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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) |
5414766f | 53 | ,fCalculateScaling(kTRUE) |
526ddf0e | 54 | { |
526ddf0e | 55 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); |
56 | fTPCParam->ReadGeoMatrices(); | |
223d9e38 | 57 | gRandom->SetSeed(); |
526ddf0e | 58 | } |
59 | //________________________________________________________________ | |
de0014b7 | 60 | AliToyMCEventGenerator::AliToyMCEventGenerator(const AliToyMCEventGenerator &gen) |
526ddf0e | 61 | :TObject(gen) |
a1a695e5 | 62 | ,fTPCParam(gen.fTPCParam) |
63 | ,fEvent(0x0) | |
223d9e38 | 64 | ,fCurrentTrack(0) |
65 | ,fTPCCorrection(gen.fTPCCorrection) | |
862220e2 | 66 | ,fTPCCorrectionAv(0x0) |
2dd02504 | 67 | ,fSCList(gen.fSCList) |
68 | ,fSCListFile(gen.fSCListFile) | |
223d9e38 | 69 | ,fCorrectionFile(gen.fCorrectionFile) |
a1a695e5 | 70 | ,fOutputFileName(gen.fOutputFileName) |
71 | ,fOutFile(0x0) | |
72 | ,fOutTree(0x0) | |
d92b8630 | 73 | ,fUseStepCorrection(gen.fUseStepCorrection) |
d1cf83f5 | 74 | ,fUseMaterialBudget(gen.fUseMaterialBudget) |
0403120d | 75 | ,fIsLaser(gen.fIsLaser) |
2dd02504 | 76 | ,fPrereadSCList(gen.fPrereadSCList) |
5414766f | 77 | ,fCalculateScaling(gen.fCalculateScaling) |
526ddf0e | 78 | { |
79 | // | |
223d9e38 | 80 | gRandom->SetSeed(); |
526ddf0e | 81 | } |
82 | //________________________________________________________________ | |
de0014b7 | 83 | AliToyMCEventGenerator::~AliToyMCEventGenerator() |
526ddf0e | 84 | { |
2dd02504 | 85 | if (HasSCList() &&!fPrereadSCList) delete fTPCCorrection; |
86 | delete fSCList; | |
526ddf0e | 87 | } |
32438f4e | 88 | |
526ddf0e | 89 | //________________________________________________________________ |
a1a695e5 | 90 | Bool_t AliToyMCEventGenerator::DistortTrack(AliToyMCTrack &trackIn, Double_t t0) |
91 | { | |
92 | // | |
93 | // | |
94 | // | |
95 | ||
526ddf0e | 96 | if(!fTPCParam) { |
97 | fTPCParam = AliTPCcalibDB::Instance()->GetParameters(); | |
98 | fTPCParam->ReadGeoMatrices(); | |
526ddf0e | 99 | } |
32438f4e | 100 | |
1e62e876 | 101 | MakeITSClusters(trackIn/*,t0*/); |
102 | MakeTPCClusters(trackIn, t0); | |
103 | MakeTRDClusters(trackIn/*,t0*/); | |
104 | ||
0403120d | 105 | return kTRUE; |
1e62e876 | 106 | } |
107 | //________________________________________________________________ | |
108 | void AliToyMCEventGenerator::MakeITSClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
109 | { | |
110 | //Upgrade ITS parameters | |
111 | const Int_t nITSLayers = 7; | |
112 | const Double_t ITSRadii[nITSLayers] = {2.2, 2.8, 3.6, 20.0, 22.0, 41.0, 43.0}; | |
113 | const Double_t lengthITS[nITSLayers] = {22.4, 24.2, 26.8, 78.0, 83.6, 142.4, 148.6}; | |
114 | ||
e83fd282 | 115 | //resolution of the point is 10um |
116 | const Float_t sigmaY = 0.001; | |
117 | const Float_t sigmaZ = 0.001; | |
118 | ||
119 | AliTrackPoint point; | |
120 | ||
1e62e876 | 121 | const Double_t kMaxSnp = 0.85; |
e83fd282 | 122 | // const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
1e62e876 | 123 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); |
124 | ||
0403120d | 125 | AliExternalTrackParam track(trackIn); |
1e62e876 | 126 | Double_t xyz[3] = {0.,0.,0.}; |
127 | ||
128 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
129 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[0])); | |
130 | return; | |
131 | } | |
132 | ||
133 | for(Int_t iLayer = 0; iLayer<nITSLayers; iLayer++){ | |
134 | ||
135 | if (!AliTrackerBase::PropagateTrackTo(&track,ITSRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
136 | AliError(Form("Propagation to %.2f failed\n",ITSRadii[iLayer])); | |
137 | continue; | |
138 | } | |
e83fd282 | 139 | // since I don't know how to extract the volumeid of the ITS layers I use the following strategy: |
140 | // - rotate the track to the next integer angle | |
141 | // - use coordinates there and set as volumeid the integer angle | |
142 | // - in the reco one can then rotate the cluster to the global frame using the angle stored in the volume id | |
1e62e876 | 143 | track.GetXYZ(xyz); |
144 | ||
e83fd282 | 145 | // if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
1e62e876 | 146 | if (TMath::Abs(track.GetZ())>lengthITS[iLayer]/2) continue; |
e83fd282 | 147 | |
148 | ||
149 | // smear the ideal positions with the cluster resolution | |
150 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
151 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
152 | ||
153 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
154 | ||
155 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
1e62e876 | 156 | |
e83fd282 | 157 | trackIn.AddITSPoint(point)->SetUniqueID(trackIn.GetUniqueID()); |
1e62e876 | 158 | } |
159 | ||
160 | } | |
161 | //________________________________________________________________ | |
162 | void AliToyMCEventGenerator::MakeTRDClusters(AliToyMCTrack &trackIn/*, Double_t t0*/) | |
163 | ||
164 | { | |
165 | //Uses current TRD parameters | |
166 | const Int_t nTRDLayers = 6; | |
167 | const Double_t distToMid = 3.2 + 30./2; //dist to middle of drift region (radiator + half drift region) | |
168 | const Double_t TRDRadii[nTRDLayers] = {294.5 + distToMid, 307.1 + distToMid, 319.7 + distToMid, 332.3 + distToMid, 344.9 + distToMid, 357.5 + distToMid}; | |
169 | const Double_t lengthTRD[nTRDLayers] = {604.0, 634.0, 656.0, 686.0, 700.0, 700.0}; | |
170 | ||
e83fd282 | 171 | const Float_t sigmaY = 0.06; |
172 | const Float_t sigmaZ = 0.2; | |
1e62e876 | 173 | |
e83fd282 | 174 | AliTrackPoint point; |
175 | ||
1e62e876 | 176 | const Double_t kMaxSnp = 0.85; |
177 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
178 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
179 | ||
0403120d | 180 | AliExternalTrackParam track(trackIn); |
1e62e876 | 181 | Double_t xyz[3] = {0.,0.,0.}; |
182 | ||
183 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[0],kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
184 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[0])); | |
185 | return; | |
186 | } | |
187 | ||
188 | for(Int_t iLayer = 0; iLayer<nTRDLayers; iLayer++){ | |
189 | ||
190 | if (!AliTrackerBase::PropagateTrackTo(&track,TRDRadii[iLayer],kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { | |
191 | AliError(Form("Propagation to %.2f failed\n",TRDRadii[iLayer])); | |
192 | continue; | |
193 | } | |
194 | track.GetXYZ(xyz); | |
195 | ||
196 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; | |
197 | if (TMath::Abs(track.GetZ())>lengthTRD[iLayer]/2) continue; | |
198 | ||
e83fd282 | 199 | |
200 | // smear the ideal positions with the cluster resolution | |
201 | xyz[1]+=gRandom->Gaus(0,sigmaY); | |
202 | xyz[2]+=gRandom->Gaus(0,sigmaZ); | |
203 | ||
204 | Float_t xyzf[3]={xyz[0],xyz[1],xyz[2]}; | |
205 | ||
206 | SetPoint(xyzf,sigmaY,sigmaZ,point); | |
207 | ||
208 | trackIn.AddTRDPoint(point)->SetUniqueID(trackIn.GetUniqueID()); | |
1e62e876 | 209 | } |
210 | ||
211 | } | |
212 | //________________________________________________________________ | |
213 | void AliToyMCEventGenerator::MakeTPCClusters(AliToyMCTrack &trackIn, Double_t t0) | |
214 | { | |
215 | ||
32438f4e | 216 | // make it big enough to hold all points |
217 | // store real number of generated points in the unique id | |
218 | const Int_t nMaxPoints=3000; | |
0403120d | 219 | static AliTrackPointArray pointArray0(nMaxPoints); //undistorted |
220 | static AliTrackPointArray pointArray1(nMaxPoints); //distorted | |
1e62e876 | 221 | |
32438f4e | 222 | //Create space point of undistorted and distorted clusters along the propagated track trajectory |
223 | CreateSpacePoints(trackIn,pointArray0,pointArray1); | |
224 | //Convert the space points into clusters in the local frame | |
225 | //for undistorted and distorted clusters using the same function | |
226 | ConvertTrackPointsToLocalClusters(pointArray0,trackIn,t0,0); | |
227 | ConvertTrackPointsToLocalClusters(pointArray1,trackIn,t0,1); | |
526ddf0e | 228 | |
526ddf0e | 229 | |
1e62e876 | 230 | } |
32438f4e | 231 | //________________________________________________________________ |
232 | void AliToyMCEventGenerator::CreateSpacePoints(AliToyMCTrack &trackIn, | |
233 | AliTrackPointArray &arrUdist, | |
234 | AliTrackPointArray &arrDist) | |
235 | { | |
236 | // | |
237 | // sample the track from the inner to the outer wall of the TPC | |
238 | // a graph is filled in local coordinates for later | |
239 | // | |
240 | ||
0403120d | 241 | Double_t kMaxSnp = 0.85; |
242 | if (fIsLaser) kMaxSnp=0.99; | |
32438f4e | 243 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); |
244 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
245 | ||
246 | const Double_t iFCRadius = 83.5; //radius constants found in AliTPCCorrection.cxx | |
247 | const Double_t oFCRadius = 254.5; | |
e83fd282 | 248 | |
249 | const Float_t kSigmaY=0.1; | |
250 | const Float_t kSigmaZ=0.1; | |
32438f4e | 251 | |
0403120d | 252 | AliExternalTrackParam track(trackIn); |
32438f4e | 253 | //!!! TODO: make this adjustable perhaps |
254 | const Double_t stepSize=0.1; | |
255 | Double_t xyz[3] = {0.,0.,0.}; | |
256 | Float_t xyzf[3] = {0.,0.,0.}; | |
257 | ||
a1a695e5 | 258 | //!!! when does the propagation not work, how often does it happen? |
0403120d | 259 | if (!AliTrackerBase::PropagateTrackTo(&track,iFCRadius,kMass,5,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget) && !fIsLaser) { |
b0c26b55 | 260 | AliError(Form("Propagation to IFC: %.2f failed\n",iFCRadius)); |
32438f4e | 261 | return; |
b0c26b55 | 262 | } |
32438f4e | 263 | |
526ddf0e | 264 | Int_t npoints=0; |
b0c26b55 | 265 | |
32438f4e | 266 | for (Double_t radius=iFCRadius; radius<oFCRadius; radius+=stepSize){ |
b0c26b55 | 267 | //!!! changed from return 0 to continue -> Please check |
d1cf83f5 | 268 | if (!AliTrackerBase::PropagateTrackTo(&track,radius,kMass,1,kTRUE,kMaxSnp,0,kFALSE,fUseMaterialBudget)) { |
0403120d | 269 | AliError(Form("Propagation to r=%.2f (snp=%.2f) failed\n",radius,track.GetSnp())); |
b0c26b55 | 270 | continue; |
271 | } | |
526ddf0e | 272 | track.GetXYZ(xyz); |
32438f4e | 273 | |
b0c26b55 | 274 | //!!! Why is this smeared |
32438f4e | 275 | |
276 | xyzf[0]=Float_t(xyz[0]); | |
277 | xyzf[1]=Float_t(xyz[1]); | |
278 | xyzf[2]=Float_t(xyz[2]); | |
279 | ||
526ddf0e | 280 | if (TMath::Abs(track.GetZ())>kMaxZ0) continue; |
32438f4e | 281 | // if (TMath::Abs(track.GetX())<iFCRadius) continue; |
282 | // if (TMath::Abs(track.GetX())>oFCRadius) continue; | |
283 | ||
284 | ||
285 | AliTrackPoint pUdist; // undistorted space point | |
286 | AliTrackPoint pDist; // distorted space point | |
287 | // Set undistorted point | |
e83fd282 | 288 | SetPoint(xyzf,kSigmaY,kSigmaZ,pUdist); |
32438f4e | 289 | arrUdist.AddPoint(npoints, &pUdist); |
290 | Int_t sector=pUdist.GetVolumeID(); | |
32438f4e | 291 | |
292 | // set distorted point | |
526ddf0e | 293 | Float_t distPoint[3]={xyz[0],xyz[1],xyz[2]}; |
d92b8630 | 294 | Float_t dxyz[3]={0.,0.,0.}; |
295 | if (!fUseStepCorrection){ | |
223d9e38 | 296 | fTPCCorrection->DistortPoint(distPoint, sector); |
d92b8630 | 297 | } else { |
223d9e38 | 298 | fTPCCorrection->GetCorrectionIntegralDz(distPoint,sector,dxyz,5); |
d92b8630 | 299 | distPoint[0]-=dxyz[0]; |
300 | distPoint[1]-=dxyz[1]; | |
301 | distPoint[2]-=dxyz[2]; | |
302 | } | |
e83fd282 | 303 | SetPoint(distPoint,kSigmaY,kSigmaZ,pDist); |
32438f4e | 304 | arrDist.AddPoint(npoints, &pDist); |
32438f4e | 305 | |
306 | ++npoints; | |
526ddf0e | 307 | } |
32438f4e | 308 | |
309 | arrUdist.SetUniqueID(npoints); | |
310 | arrDist.SetUniqueID(npoints); | |
311 | } | |
526ddf0e | 312 | |
32438f4e | 313 | //________________________________________________________________ |
e83fd282 | 314 | void AliToyMCEventGenerator::SetPoint(Float_t xyz[3], Float_t sigmaY, Float_t sigmaZ, AliTrackPoint &point) |
32438f4e | 315 | { |
316 | // | |
317 | // make AliTrackPoint out of AliTPCclusterMI | |
318 | // | |
319 | ||
320 | //covariance at the local frame | |
321 | //assume 1mm distortion in y and z | |
322 | Int_t i[3]={0,0,0}; | |
e83fd282 | 323 | Float_t cov[6]={0,0,0, sigmaY*sigmaY,0,sigmaZ*sigmaZ}; |
32438f4e | 324 | |
325 | const Float_t alpha = -TMath::ATan2(xyz[1],xyz[0]); | |
326 | const Float_t sin = TMath::Sin(alpha), cos = TMath::Cos(alpha); | |
327 | ||
328 | Float_t newcov[6]; | |
329 | newcov[0] = cov[0]*cos*cos + 2*cov[1]*sin*cos + cov[3]*sin*sin; | |
330 | newcov[1] = cov[1]*(cos*cos-sin*sin) + (cov[3]-cov[0])*sin*cos; | |
331 | newcov[2] = cov[2]*cos + cov[4]*sin; | |
332 | newcov[3] = cov[0]*sin*sin - 2*cov[1]*sin*cos + cov[3]*cos*cos; | |
333 | newcov[4] = cov[4]*cos - cov[2]*sin; | |
334 | newcov[5] = cov[5]; | |
335 | ||
336 | // voluem ID to add later .... | |
337 | point.SetXYZ(xyz); | |
338 | point.SetCov(newcov); | |
d92b8630 | 339 | // abuse volume ID for the sector number |
32438f4e | 340 | point.SetVolumeID(fTPCParam->Transform0to1(xyz,i)); |
b0c26b55 | 341 | |
32438f4e | 342 | // TODO: Add sampled dE/dx (use SetCharge) |
343 | } | |
b0c26b55 | 344 | |
32438f4e | 345 | //________________________________________________________________ |
346 | void AliToyMCEventGenerator::ConvertTrackPointsToLocalClusters(AliTrackPointArray &arrPoints, | |
347 | AliToyMCTrack &tr, Double_t t0, Int_t type) | |
348 | { | |
349 | // | |
350 | // | |
351 | // | |
526ddf0e | 352 | |
32438f4e | 353 | const Int_t npoints=Int_t(arrPoints.GetUniqueID()); |
354 | Int_t secOld=-1; | |
355 | ||
356 | // create an array for graphs which are used for local interpolation | |
357 | // we need a new graph if the sector changed since then the local frame will also change | |
358 | TObjArray arrGraphsXY(72); | |
359 | arrGraphsXY.SetOwner(); | |
360 | TObjArray arrGraphsXZ(72); | |
361 | arrGraphsXZ.SetOwner(); | |
362 | AliTrackPoint p; | |
363 | //create initial graph | |
364 | TGraph *grXY=0x0; | |
365 | TGraph *grXZ=0x0; | |
366 | //row -> sector mapping | |
367 | Int_t rowMap[159]; | |
368 | for (Int_t irow=0; irow<159; ++irow) rowMap[irow]=-1; | |
369 | ||
370 | // 1. Step | |
371 | // Make from the list of global space points graphs in the local frame | |
372 | // one graph per sector is needed | |
373 | for (Int_t ipoint=0; ipoint<npoints; ++ipoint){ | |
374 | arrPoints.GetPoint(p,ipoint); | |
375 | Float_t xyz[3] = {p.GetX(),p.GetY(),p.GetZ()}; | |
376 | Int_t index[3] = {0,0,0}; | |
377 | Int_t row = fTPCParam->GetPadRow(xyz,index); | |
378 | // rotate space point to local frame | |
379 | // the angle is given by the VolumeID which was set in CrateSpacePoints | |
380 | const Int_t sec=p.GetVolumeID(); | |
381 | if (row<0 || (sec<36 && row>62) || row>95 ) continue; | |
382 | Double_t angle=((sec%18)*20.+10.)/TMath::RadToDeg(); | |
383 | AliTrackPoint pRot=p.Rotate(angle); | |
384 | const Int_t secrow=row+(sec>35)*63; | |
385 | if (rowMap[secrow]==-1) rowMap[secrow]=sec; | |
386 | // check if we need a new graph (sector change) | |
387 | if (secOld!=sec){ | |
388 | grXY=new TGraph; | |
389 | grXZ=new TGraph; | |
390 | arrGraphsXY.AddAt(grXY,sec); | |
391 | arrGraphsXZ.AddAt(grXZ,sec); | |
392 | } | |
b0c26b55 | 393 | |
32438f4e | 394 | //add coordinates in local frame for later interpolation |
395 | grXY->SetPoint(grXY->GetN(), pRot.GetX(), pRot.GetY()); | |
396 | grXZ->SetPoint(grXZ->GetN(), pRot.GetX(), pRot.GetZ()); | |
397 | secOld=sec; | |
398 | } | |
b0c26b55 | 399 | |
32438f4e | 400 | // 2. Step |
401 | // create in the center of each row a space point by using the graph to interpolate | |
402 | // the the center of the row. This is done in xy and xz | |
403 | TSpline3 *splXY=0x0; | |
404 | TSpline3 *splXZ=0x0; | |
405 | AliTPCclusterMI tempCl; | |
406 | secOld=-1; | |
407 | for (Int_t irow=0; irow<159; ++irow ){ | |
408 | const Int_t sec = rowMap[irow]; | |
409 | if (sec==-1) continue; | |
410 | const Int_t secrow = irow<63?irow:irow-63; | |
411 | Double_t localX = fTPCParam->GetPadRowRadii(sec,secrow); | |
412 | // get graph for the current row | |
413 | if (sec!=secOld){ | |
414 | delete splXY; | |
415 | splXY=0x0; | |
416 | delete splXZ; | |
417 | splXZ=0x0; | |
418 | ||
419 | grXY=(TGraph*)arrGraphsXY.At(sec); | |
420 | grXZ=(TGraph*)arrGraphsXZ.At(sec); | |
421 | if (!grXY) continue; | |
b0c26b55 | 422 | |
05da1b4e | 423 | // if(grXY->GetN()>1 && grXZ->GetN()>1) { //causes segmentation violation if N==1 |
424 | // splXY=new TSpline3("splXY",grXY); | |
425 | // splXZ=new TSpline3("splXZ",grXZ); | |
426 | // } | |
427 | // else { | |
544076ea | 428 | //TODO: make a cluster also in the sector w only one space point? |
05da1b4e | 429 | // continue; |
544076ea | 430 | // Double_t tempX=0., tempY = 0., tempZ = 0.; |
431 | ||
432 | // grXY->GetPoint(0,tempX,localY); | |
433 | // grXZ->GetPoint(0,tempX,localZ); | |
05da1b4e | 434 | // } |
544076ea | 435 | |
32438f4e | 436 | } |
437 | secOld=sec; | |
b0c26b55 | 438 | |
32438f4e | 439 | // check we are in an active area |
05da1b4e | 440 | // if (splXY->FindX(localX)<1 || splXZ->FindX(localX)<1) continue; |
441 | if ( localX<grXY->GetX()[0] || localX>grXY->GetX()[grXY->GetN()-1] || localX<grXZ->GetX()[0] || localX>grXZ->GetX()[grXZ->GetN()-1]) continue; | |
b0c26b55 | 442 | |
32438f4e | 443 | //get interpolated value at the center for the pad row |
444 | // using splines | |
05da1b4e | 445 | // const Double_t localY=splXY->Eval(localX/*,0x0,"S"*/); |
446 | // const Double_t localZ=splXZ->Eval(localX/*,0x0,"S"*/); | |
447 | const Double_t localY=grXY->Eval(localX/*,0x0,"S"*/); | |
448 | const Double_t localZ=grXZ->Eval(localX/*,0x0,"S"*/); | |
32438f4e | 449 | Float_t xyz[3]={localX,localY,localZ}; |
526ddf0e | 450 | |
32438f4e | 451 | if (!SetupCluster(tempCl,xyz,sec,t0)) continue; |
d1cf83f5 | 452 | tempCl.SetLabel(tr.GetUniqueID(), 0); |
0403120d | 453 | |
32438f4e | 454 | if (type==0) tr.AddSpacePoint(tempCl); |
455 | else tr.AddDistortedSpacePoint(tempCl); | |
456 | // printf("SetupCluster %3d: (%.2f, %.2f, %.2f), %d, %.2f\n",irow,xyz[0],xyz[1],xyz[2],sec,t0); | |
457 | } | |
526ddf0e | 458 | |
32438f4e | 459 | delete splXY; |
460 | splXY=0x0; | |
461 | delete splXZ; | |
462 | splXZ=0x0; | |
463 | ||
464 | } | |
526ddf0e | 465 | |
32438f4e | 466 | //________________________________________________________________ |
467 | Bool_t AliToyMCEventGenerator::SetupCluster(AliTPCclusterMI &tempCl, Float_t xyz[3], Int_t sec, Double_t t0) | |
468 | { | |
469 | // | |
470 | // | |
471 | // | |
526ddf0e | 472 | |
e83fd282 | 473 | // intrinsic cluster resolution is 1mm |
32438f4e | 474 | const Double_t kSigmaY = 0.1; |
475 | const Double_t kSigmaZ = 0.1; | |
476 | const Double_t kMaxZ0 = fTPCParam->GetZLength(); | |
477 | //TODO: Get this from the OCDB at some point? | |
478 | const Double_t kDriftVel = fTPCParam->GetDriftV(); | |
e83fd282 | 479 | |
480 | // smear the ideal positions with the cluster resolution | |
481 | xyz[1]+=gRandom->Gaus(0,kSigmaY); | |
482 | xyz[2]+=gRandom->Gaus(0,kSigmaZ); | |
526ddf0e | 483 | |
32438f4e | 484 | tempCl.SetX(xyz[0]); |
485 | tempCl.SetY(xyz[1]); | |
486 | tempCl.SetZ(xyz[2]); | |
526ddf0e | 487 | |
32438f4e | 488 | tempCl.SetSigmaY2(kSigmaY*kSigmaY); |
489 | tempCl.SetSigmaZ2(kSigmaZ*kSigmaZ); | |
490 | ||
491 | // transform from the local coordinates to the coordinates expressed in pad coordinates | |
492 | Int_t index[3] = {0,sec,0}; | |
493 | fTPCParam->Transform2to3(xyz,index); | |
494 | fTPCParam->Transform3to4(xyz,index); | |
495 | fTPCParam->Transform4to8(xyz,index); | |
496 | ||
497 | const Int_t row = index[2]; | |
498 | const Int_t nPads = fTPCParam->GetNPads(sec, row); | |
499 | // pad is fractional, but it needs to be shifted from the center | |
500 | // to the edge of the row | |
501 | const Float_t pad = xyz[1] + nPads/2; | |
502 | ||
503 | tempCl.SetRow(row); | |
504 | tempCl.SetPad(pad); | |
505 | Float_t timeBin=Float_t(t0 + (kMaxZ0-TMath::Abs(tempCl.GetZ()))/kDriftVel); | |
506 | tempCl.SetTimeBin(timeBin); // set time as t0 + drift time from dist z | |
507 | tempCl.SetDetector(sec); | |
508 | ||
509 | //check if we are in the active area | |
510 | if (pad<0 || pad>=nPads) return kFALSE; | |
511 | ||
512 | return kTRUE; | |
526ddf0e | 513 | } |
32438f4e | 514 | |
a1a695e5 | 515 | //________________________________________________________________ |
516 | Bool_t AliToyMCEventGenerator::ConnectOutputFile() | |
517 | { | |
518 | // | |
519 | // Create the output file name and tree and connect the event | |
520 | // | |
521 | ||
522 | fOutFile = new TFile(fOutputFileName.Data(),"recreate"); | |
523 | ||
524 | if (!fOutFile || !fOutFile->IsOpen()){ | |
525 | delete fOutFile; | |
526 | fOutFile=0x0; | |
527 | return kFALSE; | |
528 | } | |
529 | ||
530 | fOutTree = new TTree("toyMCtree","Tree with toyMC simulation"); | |
531 | fOutTree->Branch("event","AliToyMCEvent",&fEvent); | |
532 | ||
0403120d | 533 | gROOT->cd(); |
534 | ||
a1a695e5 | 535 | return kTRUE; |
536 | } | |
537 | ||
538 | //________________________________________________________________ | |
539 | Bool_t AliToyMCEventGenerator::CloseOutputFile() | |
540 | { | |
541 | // | |
542 | // close the output file | |
543 | // | |
544 | if (!fOutFile) return kFALSE; | |
545 | fOutFile->Write(); | |
546 | fOutFile->Close(); | |
547 | delete fOutFile; | |
548 | fOutFile=0x0; | |
549 | ||
550 | return kTRUE; | |
551 | } | |
552 | ||
553 | //________________________________________________________________ | |
554 | void AliToyMCEventGenerator::FillTree() | |
555 | { | |
556 | // fill the tree | |
0403120d | 557 | if (fOutTree&&fEvent) fOutTree->Fill(); |
a1a695e5 | 558 | } |
559 | ||
cd8ed0ac | 560 | //________________________________________________________________ |
223d9e38 | 561 | void AliToyMCEventGenerator::SetSpaceCharge(EEpsilon epsilon, EGasType gasType/*=kNeCO2_9010*/, |
562 | ECollRate collRate/*=k50kHz*/, ECorrection corrType/*=kLookup*/) | |
cd8ed0ac | 563 | { |
564 | // | |
565 | // Set the space charge conditions | |
566 | // | |
223d9e38 | 567 | fCorrectionFile="$ALICE_ROOT/TPC/Calib/maps/SC"; |
cd8ed0ac | 568 | switch (gasType) { |
569 | case kNeCO2_9010: | |
223d9e38 | 570 | fCorrectionFile.Append("_NeCO2"); |
cd8ed0ac | 571 | break; |
d5715c32 | 572 | case kNeCO2N2_90105: |
573 | fCorrectionFile.Append("_NeCO2N2"); | |
574 | break; | |
cd8ed0ac | 575 | } |
576 | switch (epsilon) { | |
577 | case kEps5: | |
223d9e38 | 578 | fCorrectionFile.Append("_eps5"); |
cd8ed0ac | 579 | break; |
580 | case kEps10: | |
223d9e38 | 581 | fCorrectionFile.Append("_eps10"); |
cd8ed0ac | 582 | break; |
583 | case kEps20: | |
223d9e38 | 584 | fCorrectionFile.Append("_eps20"); |
cd8ed0ac | 585 | break; |
d5715c32 | 586 | case kEps25: |
587 | fCorrectionFile.Append("_eps25"); | |
588 | break; | |
589 | case kEps30: | |
590 | fCorrectionFile.Append("_eps30"); | |
591 | break; | |
592 | case kEps35: | |
593 | fCorrectionFile.Append("_eps35"); | |
594 | break; | |
595 | case kEps40: | |
596 | fCorrectionFile.Append("_eps40"); | |
597 | break; | |
cd8ed0ac | 598 | } |
599 | switch (collRate) { | |
600 | case k50kHz: | |
223d9e38 | 601 | fCorrectionFile.Append("_50kHz"); |
602 | break; | |
603 | } | |
604 | switch (corrType) { | |
605 | case kLookup: | |
606 | fCorrectionFile.Append("_precal.lookup.root"); | |
607 | break; | |
608 | case kSpaceChargeFile: | |
609 | fCorrectionFile.Append("_precal.root"); | |
cd8ed0ac | 610 | break; |
611 | } | |
cd8ed0ac | 612 | } |
613 | ||
614 | //________________________________________________________________ | |
615 | void AliToyMCEventGenerator::InitSpaceCharge() | |
616 | { | |
617 | // | |
618 | // init the space charge conditions | |
619 | // this should be called after the tree was connected | |
620 | // | |
621 | ||
2dd02504 | 622 | if (HasSCList()) { |
623 | InitSpaceChargeList(); | |
624 | return; | |
625 | } | |
626 | ||
223d9e38 | 627 | AliInfo(Form("Using space charge map file: '%s'",fCorrectionFile.Data())); |
628 | ||
862220e2 | 629 | SetCorrectionFromFile(fCorrectionFile, fTPCCorrection); |
cd8ed0ac | 630 | |
631 | if (fOutTree){ | |
632 | AliInfo("Attaching space charge map file name to the tree"); | |
223d9e38 | 633 | fOutTree->GetUserInfo()->Add(new TObjString(fCorrectionFile.Data())); |
cd8ed0ac | 634 | } |
635 | } | |
2dd02504 | 636 | |
637 | //________________________________________________________________ | |
638 | void AliToyMCEventGenerator::InitSpaceChargeList() | |
639 | { | |
640 | // | |
641 | // init space charge conditions from a list of files | |
642 | // this should be called after the tree was connected | |
643 | // | |
644 | ||
645 | std::ifstream file(fSCListFile.Data()); | |
646 | TString list; | |
647 | list.ReadFile(file); | |
648 | ||
649 | TObjArray *arr=list.Tokenize("\n"); | |
650 | if (!arr->GetEntriesFast()) { | |
651 | delete arr; | |
652 | AliFatal(Form("No SC file initialised. SC list '%s' seems empty",fSCListFile.Data())); | |
653 | return; | |
654 | } | |
655 | ||
656 | // it is assumed that in case of an input list | |
657 | // fCorrectionFile contains the name of the average correction | |
658 | // to be then used in the reconstruction | |
659 | if (fOutTree){ | |
660 | if (fCorrectionFile.IsNull()) { | |
661 | AliFatal("List of SC files set, but no average map is specified. Use 'SetSpaceChargeFile' to do so"); | |
662 | return; | |
663 | } | |
664 | AliInfo("Attaching average space charge map file name to the tree"); | |
665 | fOutTree->GetUserInfo()->Add(new TObjString(fCorrectionFile.Data())); | |
666 | } | |
667 | ||
862220e2 | 668 | // check for an average map |
669 | if (!fCorrectionFile.IsNull()) { | |
670 | SetCorrectionFromFile(fCorrectionFile, fTPCCorrectionAv); | |
671 | } | |
2dd02504 | 672 | |
673 | // case of non preread | |
674 | // store the names of the files | |
675 | if (!fPrereadSCList) { | |
676 | if (fSCList) delete fSCList; | |
677 | fSCList=arr; | |
678 | return; | |
679 | } | |
680 | ||
681 | // case of preread | |
682 | // load all SC files and set them to the list | |
683 | if (!fSCList) fSCList=new TObjArray; | |
684 | fSCList->SetOwner(); | |
685 | fSCList->Delete(); | |
686 | ||
687 | for (Int_t ifile=0; ifile<arr->GetEntriesFast(); ++ifile) { | |
862220e2 | 688 | TString scname=arr->At(ifile)->GetName(); |
689 | AliTPCCorrection *sc=0x0; | |
690 | SetCorrectionFromFile(scname, sc); | |
2dd02504 | 691 | if (!sc) continue; |
2dd02504 | 692 | fSCList->Add(sc); |
693 | } | |
694 | } | |
695 | ||
696 | //________________________________________________________________ | |
697 | void AliToyMCEventGenerator::IterateSC(Int_t ipos) | |
698 | { | |
699 | // | |
700 | // In case a list of SC files is set iterate over them | |
701 | // | |
702 | ||
703 | if (!HasSCList()) return; | |
704 | ||
705 | if (ipos<0) { | |
706 | if (fOutTree) ipos=fOutTree->GetEntries(); | |
707 | else ipos=0; | |
708 | } | |
709 | ||
710 | TObject *sc=fSCList->At(ipos%fSCList->GetEntriesFast()); | |
711 | AliInfo(Form("Event: %d - SC: %s",ipos,sc->GetName())); | |
712 | // case SC files have been preread | |
713 | if (fPrereadSCList) { | |
714 | fTPCCorrection=(AliTPCCorrection*)sc; | |
715 | return; | |
716 | } | |
717 | ||
718 | // case no preread was done | |
719 | TString &file=((TObjString*)sc)->String(); | |
720 | delete fTPCCorrection; | |
721 | fTPCCorrection=0x0; | |
722 | ||
862220e2 | 723 | SetCorrectionFromFile(file, fTPCCorrection); |
724 | ||
725 | if (!fTPCCorrection) { | |
726 | AliFatal(Form("Could not read SC map from SC file '%s'",file.Data())); | |
2dd02504 | 727 | return; |
728 | } | |
729 | ||
862220e2 | 730 | } |
731 | ||
732 | //________________________________________________________________ | |
733 | Float_t AliToyMCEventGenerator::GetSCScalingFactor(AliTPCCorrection *corr, AliTPCCorrection *averageCorr, Float_t &chi2) | |
734 | { | |
735 | // | |
736 | // calculate the scaling factor | |
737 | // between the fluctuation map and the average map | |
738 | // | |
739 | ||
740 | TLinearFitter fitter(2,"pol1"); | |
741 | ||
742 | for (Float_t iz=-245; iz<=245; iz+=10) { | |
743 | Short_t roc=(iz>=0)?0:18; | |
744 | for (Float_t ir=86; ir<250; ir+=10) { | |
745 | for (Float_t iphi=0; iphi<TMath::TwoPi(); iphi+=10*TMath::DegToRad()){ | |
746 | Float_t x=ir*(Float_t)TMath::Cos(iphi); | |
747 | Float_t y=ir*(Float_t)TMath::Sin(iphi); | |
748 | Float_t x3[3] = {x,y,iz}; | |
749 | Float_t dx3[3] = {0.,0.,0.}; | |
750 | Float_t dx3av[3] = {0.,0.,0.}; | |
751 | ||
752 | corr->GetDistortion(x3,roc,dx3); | |
753 | averageCorr->GetDistortion(x3,roc,dx3av); | |
754 | ||
755 | Double_t dr = TMath::Sqrt(dx3[0]*dx3[0] + dx3[1]*dx3[1]); | |
756 | Double_t drav = TMath::Sqrt(dx3av[0]*dx3av[0] + dx3av[1]*dx3av[1]); | |
757 | ||
758 | fitter.AddPoint(&drav,dr); | |
759 | } | |
760 | } | |
761 | } | |
762 | ||
763 | fitter.Eval(); | |
764 | chi2 = fitter.GetChisquare()/fitter.GetNpoints(); | |
765 | return fitter.GetParameter(1); | |
766 | } | |
767 | ||
768 | //________________________________________________________________ | |
769 | void AliToyMCEventGenerator::SetSCScalingFactor() | |
770 | { | |
771 | // | |
772 | // if running with a SC list calculate the scaling factor | |
773 | // between the fluctuation map and the average map | |
774 | // | |
775 | ||
5414766f | 776 | if ( !(fCalculateScaling && HasSCList() && fTPCCorrection && fTPCCorrectionAv && fEvent) ) return; |
862220e2 | 777 | |
778 | // loop over several z, r and phi bins and find a factor that minimises | |
779 | // the distortions between the current map and the average map | |
780 | ||
781 | Float_t chi2 = 0.; | |
782 | Float_t factor = GetSCScalingFactor(fTPCCorrection, fTPCCorrectionAv, chi2); | |
783 | ||
784 | fEvent->SetSCscale(factor); | |
785 | fEvent->SetSCscaleChi2(chi2); | |
786 | } | |
787 | ||
788 | //________________________________________________________________ | |
e2cfbac8 | 789 | void AliToyMCEventGenerator::SetCorrectionFromFile(TString file, AliTPCCorrection* &corr) |
862220e2 | 790 | { |
791 | // | |
792 | // read the correction from file and set it to corr | |
793 | // | |
794 | ||
795 | corr=0x0; | |
796 | TString corrName("map"); | |
797 | ||
798 | // allow for specifying an object name for the AliTPCCorrection in the file name | |
799 | // separated by a ':' | |
e2cfbac8 | 800 | TObjArray *arr=file.Tokenize(":"); |
862220e2 | 801 | if (arr->GetEntriesFast()>1) { |
e2cfbac8 | 802 | file=arr->At(0)->GetName(); |
862220e2 | 803 | corrName=arr->At(1)->GetName(); |
804 | } | |
805 | delete arr; | |
806 | ||
807 | ||
808 | TFile f(file.Data()); | |
809 | if (!f.IsOpen()||f.IsZombie()) { | |
e2cfbac8 | 810 | printf("E-AliToyMCEventGenerator::Could not open SC file '%s'",file.Data()); |
2dd02504 | 811 | return; |
812 | } | |
813 | ||
862220e2 | 814 | corr=(AliTPCSpaceCharge3D*)f.Get(corrName.Data()); |
815 | if (corr) corr->SetName(f.GetName()); | |
2dd02504 | 816 | } |
862220e2 | 817 | |
818 |