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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$Log$
15ec34b9 18Revision 1.5 2006/04/20 22:30:50 hristov
19Coding conventions (Annalisa)
20
0e46b9ae 21Revision 1.4 2006/04/16 22:29:05 hristov
22Coding conventions (Annalisa)
23
7aeeaf38 24Revision 1.3 2006/03/12 14:38:13 arcelli
25 Changes for TOF Reconstruction using TGeo
26
a6a9820c 27Revision 1.2 2006/02/28 10:38:00 decaro
28AliTOFGeometry::fAngles, AliTOFGeometry::fHeights, AliTOFGeometry::fDistances arrays: dimension definition in the right location
29
4402e7cb 30Revision 1.1 2005/12/15 08:55:33 decaro
31New TOF geometry description (V5) -G. Cara Romeo and A. De Caro
32
d3c7bfac 33Revision 0.1 2005/07/19 A. De Caro
34 Modify Global methods IsInsideThePad & DistanceToPad
35 according to the PPR TOF geometry
36 Implement Global methods GetPadDx & GetPadDy & GetPadDz
37 Modify Global methods GetDetID & GetPlate & GetSector &
38 GetStrip & GetPadX & GetPadZ
39 according to the PPR TOF geometry
40 Modify Global methods GetPos & GetX & GetY & GetZ
41 according to the PPR TOF geometry
42*/
43
d3c7bfac 44///////////////////////////////////////////////////////////////////////////////
45// //
46// TOF Geometry class (PPR version) //
47// //
48///////////////////////////////////////////////////////////////////////////////
49
0e46b9ae 50#include "TGeoManager.h"
51
d3c7bfac 52#include "AliConst.h"
0e46b9ae 53#include "AliLog.h"
d3c7bfac 54
d3c7bfac 55#include "AliTOFGeometryV4.h"
56
0e46b9ae 57extern TGeoManager *gGeoManager;
58
d3c7bfac 59ClassImp(AliTOFGeometryV4)
60
d3c7bfac 61
62const Float_t AliTOFGeometryV4::fgkZlenA = 106.0; // length (cm) of the A module
63const Float_t AliTOFGeometryV4::fgkZlenB = 141.0; // length (cm) of the B module
64const Float_t AliTOFGeometryV4::fgkZlenC = 177.5; // length (cm) of the C module
65const Float_t AliTOFGeometryV4::fgkMaxhZtof = 371.5; // Max half z-size of TOF (cm)
d3c7bfac 66
67const Float_t AliTOFGeometryV4::fgkDeadBndX = 1.0; // Dead Boundaries of a Strip along X direction (length) (cm)
68const Float_t AliTOFGeometryV4::fgkDeadBndZ = 1.5; // Dead Boundaries of a Strip along Z direction (width) (cm)
69const Float_t AliTOFGeometryV4::fgkOverSpc = 15.3; // Space available for sensitive layers in radial direction (cm)
70
71const Float_t AliTOFGeometryV4::fgkDprecMin = 0.0000075;//num.prec.tolerance on Thmin
72const Float_t AliTOFGeometryV4::fgkDprecMax = 0.0000100;//num.prec.tolerance on Thma
73const Float_t AliTOFGeometryV4::fgkDprecCen = 0.0000005;//num.prec.tolerance on <Theta>
74
75const Float_t AliTOFGeometryV4::fgkxTOF = 371.; // Inner radius of the TOF for Reconstruction (cm)
76const Float_t AliTOFGeometryV4::fgkRmin = 370.; // Inner radius of the TOF (cm)
77const Float_t AliTOFGeometryV4::fgkRmax = 399.; // Outer radius of the TOF (cm)
78
79//_____________________________________________________________________________
80AliTOFGeometryV4::AliTOFGeometryV4()
81 :AliTOFGeometry()
82{
83 //
84 // AliTOFGeometryV4 default constructor
85 //
86
7aeeaf38 87 AliTOFGeometry::fNStripC = kNStripC; // number of strips in C type module
d3c7bfac 88
7aeeaf38 89 AliTOFGeometry::fZlenA = fgkZlenA; // length (cm) of the A module
90 AliTOFGeometry::fZlenB = fgkZlenB; // length (cm) of the B module
91 AliTOFGeometry::fZlenC = fgkZlenC; // length (cm) of the C module
92 AliTOFGeometry::fMaxhZtof = fgkMaxhZtof; // Max half z-size of TOF (cm)
d3c7bfac 93
7aeeaf38 94 AliTOFGeometry::fxTOF = fgkxTOF; // Inner radius of the TOF for Reconstruction (cm)
95 AliTOFGeometry::fRmin = fgkRmin; // Inner radius of the TOF (cm)
96 AliTOFGeometry::fRmax = fgkRmax; // Outer radius of the TOF (cm)
d3c7bfac 97
98 Init();
99
100}
101
102//_____________________________________________________________________________
103AliTOFGeometryV4::~AliTOFGeometryV4()
104{
105 //
106 // AliTOFGeometryV4 destructor
107 //
108
109}
110//_____________________________________________________________________________
a6a9820c 111void AliTOFGeometryV4::ImportGeometry(){
112 TGeoManager::Import("geometry.root");
113}
114//_____________________________________________________________________________
d3c7bfac 115void AliTOFGeometryV4::Init()
116{
117 //
118 // Initialize strip Tilt Angles and Heights
119 //
120 // Strips Tilt Angles
121
7aeeaf38 122 fPhiSec = 360./kNSectors;
123
d3c7bfac 124 Float_t const kangles[kNPlates][kMaxNstrip] ={
125
126 {44.494, 43.725, 42.946, 42.156, 41.357, 40.548, 39.729, 38.899,
127 38.060, 37.211, 36.353, 35.484, 34.606, 33.719, 32.822, 31.916,
128 31.001, 30.077, 29.144, 28.202 },
129
130 {26.884, 25.922, 24.952, 23.975, 22.989, 22.320, 21.016, 20.309,
131 19.015, 18.270, 16.989, 16.205, 14.941, 14.117, 12.871, 12.008,
132 10.784, 9.8807, 8.681, 0.0 },
133
134 { 7.5835, 6.4124, 5.4058, 4.2809, 3.2448, 2.1424, 1.078, -0., -1.078,
135 -2.1424, -3.2448, -4.2809, -5.4058, -6.4124, -7.5835, 0.0, 0.0, 0.0,
136 0.0, 0.0 },
137
138 {-8.681, -9.8807, -10.784, -12.008, -12.871, -14.117, -14.941, -16.205,
139 -16.989, -18.27, -19.015, -20.309, -21.016, -22.32, -22.989,
140 -23.975, -24.952, -25.922, -26.884, 0. },
141
142 {-28.202, -29.144, -30.077, -31.001, -31.916, -32.822, -33.719, -34.606,
143 -35.484, -36.353, -37.211, -38.06, -38.899, -39.729, -40.548,
144 -41.357, -42.156, -42.946, -43.725, -44.494 }};
145
146
147 //Strips Heights
148
149 Float_t const kheights[kNPlates][kMaxNstrip]= {
150
151 {-5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5,
152 -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5 },
153
154 {-6.3, -7.1, -7.9, -8.7, -9.5, -3, -9.5, -3, -9.5, -3,
155 -9.5, -3.0, -9.5, -3.0, -9.5, -3, -9.5, -3, -9 , 0.},
156
157 { -3, -9, -4.5, -9, -4.5, -9, -4.5, -9, -4.5, -9,
158 -4.5, -9, -4.5, -9, -3, 0.0, 0.0, 0.0, 0.0, 0.0 },
159
160 { -9, -3, -9.5, -3, -9.5, -3, -9.5, -3, -9.5, -3, -9.5,
161 -3, -9.5, -3, -9.5, -8.7, -7.9, -7.1, -6.3, 0. },
162
163 {-5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5,
164 -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5, -5.5 }};
165
166 // Deposit in fAngles, fHeights
167
d3c7bfac 168 for (Int_t iplate = 0; iplate < kNPlates; iplate++) {
169 for (Int_t istrip = 0; istrip < kMaxNstrip; istrip++) {
170 AliTOFGeometry::fAngles[iplate][istrip] = kangles[iplate][istrip];
171 AliTOFGeometry::fHeights[iplate][istrip] = kheights[iplate][istrip];
172 }
173 }
174
175}
176
177//_____________________________________________________________________________
7aeeaf38 178Float_t AliTOFGeometryV4::DistanceToPadPar(Int_t *det, Float_t *pos, Float_t *dist3d) const
d3c7bfac 179{
180//
181// Returns distance of space point with coor pos (x,y,z) (cm) wrt
182// pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
183//
184
185 //Transform pos into Sector Frame
186
187 Float_t x = pos[0];
188 Float_t y = pos[1];
189 Float_t z = pos[2];
190
191 Float_t radius = TMath::Sqrt(x*x+y*y);
192 Float_t phi=TMath::ATan2(y,x);
193 if(phi<0) phi=2.*TMath::Pi()+phi;
194 // Get the local angle in the sector philoc
195 Float_t angle = phi*kRaddeg-( Int_t (kRaddeg*phi/fPhiSec) + 0.5)*fPhiSec;
196 Float_t xs = radius*TMath::Cos(angle/kRaddeg);
197 Float_t ys = radius*TMath::Sin(angle/kRaddeg);
198 Float_t zs = z;
199
200 // Do the same for the selected pad
201
202 Float_t g[3];
a6a9820c 203 GetPosPar(det,g);
d3c7bfac 204
205 Float_t padRadius = TMath::Sqrt(g[0]*g[0]+g[1]*g[1]);
206 Float_t padPhi=TMath::ATan2(g[1],g[0]);
207 if(padPhi<0) padPhi=2.*TMath::Pi()+padPhi;
208 // Get the local angle in the sector philoc
209 Float_t padAngle = padPhi*kRaddeg-( Int_t (padPhi*kRaddeg/fPhiSec)+ 0.5) * fPhiSec;
210 Float_t padxs = padRadius*TMath::Cos(padAngle/kRaddeg);
211 Float_t padys = padRadius*TMath::Sin(padAngle/kRaddeg);
212 Float_t padzs = g[2];
213
214 //Now move to local pad coordinate frame. Translate:
215
216 Float_t xt = xs-padxs;
217 Float_t yt = ys-padys;
218 Float_t zt = zs-padzs;
219 //Now Rotate:
220
221 Float_t alpha = GetAngles(det[1],det[2]);
222 Float_t xr = xt*TMath::Cos(alpha/kRaddeg)+zt*TMath::Sin(alpha/kRaddeg);
223 Float_t yr = yt;
224 Float_t zr = -xt*TMath::Sin(alpha/kRaddeg)+zt*TMath::Cos(alpha/kRaddeg);
225
226 Float_t dist = TMath::Sqrt(xr*xr+yr*yr+zr*zr);
d3c7bfac 227 if (dist3d){
228 dist3d[0] = xr;
229 dist3d[1] = yr;
230 dist3d[2] = zr;
231 }
232
233 return dist;
234
235}
236
237//_____________________________________________________________________________
7aeeaf38 238Bool_t AliTOFGeometryV4::IsInsideThePadPar(Int_t *det, Float_t *pos) const
d3c7bfac 239{
240//
241// Returns true if space point with coor pos (x,y,z) (cm) falls
242// inside pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
243//
244
245 Bool_t isInside=false;
246
247 //Transform pos into Sector Frame
248
249 Float_t x = pos[0];
250 Float_t y = pos[1];
251 Float_t z = pos[2];
252
253 Float_t radius = TMath::Sqrt(x*x+y*y);
254 Float_t phi=TMath::ATan2(y,x);
255 if(phi<0) phi=2.*TMath::Pi()+phi;
256 // Get the local angle in the sector philoc
257 Float_t angle = phi*kRaddeg-( Int_t (kRaddeg*phi/fPhiSec) + 0.5) *fPhiSec;
258 Float_t xs = radius*TMath::Cos(angle/kRaddeg);
259 Float_t ys = radius*TMath::Sin(angle/kRaddeg);
260 Float_t zs = z;
261
262 // Do the same for the selected pad
263
264 Float_t g[3];
a6a9820c 265 GetPosPar(det,g);
d3c7bfac 266
267 Float_t padRadius = TMath::Sqrt(g[0]*g[0]+g[1]*g[1]);
268 Float_t padPhi=TMath::ATan2(g[1],g[0]);
269 if(padPhi<0) padPhi=2.*TMath::Pi()+padPhi;
270 // Get the local angle in the sector philoc
271 Float_t padAngle = padPhi*kRaddeg-( Int_t (padPhi*kRaddeg/fPhiSec)+ 0.5) * fPhiSec;
272 Float_t padxs = padRadius*TMath::Cos(padAngle/kRaddeg);
273 Float_t padys = padRadius*TMath::Sin(padAngle/kRaddeg);
274 Float_t padzs = g[2];
275
276 //Now move to local pad coordinate frame. Translate:
277
278 Float_t xt = xs-padxs;
279 Float_t yt = ys-padys;
280 Float_t zt = zs-padzs;
281
282 //Now Rotate:
283
284 Float_t alpha = GetAngles(det[1],det[2]);
285 Float_t xr = xt*TMath::Cos(alpha/kRaddeg)+zt*TMath::Sin(alpha/kRaddeg);
286 Float_t yr = yt;
287 Float_t zr = -xt*TMath::Sin(alpha/kRaddeg)+zt*TMath::Cos(alpha/kRaddeg);
288
289 if(TMath::Abs(xr)<=0.75 && TMath::Abs(yr)<= (fgkXPad*0.5) && TMath::Abs(zr)<= (fgkZPad*0.5))
290 isInside=true;
291 return isInside;
292
293}
294
a6a9820c 295
296//_____________________________________________________________________________
7aeeaf38 297Float_t AliTOFGeometryV4::DistanceToPad(Int_t *det, TGeoHMatrix mat, Float_t *pos, Float_t *dist3d) const
a6a9820c 298{
299//
300// Returns distance of space point with coor pos (x,y,z) (cm) wrt
301// pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
302//
303 if (!gGeoManager) {
304 printf("ERROR: no TGeo\n");
305 return 0.;
306 }
307 Double_t vecg[3];
308 vecg[0]=pos[0];
309 vecg[1]=pos[1];
310 vecg[2]=pos[2];
311 Double_t veclr[3]={-1.,-1.,-1.};
312 Double_t vecl[3]={-1.,-1.,-1.};
313 mat.MasterToLocal(vecg,veclr);
314 vecl[0]=veclr[1];
315 vecl[1]=veclr[0];
316 vecl[2]=-veclr[2];
317 //Take into account reflections
318 if(det[1]>2){
319 vecl[1]=-veclr[0];
320 vecl[2]= veclr[2];
321 }
322
323 Float_t dist = TMath::Sqrt(vecl[0]*vecl[0]+vecl[1]*vecl[1]+vecl[2]*vecl[2]);
324
325
326 if (dist3d){
327 dist3d[0] = vecl[0];
328 dist3d[1] = vecl[1];
329 dist3d[2] = vecl[2];
330 }
331
332 return dist;
333
334}
335
336
337//_____________________________________________________________________________
7aeeaf38 338Bool_t AliTOFGeometryV4::IsInsideThePad( Int_t *det, TGeoHMatrix mat, Float_t *pos) const
a6a9820c 339{
340//
341// Returns true if space point with coor pos (x,y,z) (cm) falls
342// inside pad with Detector Indices idet (iSect,iPlate,iStrip,iPadX,iPadZ)
343//
344
345 const Float_t khsensmy = 0.5; // heigth of Sensitive Layer
346
347 Double_t vecg[3];
348 vecg[0]=pos[0];
349 vecg[1]=pos[1];
350 vecg[2]=pos[2];
351 Double_t veclr[3]={-1.,-1.,-1.};
352 Double_t vecl[3]={-1.,-1.,-1.};
353 mat.MasterToLocal(vecg,veclr);
354 vecl[0]=veclr[1];
355 vecl[1]=veclr[0];
356 vecl[2]=-veclr[2];
357 //Take into account reflections
358 if(det[1]>2){
359 vecl[1]=-veclr[0];
360 vecl[2]= veclr[2];
361 }
362
363 Float_t xr = vecl[0];
364 Float_t yr = vecl[1];
365 Float_t zr = vecl[2];
366
367 Bool_t isInside=false;
368 if(TMath::Abs(xr)<= khsensmy*0.5 && TMath::Abs(yr)<= (fgkXPad*0.5) && TMath::Abs(zr)<= (fgkZPad*0.5))
369 isInside=true;
370 return isInside;
371
372}
d3c7bfac 373//_____________________________________________________________________________
7aeeaf38 374Float_t AliTOFGeometryV4::GetX(Int_t *det) const
d3c7bfac 375{
376 //
377 // Returns X coordinate (cm)
378 //
379
380 Int_t isector = det[0];
381 Int_t iplate = det[1];
382 Int_t istrip = det[2];
383 Int_t ipadz = det[3];
384 Int_t ipadx = det[4];
385
386 // Find out distance d on the plane wrt median phi:
387 Float_t d = (ipadx+0.5)*fgkXPad-(kNpadX*fgkXPad)*0.5;
388
389 // The radius r in xy plane:
390 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
391 (ipadz-0.5)*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
392
393 // local azimuthal angle in the sector philoc
394 Float_t philoc = TMath:: ATan(d/r);
395
396 // azimuthal angle in the global frame phi
397 Float_t phi = philoc*kRaddeg+(isector+0.5 )*fPhiSec;
398
399 Float_t xCoor = r/TMath::Cos(philoc)*TMath::Cos(phi/kRaddeg);
400
401 return xCoor;
402
403}
404//_____________________________________________________________________________
7aeeaf38 405Float_t AliTOFGeometryV4::GetY(Int_t *det) const
d3c7bfac 406{
407 //
408 // Returns Y coordinate (cm)
409 //
410
411 Int_t isector = det[0];
412 Int_t iplate = det[1];
413 Int_t istrip = det[2];
414 Int_t ipadz = det[3];
415 Int_t ipadx = det[4];
416
417 // Find out distance d on the plane wrt median phi:
418 Float_t d = (ipadx+0.5)*fgkXPad-(kNpadX*fgkXPad)*0.5;
419
420 // The radius r in xy plane:
421 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
422 (ipadz-0.5)*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
423
424 // local azimuthal angle in the sector philoc
425 Float_t philoc = TMath:: ATan(d/r);
426
427 // azimuthal angle in the global frame phi
428 Float_t phi = philoc*kRaddeg+(isector+0.5 )*fPhiSec;
429
430 Float_t yCoor = r/TMath::Cos(philoc)*TMath::Sin(phi/kRaddeg);
431
432 return yCoor;
433
434}
435
436//_____________________________________________________________________________
7aeeaf38 437Float_t AliTOFGeometryV4::GetZ(Int_t *det) const
d3c7bfac 438{
439 //
440 // Returns Z coordinate (cm)
441 //
442
443 Int_t iplate = det[1];
444 Int_t istrip = det[2];
445 Int_t ipadz = det[3];
446
447 // The radius r in xy plane:
448 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip];
449
450 Float_t zCoor = r*TMath::Tan(0.5*TMath::Pi()-GetStripTheta(iplate,istrip))-
451 (ipadz-0.5)*fgkZPad*TMath::Cos(fAngles[iplate][istrip]/kRaddeg);
452 return zCoor;
453
454}
455
456//_____________________________________________________________________________
7aeeaf38 457Int_t AliTOFGeometryV4::GetSector(Float_t *pos) const
d3c7bfac 458{
459 //
460 // Returns the Sector index
461 //
462
463 Int_t iSect = -1;
464
465 Float_t x = pos[0];
466 Float_t y = pos[1];
467
468 Float_t phi = TMath::ATan2(y,x);
469 if(phi<0.) phi=2.*TMath::Pi()+phi;
470 iSect = (Int_t) (phi*kRaddeg/fPhiSec);
471
472 return iSect;
473
474}
475
476//_____________________________________________________________________________
7aeeaf38 477Int_t AliTOFGeometryV4::GetPadX(Float_t *pos) const
d3c7bfac 478{
479 //
480 // Returns the Pad index along X
481 //
482
483 Int_t iPadX = -1;
484
485 Float_t x = pos[0];
486 Float_t y = pos[1];
487 Float_t z = pos[2];
488
489 Int_t isector = GetSector(pos);
490 if(isector == -1){
491 AliError("Detector Index could not be determined");
492 return iPadX;}
493 Int_t iplate = GetPlate(pos);
494 if(iplate == -1){
495 AliError("Detector Index could not be determined");
496 return iPadX;}
497 Int_t istrip = GetStrip(pos);
498 if(istrip == -1){
499 AliError("Detector Index could not be determined");
500 return iPadX;}
501
502
503 Float_t rho=TMath::Sqrt(x*x+y*y);
504 Float_t phi = TMath::ATan2(y,x);
505 if(phi<0.) phi=2.*TMath::Pi()+phi;
506
507 // Get the local angle in the sector philoc
508 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
509 philoc*=TMath::Pi()/180.;
510 // theta projected on the median of the sector
511 Float_t theta = TMath::ATan2(rho*TMath::Cos(philoc),z);
512 // The radius r in xy plane:
513 Float_t r = (fgkRmin+fgkRmax)/2.+fHeights[iplate][istrip]+
514 (theta-GetStripTheta(iplate, istrip))/
515 (GetMaxStripTheta(iplate, istrip)-GetMinStripTheta(iplate, istrip))
516 * 2.*fgkZPad*TMath::Sin(fAngles[iplate][istrip]/kRaddeg)-0.25;
517
518 // Find out distance projected onto the strip plane
519 Float_t d = (r*TMath::Tan(philoc)+(kNpadX*fgkXPad)*0.5);
520
521 iPadX = (Int_t) ( d/fgkXPad);
522 return iPadX;
523
524}
525//_____________________________________________________________________________
7aeeaf38 526Int_t AliTOFGeometryV4::GetPlate(Float_t *pos) const
d3c7bfac 527{
528 //
529 // Returns the Plate index
530 //
531 Int_t iPlate=-1;
532
533 Int_t isector = GetSector(pos);
534 if(isector == -1){
535 AliError("Detector Index could not be determined");
536 return iPlate;}
537
538 Float_t x = pos[0];
539 Float_t y = pos[1];
540 Float_t z = pos[2];
541
542 Float_t rho=TMath::Sqrt(x*x+y*y);
543 Float_t phi=TMath::ATan2(y,x);
544 if(phi<0) phi=2.*TMath::Pi()+phi;
545 // Get the local angle in the sector philoc
546 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
547 philoc*=TMath::Pi()/180.;
548 // theta projected on the median of the sector
549 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
550
551 for (Int_t i=0; i<kNPlates; i++){
552 if ( GetMaxPlateTheta(i) >= theta &&
553 GetMinPlateTheta(i) <= theta)iPlate=i;
554 }
555
556 return iPlate;
557
558}
559
560//_____________________________________________________________________________
7aeeaf38 561Int_t AliTOFGeometryV4::GetStrip(Float_t *pos) const
d3c7bfac 562{
563 //
564 // Returns the Strip index
565 //
566
567 Int_t iStrip=-1;
568
569
570 Int_t isector = GetSector(pos);
571 if(isector == -1){
572 AliError("Detector Index could not be determined");
573 return iStrip;}
574 Int_t iplate = GetPlate(pos);
575 if(iplate == -1){
576 AliError("Detector Index could not be determined");
577 return iStrip;}
578
579
580 Float_t x = pos[0];
581 Float_t y = pos[1];
582 Float_t z = pos[2];
583
584 Int_t nstrips=0;
585 if(iplate==0 || iplate == 4)nstrips=kNStripC;
586 if(iplate==1 || iplate == 3)nstrips=kNStripB;
587 if(iplate==2) nstrips=kNStripA;
588
589 Float_t rho=TMath::Sqrt(x*x+y*y);
590 Float_t phi=TMath::ATan2(y,x);
591 if(phi<0) phi=2.*TMath::Pi()+phi;
592 // Get the local angle in the sector philoc
593 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
594 philoc*=TMath::Pi()/180.;
595 // theta projected on the median of the sector
596 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
597
598 for (Int_t istrip=0; istrip<nstrips; istrip++){
599
600 if(
601 GetMaxStripTheta(iplate,istrip) >= theta
602 &&
603 GetMinStripTheta(iplate,istrip) <= theta ) iStrip = istrip;
604
605 }
606
607 return iStrip;
608
609}
610//_____________________________________________________________________________
7aeeaf38 611Int_t AliTOFGeometryV4::GetPadZ(Float_t *pos) const
d3c7bfac 612{
613 //
614 // Returns the Pad index along Z
615 //
616 Int_t iPadZ = -1;
617
618 Int_t isector = GetSector(pos);
619 if(isector == -1){
620 AliError("Detector Index could not be determined");
621 return iPadZ;}
622 Int_t iplate = GetPlate(pos);
623 if(iplate == -1){
624 AliError("Detector Index could not be determined");
625 return iPadZ;}
626 Int_t istrip = GetStrip(pos);
627 if(istrip == -1){
628 AliError("Detector Index could not be determined");
629 return iPadZ;}
630
631
632 Float_t x = pos[0];
633 Float_t y = pos[1];
634 Float_t z = pos[2];
635
636 Float_t rho=TMath::Sqrt(x*x+y*y);
637 Float_t phi=TMath::ATan2(y,x);
638 if(phi<0) phi=2.*TMath::Pi()+phi;
639 Float_t philoc = phi*kRaddeg-(isector+0.5)*fPhiSec;
640 philoc*=TMath::Pi()/180.;
641 Float_t theta=TMath::ATan2(rho*TMath::Cos(philoc),z);
642
643 if (theta >= GetStripTheta(iplate, istrip))iPadZ=1;
644 else iPadZ=0;
645
646 return iPadZ;
647
648}
649//_____________________________________________________________________________
7aeeaf38 650Float_t AliTOFGeometryV4::GetMinPlateTheta(Int_t iPlate) const
d3c7bfac 651{
652 //
653 // Returns the minimum theta angle of a given plate iPlate (rad)
654 //
655
656
657 Int_t index=0;
658
659 Float_t delta =0.;
660 if(iPlate==0)delta = -1. ;
661 if(iPlate==1)delta = -0.5;
662 if(iPlate==3)delta = +0.5;
663 if(iPlate==4)delta = +1. ;
664
665 Float_t z=(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][index]/kRaddeg)+delta;
666 Float_t r=(fgkRmin+fgkRmax)/2.+fHeights[iPlate][index];
667 z =z+fgkZPad*TMath::Cos(fAngles[iPlate][index]/kRaddeg);
668 r =r-fgkZPad*TMath::Sin(fAngles[iPlate][index]/kRaddeg);
669
670 Float_t thmin = 0.5*TMath::Pi()-TMath::ATan(z/r)-fgkDprecMin;
671 return thmin;
672
673}
674//_____________________________________________________________________________
7aeeaf38 675Float_t AliTOFGeometryV4::GetMaxPlateTheta(Int_t iPlate) const
d3c7bfac 676{
677 //
678 // Returns the maximum theta angle of a given plate iPlate (rad)
679
680 Int_t index=0;
681 if(iPlate==0 ||iPlate == 4)index=kNStripC-1;
682 if(iPlate==1 ||iPlate == 3)index=kNStripB-1;
683 if(iPlate==2) index=kNStripA-1;
684
685 Float_t delta =0.;
686 if(iPlate==0)delta = -1. ;
687 if(iPlate==1)delta = -0.5;
688 if(iPlate==3)delta = +0.5;
689 if(iPlate==4)delta = +1. ;
690
691 Float_t z=(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][index]/kRaddeg)+delta;
692 Float_t r=(fgkRmin+fgkRmax)/2.+fHeights[iPlate][index];
693 z =z-fgkZPad*TMath::Cos(fAngles[iPlate][index]/kRaddeg);
694 r= r+fgkZPad*TMath::Sin(fAngles[iPlate][index]/kRaddeg);
695
696 Float_t thmax = 0.5*TMath::Pi()-TMath::ATan(z/r)+fgkDprecMax;
697
698 return thmax;
699
700}
701//_____________________________________________________________________________
7aeeaf38 702Float_t AliTOFGeometryV4::GetMaxStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 703{
704 //
705 // Returns the maximum theta angle of a given strip iStrip (rad)
706 //
707
708
709 Float_t delta =0.;
710 if(iPlate==0)delta = -1. ;
711 if(iPlate==1)delta = -0.5;
712 if(iPlate==3)delta = +0.5;
713 if(iPlate==4)delta = +1. ;
714
715 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
716 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
717 z = z-fgkZPad*TMath::Cos(fAngles[iPlate][iStrip]/kRaddeg);
718 r = r+fgkZPad*TMath::Sin(fAngles[iPlate][iStrip]/kRaddeg);
719 Float_t thmax =0.5*TMath::Pi()-TMath::ATan(z/r)+fgkDprecMax;
720 return thmax;
721
722}
723//_____________________________________________________________________________
7aeeaf38 724Float_t AliTOFGeometryV4::GetMinStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 725{
726 //
727 // Returns the minimum theta angle of a given Strip iStrip (rad)
728 //
729
730
731 Float_t delta =0.;
732 if(iPlate==0)delta = -1. ;
733 if(iPlate==1)delta = -0.5;
734 if(iPlate==3)delta = +0.5;
735 if(iPlate==4)delta = +1. ;
736
737
738 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
739 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
740 z =z+fgkZPad*TMath::Cos(fAngles[iPlate][iStrip]/kRaddeg);
741 r =r-fgkZPad*TMath::Sin(fAngles[iPlate][iStrip]/kRaddeg);
742 Float_t thmin =0.5*TMath::Pi()-TMath::ATan(z/r)-fgkDprecMin;
743
744 return thmin;
745
746}
747//_____________________________________________________________________________
7aeeaf38 748Float_t AliTOFGeometryV4::GetStripTheta(Int_t iPlate, Int_t iStrip) const
d3c7bfac 749{
750 //
751 // returns the median theta angle of a given strip iStrip (rad)
752 //
753
754
755 Float_t delta =0.;
756 if(iPlate==0)delta = -1. ;
757 if(iPlate==1)delta = -0.5;
758 if(iPlate==3)delta = +0.5;
759 if(iPlate==4)delta = +1. ;
760
761 Float_t r =(fgkRmin+fgkRmax)/2.+fHeights[iPlate][iStrip];
762 Float_t z =(fgkRmin+2.)*TMath::Tan(fAngles[iPlate][iStrip]/kRaddeg)+delta;
763 Float_t theta =0.5*TMath::Pi()-TMath::ATan(z/r);
764 if(iPlate != 2){
765 if(theta > 0.5*TMath::Pi() )theta+=fgkDprecCen;
766 if(theta < 0.5*TMath::Pi() )theta-=fgkDprecCen;
767 }
768 return theta;
769
770}
771//_____________________________________________________________________________
a6a9820c 772void AliTOFGeometryV4::GetVolumePath(Int_t *ind, Char_t *path ) {
773 //--------------------------------------------------------------------
774 // This function returns the colume path of a given pad
775 //--------------------------------------------------------------------
776 Int_t sector = ind[0];
777 Char_t string1[100];
778 Char_t string2[100];
779 Char_t string3[100];
780 Char_t string4[100];
781 Int_t nstrB = NStripB();
782 Int_t nstrC = NStripC();
783
784 Int_t icopy=-1;
785
786 if(sector<3){
787 icopy=sector+1;
788 sprintf(string1,"/ALIC_1/B077_1/B075_%i/BTO3_1",icopy);
789 }
790 else if(sector<11){
791 // icopy=sector-2;
792 icopy=sector+3;
793 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
794 }
795 else if(sector==11 || sector==12){
796 icopy=sector-10;
797 sprintf(string1,"/ALIC_1/B077_1/B074_%i/BTO2_1",icopy);
798 }
799 else {
800 // icopy=sector-4;
801 icopy=sector-12;
802 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
803 }
804
805 Int_t modnum=ind[1];
806 Int_t istrip=ind[2];
807
808 if( modnum ==0){
809 sprintf(string2,"FTOC_1/FLTC_0");
810 icopy= nstrC - istrip;
811 sprintf(string3,"FSTR_%i",icopy);
812 }
813 else if( modnum ==1){
814 sprintf(string2,"FTOB_1/FLTB_0");
815 icopy= nstrB - istrip;
816 sprintf(string3,"FSTR_%i",icopy);
817 }
818 else if( modnum ==2){
819 sprintf(string2,"FTOA_0/FLTA_0");
820 icopy= istrip+1;
821 sprintf(string3,"FSTR_%i",icopy);
822 }
823 else if( modnum ==3){
824 sprintf(string2,"FTOB_2/FLTB_0");
825 icopy= istrip+1;
826 sprintf(string3,"FSTR_%i",icopy);
827 }
828 else if( modnum ==4){
829 sprintf(string2,"FTOC_2/FLTC_0");
830 icopy= istrip+1;
831 sprintf(string3,"FSTR_%i",icopy);
832 }
833
834
835 Int_t padz = ind[3]+1;
836 Int_t padx = ind[4]+1;
837 if(modnum==3 || modnum==4){
838 padz = NpadZ() -ind[3];
839 padx = NpadX() -ind[4];
840 }
841 sprintf(string4,"FSEN_0/FSEZ_%i/FSEX_%i",padz,padx);
842 sprintf(path,"%s/%s/%s/%s",string1,string2,string3,string4);
843
844}
845
15ec34b9 846//_____________________________________________________________________________
847void AliTOFGeometryV4::GetVolumePath(Int_t sector, Char_t *path ) {
848 //--------------------------------------------------------------------
849 // This function returns the colume path of a given sector
850 //--------------------------------------------------------------------
851 Char_t string[100];
852
853 Int_t icopy=-1;
854
855 if(sector<3){
856 icopy=sector+1;
857 sprintf(string,"/ALIC_1/B077_1/B075_%i/BTO3_1",icopy);
858 }
859 else if(sector<11){
860 // icopy=sector-2;
861 icopy=sector+3;
862 sprintf(string,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
863 }
864 else if(sector==11 || sector==12){
865 icopy=sector-10;
866 sprintf(string,"/ALIC_1/B077_1/B074_%i/BTO2_1",icopy);
867 }
868 else {
869 // icopy=sector-4;
870 icopy=sector-12;
871 sprintf(string,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
872 }
873
874 sprintf(path,"%s",string);
875
876}
877//_____________________________________________________________________________
878void AliTOFGeometryV4::GetVolumePath(Int_t sector, Int_t plate, Int_t strip, Char_t *path ) {
879 //--------------------------------------------------------------------
880 // This function returns the colume path of a given strip
881 //--------------------------------------------------------------------
882 Char_t string1[100];
883 Char_t string2[100];
884 Char_t string3[100];
885 Int_t nstrB = NStripB();
886 Int_t nstrC = NStripC();
887
888 Int_t icopy=-1;
889
890 if(sector<3){
891 icopy=sector+1;
892 sprintf(string1,"/ALIC_1/B077_1/B075_%i/BTO3_1",icopy);
893 }
894 else if(sector<11){
895 // icopy=sector-2;
896 icopy=sector+3;
897 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
898 }
899 else if(sector==11 || sector==12){
900 icopy=sector-10;
901 sprintf(string1,"/ALIC_1/B077_1/B074_%i/BTO2_1",icopy);
902 }
903 else {
904 // icopy=sector-4;
905 icopy=sector-12;
906 sprintf(string1,"/ALIC_1/B077_1/B071_%i/BTO1_1",icopy);
907 }
908
909 if( plate ==0){
910 sprintf(string2,"FTOC_1/FLTC_0");
911 icopy = nstrC - strip;
912 sprintf(string3,"FSTR_%i",icopy);
913 }
914 else if( plate ==1){
915 sprintf(string2,"FTOB_1/FLTB_0");
916 icopy = nstrB - strip;
917 sprintf(string3,"FSTR_%i",icopy);
918 }
919 else if( plate ==2){
920 sprintf(string2,"FTOA_0/FLTA_0");
921 icopy = strip+1;
922 sprintf(string3,"FSTR_%i",icopy);
923 }
924 else if( plate ==3){
925 sprintf(string2,"FTOB_2/FLTB_0");
926 icopy = strip+1;
927 sprintf(string3,"FSTR_%i",icopy);
928 }
929 else if( plate ==4){
930 sprintf(string2,"FTOC_2/FLTC_0");
931 icopy = strip+1;
932 sprintf(string3,"FSTR_%i",icopy);
933 }
934
935 sprintf(path,"%s/%s/%s/FSEN_0",string1,string2,string3);
936
937}
938
a6a9820c 939//_____________________________________________________________________________
940void AliTOFGeometryV4::GetPos(Int_t *det, Float_t *pos)
941{
942//
943// Returns space point coor (x,y,z) (cm) for Detector
944// Indices (iSect,iPlate,iStrip,iPadX,iPadZ)
945//
946 Char_t path[100];
947 GetVolumePath(det,path );
948 if (!gGeoManager) {
949 printf("ERROR: no TGeo\n");
950 }
951 gGeoManager->cd(path);
952 TGeoHMatrix global;
953 global = *gGeoManager->GetCurrentMatrix();
954 const Double_t *tr = global.GetTranslation();
955
956 pos[0]=tr[0];
957 pos[1]=tr[1];
958 pos[2]=tr[2];
959}
960//_____________________________________________________________________________