1 void SSDrecpointTest (Int_t evNumber1=0,Int_t evNumber2=0)
2 //void SSDrecpointTest (Int_t evNumber1=0,Int_t evNumber2=999)
4 /////////////////////////////////////////////////////////////////////////
5 // This macro is a small example of a ROOT macro
6 // illustrating how to read the output of GALICE
7 // and fill some histograms.
9 // Root > .L anal.C //this loads the macro in memory
10 // Root > anal(); //by default process first event
11 // Root > anal(2); //process third event
14 <img src="gif/anal.gif">
17 /////////////////////////////////////////////////////////////////////////
19 // Dynamically link some shared libs
21 if (gClassTable->GetID("AliRun") < 0) {
22 gROOT->LoadMacro("loadlibs.C");
29 // Connect the Root Galice file containing Geometry, Kine and Hits
30 TString *str = new TString("galice.root");
31 TFile *file = (TFile*)gROOT->GetListOfFiles()->FindObject(str->Data());
32 if (!file) file = new TFile(str->Data(),"UPDATE");
34 // Get AliRun object from file or create it if not on file
36 gAlice = (AliRun*)file->Get("gAlice");
37 if (gAlice) printf("AliRun object found on file\n");
38 if (!gAlice) gAlice = new AliRun("gAlice","Alice test program");
42 // -------------- Create ntuples --------------------
84 ntuple = new TTree("ntuple","Demo ntuple");
85 ntuple->Branch("lay",&ntuple_st.lay,"lay/I");
86 ntuple->Branch("nxP",&ntuple_st.nxP,"nxP/I");
87 ntuple->Branch("nxN",&ntuple_st.nxN,"nxN/I");
88 ntuple->Branch("hitprim",&ntuple_st.hitprim,"hitprim/I");
89 ntuple->Branch("partcode",&ntuple_st.partcode,"partcode/I");
90 ntuple->Branch("ntrover",&ntuple_st.ntrover,"ntrover/I");
91 ntuple->Branch("x",&ntuple_st.x,"x/F");
92 ntuple->Branch("z",&ntuple_st.z,"z/F");
93 ntuple->Branch("dx",&ntuple_st.dx,"dx/F");
94 ntuple->Branch("dz",&ntuple_st.dz,"dz/F");
95 ntuple->Branch("pmod",&ntuple_st.pmod,"pmod/F");
97 ntuple1 = new TTree("ntuple1","Demo ntuple1");
98 ntuple1->Branch("lay",&ntuple1_st.lay,"lay/I");
99 ntuple1->Branch("lad",&ntuple1_st.lad,"lad/I");
100 ntuple1->Branch("det",&ntuple1_st.det,"det/I");
101 ntuple1->Branch("nxP",&ntuple1_st.nxP,"nxP/I");
102 ntuple1->Branch("nxN",&ntuple1_st.nxN,"nxN/I");
103 ntuple1->Branch("qclP",&ntuple1_st.qclP,"qclP/F");
104 ntuple1->Branch("qclN",&ntuple1_st.qclN,"qclN/F");
105 ntuple1->Branch("qrec",&ntuple1_st.qrec,"qrec/F");
106 ntuple1->Branch("dx",&ntuple1_st.dx,"dx/F");
107 ntuple1->Branch("dz",&ntuple1_st.dz,"dz/F");
108 ntuple1->Branch("noverlaps",&ntuple1_st.noverlaps,"noverlaps/I");
109 ntuple1->Branch("noverprim",&ntuple1_st.noverprim,"noverprim/I");
110 ntuple1->Branch("ntrover",&ntuple1_st.ntrover,"ntrover/I");
112 ntuple2 = new TTree("ntuple2","Demo ntuple2");
113 ntuple2->Branch("nxP",&ntuple2_st.nxP,"nxP/I");
114 ntuple2->Branch("nxN",&ntuple2_st.nxN,"nxN/I");
115 ntuple2->Branch("x",&ntuple2_st.x,"x/F");
116 ntuple2->Branch("z",&ntuple2_st.z,"z/F");
119 // Create Histogramms
121 TH1F *NxP5 = new TH1F("NxP5","P cluster size for layer 5",20,0.,20.);
122 TH1F *NxN5 = new TH1F("NxN5","N cluster size for layer 5",20,0.,20.);
123 TH1F *NxP6 = new TH1F("NxP6","P cluster size for layer 6",20,0.,20.);
124 TH1F *NxN6 = new TH1F("NxN6","N cluster size for layer 6",20,0.,20.);
126 TH1F *Xres5 = new TH1F("Xres5","Xrec and Xgen difference (micr) for layers 5",100,-200.,200.);
127 TH1F *Xres6 = new TH1F("Xres6","Xrec and Xgen difference (micr) for layers 6",100,-200.,200.);
128 TH1F *Zres5 = new TH1F("Zres5","Zrec and Zgen difference (micr) for layers 5",100,-8000.,8000.);
129 TH1F *Zres6 = new TH1F("Zres6","Zrec and Zgen difference (micr) for layers 6",100,-8000.,8000.);
130 TH1F *Path5 = new TH1F("Path5","Path length in Si",100,0.,600.);
131 TH1F *Path6 = new TH1F("Path6","Path length in Si",100,0.,600.);
132 TH1F *dEdX = new TH1F("dEdX","dEdX (KeV)",100,0.,500.);
133 TH2F *adcPadcN5all = new TH2F("adcPadcN5all","adcP/N correlation for lay5",100,0.,200.,100,0.,200.);
134 TH2F *adcPadcN6all = new TH2F("adcPadcN6all","adcP/N correlation for lay6",100,0.,200.,100,0.,200.);
135 TH2F *adcPadcN5cut = new TH2F("adcPadcN5cut","adcP/N correlation for lay5 and cut of P-N signas",100,0.,200.,100,0.,200.);
136 TH2F *adcPadcN6cut = new TH2F("adcPadcN6cut","adcP/N correlation for lay6 and cut of P-N signals",100,0.,200.,100,0.,200.);
139 AliITS *ITS = (AliITS*) gAlice->GetModule("ITS");
140 if (!ITS) { cout << "no ITS" << endl; return; }
142 //AliITSgeom *aliitsgeo = ITS->GetITSgeom();
143 AliITSgeom *geom = ITS->GetITSgeom();
146 //Int_t cp[8]={0,0,0,0,0,0,0,0};
148 //cout << "SSD" << endl;
150 AliITSDetType *iDetType=ITS->DetType(2);
151 AliITSsegmentationSSD *seg2=(AliITSsegmentationSSD*)iDetType->GetSegmentationModel();
152 AliITSresponseSSD *res2 = (AliITSresponseSSD*)iDetType->GetResponseModel();
153 //res2->SetSigmaSpread(3.,2.);
154 AliITSsimulationSSD *sim2=new AliITSsimulationSSD(seg2,res2);
155 ITS->SetSimulationModel(2,sim2);
157 TClonesArray *dig2 = ITS->DigitsAddress(2);
158 TClonesArray *recp2 = ITS->ClustersAddress(2);
159 AliITSClusterFinderSSD *rec2=new AliITSClusterFinderSSD(seg2,dig2);
160 ITS->SetReconstructionModel(2,rec2);
163 printf("SSD dimensions %f %f %f \n",seg2->Dx(),seg2->Dz(),seg2->Dy());
164 printf("SSD nstrips %d %d \n",seg2->Npz(),seg2->Npx());
165 Float_t ylim = seg2->Dy()/2 - 12;
174 for (int nev=0; nev<= evNumber2; nev++) {
175 Int_t nparticles = 0;
176 nparticles = gAlice->GetEvent(nev);
177 cout << "nev " << nev <<endl;
178 cout << "nparticles " << nparticles <<endl;
179 if (nev < evNumber1) continue;
180 if (nparticles <= 0) return;
183 AliITSRecPoint *itsPnt = 0;
184 AliITSRawClusterSSD *itsClu = 0;
186 // Get Hit, Cluster & Recpoints Tree Pointers
188 TTree *TH = gAlice->TreeH();
189 Int_t nenthit=TH->GetEntries();
190 printf("Found %d entries in the Hit tree (must be one per track per event!)\n",nenthit);
193 TTree *TC=ITS->TreeC();
194 Int_t nentclu=TC->GetEntries();
195 printf("Found %d entries in the Cluster tree (must be one per module per event!)\n",nentclu);
197 TTree *TR = gAlice->TreeR();
198 Int_t nentrec=TR->GetEntries();
199 printf("Found %d entries in the RecPoints tree\n",nentrec);
201 // Get Pointers to Clusters & Recpoints TClonesArrays
203 TClonesArray *ITSclu = ITS->ClustersAddress(2);
204 printf ("ITSclu %p \n",ITSclu);
205 TClonesArray *ITSrec = ITS->RecPoints();
206 printf ("ITSrec %p \n",ITSrec);
219 ITS->InitModules(-1,nmodules);
220 ITS->FillModules(nev,0,nmodules,"","");
222 TObjArray *fITSmodules = ITS->GetModules();
224 Int_t first0 = geom->GetStartDet(0); // SPD
225 Int_t last0 = geom->GetLastDet(0); // SPD
226 Int_t first1 = geom->GetStartDet(1); // SDD
227 Int_t last1 = geom->GetLastDet(1); // SDD
228 Int_t first2 = geom->GetStartDet(2); // SSD
229 Int_t last2 = geom->GetLastDet(2); // SSD
231 // For the SPD: first0 = 0, last0 = 239 (240 modules);
232 // for the SDD: first1 = 240, last1 = 499 (260 modules);
233 // for the SSD: first2 = 500, last2 = 2269 (1770 modules).
235 printf("det type %d first0, last0 %d %d \n",0,first0,last0);
236 printf("det type %d first1, last1 %d %d \n",1,first1,last1);
237 printf("det type %d first2, last2 %d %d \n",2,first2,last2);
239 // module loop for the SSD
240 for (mod=first2; mod<last2+1; mod++) { // for the "ALL" option
241 //for (mod=0; mod<last2-first2+1; mod++) { //for the "SSD" option
243 TTree *TR = gAlice->TreeR();
244 Int_t nentrec=TR->GetEntries();
245 //printf("Found %d entries in the RecPoints tree\n",nentrec);
247 //cout << "CLUSTERS: reset" << endl;
248 ITS->ResetClusters();
249 //cout << "CLUSTERS: get" << endl;
251 //cout << "RECPOINTS: reset" << endl;
252 ITS->ResetRecPoints();
253 //cout << "RECPOINTS: get" << endl;
254 //TR->GetEvent(mod+1); // for the V3.04 AliRoot
255 TR->GetEvent(mod); // for the V3.05 AliRoot
257 Int_t nrecp = ITSrec->GetEntries();
259 //if (nrecp) printf("Found %d rec points for module %d\n",nrecp,mod);
260 if (!nrecp) continue;
261 Int_t nclusters = ITSclu->GetEntries();
262 totclust += nclusters;
263 //if (nclusters) printf("Found %d clusters for module %d\n",nrecc,mod);
265 //AliITSmodule *Mod = (AliITSmodule *)fITSmodules->At(mod+first2);
266 // for the "SSD" option
268 AliITSmodule *Mod = (AliITSmodule *)fITSmodules->At(mod);
269 // for the "ALL" option
271 // printf("Mod: %X\n",Mod);
272 Int_t nhits = Mod->GetNhits();
274 cout <<" module,nrecp,nclusters,nhits ="<<mod<<","<<nrecp<<","<<nclusters<<","<<nhits<< endl;
276 // ---------------- cluster/hit analysis ---------------------
279 Float_t pathInSSD = 300.;
281 // ---- Recpoint loop
282 for (Int_t pnt=0;pnt<nrecp;pnt++) {
283 itsPnt = (AliITSRecPoint*)ITSrec->At(pnt);
284 if(!itsPnt) continue;
285 itsClu = (AliITSRawClusterSSD*)ITSclu->At(pnt);
286 if(!itsClu) continue;
288 Int_t nxP = itsClu->fMultiplicity;
289 Int_t nxN = itsClu->fMultiplicityN;
290 Int_t ntrover = itsClu->fNtracks;
291 Float_t qclP = itsClu->fSignalP; // in ADC
292 Float_t qclN = itsClu->fSignalN; // in ADC
293 //Float_t dq = qclP - qclN;
294 Float_t qcut = itsClu->fQErr; // abs(dq)/signal,
297 Float_t xrec = 10000*itsPnt->GetX();
298 Float_t zrec = 10000*itsPnt->GetZ();
299 Float_t qrec = itsPnt->GetQ(); // in ADC, maximum from fSignalP/N
300 //Float_t dedx = itsPnt->GetdEdX(); // in KeV (ADC * 2.16)
301 Float_t dedx = itsPnt->fdEdX; // in KeV (ADC * 2.16)
303 Int_t tr1 = itsPnt->GetLabel(ii);
305 Int_t tr2 = itsPnt->GetLabel(ii);
307 Int_t tr3 = itsPnt->GetLabel(ii);
309 ntuple2_st.nxP = nxP;
310 ntuple2_st.nxN = nxN;
311 ntuple2_st.x = xrec/1000;
312 ntuple2_st.z = zrec/1000;
314 if(qcut < 0.18) ntuple2->Fill();
320 Float_t xhit0 = 1e+7;
321 Float_t yhit0 = 1e+7;
322 Float_t zhit0 = 1e+7;
325 for (Int_t hit=0;hit<nhits;hit++) {
327 itsHit = (AliITShit*)Mod->GetHit(hit);
330 Int_t hitlayer = itsHit->GetLayer();
331 Int_t hitladder= itsHit->GetLadder();
332 Int_t hitdet= itsHit->GetDetector();
334 Int_t track = itsHit->GetTrack();
336 Int_t hitstat = itsHit->GetTrackStatus();
338 Float_t zhit = 10000*itsHit->GetZL();
339 Float_t xhit = 10000*itsHit->GetXL();
340 Float_t yhit = 10000*itsHit->GetYL();
341 Float_t ehit = 1.0e+6*itsHit->GetIonization(); // hit energy, KeV
343 Int_t parent = itsHit->GetParticle()->GetFirstMother();
344 Int_t partcode = itsHit->GetParticle()->GetPdgCode();
346 // partcode (pdgCode): 11 - e-, 13 - mu-, 22 - gamma, 111 - pi0, 211 - i+
347 // 310 - K0s, 321 - K+, 2112 - n, 2212 - p, 3122 - lambda
349 Float_t pmod = itsHit->GetParticle()->P(); // the momentum at the
353 if(hitstat == 66 && yhit < -ylim) { // entering hit
359 if(hitstat == 66) continue; // Take the not entering hits only
361 if(xhit0 > 9e+6 || zhit0 > 9e+6 || yhit0 > 9e+6) {
362 //cout<<"default xhit0,zhit0,yhit0 ="<<xhit0<<","<<zhit0<<","<<yhit0<<endl;
368 // Consider the hits only with the track number equaled to one
370 if((track == tr1) || (track == tr2) || (track == tr3)) flagtrack = 1;
372 if(flagtrack == 1) { // the hit corresponds to the recpoint
376 //Float_t px = itsHit->GetPXL(); // the momenta at this GEANT point
377 //Float_t py = itsHit->GetPYL();
378 //Float_t pz = itsHit->GetPZL();
382 if(partcode == 11 && pmod < 6) dray = 1; // delta ray is e-
385 if((hitstat == 68 || hitstat == 33) && dray == 0) noverlaps=noverlaps + 1;
386 // overlapps for all hits but
387 // not for delta ray which
388 // also went out from the
389 // detector and returned
393 // x,z resolution colculation
394 if((hitstat == 68 || hitsat == 33) && dray == 0) {
395 Float_t xmed = (xhit + xhit0)/2;
396 Float_t zmed = (zhit + zhit0)/2;
397 Float_t xdif = xmed - xrec;
398 Float_t zdif = zmed - zrec;
401 hitprim = 1; // hitprim=1 for the primery particles
404 pathInSSD = TMath::Sqrt((xhit0-xhit)*(xhit0-xhit)+(yhit0-yhit)*(yhit0-yhit)+(zhit0-zhit)*(zhit0-zhit));
407 ntuple_st.lay = hitlayer;
410 ntuple_st.hitprim = hitprim;
411 ntuple_st.partcode = partcode;
412 ntuple_st.ntrover = ntrover;
413 ntuple_st.x = xrec/1000;
414 ntuple_st.z = zrec/1000;
417 ntuple_st.pmod = pmod;
419 //if(qcut < 0.18) ntuple->Fill();
422 //if(hitlayer == 5 && qcut < 0.18) {
427 Path5->Fill(pathInSSD);
429 //if(hitlayer == 6 && qcut < 0.18) {
433 Path6->Fill(pathInSSD);
436 } else { // non correspondent hit
439 } // end of hit-recpoint correspondence
444 if(noverlaps == 0) noverlaps = 1; // cluster contains one or more
448 ntuple1_st.lay = hitlayer;
449 ntuple1_st.lad = hitladder;
450 ntuple1_st.det = hitdet;
451 ntuple1_st.nxP = nxP;
452 ntuple1_st.nxN = nxN;
453 ntuple1_st.qclP = qclP*300/pathInSSD;
454 ntuple1_st.qclN = qclN*300/pathInSSD;
455 ntuple1_st.qrec = qrec*300/pathInSSD;
456 ntuple1_st.dx = xdif;
457 ntuple1_st.dz = zdif;
460 ntuple1_st.noverlaps = noverlaps;
461 ntuple1_st.noverprim = noverprim;
462 ntuple1_st.ntrover = ntrover;
464 //if(qcut < 0.18) ntuple1->Fill();
467 Float_t de = dedx*300./pathInSSD;
470 adcPadcN5all->Fill(qclP,qclN);
473 adcPadcN6all->Fill(qclP,qclN);
475 if(hitlayer == 5 && qcut < 0.18) {
476 adcPadcN5cut->Fill(qclP,qclN);
480 if(hitlayer == 6 && qcut < 0.18) {
481 adcPadcN6cut->Fill(qclP,qclN);
486 } //b.b. recpoint loop
490 TFile fhistos("SSD_his.root","RECREATE");
505 adcPadcN5all->Write();
506 adcPadcN6all->Write();
507 adcPadcN5cut->Write();
508 adcPadcN6cut->Write();
513 cout<<"!!! Histogramms and ntuples were written"<<endl;
515 TCanvas *c1 = new TCanvas("c1","ITS clusters",400,10,600,700);
518 gPad->SetFillColor(33);
519 Xres5->SetFillColor(42);
522 gPad->SetFillColor(33);
523 Zres5->SetFillColor(46);
526 gPad->SetFillColor(33);
527 Xres6->SetFillColor(42);
530 gPad->SetFillColor(33);
531 Zres6->SetFillColor(46);
534 cout<<"END test for clusters and hits "<<endl;