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526ddf0e | 1 | #include <iostream> |
2dd02504 | 2 | #include <fstream> |
a1a695e5 | 3 | |
526ddf0e | 4 | #include <TDatabasePDG.h> |
5 | #include <TRandom.h> | |
6 | #include <TH2F.h> | |
a1a695e5 | 7 | #include <TGeoGlobalMagField.h> |
32438f4e | 8 | #include <TSpline.h> |
cd8ed0ac | 9 | #include <TObjString.h> |
0403120d | 10 | #include <TROOT.h> |
2dd02504 | 11 | #include <TSystem.h> |
12 | #include <TObjArray.h> | |
862220e2 | 13 | #include <TLinearFitter.h> |
a1a695e5 | 14 | |
b0c26b55 | 15 | #include <AliLog.h> |
a1a695e5 | 16 | #include <AliTPCROC.h> |
17 | #include <AliTrackPointArray.h> | |
526ddf0e | 18 | #include <AliTrackerBase.h> |
19 | #include <AliCDBManager.h> | |
20 | #include <AliTPCParam.h> | |
21 | #include <AliGeomManager.h> | |
22 | #include <AliTPCcalibDB.h> | |
526ddf0e | 23 | #include <AliTPCclusterMI.h> |
a1a695e5 | 24 | #include <AliTPCSpaceCharge3D.h> |
32438f4e | 25 | #include <AliTPCROC.h> |
0403120d | 26 | #include <AliExternalTrackParam.h> |
a1a695e5 | 27 | |
28 | #include "AliToyMCEvent.h" | |
29 | #include "AliToyMCTrack.h" | |
30 | ||
31 | #include "AliToyMCEventGenerator.h" | |
32 | ||
de0014b7 | 33 | ClassImp(AliToyMCEventGenerator); |
526ddf0e | 34 | |
35 | ||
de0014b7 | 36 | AliToyMCEventGenerator::AliToyMCEventGenerator() |
526ddf0e | 37 | :TObject() |
38 | ,fTPCParam(0x0) | |
a1a695e5 | 39 | ,fEvent(0x0) |
223d9e38 | 40 | ,fCurrentTrack(0) |
41 | ,fTPCCorrection(0x0) | |
862220e2 | 42 | ,fTPCCorrectionAv(0x0) |
2dd02504 | 43 | ,fSCList(0x0) |
44 | ,fSCListFile() | |
223d9e38 | 45 | ,fCorrectionFile("$ALICE_ROOT/TPC/Calib/maps/SC_NeCO2_eps5_50kHz_precal.lookup.root") |
a1a695e5 | 46 | ,fOutputFileName("toyMC.root") |
47 | ,fOutFile(0x0) | |
48 | ,fOutTree(0x0) | |
d92b8630 | 49 | ,fUseStepCorrection(kFALSE) |
d1cf83f5 | 50 | ,fUseMaterialBudget(kFALSE) |
0403120d | 51 | ,fIsLaser(kTRUE) |
2dd02504 | 52 | ,fPrereadSCList(kFALSE) |
526ddf0e | 53 | { |
526ddf0e | 54 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); |
55 | fTPCParam->ReadGeoMatrices(); | |
223d9e38 | 56 | gRandom->SetSeed(); |
526ddf0e | 57 | } |
58 | //________________________________________________________________ | |
de0014b7 | 59 | AliToyMCEventGenerator::AliToyMCEventGenerator(const AliToyMCEventGenerator &gen) |
526ddf0e | 60 | :TObject(gen) |
a1a695e5 | 61 | ,fTPCParam(gen.fTPCParam) |
62 | ,fEvent(0x0) | |
223d9e38 | 63 | ,fCurrentTrack(0) |
64 | ,fTPCCorrection(gen.fTPCCorrection) | |
862220e2 | 65 | ,fTPCCorrectionAv(0x0) |
2dd02504 | 66 | ,fSCList(gen.fSCList) |
67 | ,fSCListFile(gen.fSCListFile) | |
223d9e38 | 68 | ,fCorrectionFile(gen.fCorrectionFile) |
a1a695e5 | 69 | ,fOutputFileName(gen.fOutputFileName) |
70 | ,fOutFile(0x0) | |
71 | ,fOutTree(0x0) | |
d92b8630 | 72 | ,fUseStepCorrection(gen.fUseStepCorrection) |
d1cf83f5 | 73 | ,fUseMaterialBudget(gen.fUseMaterialBudget) |
0403120d | 74 | ,fIsLaser(gen.fIsLaser) |
2dd02504 | 75 | ,fPrereadSCList(gen.fPrereadSCList) |
526ddf0e | 76 | { |
77 | // | |
223d9e38 | 78 | gRandom->SetSeed(); |
526ddf0e | 79 | } |
80 | //________________________________________________________________ | |
de0014b7 | 81 | AliToyMCEventGenerator::~AliToyMCEventGenerator() |
526ddf0e | 82 | { |
2dd02504 | 83 | if (HasSCList() &&!fPrereadSCList) delete fTPCCorrection; |
84 | delete fSCList; | |
526ddf0e | 85 | } |
32438f4e | 86 | |
526ddf0e | 87 | //________________________________________________________________ |
a1a695e5 | 88 | Bool_t AliToyMCEventGenerator::DistortTrack(AliToyMCTrack &trackIn, Double_t t0) |
89 | { | |
90 | // | |
91 | // | |
92 | // | |
93 | ||
526ddf0e | 94 | if(!fTPCParam) { |
95 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); | |
96 | fTPCParam->ReadGeoMatrices(); | |
526ddf0e | 97 | } |
32438f4e | 98 | |
1e62e876 | 99 | MakeITSClusters(trackIn/*,t0*/); |
100 | MakeTPCClusters(trackIn, t0); | |
101 | MakeTRDClusters(trackIn/*,t0*/); | |
102 | ||
0403120d | 103 | return kTRUE; |
1e62e876 | 104 | } |
105 | //________________________________________________________________ | |
106 | void AliToyMCEventGenerator::MakeITSClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
107 | { | |
108 | //Upgrade ITS parameters | |
109 | const Int_t nITSLayers = 7; | |
110 | const Double_t ITSRadii[nITSLayers] = {2.2, 2.8, 3.6, 20.0, 22.0, 41.0, 43.0}; | |
111 | const Double_t lengthITS[nITSLayers] = {22.4, 24.2, 26.8, 78.0, 83.6, 142.4, 148.6}; | |
112 | ||
e83fd282 | 113 | //resolution of the point is 10um |
114 | const Float_t sigmaY = 0.001; | |
115 | const Float_t sigmaZ = 0.001; | |
116 | ||
117 | AliTrackPoint point; | |
118 | ||
1e62e876 | 119 | const Double_t kMaxSnp = 0.85; |
e83fd282 | 120 | // const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
1e62e876 | 121 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); |
122 | ||
0403120d | 123 | AliExternalTrackParam track(trackIn); |
1e62e876 | 124 | Double_t xyz[3] = {0.,0.,0.}; |
125 | ||
126 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
127 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[0])); | |
128 | return; | |
129 | } | |
130 | ||
131 | for(Int_t iLayer = 0; iLayer<nITSLayers; iLayer++){ | |
132 | ||
133 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
134 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[iLayer])); | |
135 | continue; | |
136 | } | |
e83fd282 | 137 | // since I don't know how to extract the volumeid of the ITS layers I use the following strategy: |
138 | // - rotate the track to the next integer angle | |
139 | // - use coordinates there and set as volumeid the integer angle | |
140 | // - in the reco one can then rotate the cluster to the global frame using the angle stored in the volume id | |
1e62e876 | 141 | track.GetXYZ(xyz); |
142 | ||
e83fd282 | 143 | // if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
1e62e876 | 144 | if (TMath::Abs(track.GetZ())>lengthITS[iLayer]/2) continue; |
e83fd282 | 145 | |
146 | ||
147 | // smear the ideal positions with the cluster resolution | |
148 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
149 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
150 | ||
151 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
152 | ||
153 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
1e62e876 | 154 | |
e83fd282 | 155 | trackIn.AddITSPoint(point)->SetUniqueID(trackIn.GetUniqueID()); |
1e62e876 | 156 | } |
157 | ||
158 | } | |
159 | //________________________________________________________________ | |
160 | void AliToyMCEventGenerator::MakeTRDClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
161 | ||
162 | { | |
163 | //Uses current TRD parameters | |
164 | const Int_t nTRDLayers = 6; | |
165 | const Double_t distToMid = 3.2 + 30./2; //dist to middle of drift region (radiator + half drift region) | |
166 | const Double_t TRDRadii[nTRDLayers] = {294.5 + distToMid, 307.1 + distToMid, 319.7 + distToMid, 332.3 + distToMid, 344.9 + distToMid, 357.5 + distToMid}; | |
167 | const Double_t lengthTRD[nTRDLayers] = {604.0, 634.0, 656.0, 686.0, 700.0, 700.0}; | |
168 | ||
e83fd282 | 169 | const Float_t sigmaY = 0.06; |
170 | const Float_t sigmaZ = 0.2; | |
1e62e876 | 171 | |
e83fd282 | 172 | AliTrackPoint point; |
173 | ||
1e62e876 | 174 | const Double_t kMaxSnp = 0.85; |
175 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
176 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
177 | ||
0403120d | 178 | AliExternalTrackParam track(trackIn); |
1e62e876 | 179 | Double_t xyz[3] = {0.,0.,0.}; |
180 | ||
181 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
182 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[0])); | |
183 | return; | |
184 | } | |
185 | ||
186 | for(Int_t iLayer = 0; iLayer<nTRDLayers; iLayer++){ | |
187 | ||
188 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
189 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[iLayer])); | |
190 | continue; | |
191 | } | |
192 | track.GetXYZ(xyz); | |
193 | ||
194 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; | |
195 | if (TMath::Abs(track.GetZ())>lengthTRD[iLayer]/2) continue; | |
196 | ||
e83fd282 | 197 | |
198 | // smear the ideal positions with the cluster resolution | |
199 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
200 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
201 | ||
202 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
203 | ||
204 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
205 | ||
206 | trackIn.AddTRDPoint(point)->SetUniqueID(trackIn.GetUniqueID()); | |
1e62e876 | 207 | } |
208 | ||
209 | } | |
210 | //________________________________________________________________ | |
211 | void AliToyMCEventGenerator::MakeTPCClusters(AliToyMCTrack &trackIn, Double_t t0) | |
212 | { | |
213 | ||
32438f4e | 214 | // make it big enough to hold all points |
215 | // store real number of generated points in the unique id | |
216 | const Int_t nMaxPoints=3000; | |
0403120d | 217 | static AliTrackPointArray pointArray0(nMaxPoints); //undistorted |
218 | static AliTrackPointArray pointArray1(nMaxPoints); //distorted | |
1e62e876 | 219 | |
32438f4e | 220 | //Create space point of undistorted and distorted clusters along the propagated track trajectory |
221 | CreateSpacePoints(trackIn,pointArray0,pointArray1); | |
222 | //Convert the space points into clusters in the local frame | |
223 | //for undistorted and distorted clusters using the same function | |
224 | ConvertTrackPointsToLocalClusters(pointArray0,trackIn,t0,0); | |
225 | ConvertTrackPointsToLocalClusters(pointArray1,trackIn,t0,1); | |
526ddf0e | 226 | |
526ddf0e | 227 | |
1e62e876 | 228 | } |
32438f4e | 229 | //________________________________________________________________ |
230 | void AliToyMCEventGenerator::CreateSpacePoints(AliToyMCTrack &trackIn, | |
231 | AliTrackPointArray &arrUdist, | |
232 | AliTrackPointArray &arrDist) | |
233 | { | |
234 | // | |
235 | // sample the track from the inner to the outer wall of the TPC | |
236 | // a graph is filled in local coordinates for later | |
237 | // | |
238 | ||
0403120d | 239 | Double_t kMaxSnp = 0.85; |
240 | if (fIsLaser) kMaxSnp=0.99; | |
32438f4e | 241 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
242 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
243 | ||
244 | const Double_t iFCRadius = 83.5; //radius constants found in AliTPCCorrection.cxx | |
245 | const Double_t oFCRadius = 254.5; | |
e83fd282 | 246 | |
247 | const Float_t kSigmaY=0.1; | |
248 | const Float_t kSigmaZ=0.1; | |
32438f4e | 249 | |
0403120d | 250 | AliExternalTrackParam track(trackIn); |
32438f4e | 251 | //!!! TODO: make this adjustable perhaps |
252 | const Double_t stepSize=0.1; | |
253 | Double_t xyz[3] = {0.,0.,0.}; | |
254 | Float_t xyzf[3] = {0.,0.,0.}; | |
255 | ||
a1a695e5 | 256 | //!!! when does the propagation not work, how often does it happen? |
0403120d | 257 | if (!AliTrackerBase::PropagateTrackTo(&track,iFCRadius,kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget) && !fIsLaser) { |
b0c26b55 | 258 | AliError(Form("Propagation to IFC: %.2f failed\n",iFCRadius)); |
32438f4e | 259 | return; |
b0c26b55 | 260 | } |
32438f4e | 261 | |
526ddf0e | 262 | Int_t npoints=0; |
b0c26b55 | 263 | |
32438f4e | 264 | for (Double_t radius=iFCRadius; radius<oFCRadius; radius+=stepSize){ |
b0c26b55 | 265 | //!!! changed from return 0 to continue -> Please check |
d1cf83f5 | 266 | if (!AliTrackerBase::PropagateTrackTo(&track,radius,kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { |
0403120d | 267 | AliError(Form("Propagation to r=%.2f (snp=%.2f) failed\n",radius,track.GetSnp())); |
b0c26b55 | 268 | continue; |
269 | } | |
526ddf0e | 270 | track.GetXYZ(xyz); |
32438f4e | 271 | |
b0c26b55 | 272 | //!!! Why is this smeared |
32438f4e | 273 | |
274 | xyzf[0]=Float_t(xyz[0]); | |
275 | xyzf[1]=Float_t(xyz[1]); | |
276 | xyzf[2]=Float_t(xyz[2]); | |
277 | ||
526ddf0e | 278 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
32438f4e | 279 | // if (TMath::Abs(track.GetX())<iFCRadius) continue; |
280 | // if (TMath::Abs(track.GetX())>oFCRadius) continue; | |
281 | ||
282 | ||
283 | AliTrackPoint pUdist; // undistorted space point | |
284 | AliTrackPoint pDist; // distorted space point | |
285 | // Set undistorted point | |
e83fd282 | 286 | SetPoint(xyzf,kSigmaY,kSigmaZ,pUdist); |
32438f4e | 287 | arrUdist.AddPoint(npoints, &pUdist); |
288 | Int_t sector=pUdist.GetVolumeID(); | |
32438f4e | 289 | |
290 | // set distorted point | |
526ddf0e | 291 | Float_t distPoint[3]={xyz[0],xyz[1],xyz[2]}; |
d92b8630 | 292 | Float_t dxyz[3]={0.,0.,0.}; |
293 | if (!fUseStepCorrection){ | |
223d9e38 | 294 | fTPCCorrection->DistortPoint(distPoint, sector); |
d92b8630 | 295 | } else { |
223d9e38 | 296 | fTPCCorrection->GetCorrectionIntegralDz(distPoint,sector,dxyz,5); |
d92b8630 | 297 | distPoint[0]-=dxyz[0]; |
298 | distPoint[1]-=dxyz[1]; | |
299 | distPoint[2]-=dxyz[2]; | |
300 | } | |
e83fd282 | 301 | SetPoint(distPoint,kSigmaY,kSigmaZ,pDist); |
32438f4e | 302 | arrDist.AddPoint(npoints, &pDist); |
32438f4e | 303 | |
304 | ++npoints; | |
526ddf0e | 305 | } |
32438f4e | 306 | |
307 | arrUdist.SetUniqueID(npoints); | |
308 | arrDist.SetUniqueID(npoints); | |
309 | } | |
526ddf0e | 310 | |
32438f4e | 311 | //________________________________________________________________ |
e83fd282 | 312 | void AliToyMCEventGenerator::SetPoint(Float_t xyz[3], Float_t sigmaY, Float_t sigmaZ, AliTrackPoint &point) |
32438f4e | 313 | { |
314 | // | |
315 | // make AliTrackPoint out of AliTPCclusterMI | |
316 | // | |
317 | ||
318 | //covariance at the local frame | |
319 | //assume 1mm distortion in y and z | |
320 | Int_t i[3]={0,0,0}; | |
e83fd282 | 321 | Float_t cov[6]={0,0,0, sigmaY*sigmaY,0,sigmaZ*sigmaZ}; |
32438f4e | 322 | |
323 | const Float_t alpha = -TMath::ATan2(xyz[1],xyz[0]); | |
324 | const Float_t sin = TMath::Sin(alpha), cos = TMath::Cos(alpha); | |
325 | ||
326 | Float_t newcov[6]; | |
327 | newcov[0] = cov[0]*cos*cos + 2*cov[1]*sin*cos + cov[3]*sin*sin; | |
328 | newcov[1] = cov[1]*(cos*cos-sin*sin) + (cov[3]-cov[0])*sin*cos; | |
329 | newcov[2] = cov[2]*cos + cov[4]*sin; | |
330 | newcov[3] = cov[0]*sin*sin - 2*cov[1]*sin*cos + cov[3]*cos*cos; | |
331 | newcov[4] = cov[4]*cos - cov[2]*sin; | |
332 | newcov[5] = cov[5]; | |
333 | ||
334 | // voluem ID to add later .... | |
335 | point.SetXYZ(xyz); | |
336 | point.SetCov(newcov); | |
d92b8630 | 337 | // abuse volume ID for the sector number |
32438f4e | 338 | point.SetVolumeID(fTPCParam->Transform0to1(xyz,i)); |
b0c26b55 | 339 | |
32438f4e | 340 | // TODO: Add sampled dE/dx (use SetCharge) |
341 | } | |
b0c26b55 | 342 | |
32438f4e | 343 | //________________________________________________________________ |
344 | void AliToyMCEventGenerator::ConvertTrackPointsToLocalClusters(AliTrackPointArray &arrPoints, | |
345 | AliToyMCTrack &tr, Double_t t0, Int_t type) | |
346 | { | |
347 | // | |
348 | // | |
349 | // | |
526ddf0e | 350 | |
32438f4e | 351 | const Int_t npoints=Int_t(arrPoints.GetUniqueID()); |
352 | Int_t secOld=-1; | |
353 | ||
354 | // create an array for graphs which are used for local interpolation | |
355 | // we need a new graph if the sector changed since then the local frame will also change | |
356 | TObjArray arrGraphsXY(72); | |
357 | arrGraphsXY.SetOwner(); | |
358 | TObjArray arrGraphsXZ(72); | |
359 | arrGraphsXZ.SetOwner(); | |
360 | AliTrackPoint p; | |
361 | //create initial graph | |
362 | TGraph *grXY=0x0; | |
363 | TGraph *grXZ=0x0; | |
364 | //row -> sector mapping | |
365 | Int_t rowMap[159]; | |
366 | for (Int_t irow=0; irow<159; ++irow) rowMap[irow]=-1; | |
367 | ||
368 | // 1. Step | |
369 | // Make from the list of global space points graphs in the local frame | |
370 | // one graph per sector is needed | |
371 | for (Int_t ipoint=0; ipoint<npoints; ++ipoint){ | |
372 | arrPoints.GetPoint(p,ipoint); | |
373 | Float_t xyz[3] = {p.GetX(),p.GetY(),p.GetZ()}; | |
374 | Int_t index[3] = {0,0,0}; | |
375 | Int_t row = fTPCParam->GetPadRow(xyz,index); | |
376 | // rotate space point to local frame | |
377 | // the angle is given by the VolumeID which was set in CrateSpacePoints | |
378 | const Int_t sec=p.GetVolumeID(); | |
379 | if (row<0 || (sec<36 && row>62) || row>95 ) continue; | |
380 | Double_t angle=((sec%18)*20.+10.)/TMath::RadToDeg(); | |
381 | AliTrackPoint pRot=p.Rotate(angle); | |
382 | const Int_t secrow=row+(sec>35)*63; | |
383 | if (rowMap[secrow]==-1) rowMap[secrow]=sec; | |
384 | // check if we need a new graph (sector change) | |
385 | if (secOld!=sec){ | |
386 | grXY=new TGraph; | |
387 | grXZ=new TGraph; | |
388 | arrGraphsXY.AddAt(grXY,sec); | |
389 | arrGraphsXZ.AddAt(grXZ,sec); | |
390 | } | |
b0c26b55 | 391 | |
32438f4e | 392 | //add coordinates in local frame for later interpolation |
393 | grXY->SetPoint(grXY->GetN(), pRot.GetX(), pRot.GetY()); | |
394 | grXZ->SetPoint(grXZ->GetN(), pRot.GetX(), pRot.GetZ()); | |
395 | secOld=sec; | |
396 | } | |
b0c26b55 | 397 | |
32438f4e | 398 | // 2. Step |
399 | // create in the center of each row a space point by using the graph to interpolate | |
400 | // the the center of the row. This is done in xy and xz | |
401 | TSpline3 *splXY=0x0; | |
402 | TSpline3 *splXZ=0x0; | |
403 | AliTPCclusterMI tempCl; | |
404 | secOld=-1; | |
405 | for (Int_t irow=0; irow<159; ++irow ){ | |
406 | const Int_t sec = rowMap[irow]; | |
407 | if (sec==-1) continue; | |
408 | const Int_t secrow = irow<63?irow:irow-63; | |
409 | Double_t localX = fTPCParam->GetPadRowRadii(sec,secrow); | |
410 | // get graph for the current row | |
411 | if (sec!=secOld){ | |
412 | delete splXY; | |
413 | splXY=0x0; | |
414 | delete splXZ; | |
415 | splXZ=0x0; | |
416 | ||
417 | grXY=(TGraph*)arrGraphsXY.At(sec); | |
418 | grXZ=(TGraph*)arrGraphsXZ.At(sec); | |
419 | if (!grXY) continue; | |
b0c26b55 | 420 | |
05da1b4e | 421 | // if(grXY->GetN()>1 && grXZ->GetN()>1) { //causes segmentation violation if N==1 |
422 | // splXY=new TSpline3("splXY",grXY); | |
423 | // splXZ=new TSpline3("splXZ",grXZ); | |
424 | // } | |
425 | // else { | |
544076ea | 426 | //TODO: make a cluster also in the sector w only one space point? |
05da1b4e | 427 | // continue; |
544076ea | 428 | // Double_t tempX=0., tempY = 0., tempZ = 0.; |
429 | ||
430 | // grXY->GetPoint(0,tempX,localY); | |
431 | // grXZ->GetPoint(0,tempX,localZ); | |
05da1b4e | 432 | // } |
544076ea | 433 | |
32438f4e | 434 | } |
435 | secOld=sec; | |
b0c26b55 | 436 | |
32438f4e | 437 | // check we are in an active area |
05da1b4e | 438 | // if (splXY->FindX(localX)<1 || splXZ->FindX(localX)<1) continue; |
439 | if ( localX<grXY->GetX()[0] || localX>grXY->GetX()[grXY->GetN()-1] || localX<grXZ->GetX()[0] || localX>grXZ->GetX()[grXZ->GetN()-1]) continue; | |
b0c26b55 | 440 | |
32438f4e | 441 | //get interpolated value at the center for the pad row |
442 | // using splines | |
05da1b4e | 443 | // const Double_t localY=splXY->Eval(localX/*,0x0,"S"*/); |
444 | // const Double_t localZ=splXZ->Eval(localX/*,0x0,"S"*/); | |
445 | const Double_t localY=grXY->Eval(localX/*,0x0,"S"*/); | |
446 | const Double_t localZ=grXZ->Eval(localX/*,0x0,"S"*/); | |
32438f4e | 447 | Float_t xyz[3]={localX,localY,localZ}; |
526ddf0e | 448 | |
32438f4e | 449 | if (!SetupCluster(tempCl,xyz,sec,t0)) continue; |
d1cf83f5 | 450 | tempCl.SetLabel(tr.GetUniqueID(), 0); |
0403120d | 451 | |
32438f4e | 452 | if (type==0) tr.AddSpacePoint(tempCl); |
453 | else tr.AddDistortedSpacePoint(tempCl); | |
454 | // printf("SetupCluster %3d: (%.2f, %.2f, %.2f), %d, %.2f\n",irow,xyz[0],xyz[1],xyz[2],sec,t0); | |
455 | } | |
526ddf0e | 456 | |
32438f4e | 457 | delete splXY; |
458 | splXY=0x0; | |
459 | delete splXZ; | |
460 | splXZ=0x0; | |
461 | ||
462 | } | |
526ddf0e | 463 | |
32438f4e | 464 | //________________________________________________________________ |
465 | Bool_t AliToyMCEventGenerator::SetupCluster(AliTPCclusterMI &tempCl, Float_t xyz[3], Int_t sec, Double_t t0) | |
466 | { | |
467 | // | |
468 | // | |
469 | // | |
526ddf0e | 470 | |
e83fd282 | 471 | // intrinsic cluster resolution is 1mm |
32438f4e | 472 | const Double_t kSigmaY = 0.1; |
473 | const Double_t kSigmaZ = 0.1; | |
474 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
475 | //TODO: Get this from the OCDB at some point? | |
476 | const Double_t kDriftVel = fTPCParam->GetDriftV(); | |
e83fd282 | 477 | |
478 | // smear the ideal positions with the cluster resolution | |
479 | xyz[1]+=gRandom->Gaus(0,kSigmaY); | |
480 | xyz[2]+=gRandom->Gaus(0,kSigmaZ); | |
526ddf0e | 481 | |
32438f4e | 482 | tempCl.SetX(xyz[0]); |
483 | tempCl.SetY(xyz[1]); | |
484 | tempCl.SetZ(xyz[2]); | |
526ddf0e | 485 | |
32438f4e | 486 | tempCl.SetSigmaY2(kSigmaY*kSigmaY); |
487 | tempCl.SetSigmaZ2(kSigmaZ*kSigmaZ); | |
488 | ||
489 | // transform from the local coordinates to the coordinates expressed in pad coordinates | |
490 | Int_t index[3] = {0,sec,0}; | |
491 | fTPCParam->Transform2to3(xyz,index); | |
492 | fTPCParam->Transform3to4(xyz,index); | |
493 | fTPCParam->Transform4to8(xyz,index); | |
494 | ||
495 | const Int_t row = index[2]; | |
496 | const Int_t nPads = fTPCParam->GetNPads(sec, row); | |
497 | // pad is fractional, but it needs to be shifted from the center | |
498 | // to the edge of the row | |
499 | const Float_t pad = xyz[1] + nPads/2; | |
500 | ||
501 | tempCl.SetRow(row); | |
502 | tempCl.SetPad(pad); | |
503 | Float_t timeBin=Float_t(t0 + (kMaxZ0-TMath::Abs(tempCl.GetZ()))/kDriftVel); | |
504 | tempCl.SetTimeBin(timeBin); // set time as t0 + drift time from dist z | |
505 | tempCl.SetDetector(sec); | |
506 | ||
507 | //check if we are in the active area | |
508 | if (pad<0 || pad>=nPads) return kFALSE; | |
509 | ||
510 | return kTRUE; | |
526ddf0e | 511 | } |
32438f4e | 512 | |
a1a695e5 | 513 | //________________________________________________________________ |
514 | Bool_t AliToyMCEventGenerator::ConnectOutputFile() | |
515 | { | |
516 | // | |
517 | // Create the output file name and tree and connect the event | |
518 | // | |
519 | ||
520 | fOutFile = new TFile(fOutputFileName.Data(),"recreate"); | |
521 | ||
522 | if (!fOutFile || !fOutFile->IsOpen()){ | |
523 | delete fOutFile; | |
524 | fOutFile=0x0; | |
525 | return kFALSE; | |
526 | } | |
527 | ||
528 | fOutTree = new TTree("toyMCtree","Tree with toyMC simulation"); | |
529 | fOutTree->Branch("event","AliToyMCEvent",&fEvent); | |
530 | ||
0403120d | 531 | gROOT->cd(); |
532 | ||
a1a695e5 | 533 | return kTRUE; |
534 | } | |
535 | ||
536 | //________________________________________________________________ | |
537 | Bool_t AliToyMCEventGenerator::CloseOutputFile() | |
538 | { | |
539 | // | |
540 | // close the output file | |
541 | // | |
542 | if (!fOutFile) return kFALSE; | |
543 | fOutFile->Write(); | |
544 | fOutFile->Close(); | |
545 | delete fOutFile; | |
546 | fOutFile=0x0; | |
547 | ||
548 | return kTRUE; | |
549 | } | |
550 | ||
551 | //________________________________________________________________ | |
552 | void AliToyMCEventGenerator::FillTree() | |
553 | { | |
554 | // fill the tree | |
0403120d | 555 | if (fOutTree&&fEvent) fOutTree->Fill(); |
a1a695e5 | 556 | } |
557 | ||
cd8ed0ac | 558 | //________________________________________________________________ |
223d9e38 | 559 | void AliToyMCEventGenerator::SetSpaceCharge(EEpsilon epsilon, EGasType gasType/*=kNeCO2_9010*/, |
560 | ECollRate collRate/*=k50kHz*/, ECorrection corrType/*=kLookup*/) | |
cd8ed0ac | 561 | { |
562 | // | |
563 | // Set the space charge conditions | |
564 | // | |
223d9e38 | 565 | fCorrectionFile="$ALICE_ROOT/TPC/Calib/maps/SC"; |
cd8ed0ac | 566 | switch (gasType) { |
567 | case kNeCO2_9010: | |
223d9e38 | 568 | fCorrectionFile.Append("_NeCO2"); |
cd8ed0ac | 569 | break; |
d5715c32 | 570 | case kNeCO2N2_90105: |
571 | fCorrectionFile.Append("_NeCO2N2"); | |
572 | break; | |
cd8ed0ac | 573 | } |
574 | switch (epsilon) { | |
575 | case kEps5: | |
223d9e38 | 576 | fCorrectionFile.Append("_eps5"); |
cd8ed0ac | 577 | break; |
578 | case kEps10: | |
223d9e38 | 579 | fCorrectionFile.Append("_eps10"); |
cd8ed0ac | 580 | break; |
581 | case kEps20: | |
223d9e38 | 582 | fCorrectionFile.Append("_eps20"); |
cd8ed0ac | 583 | break; |
d5715c32 | 584 | case kEps25: |
585 | fCorrectionFile.Append("_eps25"); | |
586 | break; | |
587 | case kEps30: | |
588 | fCorrectionFile.Append("_eps30"); | |
589 | break; | |
590 | case kEps35: | |
591 | fCorrectionFile.Append("_eps35"); | |
592 | break; | |
593 | case kEps40: | |
594 | fCorrectionFile.Append("_eps40"); | |
595 | break; | |
cd8ed0ac | 596 | } |
597 | switch (collRate) { | |
598 | case k50kHz: | |
223d9e38 | 599 | fCorrectionFile.Append("_50kHz"); |
600 | break; | |
601 | } | |
602 | switch (corrType) { | |
603 | case kLookup: | |
604 | fCorrectionFile.Append("_precal.lookup.root"); | |
605 | break; | |
606 | case kSpaceChargeFile: | |
607 | fCorrectionFile.Append("_precal.root"); | |
cd8ed0ac | 608 | break; |
609 | } | |
cd8ed0ac | 610 | } |
611 | ||
612 | //________________________________________________________________ | |
613 | void AliToyMCEventGenerator::InitSpaceCharge() | |
614 | { | |
615 | // | |
616 | // init the space charge conditions | |
617 | // this should be called after the tree was connected | |
618 | // | |
619 | ||
2dd02504 | 620 | if (HasSCList()) { |
621 | InitSpaceChargeList(); | |
622 | return; | |
623 | } | |
624 | ||
223d9e38 | 625 | AliInfo(Form("Using space charge map file: '%s'",fCorrectionFile.Data())); |
626 | ||
862220e2 | 627 | SetCorrectionFromFile(fCorrectionFile, fTPCCorrection); |
cd8ed0ac | 628 | |
629 | if (fOutTree){ | |
630 | AliInfo("Attaching space charge map file name to the tree"); | |
223d9e38 | 631 | fOutTree->GetUserInfo()->Add(new TObjString(fCorrectionFile.Data())); |
cd8ed0ac | 632 | } |
633 | } | |
2dd02504 | 634 | |
635 | //________________________________________________________________ | |
636 | void AliToyMCEventGenerator::InitSpaceChargeList() | |
637 | { | |
638 | // | |
639 | // init space charge conditions from a list of files | |
640 | // this should be called after the tree was connected | |
641 | // | |
642 | ||
643 | std::ifstream file(fSCListFile.Data()); | |
644 | TString list; | |
645 | list.ReadFile(file); | |
646 | ||
647 | TObjArray *arr=list.Tokenize("\n"); | |
648 | if (!arr->GetEntriesFast()) { | |
649 | delete arr; | |
650 | AliFatal(Form("No SC file initialised. SC list '%s' seems empty",fSCListFile.Data())); | |
651 | return; | |
652 | } | |
653 | ||
654 | // it is assumed that in case of an input list | |
655 | // fCorrectionFile contains the name of the average correction | |
656 | // to be then used in the reconstruction | |
657 | if (fOutTree){ | |
658 | if (fCorrectionFile.IsNull()) { | |
659 | AliFatal("List of SC files set, but no average map is specified. Use 'SetSpaceChargeFile' to do so"); | |
660 | return; | |
661 | } | |
662 | AliInfo("Attaching average space charge map file name to the tree"); | |
663 | fOutTree->GetUserInfo()->Add(new TObjString(fCorrectionFile.Data())); | |
664 | } | |
665 | ||
862220e2 | 666 | // check for an average map |
667 | if (!fCorrectionFile.IsNull()) { | |
668 | SetCorrectionFromFile(fCorrectionFile, fTPCCorrectionAv); | |
669 | } | |
2dd02504 | 670 | |
671 | // case of non preread | |
672 | // store the names of the files | |
673 | if (!fPrereadSCList) { | |
674 | if (fSCList) delete fSCList; | |
675 | fSCList=arr; | |
676 | return; | |
677 | } | |
678 | ||
679 | // case of preread | |
680 | // load all SC files and set them to the list | |
681 | if (!fSCList) fSCList=new TObjArray; | |
682 | fSCList->SetOwner(); | |
683 | fSCList->Delete(); | |
684 | ||
685 | for (Int_t ifile=0; ifile<arr->GetEntriesFast(); ++ifile) { | |
862220e2 | 686 | TString scname=arr->At(ifile)->GetName(); |
687 | AliTPCCorrection *sc=0x0; | |
688 | SetCorrectionFromFile(scname, sc); | |
2dd02504 | 689 | if (!sc) continue; |
2dd02504 | 690 | fSCList->Add(sc); |
691 | } | |
692 | } | |
693 | ||
694 | //________________________________________________________________ | |
695 | void AliToyMCEventGenerator::IterateSC(Int_t ipos) | |
696 | { | |
697 | // | |
698 | // In case a list of SC files is set iterate over them | |
699 | // | |
700 | ||
701 | if (!HasSCList()) return; | |
702 | ||
703 | if (ipos<0) { | |
704 | if (fOutTree) ipos=fOutTree->GetEntries(); | |
705 | else ipos=0; | |
706 | } | |
707 | ||
708 | TObject *sc=fSCList->At(ipos%fSCList->GetEntriesFast()); | |
709 | AliInfo(Form("Event: %d - SC: %s",ipos,sc->GetName())); | |
710 | // case SC files have been preread | |
711 | if (fPrereadSCList) { | |
712 | fTPCCorrection=(AliTPCCorrection*)sc; | |
713 | return; | |
714 | } | |
715 | ||
716 | // case no preread was done | |
717 | TString &file=((TObjString*)sc)->String(); | |
718 | delete fTPCCorrection; | |
719 | fTPCCorrection=0x0; | |
720 | ||
862220e2 | 721 | SetCorrectionFromFile(file, fTPCCorrection); |
722 | ||
723 | if (!fTPCCorrection) { | |
724 | AliFatal(Form("Could not read SC map from SC file '%s'",file.Data())); | |
2dd02504 | 725 | return; |
726 | } | |
727 | ||
862220e2 | 728 | SetSCScalingFactor(); |
729 | } | |
730 | ||
731 | //________________________________________________________________ | |
732 | Float_t AliToyMCEventGenerator::GetSCScalingFactor(AliTPCCorrection *corr, AliTPCCorrection *averageCorr, Float_t &chi2) | |
733 | { | |
734 | // | |
735 | // calculate the scaling factor | |
736 | // between the fluctuation map and the average map | |
737 | // | |
738 | ||
739 | TLinearFitter fitter(2,"pol1"); | |
740 | ||
741 | for (Float_t iz=-245; iz<=245; iz+=10) { | |
742 | Short_t roc=(iz>=0)?0:18; | |
743 | for (Float_t ir=86; ir<250; ir+=10) { | |
744 | for (Float_t iphi=0; iphi<TMath::TwoPi(); iphi+=10*TMath::DegToRad()){ | |
745 | Float_t x=ir*(Float_t)TMath::Cos(iphi); | |
746 | Float_t y=ir*(Float_t)TMath::Sin(iphi); | |
747 | Float_t x3[3] = {x,y,iz}; | |
748 | Float_t dx3[3] = {0.,0.,0.}; | |
749 | Float_t dx3av[3] = {0.,0.,0.}; | |
750 | ||
751 | corr->GetDistortion(x3,roc,dx3); | |
752 | averageCorr->GetDistortion(x3,roc,dx3av); | |
753 | ||
754 | Double_t dr = TMath::Sqrt(dx3[0]*dx3[0] + dx3[1]*dx3[1]); | |
755 | Double_t drav = TMath::Sqrt(dx3av[0]*dx3av[0] + dx3av[1]*dx3av[1]); | |
756 | ||
757 | fitter.AddPoint(&drav,dr); | |
758 | } | |
759 | } | |
760 | } | |
761 | ||
762 | fitter.Eval(); | |
763 | chi2 = fitter.GetChisquare()/fitter.GetNpoints(); | |
764 | return fitter.GetParameter(1); | |
765 | } | |
766 | ||
767 | //________________________________________________________________ | |
768 | void AliToyMCEventGenerator::SetSCScalingFactor() | |
769 | { | |
770 | // | |
771 | // if running with a SC list calculate the scaling factor | |
772 | // between the fluctuation map and the average map | |
773 | // | |
774 | ||
775 | if ( !(fTPCCorrection && fTPCCorrectionAv && fEvent) ) return; | |
776 | ||
777 | // loop over several z, r and phi bins and find a factor that minimises | |
778 | // the distortions between the current map and the average map | |
779 | ||
780 | Float_t chi2 = 0.; | |
781 | Float_t factor = GetSCScalingFactor(fTPCCorrection, fTPCCorrectionAv, chi2); | |
782 | ||
783 | fEvent->SetSCscale(factor); | |
784 | fEvent->SetSCscaleChi2(chi2); | |
785 | } | |
786 | ||
787 | //________________________________________________________________ | |
e2cfbac8 | 788 | void AliToyMCEventGenerator::SetCorrectionFromFile(TString file, AliTPCCorrection* &corr) |
862220e2 | 789 | { |
790 | // | |
791 | // read the correction from file and set it to corr | |
792 | // | |
793 | ||
794 | corr=0x0; | |
795 | TString corrName("map"); | |
796 | ||
797 | // allow for specifying an object name for the AliTPCCorrection in the file name | |
798 | // separated by a ':' | |
e2cfbac8 | 799 | TObjArray *arr=file.Tokenize(":"); |
862220e2 | 800 | if (arr->GetEntriesFast()>1) { |
e2cfbac8 | 801 | file=arr->At(0)->GetName(); |
862220e2 | 802 | corrName=arr->At(1)->GetName(); |
803 | } | |
804 | delete arr; | |
805 | ||
806 | ||
807 | TFile f(file.Data()); | |
808 | if (!f.IsOpen()||f.IsZombie()) { | |
e2cfbac8 | 809 | printf("E-AliToyMCEventGenerator::Could not open SC file '%s'",file.Data()); |
2dd02504 | 810 | return; |
811 | } | |
812 | ||
862220e2 | 813 | corr=(AliTPCSpaceCharge3D*)f.Get(corrName.Data()); |
814 | if (corr) corr->SetName(f.GetName()); | |
2dd02504 | 815 | } |
862220e2 | 816 | |
817 |