1 /**************************************************************************
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15 #include "AliITSOnlineSDDInjectors.h"
17 #include <TGraphErrors.h>
22 ///////////////////////////////////////////////////////////////////
24 // Implementation of the class used for SDD injector analysis //
25 // Origin: F.Prino, Torino, prino@to.infn.it //
27 ///////////////////////////////////////////////////////////////////
29 ClassImp(AliITSOnlineSDDInjectors)
31 const Float_t AliITSOnlineSDDInjectors::fgkSaturation = 1008.;
33 //______________________________________________________________________
34 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors():AliITSOnlineSDD(),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftVel(0.),fMaxDriftVel(0.),fThreshold(0.),fTimeDiffTB()
36 // default constructor
47 //______________________________________________________________________
48 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors(Int_t mod, Int_t sid):AliITSOnlineSDD(mod,sid),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftVel(0.),fMaxDriftVel(0.),fThreshold(0.),fTimeDiffTB()
50 // standard constructor
61 //______________________________________________________________________
62 AliITSOnlineSDDInjectors::~AliITSOnlineSDDInjectors(){
64 if(fHisto) delete fHisto;
65 if(fParam) delete [] fParam;
67 //______________________________________________________________________
68 void AliITSOnlineSDDInjectors::SetPositions(){
70 Float_t kLinFromCenterUm[3]={31860.,17460.,660.};
71 Float_t kAnodeFromCenterUm=35085;
72 for(Int_t i=0;i<3;i++){
73 fPosition[i]=kAnodeFromCenterUm-kLinFromCenterUm[i];
74 fPosition[i]/=10000.; // from microns to cm
77 //______________________________________________________________________
78 void AliITSOnlineSDDInjectors::Reset(){
80 for(Int_t i=0;i<kNInjectors;i++){
84 for(Int_t i=0;i<kNInjectors;i++){
85 for(Int_t j=0;j<3;j++){
88 fRMSCentroid[i][j]=0.;
92 //______________________________________________________________________
93 void AliITSOnlineSDDInjectors::AnalyzeEvent(TH2F* his){
100 for(Int_t j=0;j<kNInjectors;j++) CalcDriftVelocity(j);
101 FitDriftVelocityVsAnode();
103 //______________________________________________________________________
104 TGraphErrors* AliITSOnlineSDDInjectors::GetLineGraph(Int_t jlin) const{
106 Float_t x[4],y[4],ex[4],ey[4];
111 for(Int_t i=0;i<3;i++){
114 y[i+1]=fCentroid[jlin][i];
115 ey[i+1]=fRMSCentroid[jlin][i];
117 TGraphErrors *g=new TGraphErrors(4,x,y,ex,ey);
120 //______________________________________________________________________
121 Float_t AliITSOnlineSDDInjectors::GetDriftCoordinate(Float_t cAnode, Float_t cTimeBin){
124 for(Int_t i=0;i<=fPolOrder;i++) vel+=fParam[i]*TMath::Power(cAnode,(Float_t)i);
125 return vel*(cTimeBin-(fTbZero-fTimeDiffTB))*25/1000.;
127 //______________________________________________________________________
128 TGraphErrors* AliITSOnlineSDDInjectors::GetDriftVelocityGraph() const{
131 TGraphErrors *g=new TGraphErrors(0);
132 for(Int_t i=0;i<kNInjectors;i++){
134 g->SetPoint(ipt,GetAnodeNumber(i),fDriftVel[i]);
135 g->SetPointError(ipt,0,fSigmaDriftVel[i]);
141 //______________________________________________________________________
142 void AliITSOnlineSDDInjectors::CalcTimeBinZero(){
144 Float_t tzero=0.,intCont=0.;
145 for(Int_t ian=0;ian<fgkNAnodes;ian++){
146 for(Int_t itb=1;itb<fTbMin[0];itb++){
147 Float_t cont=fHisto->GetBinContent(itb,ian+1);
149 tzero+=cont*float(itb);
154 if(intCont>0) fTbZero=tzero/intCont;
156 //______________________________________________________________________
157 void AliITSOnlineSDDInjectors::FitDriftVelocityVsAnode(){
158 // fits the anode dependence of drift velocity with a polynomial
159 const Int_t kNn=fPolOrder+1;
160 Float_t **mat = new Float_t*[kNn];
161 for(Int_t i=0; i < kNn; i++) mat[i] = new Float_t[kNn];
162 Float_t *vect = new Float_t[kNn];
163 for(Int_t k1=0;k1<kNn;k1++){
165 for(Int_t k2=0;k2<kNn;k2++){
167 for(Int_t n=0; n<kNInjectors;n++){
168 Float_t x=(Float_t)GetAnodeNumber(n);
169 if(fDriftVel[n]>0) mat[k1][k2]+=TMath::Power(x,k1+k2)/TMath::Power(fSigmaDriftVel[n],2);
173 for(Int_t k1=0;k1<kNn;k1++){
174 for(Int_t n=0; n<kNInjectors;n++){
175 Float_t x=(Float_t)GetAnodeNumber(n);
176 if(fDriftVel[n]>0) vect[k1]+=fDriftVel[n]*TMath::Power(x,k1)/TMath::Power(fSigmaDriftVel[n],2);
179 Int_t *iPivot = new Int_t[kNn];
180 Int_t *indxR = new Int_t[kNn];
181 Int_t *indxC = new Int_t[kNn];
182 for(Int_t i=0;i<kNn;i++) iPivot[i]=0;
183 Int_t iCol=-1,iRow=-1;
184 for(Int_t i=0;i<kNn;i++){
186 for(Int_t j=0;j<kNn;j++){
188 for(Int_t k=0;k<kNn;k++){
190 if(TMath::Abs(mat[j][k])>=big){
191 big=TMath::Abs(mat[j][k]);
202 for(Int_t l=0;l<kNn;l++){
204 mat[iRow][l]=mat[iCol][l];
208 vect[iRow]=vect[iCol];
213 if(mat[iCol][iCol]==0) break;
214 Float_t pivinv=1./mat[iCol][iCol];
216 for(Int_t l=0;l<kNn;l++) mat[iCol][l]*=pivinv;
218 for(Int_t m=0;m<kNn;m++){
222 for(Int_t n=0;n<kNn;n++) mat[m][n]-=mat[iCol][n]*aux;
223 vect[m]-=vect[iCol]*aux;
231 if(fParam) delete [] fParam;
232 fParam=new Float_t[kNn];
233 for(Int_t i=0; i<kNn;i++)fParam[i]=vect[i];
235 for(Int_t i=0; i < kNn; i++) delete [] mat[i];
239 //______________________________________________________________________
240 void AliITSOnlineSDDInjectors::CalcDriftVelocity(Int_t jlin){
242 Float_t sumY=0,sumX=0,sumXX=0,sumYY=0.,sumXY=0,sumWEI=0.;
245 Float_t tzero=0,erry=0;
246 for(Int_t i=0;i<3;i++){
247 y[i]=fCentroid[jlin][i];
248 ey[i]=fRMSCentroid[jlin][i];
250 for(Int_t i=0;i<3;i++){
251 if(fGoodInj[jlin][i]){
252 sumY+=y[i]/ey[i]/ey[i];
253 sumX+=fPosition[i]/ey[i]/ey[i];
254 sumXX+=fPosition[i]*fPosition[i]/ey[i]/ey[i];
255 sumYY+=y[i]*y[i]/ey[i]/ey[i];
256 sumXY+=fPosition[i]*y[i]/ey[i]/ey[i];
257 sumWEI+=1./ey[i]/ey[i];
258 tzero=fTbZero/ey[i]/ey[i];
263 Float_t vel=0,evel=0;
265 Float_t slope=(sumWEI*sumXY-sumY*sumX)/(sumWEI*sumXX-sumX*sumX);
266 Float_t eslope=TMath::Sqrt(sumWEI/(sumWEI*sumXX-sumX*sumX));
267 vel=1./slope*10000./25.;// micron/ns
268 evel=eslope/slope/slope*10000./25.;// micron/ns
271 Float_t slope=(sumY-tzero)/sumX;
272 Float_t eslope=erry/sumX;
273 vel=1./slope*10000./25.;// micron/ns
274 evel=eslope/slope/slope*10000./25.;// micron/ns
276 if(vel>fMaxDriftVel||vel<fMinDriftVel){
281 fSigmaDriftVel[jlin]=evel;
283 //______________________________________________________________________
284 Int_t AliITSOnlineSDDInjectors::GetAnodeNumber(Int_t iInjLine) const{
287 if(iInjLine>32) return ian;
290 if(iInjLine==32) ian--;
293 if(iInjLine==0) ian=0;
298 //______________________________________________________________________
299 void AliITSOnlineSDDInjectors::FindGoodInjectors(){
301 for(Int_t iii=0;iii<kNInjectors;iii++){
302 Int_t ian=GetAnodeNumber(iii);
303 for(Int_t ninj=0;ninj<3;ninj++){
304 for(Int_t jjj=fTbMin[ninj];jjj<fTbMax[ninj];jjj++){
305 Float_t c1=fHisto->GetBinContent(jjj,ian+1);
306 Float_t c2=fHisto->GetBinContent(jjj+1,ian+1);
307 Float_t c3=fHisto->GetBinContent(jjj+2,ian+1);
308 if(c1>fThreshold && c2>fThreshold && c3>fThreshold){
309 fGoodInj[iii][ninj]=1;
313 // for(Int_t jjj=fTbMin[ninj];jjj<fTbMax[ninj];jjj++){
314 // Float_t c1=fHisto->GetBinContent(jjj,ian+1);
315 // if(c1>=fgkSaturation){
316 // fGoodInj[iii][ninj]=0;
323 //______________________________________________________________________
324 void AliITSOnlineSDDInjectors::FindCentroids(){
326 for(Int_t iii=0;iii<kNInjectors;iii++){
327 Int_t ian=GetAnodeNumber(iii);
328 for(Int_t ninj=0;ninj<3;ninj++){
329 if(!fGoodInj[iii][ninj]) continue;
332 for(Int_t jjj=fTbMin[ninj];jjj<fTbMax[ninj];jjj++){
333 Float_t cont=fHisto->GetBinContent(jjj,ian+1);
342 Float_t cont=fHisto->GetBinContent(jjj,ian+1);
343 if(cont<fThreshold) break;
344 if(cont<fgkSaturation){
345 fCentroid[iii][ninj]+=cont*(Float_t)jjj;
346 fRMSCentroid[iii][ninj]+=cont*TMath::Power((Float_t)jjj,2);
353 Float_t cont=fHisto->GetBinContent(jjj,ian+1);
354 if(cont<fThreshold) break;
355 if(cont<fgkSaturation){
356 fCentroid[iii][ninj]+=cont*float(jjj);
357 fRMSCentroid[iii][ninj]+=cont*TMath::Power((Float_t)jjj,2);
363 fCentroid[iii][ninj]/=intCont;
364 fRMSCentroid[iii][ninj]=TMath::Sqrt(fRMSCentroid[iii][ninj]/intCont-fCentroid[iii][ninj]*fCentroid[iii][ninj]);
367 fCentroid[iii][ninj]=0.;
368 fRMSCentroid[iii][ninj]=0.;
369 fGoodInj[iii][ninj]=0;
371 if(fRMSCentroid[iii][ninj]==0) fGoodInj[iii][ninj]=0;
375 //______________________________________________________________________
376 void AliITSOnlineSDDInjectors::PrintInjMap(){
378 for(Int_t iii=0;iii<kNInjectors;iii++){
379 printf("Line%d-Anode%d: %d %d %d\n",iii,GetAnodeNumber(iii),fGoodInj[iii][0],fGoodInj[iii][1],fGoodInj[iii][2]);
382 //______________________________________________________________________
383 void AliITSOnlineSDDInjectors::PrintCentroids(){
385 for(Int_t iii=0;iii<kNInjectors;iii++){
386 printf("Line%d-Anode%d: %f+-%f %f+-%f %f+-%f\n",iii,GetAnodeNumber(iii),fCentroid[iii][0],fRMSCentroid[iii][0],fCentroid[iii][1],fRMSCentroid[iii][1],fCentroid[iii][2],fRMSCentroid[iii][2]);
389 //______________________________________________________________________
390 void AliITSOnlineSDDInjectors::WriteToASCII(Int_t evNumb, UInt_t timeStamp, Int_t optAppend){
392 Char_t outfilnam[100];
393 sprintf(outfilnam,"SDDinj_mod%03d_sid%d.data",fModuleId,fSide);
395 if(optAppend==0) outf=fopen(outfilnam,"w");
396 else outf=fopen(outfilnam,"a");
397 fprintf(outf,"%d %d ",evNumb,timeStamp);
398 for(Int_t ic=0;ic<fPolOrder+1;ic++){
399 fprintf(outf,"%G ",fParam[ic]);