]>
Commit | Line | Data |
---|---|---|
1e9e3c7c | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | ||
16 | ||
17 | /////////////////////////////////////////////////////////////////////////////// | |
18 | // // | |
19 | // This class is a container class for the laser beam positions of // | |
20 | // the TPC laser system (ALICE-INT-2002-022 v.1 ). // | |
21 | // The system consits of 6 Laser Rods, each contains four mirror bundels // | |
22 | // on each side of the TPC. Each bundle has seven mirrors. // | |
23 | // // | |
24 | // The TPC side 0 corresponds to the "Shaft Side (A)", side 1 corresponds // | |
25 | // to the "Muon Side (C)". | |
26 | // The laser rods are counted counter clockwise starting with the one // | |
27 | // with the smalles phi angle. // | |
28 | // The mirror bundles in one rod for each side are counted starting from // | |
29 | // form the greatest z value to the smalles. // | |
30 | // The beams in each bundel are counted counter clockwise. Having all beams // | |
31 | // pointing downward, the first beam will be the leftmost. // | |
32 | // // | |
33 | /////////////////////////////////////////////////////////////////////////////// | |
34 | ||
35 | /* | |
36 | Create File with design positions | |
37 | ||
38 | .L AliTPCLaserTrack.cxx+ | |
39 | AliTPCLaserTracks ltracks | |
40 | ltracks.WriteTreeDesignData() | |
41 | TFile f("LaserTracksDesing.root"); | |
42 | TTree * tree =(TTree*)f.Get("LaserTracks"); | |
43 | ||
44 | */ | |
45 | ||
11c5d692 | 46 | #include <Riostream.h> |
1e9e3c7c | 47 | #include <TString.h> |
48 | #include <TPolyLine3D.h> | |
49 | #include <TMath.h> | |
50 | #include <TTree.h> | |
51 | #include <TFile.h> | |
52 | #include <TEventList.h> | |
53 | #include <TVector2.h> | |
54 | #include <TVector3.h> | |
55 | #include <TROOT.h> | |
56 | ||
57 | #include <TGraph.h> | |
58 | ||
59 | ||
60 | #include "AliTPCLaserTracks.h" | |
61 | ||
62 | //////////////////////////////////////////////////////////////////////// | |
63 | // Class AliTPCLaserTracks | |
64 | //////////////////////////////////////////////////////////////////////// | |
65 | ||
a11596ad | 66 | using std::cout; |
67 | using std::endl; | |
1e9e3c7c | 68 | ClassImp(AliTPCLaserTracks) |
69 | ||
e046d791 | 70 | AliTPCLaserTracks::AliTPCLaserTracks():TObject(), |
1e9e3c7c | 71 | fId(-1), |
72 | fSide(-1), | |
73 | fRod(-1), | |
74 | fBundle(-1), | |
75 | fBeam(-1), | |
e046d791 | 76 | fX(0.), |
77 | fY(0.), | |
78 | fZ(0.), | |
79 | fTime(0.), | |
80 | fPhi(0.), | |
81 | fTheta(0.), | |
1e9e3c7c | 82 | fMaxSize(0), |
83 | fNpoints(0), | |
84 | fXarr(0x0), | |
85 | fYarr(0x0), | |
86 | fZarr(0x0) | |
87 | ||
88 | { | |
89 | // | |
90 | // AliTPCLaserTracks default constructor | |
91 | // | |
92 | } | |
93 | ||
94 | //_______________________________________________________________________ | |
e046d791 | 95 | AliTPCLaserTracks::AliTPCLaserTracks(Int_t npoints):TObject(), |
1e9e3c7c | 96 | fId(-1), |
97 | fSide(-1), | |
98 | fRod(-1), | |
99 | fBundle(-1), | |
100 | fBeam(-1), | |
e046d791 | 101 | fX(0.), |
102 | fY(0.), | |
103 | fZ(0.), | |
104 | fTime(0.), | |
105 | fPhi(0.), | |
106 | fTheta(0.), | |
1e9e3c7c | 107 | fMaxSize(0), |
108 | fNpoints(0), | |
109 | fXarr(0x0), | |
110 | fYarr(0x0), | |
111 | fZarr(0x0) | |
112 | ||
113 | { | |
114 | // | |
115 | // AliTPCLaserTracks constructor to initialise array of points | |
116 | // | |
117 | fNpoints = npoints; | |
118 | InitPoints(); | |
119 | } | |
120 | ||
121 | //_______________________________________________________________________ | |
122 | Double_t AliTPCLaserTracks::FindBeamLength(TVector3 vF, TVector3 vP) | |
123 | { | |
124 | // | |
125 | // Find distance between mirror and the intersection between | |
126 | // inner and outer field cage respectively | |
127 | // | |
128 | // use the pq formula to find the intersection point between | |
129 | // the beam and the inner and outer fieldcage cylinders | |
130 | // The formulae solved are | |
131 | // | |
132 | // line = zylinder | |
133 | // xPoint = vF.X() + n*vP.X() = r*cos(phi) | |
134 | // yPoint = vF.Y() + n*vP.Y() = r*sin(phi) | |
135 | // zPoint = vF.Y() + n*vP.Y() | |
136 | // | |
137 | // get n from the first two equations, calculate x,y,zPoint | |
138 | // | |
139 | // vF is the mirror position and vP the beam direction | |
140 | Double_t r[2]; //smalles r[0] and largest r[1] pad radius | |
141 | r[0] = 80.0; //smalles pad radius | |
142 | r[1] = 260.0; //largest pad radius | |
143 | ||
144 | Double_t fxpxfypy = vF.X()*vP.X()+vF.Y()*vP.Y(); | |
145 | Double_t px2py2 = vP.X()*vP.X()+vP.Y()*vP.Y(); | |
146 | ||
147 | for (Int_t i=0; i<2; i++){ | |
148 | Double_t rad = (fxpxfypy/px2py2)*(fxpxfypy/px2py2)- | |
149 | (vF.X()*vF.X()+vF.Y()*vF.Y()-r[i]*r[i])/px2py2; | |
150 | ||
151 | if ( rad >= 0 ){ | |
152 | Double_t n1 = -(fxpxfypy)/px2py2+TMath::Sqrt(rad); | |
153 | TVector3 vI1(vF.X()+n1*vP.X(), | |
154 | vF.Y()+n1*vP.Y(), | |
155 | vF.Z()+n1*vP.Z()); | |
156 | ||
157 | Double_t n2 = -(fxpxfypy)/px2py2-TMath::Sqrt(rad); | |
158 | TVector3 vI2(vF.X()+n2*vP.X(), | |
159 | vF.Y()+n2*vP.Y(), | |
160 | vF.Z()+n2*vP.Z()); | |
161 | ||
162 | ||
163 | //if we cross two boarders on our way return the closer boarder | |
a6e0ebfe | 164 | if ( (n1>0) && (n2>0) ) { |
1e9e3c7c | 165 | if ( (vF-vI1).Mag() <= (vF-vI2).Mag() ) |
166 | return (vF-vI1).Mag(); | |
167 | else | |
a6e0ebfe | 168 | return (vF-vI2).Mag(); |
169 | } | |
1e9e3c7c | 170 | |
171 | if ( n1>0 ) | |
172 | return (vF-vI1).Mag(); | |
173 | ||
174 | if ( n2>0 ) | |
175 | return (vF-vI2).Mag(); | |
176 | ||
177 | } | |
178 | } | |
179 | ||
180 | return 3.4e38; //not found!! | |
181 | } | |
182 | ||
183 | //_______________________________________________________________________ | |
184 | void AliTPCLaserTracks::WriteTreeDesignData() | |
185 | { | |
186 | // | |
187 | // Write a tree with the design data of the laser track positions | |
188 | // | |
189 | ||
190 | TFile *f = TFile::Open("LaserTracksDesing.root","recreate"); | |
191 | ||
192 | AliTPCLaserTracks *ltp = new AliTPCLaserTracks(2); | |
193 | ||
194 | TTree *t = new TTree("LaserTracks","LaserTracks"); | |
195 | t->Branch("LaserTracks","AliTPCLaserTracks",<p); | |
196 | t->AutoSave(); | |
197 | ||
198 | Double_t phiBeam[7] = {-31.8,-16.,-9.2,2.5,9.2,16.,31.8}; | |
199 | Double_t phiRod[6] = {40.,100.,160.,220.,280.,340.}; //-20. for the muon side | |
200 | // Double_t zBundleCorse[2][4] = {{10,79,163,241},{13,85,169,247}}; | |
201 | Double_t zBundleCorse[2][4] = {{241.,163.,79.,10.},{247.,169.,85.,13.}}; | |
202 | Double_t zBeamFine[7] = {1.45,1.3,1.15,1.3,1.15,1.3,1.45}; | |
203 | ||
204 | Int_t id=0; | |
205 | //loop over TPC side -- 0:A (Shaft) side -- 1:C (Muon) side | |
206 | for (Int_t side=0; side<2; side++){ | |
207 | //loop over laser rods -- counterclockwise | |
208 | for (Int_t rod=0; rod<6; rod++){ | |
209 | //center of the rod | |
210 | TVector2 vRod; | |
211 | ||
212 | Double_t phiRod2 = phiRod[rod]-side*20; | |
213 | vRod.SetMagPhi(254.25, //center of the rod at 254.25cm | |
214 | TMath::DegToRad()* | |
215 | (phiRod2) //-20 deg on C-Side | |
216 | ); | |
217 | ||
218 | //loop over bundle -- counted from large z to small z | |
219 | for (Int_t bundle=0; bundle<4; bundle++){ | |
220 | //center of the bundle; not yet rotated | |
221 | Int_t bundleS = bundle; | |
222 | // if ( side == 1 ) bundleS = 4-bundle; | |
223 | if ( side == 1 ) bundleS = 3-bundle; | |
224 | ||
225 | TVector2 vBundle; | |
226 | vBundle.SetMagPhi(.65, | |
227 | TMath::DegToRad()* | |
228 | //? TMath::Power(-1,side)* | |
229 | (phiRod2+180.-90.*bundleS) | |
230 | ); | |
231 | ||
232 | //loop over beam | |
233 | Int_t i=0; | |
234 | for (Int_t beam=0; beam<7; beam++){ | |
235 | TVector2 vBeam; | |
236 | if ( beam == 3 ) | |
237 | vBeam.Set(0.,0.); | |
238 | else{ | |
239 | vBeam.SetMagPhi(1.,TMath::DegToRad()*(phiRod2+i*60)); | |
240 | i++; | |
241 | } | |
242 | ||
243 | TVector2 xyMirror = vRod+vBundle+vBeam; | |
244 | Double_t zMirror = (zBundleCorse[rod%2][bundleS]+zBeamFine[beam])*TMath::Power(-1,side); | |
245 | TVector3 v3Mirror(xyMirror.X(),xyMirror.Y(),zMirror); | |
246 | ||
247 | Double_t phi = TMath::DegToRad()*(phiRod2+180+phiBeam[beam]*TMath::Power(-1,side)); | |
248 | Double_t theta = TMath::DegToRad()*90; | |
249 | ||
250 | TVector3 v3Beam; | |
251 | v3Beam.SetMagThetaPhi(1,theta,phi); //Direction Vector | |
252 | v3Beam.SetMagThetaPhi(FindBeamLength(v3Mirror,v3Beam), theta, phi); | |
253 | ||
254 | ||
255 | ||
256 | ltp->SetId(id); | |
257 | ltp->SetSide(side); | |
258 | ltp->SetRod(rod); | |
259 | ltp->SetBundle(bundleS); | |
260 | ltp->SetBeam(beam); | |
261 | ||
262 | ltp->SetX(xyMirror.X()); | |
263 | ltp->SetY(xyMirror.Y()); | |
264 | ltp->SetZ(zMirror); | |
265 | ||
266 | ltp->SetPhi(phi); | |
267 | ltp->SetTheta(theta); | |
268 | ||
269 | // ltp->InitPoints(2); | |
270 | ltp->SetPoint(0,xyMirror.X(),xyMirror.Y(),zMirror); | |
271 | ltp->SetPoint(1,xyMirror.X()+v3Beam.X(),xyMirror.Y()+v3Beam.Y(),zMirror+v3Beam.Z()); | |
272 | ||
273 | cout<< "Id: " << id | |
274 | << " Side: " << side | |
275 | << " Rod: " << rod | |
276 | << " Bundle: " << bundleS | |
277 | << " Beam: " << beam | |
278 | << endl; | |
279 | ||
280 | ||
281 | t->Fill(); | |
282 | //delete line; | |
283 | id++; | |
284 | // cout << "Filled!!!" << endl; | |
285 | } | |
286 | } | |
287 | } | |
288 | } | |
289 | ||
290 | t->Write(); | |
291 | delete f; | |
292 | // delete t; | |
293 | // delete ltp; | |
294 | // delete line; | |
295 | } | |
296 | ||
297 | //_______________________________________________________________________ | |
298 | TPolyLine3D* AliTPCLaserTracks::GetLine() | |
299 | { | |
e19f5a2d | 300 | // |
301 | // Make a polilyne object oout of the points | |
302 | // | |
1e9e3c7c | 303 | if ( fNpoints ) return new TPolyLine3D(fNpoints,fXarr,fYarr,fZarr); |
304 | ||
305 | return 0x0; | |
306 | } | |
307 | ||
308 | //_______________________________________________________________________ | |
f78da5ae | 309 | TObjArray* AliTPCLaserTracks::GetLines(const Char_t* file, const Char_t *cuts) |
1e9e3c7c | 310 | { |
e19f5a2d | 311 | // |
312 | // Read the input files with the laser track | |
313 | // Make a array of polylines for visualization | |
314 | ||
1e9e3c7c | 315 | TObjArray *array = new TObjArray; |
316 | ||
317 | TFile *f = TFile::Open(file,"read"); | |
318 | TTree *tree = (TTree*)f->Get("LaserTracks"); | |
319 | ||
320 | AliTPCLaserTracks *ltp = new AliTPCLaserTracks(); | |
321 | // TEventList *evList = new TEventList("evList"); | |
322 | TEventList evList("evList"); | |
323 | ||
324 | tree->SetBranchAddress("LaserTracks",<p); | |
325 | ||
326 | tree->Draw(">>evList",cuts,"goff"); | |
327 | ||
328 | // cout << "N: " << evList.GetN() << endl; | |
329 | gROOT->cd(); | |
330 | for (Int_t ev = 0; ev < evList.GetN(); ev++){ | |
331 | // cout << ev << endl; | |
332 | tree->GetEntry( evList.GetEntry(ev) ); | |
333 | array->Add(ltp->GetLine()); | |
334 | } | |
335 | // cout << "delte f"<< endl; | |
336 | // delete f; | |
337 | ||
338 | // cout << "evlist" << endl; | |
339 | ||
340 | return array; | |
341 | } | |
342 | ||
343 | //_______________________________________________________________________ | |
344 | void AliTPCLaserTracks::InitPoints() | |
345 | { | |
346 | // | |
347 | // Init point arrays | |
348 | // | |
349 | ||
350 | fMaxSize = fNpoints; | |
351 | fXarr = new Double_t[fMaxSize]; | |
352 | fYarr = new Double_t[fMaxSize]; | |
353 | fZarr = new Double_t[fMaxSize]; | |
354 | } | |
355 | ||
356 | //_______________________________________________________________________ | |
357 | Int_t AliTPCLaserTracks::SetPoint(Int_t point, Double_t x, Double_t y, Double_t z) | |
358 | { | |
359 | // | |
360 | // Set point to point arrays | |
361 | // | |
362 | ||
363 | if ( !fXarr || !fYarr || !fZarr ) return 1; | |
364 | if ( point > fNpoints-1 ) return 1; | |
365 | ||
366 | fXarr[point] = x; | |
367 | fYarr[point] = y; | |
368 | fZarr[point] = z; | |
369 | return 0; | |
370 | } | |
371 | ||
372 | //_______________________________________________________________________ | |
373 | Int_t AliTPCLaserTracks::FindMirror(Char_t *file, Double_t x, Double_t y, Double_t z, Double_t phi) | |
374 | { | |
375 | // | |
376 | // return the id of the mirror in 'file' that maches best the given parameters | |
377 | // | |
378 | ||
379 | TFile *f = TFile::Open(file,"read"); | |
380 | TTree *tree = (TTree*)f->Get("LaserTracks"); | |
381 | ||
382 | AliTPCLaserTracks *ltp = new AliTPCLaserTracks(); | |
383 | TEventList evList("evList"); | |
384 | ||
385 | tree->SetBranchAddress("LaserTracks",<p); | |
386 | ||
387 | TString s; | |
388 | s = "abs(fX-"; s+= x; | |
389 | s+= ")<3&&abs(fY-"; s+=y; | |
390 | s+= ")<3&&abs(fZ-"; s+= z; | |
391 | s+= ")<1.5"; | |
392 | // s+= "&&((abs(fPhi-";s+= phi; | |
393 | // s+= ")<.06)||(abs(fPhi-";s+= (phi-TMath::DegToRad()*180); | |
394 | // s+= ")<.06))"; | |
395 | cout << s.Data() << endl; | |
396 | ||
397 | tree->Draw(">>evList",s.Data()); | |
398 | ||
399 | Double_t dphiMin=TMath::Pi(); | |
400 | Int_t id=-1; | |
401 | ||
402 | cout << "nev: " << evList.GetN() << endl; | |
403 | for (Int_t i=0; i<evList.GetN(); i++){ | |
404 | tree->GetEntry( evList.GetEntry(i) ); | |
405 | Double_t dphi = TMath::Abs(ltp->GetPhi() - phi); | |
406 | if ( dphi > TMath::DegToRad()*180 ) dphi-=TMath::DegToRad()*180; | |
407 | if ( dphi<dphiMin ) { | |
408 | dphiMin = dphi; | |
409 | id = ltp->GetId(); | |
410 | } | |
411 | } | |
1e9e3c7c | 412 | delete f; |
9389f9a4 | 413 | return id; |
1e9e3c7c | 414 | } |
415 | ||
416 | //_______________________________________________________________________ | |
417 | AliTPCLaserTracks::~AliTPCLaserTracks() | |
418 | { | |
419 | // | |
420 | // standard destructor | |
421 | // | |
422 | ||
423 | // if ( fP ) delete fP; | |
e19f5a2d | 424 | if ( fXarr ) delete [] fXarr; |
425 | if ( fYarr ) delete [] fYarr; | |
426 | if ( fZarr ) delete [] fZarr; | |
1e9e3c7c | 427 | } |