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Commit | Line | Data |
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aecdf013 | 1 | // ITS Track Class |
2 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
3 | // It contain all the usefull information for the track and the method to calculate, modify or extract them | |
4 | // The track is mainly caracterized by the state vector of elements (fX0, fX1, fX2, fX3, fX4) and the | |
5 | // corresponding covariance matrix of elements (C00, C10, ..... C44) that is triangular | |
6 | // | |
4ae5bbc4 | 7 | #include <Riostream.h> |
aecdf013 | 8 | #include <TMath.h> |
9 | #include <TVector.h> | |
10 | #include <TObjArray.h> | |
11 | #include "AliRun.h" | |
12 | #include "AliITSRad.h" | |
13 | #include "AliITSTrackV1.h" | |
14 | #include "AliGenerator.h" | |
af50998a | 15 | //#include "AliMagF.h" |
aecdf013 | 16 | |
17 | ||
18 | ClassImp(AliITSTrackV1) | |
19 | ||
20 | AliITSTrackV1::AliITSTrackV1() { | |
21 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
fd58b6ae | 22 | // default constructor |
23 | ||
24 | fTPCtrack = 0; | |
25 | fC00=fC10=fC11=fC20=fC21=fC22=fC30=fC31=fC32=fC33=fC40=fC41=fC42=fC43=fC44=0.; | |
26 | flistCluster = 0; | |
27 | fNumClustInTrack =0; | |
28 | fChi2=-1; | |
29 | flabel =0; | |
30 | fLayer = -1; | |
31 | fClusterInTrack = 0; | |
32 | frtrack=0.; | |
33 | fnoclust=0; | |
34 | fMass=0.13956995; //a pion by default | |
35 | fFieldFactor = 0.0; | |
def162f4 | 36 | fdEdx = 0.; // oggi |
37 | Int_t ia=0; // oggi | |
38 | for( ia=0; ia<4; ia++) fcor[ia]=0.; // oggi | |
39 | ||
fd58b6ae | 40 | } |
d0df5576 | 41 | AliITSTrackV1::AliITSTrackV1(Double_t fieldfactor) { |
fd58b6ae | 42 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it |
aecdf013 | 43 | // default constructor |
44 | ||
55cd883f | 45 | fTPCtrack = 0; |
aecdf013 | 46 | fC00=fC10=fC11=fC20=fC21=fC22=fC30=fC31=fC32=fC33=fC40=fC41=fC42=fC43=fC44=0.; |
cf411bb5 | 47 | flistCluster = 0; |
aecdf013 | 48 | fNumClustInTrack =0; |
49 | fChi2=-1; | |
50 | flabel =0; | |
51 | fVertex.ResizeTo(3); | |
52 | fErrorVertex.ResizeTo(3); | |
53 | fLayer = -1; | |
cf411bb5 | 54 | fClusterInTrack = 0; |
70a9314b | 55 | frtrack=0.; |
56 | fnoclust=0; | |
aecdf013 | 57 | fd2.ResizeTo(6); |
58 | ftgl2.ResizeTo(6); | |
a3894645 | 59 | fdtgl.ResizeTo(6); |
def162f4 | 60 | fMass=0.13956995; //a pion by default |
61 | fdEdx = 0.; | |
62 | Int_t ia=0; | |
63 | for( ia=0; ia<4; ia++) fcor[ia]=0.; | |
64 | ||
a3894645 | 65 | |
66 | //////////////////////////////////////// gets magnetic field factor //////////////////////////////// | |
67 | ||
af50998a | 68 | // AliMagF * fieldPointer = gAlice->Field(); |
69 | // fFieldFactor =(Double_t)fieldPointer-> SolenoidField()/10/.2; | |
70 | fFieldFactor = fieldfactor; | |
a3894645 | 71 | //cout<< " field factor = "<<fFieldFactor<<"\n"; getchar(); |
72 | ||
73 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// | |
74 | ||
aecdf013 | 75 | } |
76 | ||
77 | ||
78 | ||
d0df5576 | 79 | AliITSTrackV1::AliITSTrackV1(const AliITSTrackV1 &cobj) : TObject(cobj) { |
aecdf013 | 80 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it |
81 | // copy constructor | |
82 | ||
83 | fClusterInTrack = new TMatrix(6,9); | |
b7a35fb7 | 84 | Int_t i,j; |
b7a35fb7 | 85 | for(i=0; i<6; i++){ |
64ab0d55 | 86 | for(j=0; j<9; j++) (*fClusterInTrack)(i,j)=-1.; |
b7a35fb7 | 87 | } |
aecdf013 | 88 | flistCluster = new TObjArray; |
89 | fVertex.ResizeTo(3); | |
90 | fErrorVertex.ResizeTo(3); | |
91 | fVertex = cobj.fVertex; | |
92 | fErrorVertex = cobj.fErrorVertex; | |
93 | flabel = cobj.flabel; | |
94 | fLayer=cobj.fLayer; | |
95 | fTPCtrack = cobj.fTPCtrack; | |
96 | fNumClustInTrack = cobj.fNumClustInTrack; | |
97 | fChi2= cobj.fChi2; | |
98 | fX0=cobj.fX0; fX1=cobj.fX1; fX2=cobj.fX2; fX3=cobj.fX3; fX4=cobj.fX4; | |
99 | frtrack=cobj.frtrack; | |
100 | fDv=cobj.fDv; | |
101 | fZv=cobj.fZv; | |
102 | fsigmaDv=cobj.fsigmaDv; | |
103 | fsigmaZv=cobj.fsigmaZv; | |
104 | fd2.ResizeTo(6); | |
105 | ftgl2.ResizeTo(6); | |
106 | fdtgl.ResizeTo(6); | |
107 | fd2=cobj.fd2; | |
108 | ftgl2=cobj.ftgl2; | |
109 | fdtgl=cobj.fdtgl; | |
def162f4 | 110 | fnoclust=cobj.fnoclust; |
111 | fdEdx = cobj.fdEdx; | |
112 | Int_t ia=0; | |
113 | for( ia=0; ia<4; ia++) fcor[ia]=cobj.fcor[ia]; | |
114 | ||
aecdf013 | 115 | |
116 | fC00=cobj.fC00; fC10=cobj.fC10; fC11=cobj.fC11; fC20=cobj.fC20; fC21=cobj.fC21; | |
117 | fC22=cobj.fC22; fC30=cobj.fC30; fC31=cobj.fC31; fC32=cobj.fC32; fC33=cobj.fC33; | |
118 | fC40=cobj.fC40; fC41=cobj.fC41; fC42=cobj.fC42; fC43=cobj.fC43; fC44=cobj.fC44; | |
119 | ||
120 | *fClusterInTrack = *cobj.fClusterInTrack; | |
a3894645 | 121 | |
122 | fFieldFactor=cobj.fFieldFactor; | |
61231d74 | 123 | fMass=cobj.fMass; |
124 | ||
aecdf013 | 125 | for(i=0; i<cobj.flistCluster->GetSize(); i++) |
126 | flistCluster->AddLast(cobj.flistCluster->At(i)); | |
127 | ||
128 | } | |
129 | ||
af50998a | 130 | AliITSTrackV1::AliITSTrackV1(AliTPCtrack &obj, Double_t fieldfactor) |
aecdf013 | 131 | { |
132 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
133 | // special constructor to convert a TPC track into an ITS track | |
134 | ||
a3894645 | 135 | //////////////////////////////////////// gets magnetic field factor //////////////////////////////// |
136 | ||
af50998a | 137 | // AliMagF * fieldPointer = gAlice->Field(); |
138 | // fFieldFactor =(Double_t)fieldPointer-> SolenoidField()/10/.2; | |
139 | fFieldFactor = fieldfactor; | |
140 | // cout<< " field factor dentro alitrack = "<<fFieldFactor<<"\n";/* getchar();*/ | |
a3894645 | 141 | |
142 | ///////////////////////////////////////////////////////////////////////////////////////////////////////// | |
143 | ||
144 | ||
aecdf013 | 145 | fTPCtrack = &obj; |
146 | fVertex.ResizeTo(3); | |
147 | fErrorVertex.ResizeTo(3); | |
148 | ||
149 | fd2.ResizeTo(6); | |
150 | ftgl2.ResizeTo(6); | |
151 | fdtgl.ResizeTo(6); | |
152 | AliGenerator *gener = gAlice->Generator(); | |
153 | Float_t vxg,vyg,vzg; | |
154 | gener->GetOrigin(vxg,vyg,vzg); | |
155 | ||
156 | ||
157 | fVertex(0)=(Double_t)vxg; | |
158 | fVertex(1)=(Double_t)vyg; | |
159 | fVertex(2)=(Double_t)vzg; | |
160 | ||
161 | fLayer = 7; | |
aecdf013 | 162 | fClusterInTrack = new TMatrix(6,9); |
163 | ||
b7a35fb7 | 164 | Int_t i,j; |
b7a35fb7 | 165 | for(i=0; i<6; i++){ |
64ab0d55 | 166 | for(j=0; j<9; j++) (*fClusterInTrack)(i,j)=-1.; |
b7a35fb7 | 167 | } |
aecdf013 | 168 | flistCluster = new TObjArray; |
70a9314b | 169 | fNumClustInTrack = 0; |
def162f4 | 170 | fnoclust=0; |
171 | fdEdx = 0.; | |
172 | Int_t ia=0; | |
173 | for( ia=0; ia<4; ia++) fcor[ia]=0.; | |
aecdf013 | 174 | LmTPC(); |
175 | ||
176 | } | |
177 | ||
178 | ||
179 | AliITSTrackV1::~AliITSTrackV1() { | |
180 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
181 | //destructor | |
182 | ||
e73fe7f3 | 183 | if(flistCluster) { |
184 | flistCluster->Delete(); | |
185 | delete flistCluster; | |
186 | } | |
aecdf013 | 187 | if(fClusterInTrack) delete fClusterInTrack; |
188 | ||
189 | } | |
190 | ||
191 | void AliITSTrackV1::PutCElements(Double_t C00, Double_t C10, Double_t C11, Double_t C20, Double_t C21, | |
192 | Double_t C22, Double_t C30, Double_t C31, Double_t C32, Double_t C33, Double_t C40, | |
193 | Double_t C41, Double_t C42, Double_t C43, Double_t C44){ | |
194 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
195 | // puts elements of covariance matrix | |
196 | ||
197 | fC00=C00; fC10=C10; fC11=C11; fC20=C20; fC21=C21; fC22=C22; fC30=C30; fC31=C31; fC32=C32; fC33=C33; | |
198 | fC40=C40; fC41=C41; fC42=C42; fC43=C43; fC44=C44; | |
199 | } | |
200 | ||
201 | void AliITSTrackV1::GetCElements(Double_t &C00, Double_t &C10, Double_t &C11, Double_t &C20, Double_t &C21, | |
202 | Double_t &C22, Double_t &C30, Double_t &C31, Double_t &C32, Double_t &C33, Double_t &C40, | |
203 | Double_t &C41, Double_t &C42, Double_t &C43, Double_t &C44) const { | |
204 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
205 | // gets elements of covariance matrix | |
206 | ||
207 | ||
208 | C00=fC00; C10=fC10; C11=fC11; C20=fC20; C21=fC21; C22=fC22; C30=fC30; C31=fC31; C32=fC32; C33=fC33; | |
209 | C40=fC40; C41=fC41; C42=fC42; C43=fC43; C44=fC44; | |
210 | ||
211 | } | |
212 | ||
213 | void AliITSTrackV1::GetXElements(Double_t &X0, Double_t &X1, Double_t &X2, Double_t &X3, Double_t &X4) const { | |
214 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
215 | // gets the elements of the state vector | |
216 | X0=fX0; X1=fX1; X2=fX2; X3=fX3; X4=fX4; | |
217 | } | |
218 | ||
219 | void AliITSTrackV1::PutXElements(Double_t X0, Double_t X1, Double_t X2, Double_t X3, Double_t X4){ | |
220 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
221 | // puts the elements of the state vector | |
222 | fX0=X0; fX1=X1; fX2=X2; fX3=X3; fX4=X4; | |
223 | } | |
224 | ||
225 | void AliITSTrackV1::LmTPC() { | |
226 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
227 | // Transform the TPC state vector from TPC-local to master and build a new state vector ITS-type | |
228 | // The covariance matrix is also modified accordingly | |
229 | ||
230 | ||
231 | Double_t alpha = fTPCtrack->GetAlpha(); | |
232 | ||
233 | //printf("LmTPC: alpha %f\n",alpha); | |
234 | ||
235 | Double_t yTPC = fTPCtrack->GetY(); | |
236 | Double_t zTPC = fTPCtrack->GetZ(); | |
237 | Double_t cTPC = fTPCtrack->GetC(); | |
238 | Double_t etaTPC = fTPCtrack->GetEta(); | |
239 | Double_t tglTPC = fTPCtrack->GetTgl(); | |
240 | ||
241 | ||
242 | Double_t xm, ym, zm; | |
243 | Double_t sina = TMath::Sin(alpha); | |
244 | Double_t cosa = TMath::Cos(alpha); | |
245 | Double_t xl= fTPCtrack->GetX(); | |
246 | xm = xl * cosa - yTPC*sina; | |
247 | ym = xl * sina + yTPC*cosa; | |
248 | zm = zTPC; | |
249 | //cout<<" xl e alpha = "<<xl<<" "<<alpha<<"\n"; getchar(); | |
250 | ||
251 | Double_t x0m,y0m; | |
252 | ||
253 | ///////////////////////////////////// determine yo ////////////////////////////////////////////////// | |
254 | ||
255 | Double_t vxl=fVertex(0)*cosa+fVertex(1)*sina; | |
256 | Double_t vyl= -fVertex(0)*sina+fVertex(1)*cosa; | |
257 | Double_t xo,yo, signy; | |
258 | Double_t r = 1./cTPC; | |
259 | xo = etaTPC / cTPC; | |
aecdf013 | 260 | Double_t yo1, yo2, diffsq1, diffsq2; |
261 | yo1 = yTPC + TMath::Sqrt(r*r - (xl-xo)*(xl-xo)); | |
262 | yo2 = yTPC - TMath::Sqrt(r*r - (xl-xo)*(xl-xo)); | |
263 | diffsq1=TMath::Abs((yo1-vyl)*(yo1-vyl)+(xo-vxl)*(xo-vxl)-r*r); | |
264 | diffsq2=TMath::Abs((yo2-vyl)*(yo2- vyl)+(xo-vxl)*(xo-vxl)-r*r); | |
265 | if(diffsq1<diffsq2) {yo=yo1; signy=1.;} else {yo=yo2; signy=-1.;}; | |
266 | ||
267 | //////////////////////////////////////////////////////////////////////////////////////////////////// | |
268 | ||
269 | x0m = xo * cosa - yo * sina; | |
270 | y0m = xo * sina + yo * cosa; | |
271 | ||
272 | frtrack=TMath::Sqrt(xm*xm+ym*ym); | |
70a9314b | 273 | |
61231d74 | 274 | Double_t phi=TMath::ATan2(ym,xm); if(phi<0) phi=2.*TMath::Pi()+phi; |
aecdf013 | 275 | |
276 | fX0=phi; | |
277 | fX1=zm; | |
278 | fX3=tglTPC; | |
279 | fX4=cTPC; | |
280 | ||
281 | ||
282 | Double_t dd=TMath::Sqrt((x0m-fVertex(0))*(x0m-fVertex(0))+(y0m-fVertex(1))*(y0m-fVertex(1))); | |
283 | Double_t signdd; | |
284 | if (r>0) signdd=1.; else signdd=-1.; | |
285 | fX2=signdd*dd-r; | |
286 | //cout<<" fvertex = "<<fVertex(0)<<" "<<fVertex(1)<<" "<<fVertex(2)<<"\n"; | |
287 | ||
288 | Double_t cov[15]; | |
289 | fTPCtrack->GetCovariance(cov); | |
290 | ||
291 | Double_t dfidy, dDdy, dDdC, dDdeta; | |
292 | ||
293 | dfidy=(xm*cosa+ym*sina)/(frtrack*frtrack); | |
294 | dDdy=signdd*((y0m-fVertex(1))*cosa-(x0m-fVertex(0))*sina)/dd; | |
295 | Double_t dyodr=signy*(r+(xl-xo)*etaTPC)/TMath::Sqrt(r*r-(xl-xo)*(xl-xo)); | |
296 | Double_t dyomdr=sina*etaTPC+cosa*dyodr; | |
297 | Double_t dxomdr=cosa*etaTPC-sina*dyodr; | |
298 | Double_t ddddR=((x0m-fVertex(0))*dxomdr+(y0m-fVertex(1))*dyomdr)/dd; | |
299 | dDdC=-r*r*(signdd*ddddR-1.); | |
300 | Double_t dyoldxol=signy*(xl-xo)/TMath::Sqrt(r*r-(xl-xo)*(xl-xo)); | |
301 | Double_t dxomdeta=r*(cosa-sina*dyoldxol); | |
302 | Double_t dyomdeta=r*(sina+cosa*dyoldxol); | |
303 | dDdeta=signdd*((x0m-fVertex(0))*dxomdeta+(y0m-fVertex(1))*dyomdeta)/dd; | |
304 | ||
305 | Double_t f00=dfidy; | |
306 | Double_t f20=dDdy; | |
307 | Double_t f22=dDdC; | |
308 | Double_t f23=dDdeta; | |
309 | ||
310 | Double_t t00=cov[0]*f00; | |
311 | Double_t t02=cov[0]*f20+cov[6]*f22+cov[3]*f23; | |
312 | Double_t t20=cov[6]*f00; | |
313 | Double_t t22=cov[6]*f20+cov[9]*f22+cov[8]*f23; | |
314 | ||
315 | fC00=f00*t00; | |
316 | fC10=cov[1]*f00; | |
317 | fC11=cov[2]; | |
318 | fC20=f20*t00+f22*t20+f23*cov[3]*f00; | |
319 | fC21=f20*cov[1]+f22*cov[7]+f23*cov[4]; | |
320 | fC22=f20*t02+f22*t22+f23*(cov[3]*f20+cov[8]*f22+cov[5]*f23); | |
321 | fC30=cov[10]*f00; | |
322 | fC31=cov[11]; | |
323 | fC32=cov[10]*f20+cov[13]*f22+cov[12]*f23; | |
324 | fC33=cov[14]; | |
325 | fC40=t20; | |
326 | fC41=cov[7]; | |
327 | fC42=t22; | |
328 | fC43=cov[13]; | |
329 | fC44=cov[9]; | |
330 | ||
aecdf013 | 331 | |
332 | } | |
333 | ||
334 | ||
335 | AliITSTrackV1 &AliITSTrackV1::operator=(AliITSTrackV1 obj) { | |
336 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
337 | // assignement operator | |
338 | ||
e73fe7f3 | 339 | if (flistCluster) { |
340 | flistCluster->Delete(); | |
341 | delete flistCluster; | |
342 | } | |
aecdf013 | 343 | delete fClusterInTrack; |
344 | fClusterInTrack = new TMatrix(6,9); | |
345 | flistCluster = new TObjArray; | |
346 | flabel = obj.flabel; | |
347 | fTPCtrack = obj.fTPCtrack; | |
348 | fNumClustInTrack = obj.fNumClustInTrack; | |
349 | fChi2= obj.fChi2; | |
350 | fVertex=obj.fVertex; | |
351 | fErrorVertex=obj.fErrorVertex; | |
352 | fX0=obj.fX0; fX1=obj.fX1; fX2=obj.fX2; fX3=obj.fX3; fX4=obj.fX4; | |
353 | fLayer=obj.fLayer; | |
354 | frtrack=obj.frtrack; | |
355 | fDv=obj.fDv; | |
356 | fZv=obj.fZv; | |
357 | fsigmaDv=obj.fsigmaDv; | |
358 | fsigmaZv=obj.fsigmaZv; | |
359 | fd2=obj.fd2; | |
360 | ftgl2=obj.ftgl2; | |
70a9314b | 361 | fdtgl=obj.fdtgl; |
362 | fnoclust=obj.fnoclust; | |
aecdf013 | 363 | |
364 | fC00=obj.fC00; fC10=obj.fC10; fC11=obj.fC11; fC20=obj.fC20; fC21=obj.fC21; | |
365 | fC22=obj.fC22; fC30=obj.fC30; fC31=obj.fC31; fC32=obj.fC32; fC33=obj.fC33; | |
61231d74 | 366 | fC40=obj.fC40; fC41=obj.fC41; fC42=obj.fC42; fC43=obj.fC43; fC44=obj.fC44; |
367 | ||
def162f4 | 368 | fMass=obj.fMass; |
369 | fdEdx = obj.fdEdx; | |
370 | Int_t ia=0; | |
371 | for( ia=0; ia<4; ia++) fcor[ia]=obj.fcor[ia]; | |
372 | ||
aecdf013 | 373 | |
374 | *fClusterInTrack = *obj.fClusterInTrack; | |
375 | Int_t i; | |
376 | for(i=0; i<obj.flistCluster->GetSize(); i++) flistCluster->AddLast(obj.flistCluster->At(i)); | |
377 | ||
378 | return *this; | |
379 | ||
380 | } | |
381 | ||
382 | void AliITSTrackV1::PutCluster(Int_t layerc, TVector vecclust) { | |
383 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
384 | // put information for clusters | |
385 | ||
386 | (*fClusterInTrack)(layerc,0) = vecclust(0); | |
387 | (*fClusterInTrack)(layerc,1) = vecclust(1); | |
388 | (*fClusterInTrack)(layerc,2) = vecclust(2); | |
389 | (*fClusterInTrack)(layerc,3) = vecclust(3); | |
390 | (*fClusterInTrack)(layerc,4) = vecclust(4); | |
391 | (*fClusterInTrack)(layerc,5) = vecclust(5); | |
392 | (*fClusterInTrack)(layerc,6) = vecclust(6); | |
393 | (*fClusterInTrack)(layerc,7) = vecclust(7); | |
394 | (*fClusterInTrack)(layerc,8) = vecclust(8); | |
395 | ||
396 | } | |
397 | ||
398 | ||
399 | void AliITSTrackV1::GetClusters() { | |
400 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
401 | // prints the clusters belonging to the current track | |
402 | ||
403 | TMatrix a(*fClusterInTrack); | |
404 | TMatrix b(6,3); | |
405 | Int_t i; | |
406 | for(i=0;i<6; i++){ | |
407 | b(i,0)=a(i,6); b(i,1)=a(i,7); b(i,2)=a(i,8); | |
408 | } | |
409 | a.Print(); | |
410 | // b.Print(); | |
411 | ||
412 | } | |
413 | ||
414 | ||
415 | TVector AliITSTrackV1::GetLabTrack(Int_t lay) { | |
416 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
417 | // gets the label of the track | |
418 | ||
419 | TVector vecLabel(3); | |
420 | vecLabel(0)=( (Float_t) (*fClusterInTrack)(lay,6) ); | |
421 | vecLabel(1)=( (Float_t) (*fClusterInTrack)(lay,7) ); | |
422 | vecLabel(2)=( (Float_t) (*fClusterInTrack)(lay,8) ); | |
423 | return vecLabel; | |
424 | } | |
425 | ||
426 | void AliITSTrackV1::Search(TVector VecTotLabref, Long_t &labref, Int_t &freq){ | |
427 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
428 | // define label | |
429 | ||
430 | Int_t vecfreq[18]; | |
431 | ||
432 | Int_t i,j; | |
433 | for(i=0; i<18; i++) vecfreq[i]=0; | |
434 | ||
435 | for(i=0; i<18; i++) { | |
436 | for(j=0; j<18; j++) { | |
437 | // if(VecTotLabref(i) == 0.) VecTotLabref(i)=-3.; //commentato il 5-3-2001 | |
438 | if( (VecTotLabref(i)>=0.) && (VecTotLabref(i)==VecTotLabref(j)) ) vecfreq[i]++; | |
439 | } | |
440 | } | |
441 | Int_t imax=-1000; | |
442 | Long_t labdefault= (Long_t)1000000.; | |
443 | freq=0; | |
444 | for(i=0; i<18; i++) { | |
445 | if(vecfreq[i]>freq) {freq=vecfreq[i]; imax=i;} | |
446 | } | |
447 | if(imax<0) labref=labdefault; else labref=(Long_t) VecTotLabref(imax); | |
448 | } | |
449 | ||
450 | ||
451 | void AliITSTrackV1::Propagation(Double_t rk) { | |
452 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
453 | //Propagation of track | |
454 | Double_t duepi=2.*TMath::Pi(); | |
455 | Double_t rkm1=frtrack; | |
456 | //cout<<" rk e rkm1 dentro Propagation "<<rk<<" "<<rkm1<<"\n"; | |
457 | ||
458 | // | |
459 | Double_t aAk=ArgA(rk), aAkm1=ArgA(rkm1); | |
460 | Double_t ak=Arga(rk), akm1=Arga(rkm1); | |
461 | fX0+=TMath::ASin(aAk)-TMath::ASin(aAkm1); | |
462 | ||
463 | if(fX0>duepi) fX0-=duepi; | |
464 | if(fX0<0.) fX0+=duepi; | |
465 | ||
466 | Double_t tgl=fX3; | |
467 | Double_t c=fX4; | |
468 | Double_t d=fX2; | |
469 | Double_t cy=c/2; | |
470 | fX1+=tgl/cy*(TMath::ASin(ak)-TMath::ASin(akm1)); | |
471 | frtrack=rk; | |
472 | ||
473 | ||
474 | Double_t bk=ArgB(rk), bkm1=ArgB(rkm1); | |
475 | Double_t ck=ArgC(rk), ckm1=ArgC(rkm1); | |
476 | ||
477 | Double_t f02=ck/TMath::Sqrt(1.-aAk*aAk) - ckm1/TMath::Sqrt(1.-aAkm1*aAkm1); | |
478 | Double_t f04=bk/TMath::Sqrt(1.-aAk*aAk) - bkm1/TMath::Sqrt(1.-aAkm1*aAkm1); | |
479 | Double_t f12=tgl*d*(1./rk - 1./rkm1); | |
480 | Double_t f13=rk - rkm1; | |
481 | ||
482 | ||
483 | Double_t c00=fC00; | |
484 | Double_t c10=fC10; | |
485 | Double_t c11=fC11; | |
486 | Double_t c20=fC20; | |
487 | Double_t c21=fC21; | |
488 | Double_t c22=fC22; | |
489 | Double_t c30=fC30; | |
490 | Double_t c31=fC31; | |
491 | Double_t c32=fC32; | |
492 | Double_t c33=fC33; | |
493 | Double_t c40=fC40; | |
494 | Double_t c41=fC41; | |
495 | Double_t c42=fC42; | |
496 | Double_t c43=fC43; | |
497 | Double_t c44=fC44; | |
498 | ||
499 | Double_t r10=c10+c21*f02+c41*f04; | |
500 | Double_t r20=c20+c22*f02+c42*f04; | |
501 | Double_t r30=c30+c32*f02+c43*f04; | |
502 | Double_t r40=c40+c42*f02+c44*f04; | |
503 | Double_t r21=c21+c22*f12+c32*f13; | |
504 | Double_t r31=c31+c32*f12+c33*f13; | |
505 | Double_t r41=c41+c42*f12+c43*f13; | |
506 | ||
507 | fC00=c00+c20*f02+c40*f04+f02*r20+f04*r40; | |
508 | fC10=r10+f12*r20+f13*r30; | |
509 | fC11=c11+c21*f12+c31*f13+f12*r21+f13*r31; | |
510 | fC20=r20; | |
511 | fC21=r21; | |
512 | fC30=r30; | |
513 | fC31=r31; | |
514 | fC40=r40; | |
515 | fC41=r41; | |
516 | ||
517 | } | |
518 | ||
d0df5576 | 519 | void AliITSTrackV1::AddEL(Double_t signdE, Bool_t flagtot, Double_t mass) { |
aecdf013 | 520 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it |
521 | // add energy loss | |
d0df5576 | 522 | // AliITSRad *rl was passed as argument. Now rl has been commented out |
aecdf013 | 523 | |
61231d74 | 524 | mass=fMass; |
525 | ||
aecdf013 | 526 | TVector s(6); |
527 | s(0)=0.0026+0.00283; s(1)=0.018; s(2)=0.0094; s(3)=0.0095; s(4)=0.0091; s(5)=0.0087; | |
528 | //s(0)=0.0026+0.00283*2.; s(1)=0.018*2.; s(2)=0.0094; s(3)=0.0095; s(4)=0.0091; s(5)=0.0087; | |
529 | //0.00277 is added in the first layer to take into account the energy loss in the beam pipe | |
530 | ||
531 | //for(int k=0; k<6; k++) cout<<s(k)<<" "; cout<<"\n"; | |
532 | Int_t k; | |
70a9314b | 533 | //for(k=0; k<6; k++) s(k)=s(k)*1.6; //forint |
534 | for(k=0; k<6; k++) s(k)=s(k)*1.7; //forint | |
aecdf013 | 535 | |
536 | Double_t phi=fX0; | |
537 | ||
538 | if(phi<0.174 ) s(5)=s(5)+0.012; | |
a3894645 | 539 | if(phi>6.1 ) s(5)=s(5)+0.012; // to take into account rail |
540 | if(phi>2.96 && phi<3.31 ) s(5)=s(5)+0.012; | |
aecdf013 | 541 | |
70a9314b | 542 | /* |
aecdf013 | 543 | Double_t tgl=fX3; |
544 | Double_t theta=((TMath::Pi())/2.)-TMath::ATan(tgl); | |
545 | //phi*=180./TMath::Pi(); | |
546 | //theta*=180./TMath::Pi(); | |
547 | //Double_t rad90=(TMath::Pi())/2.; | |
548 | Double_t rad40=(TMath::Pi())*40./180.; | |
549 | Double_t rad100=(TMath::Pi())*100/180; | |
550 | Double_t rad360=(TMath::Pi())*2.; | |
551 | Int_t imax=rl->Getimax(); | |
552 | Int_t jmax=rl->Getjmax(); | |
553 | Int_t i=(Int_t) ( (theta-rad40)/rad100*imax); | |
554 | Int_t j=(Int_t) ( phi/rad360*jmax ); | |
555 | //Int_t i=(Int_t)( ((theta-((TMath::Pi())/4.))/((TMath::Pi())/2.))*imax ); | |
556 | //Int_t j=(Int_t)( (phi/((TMath::Pi())*2.))*jmax ); | |
557 | if(i<0) i=0; | |
558 | if(i>=imax) i=imax-1; | |
559 | if(j<0) j=0; | |
560 | if(j>=jmax) j=jmax-1; | |
70a9314b | 561 | |
aecdf013 | 562 | s(0) = 0.0028/TMath::Sin(theta)+( rl->GetRadMatrix1() )(i,j); // 0.0028 takes into account the beam pipe |
563 | s(1) = ( rl->GetRadMatrix2() )(i,j); | |
564 | s(2) = ( rl->GetRadMatrix3() )(i,j); | |
565 | s(3) = ( rl->GetRadMatrix4() )(i,j); | |
566 | s(4) = ( rl->GetRadMatrix5() )(i,j); | |
567 | s(5) = ( rl->GetRadMatrix6() )(i,j); | |
568 | ||
569 | ||
570 | */ | |
571 | ||
572 | //for(int k=0; k<6; k++) cout<<s(k)<<" "; getchar(); | |
573 | ||
574 | //if(phi>60) {cout<<" phi = "<<phi<<"\n"; getchar();} | |
575 | //if(theta<45 || theta>135) {cout<<" theta = "<<theta<<"\n"; getchar();} | |
576 | //cout<<" dentro AddEl: phi, theta = "<<phi<<" "<<theta<<"\n"; getchar(); | |
577 | ||
70a9314b | 578 | Double_t cl=1.+fX3*fX3; // cl=1/(cosl)**2 = 1 + (tgl)**2 |
aecdf013 | 579 | Double_t sqcl=TMath::Sqrt(cl); |
580 | Double_t pt=GetPt(); | |
581 | ||
582 | Double_t p2=pt*pt*cl; | |
583 | Double_t e=TMath::Sqrt(p2+mass*mass); | |
584 | Double_t beta2=p2/(p2+mass*mass); | |
585 | ||
586 | Double_t dE; | |
587 | if(flagtot) { | |
588 | Double_t stot=s(0)+s(1)+s(2)+s(3)+s(4)+s(5); | |
589 | dE=0.153/beta2*(log(5940*beta2/(1-beta2)) - beta2)*stot*21.82*sqcl; | |
590 | } else { | |
591 | dE=0.153/beta2*(log(5940*beta2/(1-beta2)) - beta2)*s(fLayer-1)*21.82*sqcl; | |
592 | } | |
593 | dE=signdE*dE/1000.; | |
594 | ||
595 | e+=dE; | |
596 | Double_t p=TMath::Sqrt(e*e-mass*mass); | |
597 | Double_t sign=1.; | |
598 | if(fX4 < 0.) sign=-1.; | |
599 | pt=sign*p/sqcl; | |
a3894645 | 600 | Double_t cc=(0.299792458*0.2*fFieldFactor)/(pt*100.); |
aecdf013 | 601 | fX4=cc; |
602 | ||
603 | } | |
604 | ||
605 | void AliITSTrackV1::Correct(Double_t rk) { | |
606 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
607 | // correct track to take into account real geometry detector | |
608 | ||
609 | Double_t duepi=2.*TMath::Pi(); | |
610 | Double_t rkm1=frtrack; | |
611 | Double_t aAk=ArgA(rk), aAkm1=ArgA(rkm1); | |
612 | Double_t ak=Arga(rk), akm1=Arga(rkm1); | |
613 | ||
614 | fX0+=TMath::ASin(aAk)-TMath::ASin(aAkm1); | |
615 | if(fX0>duepi) fX0-=duepi; | |
616 | if(fX0<0.) fX0+=duepi; | |
617 | ||
618 | Double_t tgl=fX3; | |
619 | Double_t c=fX4; | |
620 | Double_t cy=c/2; | |
621 | fX1+=tgl/cy*(TMath::ASin(ak)-TMath::ASin(akm1)); | |
622 | frtrack=rk; | |
623 | ||
624 | } | |
625 | ||
088e0b8d | 626 | void AliITSTrackV1::AddMS(Double_t mass) { |
aecdf013 | 627 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it |
628 | ////////// Modification of the covariance matrix to take into account multiple scattering /////////// | |
629 | ||
61231d74 | 630 | mass=fMass; |
631 | ||
aecdf013 | 632 | TVector s(6); |
633 | ||
634 | s(0)=0.0026+0.00283; s(1)=0.018; s(2)=0.0094; s(3)=0.0095; s(4)=0.0091; s(5)=0.0087; | |
635 | // s(0)=0.0026+0.00283*2.; s(1)=0.018*2.; s(2)=0.0094; s(3)=0.0095; s(4)=0.0091; s(5)=0.0087; | |
636 | //0.00277 is added in the first layer to take into account the energy loss in the beam pipe | |
637 | ||
638 | Int_t k; | |
70a9314b | 639 | //for(k=0; k<6; k++) s(k)=s(k)*1.6; // forint |
640 | for(k=0; k<6; k++) s(k)=s(k)*1.7; // forint | |
aecdf013 | 641 | |
642 | Double_t phi=fX0; | |
643 | if(phi<0.174 ) s(5)=s(5)+0.012; //aggiunta provvisoria | |
644 | if(phi>6.1 ) s(5)=s(5)+0.012; //aggiunta provvisoria | |
645 | if(phi>2.96 && phi< 3.31) s(5)=s(5)+0.012; //aggiunta provvisoria | |
70a9314b | 646 | |
aecdf013 | 647 | |
648 | Double_t tgl=fX3; | |
70a9314b | 649 | /* |
aecdf013 | 650 | Double_t theta=((TMath::Pi())/2.)-TMath::ATan(tgl); |
651 | Double_t rad40=(TMath::Pi())*40./180.; // rivedere | |
652 | Double_t rad100=(TMath::Pi())*100/180; | |
653 | Double_t rad360=(TMath::Pi())*2.; | |
654 | Int_t imax=rl->Getimax(); | |
655 | Int_t jmax=rl->Getjmax(); | |
656 | Int_t i=(Int_t) ( (theta-rad40)/rad100*imax); | |
657 | Int_t j=(Int_t) ( phi/rad360*jmax); | |
658 | ||
659 | if(i<0) i=0; | |
660 | if(i>=imax) i=imax-1; | |
661 | if(j<0) j=0; | |
662 | if(j>=jmax) j=jmax-1; | |
70a9314b | 663 | |
aecdf013 | 664 | s(0) = 0.0028/TMath::Sin(theta)+( rl->GetRadMatrix1() )(i,j); // 0.0028 takes into account the beam pipe |
665 | s(1) = ( rl->GetRadMatrix2() )(i,j); | |
666 | s(2) = ( rl->GetRadMatrix3() )(i,j); | |
667 | s(3) = ( rl->GetRadMatrix4() )(i,j); | |
668 | s(4) = ( rl->GetRadMatrix5() )(i,j); | |
669 | s(5) = ( rl->GetRadMatrix6() )(i,j); | |
670 | */ | |
70a9314b | 671 | //Double_t mass=0.1396; |
aecdf013 | 672 | Int_t layer=(Int_t)GetLayer(); |
673 | ||
674 | Double_t cosl=TMath::Cos(TMath::ATan(tgl)); | |
675 | Double_t d=fX2; | |
676 | Double_t c=fX4; | |
677 | Double_t cy=c/2.; | |
678 | Double_t q20=1./(cosl*cosl); | |
679 | Double_t q30=c*tgl; | |
680 | ||
681 | Double_t q40=cy*(frtrack*frtrack-d*d)/(1.+ 2.*cy*d); | |
682 | Double_t dd=d+cy*d*d-cy*frtrack*frtrack; | |
683 | Double_t dprova=frtrack*frtrack - dd*dd; | |
684 | Double_t q41=0.; | |
685 | if(dprova>0.) q41=-1./cosl*TMath::Sqrt(dprova)/(1.+ 2.*cy*d); | |
686 | ||
687 | Double_t p2=(GetPt()*GetPt())/(cosl*cosl); | |
688 | Double_t beta2=p2/(p2+mass*mass); | |
61231d74 | 689 | // Double_t theta2=14.1*14.1/(beta2*p2*1.e6)*(s(layer-1)/cosl); |
690 | Double_t theta2=14.1*14.1/(beta2*p2*1.e6)*(s(layer-1)/TMath::Abs(cosl)); | |
aecdf013 | 691 | |
692 | fC22+=theta2*(q40*q40+q41*q41); | |
693 | fC32+=theta2*q20*q40; | |
694 | fC33+=theta2*q20*q20; | |
695 | fC42+=theta2*q30*q40; | |
696 | fC43+=theta2*q30*q20; | |
697 | fC44+=theta2*q30*q30; | |
698 | ||
699 | } | |
088e0b8d | 700 | void AliITSTrackV1::PrimaryTrack() { |
aecdf013 | 701 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it |
702 | // calculation of part of covariance matrix for vertex constraint | |
703 | ||
704 | Double_t rlayer[6]; | |
705 | ||
706 | rlayer[0]=4.; rlayer[1]=7.; rlayer[2]=14.9; rlayer[3]=23.8; | |
707 | rlayer[4]=39.1; rlayer[5]=43.6; | |
708 | ||
709 | Double_t cy=fX4/2.; | |
710 | Double_t tgl=(fX1-fZv)*cy/TMath::ASin(cy*frtrack); | |
711 | Double_t frtrack=1.; | |
712 | fX0=0.; | |
713 | fX1=frtrack*tgl; | |
714 | fX2=fDv; | |
715 | fX3=tgl; | |
716 | ||
717 | fC00=fC10=fC11=fC20=fC21=fC22=fC30=fC31=fC32=fC33=fC40=fC41=fC42=fC43=0.; | |
718 | ||
d0df5576 | 719 | AddEL(1.,1); |
aecdf013 | 720 | fLayer=0; |
721 | Int_t i; | |
722 | for (i=0; i<6; i++) { | |
723 | Propagation(rlayer[i]); | |
724 | fLayer++; | |
725 | fd2(i)=fC22; | |
726 | ftgl2(i)=fC33; | |
727 | fdtgl(i)=fC32; | |
088e0b8d | 728 | AddMS(); |
d0df5576 | 729 | AddEL(-1,0); |
aecdf013 | 730 | } |
731 | } | |
732 | ||
733 | ||
734 | Int_t AliITSTrackV1::DoNotCross(Double_t rk) const{ | |
735 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
736 | // determine if the track cross a layer | |
737 | ||
738 | Double_t c=fX4; | |
739 | Double_t d=fX2; | |
740 | Double_t cy=c/2.; | |
741 | return (TMath::Abs((cy*rk+(1.+cy*d)*d/rk)/(1.+2.*cy*d))>=1.)?1:0; | |
742 | } | |
743 | ||
744 | ||
745 | Double_t AliITSTrackV1::ArgA(Double_t rk) const { | |
746 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
747 | // quantity usefull in Propagation | |
748 | Double_t c=fX4; | |
749 | Double_t d=fX2; | |
750 | Double_t cy=c/2.; | |
751 | Double_t arg=(cy*rk + (1 + cy*d)*d/rk)/(1.+ 2.*cy*d); | |
752 | if (TMath::Abs(arg) < 1.) return arg; | |
753 | //cout<<"class AliITSTrack: ArgA out of range !\n";/* getchar();*/ | |
754 | return (arg>0) ? 0.99999999999 : -0.9999999999; | |
755 | } | |
756 | ||
757 | Double_t AliITSTrackV1::Arga(Double_t rk) const { | |
758 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
759 | // quantity usefull in Propagation | |
760 | Double_t c=fX4; | |
761 | Double_t d=fX2; | |
762 | Double_t cy=c/2.; | |
763 | Double_t arg=(rk*rk - d*d)/(1.+ 2.*cy*d); | |
764 | if (arg<0.) {/*cout<<"class AliITSTrack: Arga out of range !\n";*/ arg=0.;} | |
765 | return cy*TMath::Sqrt(arg); | |
766 | } | |
767 | ||
768 | Double_t AliITSTrackV1::ArgB(Double_t rk) const { | |
769 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
770 | // quantity usefull in Propagation | |
771 | Double_t c=fX4; | |
772 | Double_t d=fX2; | |
773 | Double_t cy=c/2.; | |
774 | return (rk*rk - d*d)/(rk*(1.+ 2.*cy*d)*(1.+ 2.*cy*d)); | |
775 | } | |
776 | ||
777 | Double_t AliITSTrackV1::ArgC(Double_t rk) const { | |
778 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
779 | // quantity usefull in Propagation | |
780 | Double_t c=fX4; | |
781 | Double_t d=fX2; | |
782 | Double_t cy=c/2.; | |
783 | return (1./rk - 2.*cy*ArgA(rk)/(1.+ 2.*cy*d)); | |
784 | } | |
785 | ||
786 | ||
70a9314b | 787 | Double_t AliITSTrackV1::GetPredChi2(Double_t m[2], Double_t sigma[2] ) const { |
788 | //Origin A. Badala' and G.S. Pappalardo: e-mail Angela.Badala@ct.infn.it, Giuseppe.S.Pappalardo@ct.infn.it | |
789 | // This function calculates a predicted chi2 increment. | |
64ab0d55 | 790 | |
70a9314b | 791 | Double_t r00=sigma[0], r01=0., r11=sigma[1]; |
792 | r00+=fC00; r01+=fC10; r11+=fC11; | |
793 | Double_t det=r00*r11-r01*r01; | |
794 | if(TMath::Abs(det) < 1.e-15) {cout<<" Problems on matrix in GetPredChi2 "<<det<<"\n"; | |
795 | return 1e10;} | |
796 | Double_t tmp=r00; r00=r11; r11=tmp; r01=-r01; | |
797 | Double_t dphi=m[0]-fX0; | |
798 | Double_t dz=m[1]-fX1; | |
799 | Double_t chi2 = (dphi*r00*dphi +2.*r01*dphi*dz + dz*r11*dz)/det; | |
800 | return chi2; | |
801 | ||
70a9314b | 802 | } |