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