position of slat module relative to the first (closest to the beam)
495 fYPosition[islat]= fYPosOrigin+islat*(fSlatY-2.*fShift);
498 if (slat->Npx() > fNpx) fNpx=slat->Npx();
500 for (isec=0; isec< 4; isec++)
502 fSlatX[islat]+=40.*fPcb[islat][isec];
506 // Set parent chamber number
507 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
508 fChamber=&(pMUON->Chamber(chamber));
516 void AliMUONSegmentationSlat::SetNPCBperSector(Int_t *npcb)
518 // PCB distribution for station 4 (6 rows with 1+3 segmentation regions)
519 for (Int_t islat=0; islat<fNSlats; islat++){
520 fPcb[islat][0] = *(npcb + 4 * islat);
521 fPcb[islat][1] = *(npcb + 4 * islat + 1);
522 fPcb[islat][2] = *(npcb + 4 * islat + 2);
523 fPcb[islat][3] = *(npcb + 4 * islat + 3);
528 void AliMUONSegmentationSlat::SetSlatXPositions(Float_t *xpos)
530 // Set x-positions of Slats
531 for (Int_t islat=0; islat<fNSlats; islat++) fXPosition[islat]=xpos[islat];
534 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::Slat(Int_t index) const
535 { return ((AliMUONSegmentationSlatModule*) (*fSlats)[index]);}
538 AliMUONSegmentationSlatModule* AliMUONSegmentationSlat::
541 // Factory method for slat module
542 return new AliMUONSegmentationSlatModule();
546 void AliMUONSegmentationSlat::Draw(const char* opt) const
548 // Draw method for event display
550 if (!strcmp(opt,"eventdisplay")) {
551 const int kColorMUON1 = kYellow;
552 const int kColorMUON2 = kBlue;
554 // Drawing Routines for example for Event Display
557 char nameChamber[9], nameSlat[9], nameNode[9];
560 // Number of modules per slat
561 for (i=0; i<fNSlats; i++) {
563 for (j=0; j<4; j++) npcb[i]+=fPcb[i][j];
566 TNode* top=gAlice->GetGeometry()->GetNode("alice");
567 sprintf(nameChamber,"C_MUON%d",fId+1);
568 new TBRIK(nameChamber,"Mother","void",340,340,5.);
570 sprintf(nameNode,"MUON%d",100+fId+1);
571 TNode* node = new TNode(nameNode,"Chambernode",nameChamber,0,0,fChamber->Z(),"");
573 node->SetLineColor(kBlack);
574 AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON");
575 (pMUON->Nodes())->Add(node);
579 for (j=0; j<fNSlats; j++)
581 sprintf(nameSlat,"SLAT%d",100*fId+1+j);
582 Float_t dx = 20.*npcb[j];
584 new TBRIK(nameSlat,"Slat Module","void",dx,20.,0.25);
586 color = TMath::Even(j) ? kColorMUON1 : kColorMUON2;
588 sprintf(nameNode,"SLAT%d",100*fId+1+j);
590 new TNode(nameNode,"Slat Module",nameSlat, dx+fXPosition[j],fYPosition[j]+dy,0,"");
591 nodeSlat->SetLineColor(color);
593 sprintf(nameNode,"SLAT%d",100*fId+1+j+fNSlats);
595 new TNode(nameNode,"Slat Module",nameSlat,-dx-fXPosition[j],fYPosition[j]+dy,0,"");
596 nodeSlat->SetLineColor(color);