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526ddf0e | 1 | #include <iostream> |
a1a695e5 | 2 | |
526ddf0e | 3 | #include <TDatabasePDG.h> |
4 | #include <TRandom.h> | |
5 | #include <TH2F.h> | |
a1a695e5 | 6 | #include <TGeoGlobalMagField.h> |
32438f4e | 7 | #include <TSpline.h> |
cd8ed0ac | 8 | #include <TObjString.h> |
0403120d | 9 | #include <TROOT.h> |
a1a695e5 | 10 | |
b0c26b55 | 11 | #include <AliLog.h> |
a1a695e5 | 12 | #include <AliTPCROC.h> |
13 | #include <AliTrackPointArray.h> | |
526ddf0e | 14 | #include <AliTrackerBase.h> |
15 | #include <AliCDBManager.h> | |
16 | #include <AliTPCParam.h> | |
17 | #include <AliGeomManager.h> | |
18 | #include <AliTPCcalibDB.h> | |
526ddf0e | 19 | #include <AliTPCclusterMI.h> |
a1a695e5 | 20 | #include <AliTPCSpaceCharge3D.h> |
32438f4e | 21 | #include <AliTPCROC.h> |
0403120d | 22 | #include <AliExternalTrackParam.h> |
a1a695e5 | 23 | |
24 | #include "AliToyMCEvent.h" | |
25 | #include "AliToyMCTrack.h" | |
26 | ||
27 | #include "AliToyMCEventGenerator.h" | |
28 | ||
de0014b7 | 29 | ClassImp(AliToyMCEventGenerator); |
526ddf0e | 30 | |
31 | ||
de0014b7 | 32 | AliToyMCEventGenerator::AliToyMCEventGenerator() |
526ddf0e | 33 | :TObject() |
34 | ,fTPCParam(0x0) | |
a1a695e5 | 35 | ,fEvent(0x0) |
223d9e38 | 36 | ,fCurrentTrack(0) |
37 | ,fTPCCorrection(0x0) | |
38 | ,fCorrectionFile("$ALICE_ROOT/TPC/Calib/maps/SC_NeCO2_eps5_50kHz_precal.lookup.root") | |
a1a695e5 | 39 | ,fOutputFileName("toyMC.root") |
40 | ,fOutFile(0x0) | |
41 | ,fOutTree(0x0) | |
d92b8630 | 42 | ,fUseStepCorrection(kFALSE) |
d1cf83f5 | 43 | ,fUseMaterialBudget(kFALSE) |
0403120d | 44 | ,fIsLaser(kTRUE) |
526ddf0e | 45 | { |
526ddf0e | 46 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); |
47 | fTPCParam->ReadGeoMatrices(); | |
223d9e38 | 48 | gRandom->SetSeed(); |
526ddf0e | 49 | } |
50 | //________________________________________________________________ | |
de0014b7 | 51 | AliToyMCEventGenerator::AliToyMCEventGenerator(const AliToyMCEventGenerator &gen) |
526ddf0e | 52 | :TObject(gen) |
a1a695e5 | 53 | ,fTPCParam(gen.fTPCParam) |
54 | ,fEvent(0x0) | |
223d9e38 | 55 | ,fCurrentTrack(0) |
56 | ,fTPCCorrection(gen.fTPCCorrection) | |
57 | ,fCorrectionFile(gen.fCorrectionFile) | |
a1a695e5 | 58 | ,fOutputFileName(gen.fOutputFileName) |
59 | ,fOutFile(0x0) | |
60 | ,fOutTree(0x0) | |
d92b8630 | 61 | ,fUseStepCorrection(gen.fUseStepCorrection) |
d1cf83f5 | 62 | ,fUseMaterialBudget(gen.fUseMaterialBudget) |
0403120d | 63 | ,fIsLaser(gen.fIsLaser) |
526ddf0e | 64 | { |
65 | // | |
223d9e38 | 66 | gRandom->SetSeed(); |
526ddf0e | 67 | } |
68 | //________________________________________________________________ | |
de0014b7 | 69 | AliToyMCEventGenerator::~AliToyMCEventGenerator() |
526ddf0e | 70 | { |
223d9e38 | 71 | delete fTPCCorrection; |
526ddf0e | 72 | } |
32438f4e | 73 | |
526ddf0e | 74 | //________________________________________________________________ |
a1a695e5 | 75 | Bool_t AliToyMCEventGenerator::DistortTrack(AliToyMCTrack &trackIn, Double_t t0) |
76 | { | |
77 | // | |
78 | // | |
79 | // | |
80 | ||
526ddf0e | 81 | if(!fTPCParam) { |
82 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); | |
83 | fTPCParam->ReadGeoMatrices(); | |
526ddf0e | 84 | } |
32438f4e | 85 | |
1e62e876 | 86 | MakeITSClusters(trackIn/*,t0*/); |
87 | MakeTPCClusters(trackIn, t0); | |
88 | MakeTRDClusters(trackIn/*,t0*/); | |
89 | ||
0403120d | 90 | return kTRUE; |
1e62e876 | 91 | } |
92 | //________________________________________________________________ | |
93 | void AliToyMCEventGenerator::MakeITSClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
94 | { | |
95 | //Upgrade ITS parameters | |
96 | const Int_t nITSLayers = 7; | |
97 | const Double_t ITSRadii[nITSLayers] = {2.2, 2.8, 3.6, 20.0, 22.0, 41.0, 43.0}; | |
98 | const Double_t lengthITS[nITSLayers] = {22.4, 24.2, 26.8, 78.0, 83.6, 142.4, 148.6}; | |
99 | ||
e83fd282 | 100 | //resolution of the point is 10um |
101 | const Float_t sigmaY = 0.001; | |
102 | const Float_t sigmaZ = 0.001; | |
103 | ||
104 | AliTrackPoint point; | |
105 | ||
1e62e876 | 106 | const Double_t kMaxSnp = 0.85; |
e83fd282 | 107 | // const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
1e62e876 | 108 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); |
109 | ||
0403120d | 110 | AliExternalTrackParam track(trackIn); |
1e62e876 | 111 | Double_t xyz[3] = {0.,0.,0.}; |
112 | ||
113 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
114 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[0])); | |
115 | return; | |
116 | } | |
117 | ||
118 | for(Int_t iLayer = 0; iLayer<nITSLayers; iLayer++){ | |
119 | ||
120 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
121 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[iLayer])); | |
122 | continue; | |
123 | } | |
e83fd282 | 124 | // since I don't know how to extract the volumeid of the ITS layers I use the following strategy: |
125 | // - rotate the track to the next integer angle | |
126 | // - use coordinates there and set as volumeid the integer angle | |
127 | // - in the reco one can then rotate the cluster to the global frame using the angle stored in the volume id | |
1e62e876 | 128 | track.GetXYZ(xyz); |
129 | ||
e83fd282 | 130 | // if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
1e62e876 | 131 | if (TMath::Abs(track.GetZ())>lengthITS[iLayer]/2) continue; |
e83fd282 | 132 | |
133 | ||
134 | // smear the ideal positions with the cluster resolution | |
135 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
136 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
137 | ||
138 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
139 | ||
140 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
1e62e876 | 141 | |
e83fd282 | 142 | trackIn.AddITSPoint(point)->SetUniqueID(trackIn.GetUniqueID()); |
1e62e876 | 143 | } |
144 | ||
145 | } | |
146 | //________________________________________________________________ | |
147 | void AliToyMCEventGenerator::MakeTRDClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
148 | ||
149 | { | |
150 | //Uses current TRD parameters | |
151 | const Int_t nTRDLayers = 6; | |
152 | const Double_t distToMid = 3.2 + 30./2; //dist to middle of drift region (radiator + half drift region) | |
153 | const Double_t TRDRadii[nTRDLayers] = {294.5 + distToMid, 307.1 + distToMid, 319.7 + distToMid, 332.3 + distToMid, 344.9 + distToMid, 357.5 + distToMid}; | |
154 | const Double_t lengthTRD[nTRDLayers] = {604.0, 634.0, 656.0, 686.0, 700.0, 700.0}; | |
155 | ||
e83fd282 | 156 | const Float_t sigmaY = 0.06; |
157 | const Float_t sigmaZ = 0.2; | |
1e62e876 | 158 | |
e83fd282 | 159 | AliTrackPoint point; |
160 | ||
1e62e876 | 161 | const Double_t kMaxSnp = 0.85; |
162 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
163 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
164 | ||
0403120d | 165 | AliExternalTrackParam track(trackIn); |
1e62e876 | 166 | Double_t xyz[3] = {0.,0.,0.}; |
167 | ||
168 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
169 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[0])); | |
170 | return; | |
171 | } | |
172 | ||
173 | for(Int_t iLayer = 0; iLayer<nTRDLayers; iLayer++){ | |
174 | ||
175 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
176 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[iLayer])); | |
177 | continue; | |
178 | } | |
179 | track.GetXYZ(xyz); | |
180 | ||
181 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; | |
182 | if (TMath::Abs(track.GetZ())>lengthTRD[iLayer]/2) continue; | |
183 | ||
e83fd282 | 184 | |
185 | // smear the ideal positions with the cluster resolution | |
186 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
187 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
188 | ||
189 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
190 | ||
191 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
192 | ||
193 | trackIn.AddTRDPoint(point)->SetUniqueID(trackIn.GetUniqueID()); | |
1e62e876 | 194 | } |
195 | ||
196 | } | |
197 | //________________________________________________________________ | |
198 | void AliToyMCEventGenerator::MakeTPCClusters(AliToyMCTrack &trackIn, Double_t t0) | |
199 | { | |
200 | ||
32438f4e | 201 | // make it big enough to hold all points |
202 | // store real number of generated points in the unique id | |
203 | const Int_t nMaxPoints=3000; | |
0403120d | 204 | static AliTrackPointArray pointArray0(nMaxPoints); //undistorted |
205 | static AliTrackPointArray pointArray1(nMaxPoints); //distorted | |
1e62e876 | 206 | |
32438f4e | 207 | //Create space point of undistorted and distorted clusters along the propagated track trajectory |
208 | CreateSpacePoints(trackIn,pointArray0,pointArray1); | |
209 | //Convert the space points into clusters in the local frame | |
210 | //for undistorted and distorted clusters using the same function | |
211 | ConvertTrackPointsToLocalClusters(pointArray0,trackIn,t0,0); | |
212 | ConvertTrackPointsToLocalClusters(pointArray1,trackIn,t0,1); | |
526ddf0e | 213 | |
526ddf0e | 214 | |
1e62e876 | 215 | } |
32438f4e | 216 | //________________________________________________________________ |
217 | void AliToyMCEventGenerator::CreateSpacePoints(AliToyMCTrack &trackIn, | |
218 | AliTrackPointArray &arrUdist, | |
219 | AliTrackPointArray &arrDist) | |
220 | { | |
221 | // | |
222 | // sample the track from the inner to the outer wall of the TPC | |
223 | // a graph is filled in local coordinates for later | |
224 | // | |
225 | ||
0403120d | 226 | Double_t kMaxSnp = 0.85; |
227 | if (fIsLaser) kMaxSnp=0.99; | |
32438f4e | 228 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
229 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
230 | ||
231 | const Double_t iFCRadius = 83.5; //radius constants found in AliTPCCorrection.cxx | |
232 | const Double_t oFCRadius = 254.5; | |
e83fd282 | 233 | |
234 | const Float_t kSigmaY=0.1; | |
235 | const Float_t kSigmaZ=0.1; | |
32438f4e | 236 | |
0403120d | 237 | AliExternalTrackParam track(trackIn); |
32438f4e | 238 | //!!! TODO: make this adjustable perhaps |
239 | const Double_t stepSize=0.1; | |
240 | Double_t xyz[3] = {0.,0.,0.}; | |
241 | Float_t xyzf[3] = {0.,0.,0.}; | |
242 | ||
a1a695e5 | 243 | //!!! when does the propagation not work, how often does it happen? |
0403120d | 244 | if (!AliTrackerBase::PropagateTrackTo(&track,iFCRadius,kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget) && !fIsLaser) { |
b0c26b55 | 245 | AliError(Form("Propagation to IFC: %.2f failed\n",iFCRadius)); |
32438f4e | 246 | return; |
b0c26b55 | 247 | } |
32438f4e | 248 | |
526ddf0e | 249 | Int_t npoints=0; |
b0c26b55 | 250 | |
32438f4e | 251 | for (Double_t radius=iFCRadius; radius<oFCRadius; radius+=stepSize){ |
b0c26b55 | 252 | //!!! changed from return 0 to continue -> Please check |
d1cf83f5 | 253 | if (!AliTrackerBase::PropagateTrackTo(&track,radius,kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { |
0403120d | 254 | AliError(Form("Propagation to r=%.2f (snp=%.2f) failed\n",radius,track.GetSnp())); |
b0c26b55 | 255 | continue; |
256 | } | |
526ddf0e | 257 | track.GetXYZ(xyz); |
32438f4e | 258 | |
b0c26b55 | 259 | //!!! Why is this smeared |
32438f4e | 260 | |
261 | xyzf[0]=Float_t(xyz[0]); | |
262 | xyzf[1]=Float_t(xyz[1]); | |
263 | xyzf[2]=Float_t(xyz[2]); | |
264 | ||
526ddf0e | 265 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
32438f4e | 266 | // if (TMath::Abs(track.GetX())<iFCRadius) continue; |
267 | // if (TMath::Abs(track.GetX())>oFCRadius) continue; | |
268 | ||
269 | ||
270 | AliTrackPoint pUdist; // undistorted space point | |
271 | AliTrackPoint pDist; // distorted space point | |
272 | // Set undistorted point | |
e83fd282 | 273 | SetPoint(xyzf,kSigmaY,kSigmaZ,pUdist); |
32438f4e | 274 | arrUdist.AddPoint(npoints, &pUdist); |
275 | Int_t sector=pUdist.GetVolumeID(); | |
32438f4e | 276 | |
277 | // set distorted point | |
526ddf0e | 278 | Float_t distPoint[3]={xyz[0],xyz[1],xyz[2]}; |
d92b8630 | 279 | Float_t dxyz[3]={0.,0.,0.}; |
280 | if (!fUseStepCorrection){ | |
223d9e38 | 281 | fTPCCorrection->DistortPoint(distPoint, sector); |
d92b8630 | 282 | } else { |
223d9e38 | 283 | fTPCCorrection->GetCorrectionIntegralDz(distPoint,sector,dxyz,5); |
d92b8630 | 284 | distPoint[0]-=dxyz[0]; |
285 | distPoint[1]-=dxyz[1]; | |
286 | distPoint[2]-=dxyz[2]; | |
287 | } | |
e83fd282 | 288 | SetPoint(distPoint,kSigmaY,kSigmaZ,pDist); |
32438f4e | 289 | arrDist.AddPoint(npoints, &pDist); |
32438f4e | 290 | |
291 | ++npoints; | |
526ddf0e | 292 | } |
32438f4e | 293 | |
294 | arrUdist.SetUniqueID(npoints); | |
295 | arrDist.SetUniqueID(npoints); | |
296 | } | |
526ddf0e | 297 | |
32438f4e | 298 | //________________________________________________________________ |
e83fd282 | 299 | void AliToyMCEventGenerator::SetPoint(Float_t xyz[3], Float_t sigmaY, Float_t sigmaZ, AliTrackPoint &point) |
32438f4e | 300 | { |
301 | // | |
302 | // make AliTrackPoint out of AliTPCclusterMI | |
303 | // | |
304 | ||
305 | //covariance at the local frame | |
306 | //assume 1mm distortion in y and z | |
307 | Int_t i[3]={0,0,0}; | |
e83fd282 | 308 | Float_t cov[6]={0,0,0, sigmaY*sigmaY,0,sigmaZ*sigmaZ}; |
32438f4e | 309 | |
310 | const Float_t alpha = -TMath::ATan2(xyz[1],xyz[0]); | |
311 | const Float_t sin = TMath::Sin(alpha), cos = TMath::Cos(alpha); | |
312 | ||
313 | Float_t newcov[6]; | |
314 | newcov[0] = cov[0]*cos*cos + 2*cov[1]*sin*cos + cov[3]*sin*sin; | |
315 | newcov[1] = cov[1]*(cos*cos-sin*sin) + (cov[3]-cov[0])*sin*cos; | |
316 | newcov[2] = cov[2]*cos + cov[4]*sin; | |
317 | newcov[3] = cov[0]*sin*sin - 2*cov[1]*sin*cos + cov[3]*cos*cos; | |
318 | newcov[4] = cov[4]*cos - cov[2]*sin; | |
319 | newcov[5] = cov[5]; | |
320 | ||
321 | // voluem ID to add later .... | |
322 | point.SetXYZ(xyz); | |
323 | point.SetCov(newcov); | |
d92b8630 | 324 | // abuse volume ID for the sector number |
32438f4e | 325 | point.SetVolumeID(fTPCParam->Transform0to1(xyz,i)); |
b0c26b55 | 326 | |
32438f4e | 327 | // TODO: Add sampled dE/dx (use SetCharge) |
328 | } | |
b0c26b55 | 329 | |
32438f4e | 330 | //________________________________________________________________ |
331 | void AliToyMCEventGenerator::ConvertTrackPointsToLocalClusters(AliTrackPointArray &arrPoints, | |
332 | AliToyMCTrack &tr, Double_t t0, Int_t type) | |
333 | { | |
334 | // | |
335 | // | |
336 | // | |
526ddf0e | 337 | |
32438f4e | 338 | const Int_t npoints=Int_t(arrPoints.GetUniqueID()); |
339 | Int_t secOld=-1; | |
340 | ||
341 | // create an array for graphs which are used for local interpolation | |
342 | // we need a new graph if the sector changed since then the local frame will also change | |
343 | TObjArray arrGraphsXY(72); | |
344 | arrGraphsXY.SetOwner(); | |
345 | TObjArray arrGraphsXZ(72); | |
346 | arrGraphsXZ.SetOwner(); | |
347 | AliTrackPoint p; | |
348 | //create initial graph | |
349 | TGraph *grXY=0x0; | |
350 | TGraph *grXZ=0x0; | |
351 | //row -> sector mapping | |
352 | Int_t rowMap[159]; | |
353 | for (Int_t irow=0; irow<159; ++irow) rowMap[irow]=-1; | |
354 | ||
355 | // 1. Step | |
356 | // Make from the list of global space points graphs in the local frame | |
357 | // one graph per sector is needed | |
358 | for (Int_t ipoint=0; ipoint<npoints; ++ipoint){ | |
359 | arrPoints.GetPoint(p,ipoint); | |
360 | Float_t xyz[3] = {p.GetX(),p.GetY(),p.GetZ()}; | |
361 | Int_t index[3] = {0,0,0}; | |
362 | Int_t row = fTPCParam->GetPadRow(xyz,index); | |
363 | // rotate space point to local frame | |
364 | // the angle is given by the VolumeID which was set in CrateSpacePoints | |
365 | const Int_t sec=p.GetVolumeID(); | |
366 | if (row<0 || (sec<36 && row>62) || row>95 ) continue; | |
367 | Double_t angle=((sec%18)*20.+10.)/TMath::RadToDeg(); | |
368 | AliTrackPoint pRot=p.Rotate(angle); | |
369 | const Int_t secrow=row+(sec>35)*63; | |
370 | if (rowMap[secrow]==-1) rowMap[secrow]=sec; | |
371 | // check if we need a new graph (sector change) | |
372 | if (secOld!=sec){ | |
373 | grXY=new TGraph; | |
374 | grXZ=new TGraph; | |
375 | arrGraphsXY.AddAt(grXY,sec); | |
376 | arrGraphsXZ.AddAt(grXZ,sec); | |
377 | } | |
b0c26b55 | 378 | |
32438f4e | 379 | //add coordinates in local frame for later interpolation |
380 | grXY->SetPoint(grXY->GetN(), pRot.GetX(), pRot.GetY()); | |
381 | grXZ->SetPoint(grXZ->GetN(), pRot.GetX(), pRot.GetZ()); | |
382 | secOld=sec; | |
383 | } | |
b0c26b55 | 384 | |
32438f4e | 385 | // 2. Step |
386 | // create in the center of each row a space point by using the graph to interpolate | |
387 | // the the center of the row. This is done in xy and xz | |
388 | TSpline3 *splXY=0x0; | |
389 | TSpline3 *splXZ=0x0; | |
390 | AliTPCclusterMI tempCl; | |
391 | secOld=-1; | |
392 | for (Int_t irow=0; irow<159; ++irow ){ | |
393 | const Int_t sec = rowMap[irow]; | |
394 | if (sec==-1) continue; | |
395 | const Int_t secrow = irow<63?irow:irow-63; | |
396 | Double_t localX = fTPCParam->GetPadRowRadii(sec,secrow); | |
397 | // get graph for the current row | |
398 | if (sec!=secOld){ | |
399 | delete splXY; | |
400 | splXY=0x0; | |
401 | delete splXZ; | |
402 | splXZ=0x0; | |
403 | ||
404 | grXY=(TGraph*)arrGraphsXY.At(sec); | |
405 | grXZ=(TGraph*)arrGraphsXZ.At(sec); | |
406 | if (!grXY) continue; | |
b0c26b55 | 407 | |
05da1b4e | 408 | // if(grXY->GetN()>1 && grXZ->GetN()>1) { //causes segmentation violation if N==1 |
409 | // splXY=new TSpline3("splXY",grXY); | |
410 | // splXZ=new TSpline3("splXZ",grXZ); | |
411 | // } | |
412 | // else { | |
544076ea | 413 | //TODO: make a cluster also in the sector w only one space point? |
05da1b4e | 414 | // continue; |
544076ea | 415 | // Double_t tempX=0., tempY = 0., tempZ = 0.; |
416 | ||
417 | // grXY->GetPoint(0,tempX,localY); | |
418 | // grXZ->GetPoint(0,tempX,localZ); | |
05da1b4e | 419 | // } |
544076ea | 420 | |
32438f4e | 421 | } |
422 | secOld=sec; | |
b0c26b55 | 423 | |
32438f4e | 424 | // check we are in an active area |
05da1b4e | 425 | // if (splXY->FindX(localX)<1 || splXZ->FindX(localX)<1) continue; |
426 | if ( localX<grXY->GetX()[0] || localX>grXY->GetX()[grXY->GetN()-1] || localX<grXZ->GetX()[0] || localX>grXZ->GetX()[grXZ->GetN()-1]) continue; | |
b0c26b55 | 427 | |
32438f4e | 428 | //get interpolated value at the center for the pad row |
429 | // using splines | |
05da1b4e | 430 | // const Double_t localY=splXY->Eval(localX/*,0x0,"S"*/); |
431 | // const Double_t localZ=splXZ->Eval(localX/*,0x0,"S"*/); | |
432 | const Double_t localY=grXY->Eval(localX/*,0x0,"S"*/); | |
433 | const Double_t localZ=grXZ->Eval(localX/*,0x0,"S"*/); | |
32438f4e | 434 | Float_t xyz[3]={localX,localY,localZ}; |
526ddf0e | 435 | |
32438f4e | 436 | if (!SetupCluster(tempCl,xyz,sec,t0)) continue; |
d1cf83f5 | 437 | tempCl.SetLabel(tr.GetUniqueID(), 0); |
0403120d | 438 | |
32438f4e | 439 | if (type==0) tr.AddSpacePoint(tempCl); |
440 | else tr.AddDistortedSpacePoint(tempCl); | |
441 | // printf("SetupCluster %3d: (%.2f, %.2f, %.2f), %d, %.2f\n",irow,xyz[0],xyz[1],xyz[2],sec,t0); | |
442 | } | |
526ddf0e | 443 | |
32438f4e | 444 | delete splXY; |
445 | splXY=0x0; | |
446 | delete splXZ; | |
447 | splXZ=0x0; | |
448 | ||
449 | } | |
526ddf0e | 450 | |
32438f4e | 451 | //________________________________________________________________ |
452 | Bool_t AliToyMCEventGenerator::SetupCluster(AliTPCclusterMI &tempCl, Float_t xyz[3], Int_t sec, Double_t t0) | |
453 | { | |
454 | // | |
455 | // | |
456 | // | |
526ddf0e | 457 | |
e83fd282 | 458 | // intrinsic cluster resolution is 1mm |
32438f4e | 459 | const Double_t kSigmaY = 0.1; |
460 | const Double_t kSigmaZ = 0.1; | |
461 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
462 | //TODO: Get this from the OCDB at some point? | |
463 | const Double_t kDriftVel = fTPCParam->GetDriftV(); | |
e83fd282 | 464 | |
465 | // smear the ideal positions with the cluster resolution | |
466 | xyz[1]+=gRandom->Gaus(0,kSigmaY); | |
467 | xyz[2]+=gRandom->Gaus(0,kSigmaZ); | |
526ddf0e | 468 | |
32438f4e | 469 | tempCl.SetX(xyz[0]); |
470 | tempCl.SetY(xyz[1]); | |
471 | tempCl.SetZ(xyz[2]); | |
526ddf0e | 472 | |
32438f4e | 473 | tempCl.SetSigmaY2(kSigmaY*kSigmaY); |
474 | tempCl.SetSigmaZ2(kSigmaZ*kSigmaZ); | |
475 | ||
476 | // transform from the local coordinates to the coordinates expressed in pad coordinates | |
477 | Int_t index[3] = {0,sec,0}; | |
478 | fTPCParam->Transform2to3(xyz,index); | |
479 | fTPCParam->Transform3to4(xyz,index); | |
480 | fTPCParam->Transform4to8(xyz,index); | |
481 | ||
482 | const Int_t row = index[2]; | |
483 | const Int_t nPads = fTPCParam->GetNPads(sec, row); | |
484 | // pad is fractional, but it needs to be shifted from the center | |
485 | // to the edge of the row | |
486 | const Float_t pad = xyz[1] + nPads/2; | |
487 | ||
488 | tempCl.SetRow(row); | |
489 | tempCl.SetPad(pad); | |
490 | Float_t timeBin=Float_t(t0 + (kMaxZ0-TMath::Abs(tempCl.GetZ()))/kDriftVel); | |
491 | tempCl.SetTimeBin(timeBin); // set time as t0 + drift time from dist z | |
492 | tempCl.SetDetector(sec); | |
493 | ||
494 | //check if we are in the active area | |
495 | if (pad<0 || pad>=nPads) return kFALSE; | |
496 | ||
497 | return kTRUE; | |
526ddf0e | 498 | } |
32438f4e | 499 | |
a1a695e5 | 500 | //________________________________________________________________ |
501 | Bool_t AliToyMCEventGenerator::ConnectOutputFile() | |
502 | { | |
503 | // | |
504 | // Create the output file name and tree and connect the event | |
505 | // | |
506 | ||
507 | fOutFile = new TFile(fOutputFileName.Data(),"recreate"); | |
508 | ||
509 | if (!fOutFile || !fOutFile->IsOpen()){ | |
510 | delete fOutFile; | |
511 | fOutFile=0x0; | |
512 | return kFALSE; | |
513 | } | |
514 | ||
515 | fOutTree = new TTree("toyMCtree","Tree with toyMC simulation"); | |
516 | fOutTree->Branch("event","AliToyMCEvent",&fEvent); | |
517 | ||
0403120d | 518 | gROOT->cd(); |
519 | ||
a1a695e5 | 520 | return kTRUE; |
521 | } | |
522 | ||
523 | //________________________________________________________________ | |
524 | Bool_t AliToyMCEventGenerator::CloseOutputFile() | |
525 | { | |
526 | // | |
527 | // close the output file | |
528 | // | |
529 | if (!fOutFile) return kFALSE; | |
530 | fOutFile->Write(); | |
531 | fOutFile->Close(); | |
532 | delete fOutFile; | |
533 | fOutFile=0x0; | |
534 | ||
535 | return kTRUE; | |
536 | } | |
537 | ||
538 | //________________________________________________________________ | |
539 | void AliToyMCEventGenerator::FillTree() | |
540 | { | |
541 | // fill the tree | |
0403120d | 542 | if (fOutTree&&fEvent) fOutTree->Fill(); |
a1a695e5 | 543 | } |
544 | ||
cd8ed0ac | 545 | //________________________________________________________________ |
223d9e38 | 546 | void AliToyMCEventGenerator::SetSpaceCharge(EEpsilon epsilon, EGasType gasType/*=kNeCO2_9010*/, |
547 | ECollRate collRate/*=k50kHz*/, ECorrection corrType/*=kLookup*/) | |
cd8ed0ac | 548 | { |
549 | // | |
550 | // Set the space charge conditions | |
551 | // | |
223d9e38 | 552 | fCorrectionFile="$ALICE_ROOT/TPC/Calib/maps/SC"; |
cd8ed0ac | 553 | switch (gasType) { |
554 | case kNeCO2_9010: | |
223d9e38 | 555 | fCorrectionFile.Append("_NeCO2"); |
cd8ed0ac | 556 | break; |
d5715c32 | 557 | case kNeCO2N2_90105: |
558 | fCorrectionFile.Append("_NeCO2N2"); | |
559 | break; | |
cd8ed0ac | 560 | } |
561 | switch (epsilon) { | |
562 | case kEps5: | |
223d9e38 | 563 | fCorrectionFile.Append("_eps5"); |
cd8ed0ac | 564 | break; |
565 | case kEps10: | |
223d9e38 | 566 | fCorrectionFile.Append("_eps10"); |
cd8ed0ac | 567 | break; |
568 | case kEps20: | |
223d9e38 | 569 | fCorrectionFile.Append("_eps20"); |
cd8ed0ac | 570 | break; |
d5715c32 | 571 | case kEps25: |
572 | fCorrectionFile.Append("_eps25"); | |
573 | break; | |
574 | case kEps30: | |
575 | fCorrectionFile.Append("_eps30"); | |
576 | break; | |
577 | case kEps35: | |
578 | fCorrectionFile.Append("_eps35"); | |
579 | break; | |
580 | case kEps40: | |
581 | fCorrectionFile.Append("_eps40"); | |
582 | break; | |
cd8ed0ac | 583 | } |
584 | switch (collRate) { | |
585 | case k50kHz: | |
223d9e38 | 586 | fCorrectionFile.Append("_50kHz"); |
587 | break; | |
588 | } | |
589 | switch (corrType) { | |
590 | case kLookup: | |
591 | fCorrectionFile.Append("_precal.lookup.root"); | |
592 | break; | |
593 | case kSpaceChargeFile: | |
594 | fCorrectionFile.Append("_precal.root"); | |
cd8ed0ac | 595 | break; |
596 | } | |
cd8ed0ac | 597 | } |
598 | ||
599 | //________________________________________________________________ | |
600 | void AliToyMCEventGenerator::InitSpaceCharge() | |
601 | { | |
602 | // | |
603 | // init the space charge conditions | |
604 | // this should be called after the tree was connected | |
605 | // | |
606 | ||
223d9e38 | 607 | AliInfo(Form("Using space charge map file: '%s'",fCorrectionFile.Data())); |
608 | ||
609 | TString corrName("map"); | |
610 | ||
611 | // allow for specifying an object name for the AliTPCCorrection in the file name | |
612 | // separated by a ':' | |
613 | TObjArray *arr=fCorrectionFile.Tokenize(":"); | |
614 | if (arr->GetEntriesFast()>1) { | |
615 | fCorrectionFile=arr->At(0)->GetName(); | |
616 | corrName=arr->At(1)->GetName(); | |
617 | } | |
618 | delete arr; | |
619 | ||
cd8ed0ac | 620 | |
223d9e38 | 621 | TFile f(fCorrectionFile.Data()); |
622 | fTPCCorrection=(AliTPCSpaceCharge3D*)f.Get("map"); | |
cd8ed0ac | 623 | |
624 | if (fOutTree){ | |
625 | AliInfo("Attaching space charge map file name to the tree"); | |
223d9e38 | 626 | fOutTree->GetUserInfo()->Add(new TObjString(fCorrectionFile.Data())); |
cd8ed0ac | 627 | } |
628 | } |