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New files: import hits from FPD, PMD and VZERO.
[u/mrichter/AliRoot.git] / TOF / AliTOFGeometryV4.cxx
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d3c7bfac 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$Log$
0e46b9ae 18Revision 1.4 2006/04/16 22:29:05 hristov
19Coding conventions (Annalisa)
20
7aeeaf38 21Revision 1.3 2006/03/12 14:38:13 arcelli
22 Changes for TOF Reconstruction using TGeo
23
a6a9820c 24Revision 1.2 2006/02/28 10:38:00 decaro
25AliTOFGeometry::fAngles, AliTOFGeometry::fHeights, AliTOFGeometry::fDistances arrays: dimension definition in the right location
26
4402e7cb 27Revision 1.1 2005/12/15 08:55:33 decaro
28New TOF geometry description (V5) -G. Cara Romeo and A. De Caro
29
d3c7bfac 30Revision 0.1 2005/07/19 A. De Caro
31 Modify Global methods IsInsideThePad & DistanceToPad
32 according to the PPR TOF geometry
33 Implement Global methods GetPadDx & GetPadDy & GetPadDz
34 Modify Global methods GetDetID & GetPlate & GetSector &
35 GetStrip & GetPadX & GetPadZ
36 according to the PPR TOF geometry
37 Modify Global methods GetPos & GetX & GetY & GetZ
38 according to the PPR TOF geometry
39*/
40
d3c7bfac 41///////////////////////////////////////////////////////////////////////////////
42// //
43// TOF Geometry class (PPR version) //
44// //
45///////////////////////////////////////////////////////////////////////////////
46
0e46b9ae 47#include "TGeoManager.h"
48
d3c7bfac 49#include "AliConst.h"
0e46b9ae 50#include "AliLog.h"
d3c7bfac 51
d3c7bfac 52#include "AliTOFGeometryV4.h"
53
0e46b9ae 54extern TGeoManager *gGeoManager;
55
d3c7bfac 56ClassImp(AliTOFGeometryV4)
57
d3c7bfac 58
59const Float_t AliTOFGeometryV4::fgkZlenA = 106.0; // length (cm) of the A module
60const Float_t AliTOFGeometryV4::fgkZlenB = 141.0; // length (cm) of the B module
61const Float_t AliTOFGeometryV4::fgkZlenC = 177.5; // length (cm) of the C module
62const Float_t AliTOFGeometryV4::fgkMaxhZtof = 371.5; // Max half z-size of TOF (cm)
d3c7bfac 63
64const Float_t AliTOFGeometryV4::fgkDeadBndX = 1.0; // Dead Boundaries of a Strip along X direction (length) (cm)
65const Float_t AliTOFGeometryV4::fgkDeadBndZ = 1.5; // Dead Boundaries of a Strip along Z direction (width) (cm)
66const Float_t AliTOFGeometryV4::fgkOverSpc = 15.3; // Space available for sensitive layers in radial direction (cm)
67
68const Float_t AliTOFGeometryV4::fgkDprecMin = 0.0000075;//num.prec.tolerance on Thmin
69const Float_t AliTOFGeometryV4::fgkDprecMax = 0.0000100;//num.prec.tolerance on Thma
70const Float_t AliTOFGeometryV4::fgkDprecCen = 0.0000005;//num.prec.tolerance on <Theta>
71
72const Float_t AliTOFGeometryV4::fgkxTOF = 371.; // Inner radius of the TOF for Reconstruction (cm)
73const Float_t AliTOFGeometryV4::fgkRmin = 370.; // Inner radius of the TOF (cm)
74const Float_t AliTOFGeometryV4::fgkRmax = 399.; // Outer radius of the TOF (cm)
75
76//_____________________________________________________________________________
77AliTOFGeometryV4::AliTOFGeometryV4()
78 :AliTOFGeometry()
79{
80 //
81 // AliTOFGeometryV4 default constructor
82 //
83
7aeeaf38 84 AliTOFGeometry::fNStripC = kNStripC; // number of strips in C type module
d3c7bfac 85
7aeeaf38 86 AliTOFGeometry::fZlenA = fgkZlenA; // length (cm) of the A module
87 AliTOFGeometry::fZlenB = fgkZlenB; // length (cm) of the B module
88 AliTOFGeometry::fZlenC = fgkZlenC; // length (cm) of the C module
89 AliTOFGeometry::fMaxhZtof = fgkMaxhZtof; // Max half z-size of TOF (cm)
d3c7bfac 90
7aeeaf38 91 AliTOFGeometry::fxTOF = fgkxTOF; // Inner radius of the TOF for Reconstruction (cm)
92 AliTOFGeometry::fRmin = fgkRmin; // Inner radius of the TOF (cm)
93 AliTOFGeometry::fRmax = fgkRmax; // Outer radius of the TOF (cm)
d3c7bfac 94
95 Init();
96
97}
98
99//_____________________________________________________________________________
100AliTOFGeometryV4::~AliTOFGeometryV4()
101{
102 //
103 // AliTOFGeometryV4 destructor
104 //
105
106}
107//_____________________________________________________________________________
a6a9820c 108void AliTOFGeometryV4::ImportGeometry(){
109 TGeoManager::Import("geometry.root");
110}
111//_____________________________________________________________________________
d3c7bfac 112void AliTOFGeometryV4::Init()
113{
114 //
115 // Initialize strip Tilt Angles and Heights
116 //
117 // Strips Tilt Angles
118
7aeeaf38 119 fPhiSec = 360./kNSectors;
120
d3c7bfac 121 Float_t const kangles[kNPlates][kMaxNstrip] ={
122
123 {44.494, 43.725, 42.946, 42.156, 41.357, 40.548, 39.729, 38.899,
124 38.060, 37.211, 36.353, 35.484, 34.606, 33.719, 32.822, 31.916,
125 31.001, 30.077, 29.144, 28.202 },
126
127 {26.884, 25.922, 24.952, 23.975, 22.989, 22.320, 21.016, 20.309,
128 19.015, 18.270, 16.989, 16.205, 14.941, 14.117, 12.871, 12.008,
129 10.784, 9.8807, 8.681, 0.0 },
130
131 { 7.5835, 6.4124, 5.4058, 4.2809, 3.2448, 2.1424, 1.078, -0., -1.078,
132 -2.1424, -3.2448, -4.2809, -5.4058, -6.4124, -7.5835, 0.0, 0.0, 0.0,
133 0.0, 0.0 },
134
135 {-8.681, -9.8807, -10.784, -12.008, -12.871, -14.117, -14.941, -16.205,
136 -16.989, -18.27, -19.015, -20.309, -21.016, -22.32, -22.989,
137 -23.975, -24.952, -25.922, -26.884, 0. },
138
139 {-28.202, -29.144, -30.077, -31.001, -31.916, -32.822, -33.719, -34.606,
140 -35.484, -36.353, -37.211, -38.06, -38.899, -39.729, -40.548,
141 -41.357, -42.156, -42.946, -43.725, -44.494 }};
142
143
144 //Strips Heights
145
146 Float_t const kheights[kNPlates][kMaxNstrip]= {
147
148 {-5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5,
149 -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5 },
150
151 {-6.3, -7.1, -7.9, -8.7, -9.5, -3, -9.5, -3, -9.5, -3,
152 -9.5, -3.0, -9.5, -3.0, -9.5, -3, -9.5, -3, -9 , 0.},
153
154 { -3, -9, -4.5, -9, -4.5, -9, -4.5, -9, -4.5, -9,
155 -4.5, -9, -4.5, -9, -3, 0.0, 0.0, 0.0, 0.0, 0.0 },
156
157 { -9, -3, -9.5, -3, -9.5, -3, -9.5, -3, -9.5, -3, -9.5,
158 -3, -9.5, -3, -9.5, -8.7, -7.9, -7.1, -6.3, 0. },
159
160 {-5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5,
161 -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5 }};
162
163 // Deposit in fAngles, fHeights
164
d3c7bfac 165 for (Int_t iplate = 0; iplate < kNPlates; iplate++) {
166 for (Int_t istrip = 0; istrip < kMaxNstrip; istrip++) {
167 AliTOFGeometry::fAngles[iplate][istrip] = kangles[iplate][istrip];
168 AliTOFGeometry::fHeights[iplate][istrip] = kheights[iplate][istrip];
169 }
170 }
171
172}
173
174//_____________________________________________________________________________
7aeeaf38 175Float_t AliTOFGeometryV4::DistanceToPadPar(Int_t *det, Float_t *pos, Float_t *dist3d) const
d3c7bfac 176{
177//
178// Returns distance of space point with coor pos (x,y,z) (cm) wrt
179// pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
180//
181
182 //Transform pos into Sector Frame
183
184 Float_t x = pos[0];
185 Float_t y = pos[1];
186 Float_t z = pos[2];
187
188 Float_t radius = TMath::Sqrt(x*x+y*y);
189 Float_t phi=TMath::ATan2(y,x);
190 if(phi<0) phi=2.*TMath::Pi()+phi;
191 // Get the local angle in the sector philoc
192 Float_t angle = phi*kRaddeg-( Int_t (kRaddeg*phi/fPhiSec) + 0.5)*fPhiSec;
193 Float_t xs = radius*TMath::Cos(angle/kRaddeg);
194 Float_t ys = radius*TMath::Sin(angle/kRaddeg);
195 Float_t zs = z;
196
197 // Do the same for the selected pad
198
199 Float_t g[3];
a6a9820c 200 GetPosPar(det,g);
d3c7bfac 201
202 Float_t padRadius = TMath::Sqrt(g[0]*g[0]+g[1]*g[1]);
203 Float_t padPhi=TMath::ATan2(g[1],g[0]);
204 if(padPhi<0) padPhi=2.*TMath::Pi()+padPhi;
205 // Get the local angle in the sector philoc
206 Float_t padAngle = padPhi*kRaddeg-( Int_t (padPhi*kRaddeg/fPhiSec)+ 0.5) * fPhiSec;
207 Float_t padxs = padRadius*TMath::Cos(padAngle/kRaddeg);
208 Float_t padys = padRadius*TMath::Sin(padAngle/kRaddeg);
209 Float_t padzs = g[2];
210
211 //Now move to local pad coordinate frame. Translate:
212
213 Float_t xt = xs-padxs;
214 Float_t yt = ys-padys;
215 Float_t zt = zs-padzs;
216 //Now Rotate:
217
218 Float_t alpha = GetAngles(det[1],det[2]);
219 Float_t xr = xt*TMath::Cos(alpha/kRaddeg)+zt*TMath::Sin(alpha/kRaddeg);
220 Float_t yr = yt;
221 Float_t zr = -xt*TMath::Sin(alpha/kRaddeg)+zt*TMath::Cos(alpha/kRaddeg);
222
223 Float_t dist = TMath::Sqrt(xr*xr+yr*yr+zr*zr);
d3c7bfac 224 if (dist3d){
225 dist3d[0] = xr;
226 dist3d[1] = yr;
227 dist3d[2] = zr;
228 }
229
230 return dist;
231
232}
233
234//_____________________________________________________________________________
7aeeaf38 235Bool_t AliTOFGeometryV4::IsInsideThePadPar(Int_t *det, Float_t *pos) const
d3c7bfac 236{
237//
238// Returns true if space point with coor pos (x,y,z) (cm) falls
239// inside pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
240//
241
242 Bool_t isInside=false;
243
244 //Transform pos into Sector Frame
245
246 Float_t x = pos[0];
247 Float_t y = pos[1];
248 Float_t z = pos[2];
249
250 Float_t radius = TMath::Sqrt(x*x+y*y);
251 Float_t phi=TMath::ATan2(y,x);
252 if(phi<0) phi=2.*TMath::Pi()+phi;
253 // Get the local angle in the sector philoc
254 Float_t angle = phi*kRaddeg-( Int_t (kRaddeg*phi/fPhiSec) + 0.5) *fPhiSec;
255 Float_t xs = radius*TMath::Cos(angle/kRaddeg);
256 Float_t ys = radius*TMath::Sin(angle/kRaddeg);
257 Float_t zs = z;
258
259 // Do the same for the selected pad
260
261 Float_t g[3];
a6a9820c 262 GetPosPar(det,g);
d3c7bfac 263
264 Float_t padRadius = TMath::Sqrt(g[0]*g[0]+g[1]*g[1]);
265 Float_t padPhi=TMath::ATan2(g[1],g[0]);
266 if(padPhi<0) padPhi=2.*TMath::Pi()+padPhi;
267 // Get the local angle in the sector philoc
268 Float_t padAngle = padPhi*kRaddeg-( Int_t (padPhi*kRaddeg/fPhiSec)+ 0.5) * fPhiSec;
269 Float_t padxs = padRadius*TMath::Cos(padAngle/kRaddeg);
270 Float_t padys = padRadius*TMath::Sin(padAngle/kRaddeg);
271 Float_t padzs = g[2];
272
273 //Now move to local pad coordinate frame. Translate:
274
275 Float_t xt = xs-padxs;
276 Float_t yt = ys-padys;
277 Float_t zt = zs-padzs;
278
279 //Now Rotate:
280
281 Float_t alpha = GetAngles(det[1],det[2]);
282 Float_t xr = xt*TMath::Cos(alpha/kRaddeg)+zt*TMath::Sin(alpha/kRaddeg);
283 Float_t yr = yt;
284 Float_t zr = -xt*TMath::Sin(alpha/kRaddeg)+zt*TMath::Cos(alpha/kRaddeg);
285
286 if(TMath::Abs(xr)<=0.75 && TMath::Abs(yr)<= (fgkXPad*0.5) && TMath::Abs(zr)<= (fgkZPad*0.5))
287 isInside=true;
288 return isInside;
289
290}
291
a6a9820c 292
293//_____________________________________________________________________________
7aeeaf38 294Float_t AliTOFGeometryV4::DistanceToPad(Int_t *det, TGeoHMatrix mat, Float_t *pos, Float_t *dist3d) const
a6a9820c 295{
296//
297// Returns distance of space point with coor pos (x,y,z) (cm) wrt
298// pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
299//
300 if (!gGeoManager) {
301 printf("ERROR: no TGeo\n");
302 return 0.;
303 }
304 Double_t vecg[3];
305 vecg[0]=pos[0];
306 vecg[1]=pos[1];
307 vecg[2]=pos[2];
308 Double_t veclr[3]={-1.,-1.,-1.};
309 Double_t vecl[3]={-1.,-1.,-1.};
310 mat.MasterToLocal(vecg,veclr);
311 vecl[0]=veclr[1];
312 vecl[1]=veclr[0];
313 vecl[2]=-veclr[2];
314 //Take into account reflections
315 if(det[1]>2){
316 vecl[1]=-veclr[0];
317 vecl[2]= veclr[2];
318 }
319
320 Float_t dist = TMath::Sqrt(vecl[0]*vecl[0]+vecl[1]*vecl[1]+vecl[2]*vecl[2]);
321
322
323 if (dist3d){
324 dist3d[0] = vecl[0];
325 dist3d[1] = vecl[1];
326 dist3d[2] = vecl[2];
327 }
328
329 return dist;
330
331}
332
333
334//_____________________________________________________________________________
7aeeaf38 335Bool_t AliTOFGeometryV4::IsInsideThePad( Int_t *det, TGeoHMatrix mat, Float_t *pos) const
a6a9820c 336{
337//
338// Returns true if space point with coor pos (x,y,z) (cm) falls
339// inside pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
340//
341
342 const Float_t khsensmy = 0.5; // heigth of Sensitive Layer
343
344 Double_t vecg[3];
345 vecg[0]=pos[0];
346 vecg[1]=pos[1];
347 vecg[2]=pos[2];
348 Double_t veclr[3]={-1.,-1.,-1.};
349 Double_t vecl[3]={-1.,-1.,-1.};
350 mat.MasterToLocal(vecg,veclr);
351 vecl[0]=veclr[1];
352 vecl[1]=veclr[0];
353 vecl[2]=-veclr[2];
354 //Take into account reflections
355 if(det[1]>2){
356 vecl[1]=-veclr[0];
357 vecl[2]= veclr[2];
358 }
359
360 Float_t xr = vecl[0];
361 Float_t yr = vecl[1];
362 Float_t zr = vecl[2];
363
364 Bool_t isInside=false;
365 if(TMath::Abs(xr)<= khsensmy*0.5 && TMath::Abs(yr)<= (fgkXPad*0.5) && TMath::Abs(zr)<= (fgkZPad*0.5))
366 isInside=true;
367 return isInside;
368
369}
d3c7bfac 370//_____________________________________________________________________________
7aeeaf38 371Float_t AliTOFGeometryV4::GetX(Int_t *det) const
d3c7bfac 372{
373 //
374 // Returns X coordinate (cm)
375 //
376
377 Int_t isector = det[0];
378 Int_t iplate = det[1];
379 Int_t istrip = det[2];
380 Int_t ipadz = det[3];
381 Int_t ipadx = det[4];
382
383 // Find out distance d on the plane wrt median phi:
384 Float_t d = (ipadx+0.5)*fgkXPad-(kNpadX*fgkXPad)*0.5;
385
386 // The radius r in xy plane:
387 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
388 (ipadz-0.5)*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
389
390 // local azimuthal angle in the sector philoc
391 Float_t philoc = TMath:: ATan(d/r);
392
393 // azimuthal angle in the global frame phi
394 Float_t phi = philoc*kRaddeg+(isector+0.5 )*fPhiSec;
395
396 Float_t xCoor = r/TMath::Cos(philoc)*TMath::Cos(phi/kRaddeg);
397
398 return xCoor;
399
400}
401//_____________________________________________________________________________
7aeeaf38 402Float_t AliTOFGeometryV4::GetY(Int_t *det) const
d3c7bfac 403{
404 //
405 // Returns Y coordinate (cm)
406 //
407
408 Int_t isector = det[0];
409 Int_t iplate = det[1];
410 Int_t istrip = det[2];
411 Int_t ipadz = det[3];
412 Int_t ipadx = det[4];
413
414 // Find out distance d on the plane wrt median phi:
415 Float_t d = (ipadx+0.5)*fgkXPad-(kNpadX*fgkXPad)*0.5;
416
417 // The radius r in xy plane:
418 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
419 (ipadz-0.5)*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
420
421 // local azimuthal angle in the sector philoc
422 Float_t philoc = TMath:: ATan(d/r);
423
424 // azimuthal angle in the global frame phi
425 Float_t phi = philoc*kRaddeg+(isector+0.5 )*fPhiSec;
426
427 Float_t yCoor = r/TMath::Cos(philoc)*TMath::Sin(phi/kRaddeg);
428
429 return yCoor;
430
431}
432
433//_____________________________________________________________________________
7aeeaf38 434Float_t AliTOFGeometryV4::GetZ(Int_t *det) const
d3c7bfac 435{
436 //
437 // Returns Z coordinate (cm)
438 //
439
440 Int_t iplate = det[1];
441 Int_t istrip = det[2];
442 Int_t ipadz = det[3];
443
444 // The radius r in xy plane:
445 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip];
446
447 Float_t zCoor = r*TMath::Tan(0.5*TMath::Pi()-GetStripTheta(iplate,istrip))-
448 (ipadz-0.5)*fgkZPad*TMath::Cos(fAngles[iplate][istrip]/kRaddeg);
449 return zCoor;
450
451}
452
453//_____________________________________________________________________________
7aeeaf38 454Int_t AliTOFGeometryV4::GetSector(Float_t *pos) const
d3c7bfac 455{
456 //
457 // Returns the Sector index
458 //
459
460 Int_t iSect = -1;
461
462 Float_t x = pos[0];
463 Float_t y = pos[1];
464
465 Float_t phi = TMath::ATan2(y,x);
466 if(phi<0.) phi=2.*TMath::Pi()+phi;
467 iSect = (Int_t) (phi*kRaddeg/fPhiSec);
468
469 return iSect;
470
471}
472
473//_____________________________________________________________________________
7aeeaf38 474Int_t AliTOFGeometryV4::GetPadX(Float_t *pos) const
d3c7bfac 475{
476 //
477 // Returns the Pad index along X
478 //
479
480 Int_t iPadX = -1;
481
482 Float_t x = pos[0];
483 Float_t y = pos[1];
484 Float_t z = pos[2];
485
486 Int_t isector = GetSector(pos);
487 if(isector == -1){
488 AliError("Detector Index could not be determined");
489 return iPadX;}
490 Int_t iplate = GetPlate(pos);
491 if(iplate == -1){
492 AliError("Detector Index could not be determined");
493 return iPadX;}
494 Int_t istrip = GetStrip(pos);
495 if(istrip == -1){
496 AliError("Detector Index could not be determined");
497 return iPadX;}
498
499
500 Float_t rho=TMath::Sqrt(x*x+y*y);
501 Float_t phi = TMath::ATan2(y,x);
502 if(phi<0.) phi=2.*TMath::Pi()+phi;
503
504 // Get the local angle in the sector philoc
505 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
506 philoc*=TMath::Pi()/180.;
507 // theta projected on the median of the sector
508 Float_t theta = TMath::ATan2(rho*TMath::Cos(philoc),z);
509 // The radius r in xy plane:
510 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
511 (theta-GetStripTheta(iplate, istrip))/
512 (GetMaxStripTheta(iplate, istrip)-GetMinStripTheta(iplate, istrip))
513 * 2.*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
514
515 // Find out distance projected onto the strip plane
516 Float_t d = (r*TMath::Tan(philoc)+(kNpadX*fgkXPad)*0.5);
517
518 iPadX = (Int_t) ( d/fgkXPad);
519 return iPadX;
520
521}
522//_____________________________________________________________________________
7aeeaf38 523Int_t AliTOFGeometryV4::GetPlate(Float_t *pos) const
d3c7bfac 524{
525 //
526 // Returns the Plate index
527 //
528 Int_t iPlate=-1;
529
530 Int_t isector = GetSector(pos);
531 if(isector == -1){
532 AliError("Detector Index could not be determined");
533 return iPlate;}
534
535 Float_t x = pos[0];
536 Float_t y = pos[1];
537 Float_t z = pos[2];
538
539 Float_t rho=TMath::Sqrt(x*x+y*y);
540 Float_t phi=TMath::ATan2(y,x);
541 if(phi<0) phi=2.*TMath::Pi()+phi;
542 // Get the local angle in the sector philoc
543 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
544 philoc*=TMath::Pi()/180.;
545 // theta projected on the median of the sector
546 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
547
548 for (Int_t i=0; i<kNPlates; i++){
549 if ( GetMaxPlateTheta(i) >= theta &&
550 GetMinPlateTheta(i) <= theta)iPlate=i;
551 }
552
553 return iPlate;
554
555}
556
557//_____________________________________________________________________________
7aeeaf38 558Int_t AliTOFGeometryV4::GetStrip(Float_t *pos) const
d3c7bfac 559{
560 //
561 // Returns the Strip index
562 //
563
564 Int_t iStrip=-1;
565
566
567 Int_t isector = GetSector(pos);
568 if(isector == -1){
569 AliError("Detector Index could not be determined");
570 return iStrip;}
571 Int_t iplate = GetPlate(pos);
572 if(iplate == -1){
573 AliError("Detector Index could not be determined");
574 return iStrip;}
575
576
577 Float_t x = pos[0];
578 Float_t y = pos[1];
579 Float_t z = pos[2];
580
581 Int_t nstrips=0;
582 if(iplate==0 || iplate == 4)nstrips=kNStripC;
583 if(iplate==1 || iplate == 3)nstrips=kNStripB;
584 if(iplate==2) nstrips=kNStripA;
585
586 Float_t rho=TMath::Sqrt(x*x+y*y);
587 Float_t phi=TMath::ATan2(y,x);
588 if(phi<0) phi=2.*TMath::Pi()+phi;
589 // Get the local angle in the sector philoc
590 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
591 philoc*=TMath::Pi()/180.;
592 // theta projected on the median of the sector
593 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
594
595 for (Int_t istrip=0; istrip<nstrips; istrip++){
596
597 if(
598 GetMaxStripTheta(iplate,istrip) >= theta
599 &&
600 GetMinStripTheta(iplate,istrip) <= theta ) iStrip = istrip;
601
602 }
603
604 return iStrip;
605
606}
607//_____________________________________________________________________________
7aeeaf38 608Int_t AliTOFGeometryV4::GetPadZ(Float_t *pos) const
d3c7bfac 609{
610 //
611 // Returns the Pad index along Z
612 //
613 Int_t iPadZ = -1;
614
615 Int_t isector = GetSector(pos);
616 if(isector == -1){
617 AliError("Detector Index could not be determined");
618 return iPadZ;}
619 Int_t iplate = GetPlate(pos);
620 if(iplate == -1){
621 AliError("Detector Index could not be determined");
622 return iPadZ;}
623 Int_t istrip = GetStrip(pos);
624 if(istrip == -1){
625 AliError("Detector Index could not be determined");
626 return iPadZ;}
627
628
629 Float_t x = pos[0];
630 Float_t y = pos[1];
631 Float_t z = pos[2];
632
633 Float_t rho=TMath::Sqrt(x*x+y*y);
634 Float_t phi=TMath::ATan2(y,x);
635 if(phi<0) phi=2.*TMath::Pi()+phi;
636 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
637 philoc*=TMath::Pi()/180.;
638 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
639
640 if (theta >= GetStripTheta(iplate, istrip))iPadZ=1;
641 else iPadZ=0;
642
643 return iPadZ;
644
645}
646//_____________________________________________________________________________
7aeeaf38 647Float_t AliTOFGeometryV4::GetMinPlateTheta(Int_t iPlate) const
d3c7bfac 648{
649 //
650 // Returns the minimum theta angle of a given plate iPlate (rad)
651 //
652
653
654 Int_t index=0;
655
656 Float_t delta =0.;
657 if(iPlate==0)delta = -1. ;
658 if(iPlate==1)delta = -0.5;
659 if(iPlate==3)delta = +0.5;
660 if(iPlate==4)delta = +1. ;
661
662 Float_t z=(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][index]/kRaddeg)+delta;
663 Float_t r=(fgkRmin+fgkRmax)/2.+fHeights[iPlate][index];
664 z =z+fgkZPad*TMath::Cos(fAngles[iPlate][index]/kRaddeg);
665 r =r-fgkZPad*TMath::Sin(fAngles[iPlate][index]/kRaddeg);
666
667 Float_t thmin = 0.5*TMath::Pi()-TMath::ATan(z/r)-fgkDprecMin;
668 return thmin;
669
670}
671//_____________________________________________________________________________
7aeeaf38 672Float_t AliTOFGeometryV4::GetMaxPlateTheta(Int_t iPlate) const
d3c7bfac 673{
674 //
675 // Returns the maximum theta angle of a given plate iPlate (rad)
676
677 Int_t index=0;
678 if(iPlate==0 ||iPlate == 4)index=kNStripC-1;
679 if(iPlate==1 ||iPlate == 3)index=kNStripB-1;
680 if(iPlate==2) index=kNStripA-1;
681
682 Float_t delta =0.;
683 if(iPlate==0)delta = -1. ;
684 if(iPlate==1)delta = -0.5;
685 if(iPlate==3)delta = +0.5;
686 if(iPlate==4)delta = +1. ;
687
688 Float_t z=(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][index]/kRaddeg)+delta;
689 Float_t r=(fgkRmin+fgkRmax)/2.+fHeights[iPlate][index];
690 z =z-fgkZPad*TMath::Cos(fAngles[iPlate][index]/kRaddeg);
691 r= r+fgkZPad*TMath::Sin(fAngles[iPlate][index]/kRaddeg);
692
693 Float_t thmax = 0.5*TMath::Pi()-TMath::ATan(z/r)+fgkDprecMax;
694
695 return thmax;
696
697}
698//_____________________________________________________________________________
7aeeaf38 699Float_t AliTOFGeometryV4::GetMaxStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 700{
701 //
702 // Returns the maximum theta angle of a given strip iStrip (rad)
703 //
704
705
706 Float_t delta =0.;
707 if(iPlate==0)delta = -1. ;
708 if(iPlate==1)delta = -0.5;
709 if(iPlate==3)delta = +0.5;
710 if(iPlate==4)delta = +1. ;
711
712 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
713 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
714 z = z-fgkZPad*TMath::Cos(fAngles[iPlate][iStrip]/kRaddeg);
715 r = r+fgkZPad*TMath::Sin(fAngles[iPlate][iStrip]/kRaddeg);
716 Float_t thmax =0.5*TMath::Pi()-TMath::ATan(z/r)+fgkDprecMax;
717 return thmax;
718
719}
720//_____________________________________________________________________________
7aeeaf38 721Float_t AliTOFGeometryV4::GetMinStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 722{
723 //
724 // Returns the minimum theta angle of a given Strip iStrip (rad)
725 //
726
727
728 Float_t delta =0.;
729 if(iPlate==0)delta = -1. ;
730 if(iPlate==1)delta = -0.5;
731 if(iPlate==3)delta = +0.5;
732 if(iPlate==4)delta = +1. ;
733
734
735 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
736 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
737 z =z+fgkZPad*TMath::Cos(fAngles[iPlate][iStrip]/kRaddeg);
738 r =r-fgkZPad*TMath::Sin(fAngles[iPlate][iStrip]/kRaddeg);
739 Float_t thmin =0.5*TMath::Pi()-TMath::ATan(z/r)-fgkDprecMin;
740
741 return thmin;
742
743}
744//_____________________________________________________________________________
7aeeaf38 745Float_t AliTOFGeometryV4::GetStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 746{
747 //
748 // returns the median theta angle of a given strip iStrip (rad)
749 //
750
751
752 Float_t delta =0.;
753 if(iPlate==0)delta = -1. ;
754 if(iPlate==1)delta = -0.5;
755 if(iPlate==3)delta = +0.5;
756 if(iPlate==4)delta = +1. ;
757
758 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
759 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
760 Float_t theta =0.5*TMath::Pi()-TMath::ATan(z/r);
761 if(iPlate != 2){
762 if(theta > 0.5*TMath::Pi() )theta+=fgkDprecCen;
763 if(theta < 0.5*TMath::Pi() )theta-=fgkDprecCen;
764 }
765 return theta;
766
767}
768//_____________________________________________________________________________
a6a9820c 769void AliTOFGeometryV4::GetVolumePath(Int_t *ind, Char_t *path ) {
770 //--------------------------------------------------------------------
771 // This function returns the colume path of a given pad
772 //--------------------------------------------------------------------
773 Int_t sector = ind[0];
774 Char_t string1[100];
775 Char_t string2[100];
776 Char_t string3[100];
777 Char_t string4[100];
778 Int_t nstrB = NStripB();
779 Int_t nstrC = NStripC();
780
781 Int_t icopy=-1;
782
783 if(sector<3){
784 icopy=sector+1;
785 sprintf(string1,"/ALIC_1/B077_1/B075_%i/BTO3_1",icopy);
786 }
787 else if(sector<11){
788 // icopy=sector-2;
789 icopy=sector+3;
790 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
791 }
792 else if(sector==11 || sector==12){
793 icopy=sector-10;
794 sprintf(string1,"/ALIC_1/B077_1/B074_%i/BTO2_1",icopy);
795 }
796 else {
797 // icopy=sector-4;
798 icopy=sector-12;
799 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
800 }
801
802 Int_t modnum=ind[1];
803 Int_t istrip=ind[2];
804
805 if( modnum ==0){
806 sprintf(string2,"FTOC_1/FLTC_0");
807 icopy= nstrC - istrip;
808 sprintf(string3,"FSTR_%i",icopy);
809 }
810 else if( modnum ==1){
811 sprintf(string2,"FTOB_1/FLTB_0");
812 icopy= nstrB - istrip;
813 sprintf(string3,"FSTR_%i",icopy);
814 }
815 else if( modnum ==2){
816 sprintf(string2,"FTOA_0/FLTA_0");
817 icopy= istrip+1;
818 sprintf(string3,"FSTR_%i",icopy);
819 }
820 else if( modnum ==3){
821 sprintf(string2,"FTOB_2/FLTB_0");
822 icopy= istrip+1;
823 sprintf(string3,"FSTR_%i",icopy);
824 }
825 else if( modnum ==4){
826 sprintf(string2,"FTOC_2/FLTC_0");
827 icopy= istrip+1;
828 sprintf(string3,"FSTR_%i",icopy);
829 }
830
831
832 Int_t padz = ind[3]+1;
833 Int_t padx = ind[4]+1;
834 if(modnum==3 || modnum==4){
835 padz = NpadZ() -ind[3];
836 padx = NpadX() -ind[4];
837 }
838 sprintf(string4,"FSEN_0/FSEZ_%i/FSEX_%i",padz,padx);
839 sprintf(path,"%s/%s/%s/%s",string1,string2,string3,string4);
840
841}
842
843//_____________________________________________________________________________
844void AliTOFGeometryV4::GetPos(Int_t *det, Float_t *pos)
845{
846//
847// Returns space point coor (x,y,z) (cm) for Detector
848// Indices (iSect,iPlate,iStrip,iPadX,iPadZ)
849//
850 Char_t path[100];
851 GetVolumePath(det,path );
852 if (!gGeoManager) {
853 printf("ERROR: no TGeo\n");
854 }
855 gGeoManager->cd(path);
856 TGeoHMatrix global;
857 global = *gGeoManager->GetCurrentMatrix();
858 const Double_t *tr = global.GetTranslation();
859
860 pos[0]=tr[0];
861 pos[1]=tr[1];
862 pos[2]=tr[2];
863}
864//_____________________________________________________________________________