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0116859c | 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 | // AliTPCCorrection class // | |
19 | // // | |
20 | // This class provides a general framework to deal with space point // | |
21 | // distortions. An correction class which inherits from here is for example // | |
22 | // AliTPCExBBShape or AliTPCExBTwist // | |
23 | // // | |
24 | // General functions are (for example): // | |
25 | // CorrectPoint(x,roc) where x is the vector of inital positions in // | |
26 | // cartesian coordinates and roc represents the Read Out chamber number // | |
27 | // according to the offline naming convention. The vector x is overwritten // | |
28 | // with the corrected coordinates. // | |
29 | // // | |
30 | // An alternative usage would be CorrectPoint(x,roc,dx), which leaves the // | |
31 | // vector x untouched, put returns the distortions via the vector dx // | |
32 | // // | |
33 | // The class allows "effective Omega Tau" corrections to be shifted to the // | |
34 | // single distortion classes. // | |
35 | // // | |
36 | // Note: This class is normally used via the class AliTPCComposedCorrection // | |
37 | // // | |
38 | // date: 27/04/2010 // | |
39 | // Authors: Magnus Mager, Stefan Rossegger, Jim Thomas // | |
40 | //////////////////////////////////////////////////////////////////////////////// | |
be67055b | 41 | #include "Riostream.h" |
0116859c | 42 | |
43 | #include <TH2F.h> | |
44 | #include <TMath.h> | |
45 | #include <TROOT.h> | |
cf5b0aa0 | 46 | #include <TTreeStream.h> |
ffab0c37 | 47 | #include <TTree.h> |
48 | #include <TFile.h> | |
e527a1b9 | 49 | #include <TTimeStamp.h> |
ffab0c37 | 50 | #include <AliCDBStorage.h> |
51 | #include <AliCDBId.h> | |
52 | #include <AliCDBMetaData.h> | |
7f4cb119 | 53 | #include "TVectorD.h" |
54 | ||
1b923461 | 55 | |
56 | #include "TRandom.h" | |
57 | #include "AliExternalTrackParam.h" | |
58 | #include "AliTrackPointArray.h" | |
59 | #include "TDatabasePDG.h" | |
60 | #include "AliTrackerBase.h" | |
61 | #include "AliTPCROC.h" | |
62 | #include "THnSparse.h" | |
63 | ||
7f4cb119 | 64 | #include "TRandom.h" |
65 | #include "AliTPCTransform.h" | |
66 | #include "AliTPCcalibDB.h" | |
67 | #include "AliTPCExB.h" | |
68 | #include "AliTPCCorrection.h" | |
69 | #include "AliTPCRecoParam.h" | |
cf5b0aa0 | 70 | |
71 | #include "AliExternalTrackParam.h" | |
72 | #include "AliTrackPointArray.h" | |
73 | #include "TDatabasePDG.h" | |
74 | #include "AliTrackerBase.h" | |
75 | #include "AliTPCROC.h" | |
8b63d99c | 76 | #include "THnSparse.h" |
1b923461 | 77 | |
7f4cb119 | 78 | #include "AliTPCLaserTrack.h" |
ca58ed4e | 79 | #include "AliESDVertex.h" |
80 | #include "AliVertexerTracks.h" | |
81 | #include "TDatabasePDG.h" | |
82 | #include "TF1.h" | |
0116859c | 83 | |
84 | #include "AliTPCCorrection.h" | |
1b923461 | 85 | #include "AliLog.h" |
0116859c | 86 | |
cf5b0aa0 | 87 | ClassImp(AliTPCCorrection) |
88 | ||
f1817479 | 89 | |
90 | TObjArray *AliTPCCorrection::fgVisualCorrection=0; | |
91 | // instance of correction for visualization | |
92 | ||
93 | ||
0116859c | 94 | // FIXME: the following values should come from the database |
b1f0a2a5 | 95 | const Double_t AliTPCCorrection::fgkTPCZ0 =249.7; // nominal gating grid position |
0116859c | 96 | const Double_t AliTPCCorrection::fgkIFCRadius= 83.06; // Mean Radius of the Inner Field Cage ( 82.43 min, 83.70 max) (cm) |
97 | const Double_t AliTPCCorrection::fgkOFCRadius=254.5; // Mean Radius of the Outer Field Cage (252.55 min, 256.45 max) (cm) | |
98 | const Double_t AliTPCCorrection::fgkZOffSet = 0.2; // Offset from CE: calculate all distortions closer to CE as if at this point | |
99 | const Double_t AliTPCCorrection::fgkCathodeV =-100000.0; // Cathode Voltage (volts) | |
100 | const Double_t AliTPCCorrection::fgkGG =-70.0; // Gating Grid voltage (volts) | |
101 | ||
102 | ||
f1817479 | 103 | |
0116859c | 104 | // FIXME: List of interpolation points (course grid in the middle, fine grid on the borders) |
105 | const Double_t AliTPCCorrection::fgkRList[AliTPCCorrection::kNR] = { | |
106 | 84.0, 84.5, 85.0, 85.5, 86.0, 87.0, 88.0, | |
107 | 90.0, 92.0, 94.0, 96.0, 98.0, 100.0, 102.0, 104.0, 106.0, 108.0, | |
108 | 110.0, 112.0, 114.0, 116.0, 118.0, 120.0, 122.0, 124.0, 126.0, 128.0, | |
109 | 130.0, 132.0, 134.0, 136.0, 138.0, 140.0, 142.0, 144.0, 146.0, 148.0, | |
110 | 150.0, 152.0, 154.0, 156.0, 158.0, 160.0, 162.0, 164.0, 166.0, 168.0, | |
111 | 170.0, 172.0, 174.0, 176.0, 178.0, 180.0, 182.0, 184.0, 186.0, 188.0, | |
112 | 190.0, 192.0, 194.0, 196.0, 198.0, 200.0, 202.0, 204.0, 206.0, 208.0, | |
113 | 210.0, 212.0, 214.0, 216.0, 218.0, 220.0, 222.0, 224.0, 226.0, 228.0, | |
114 | 230.0, 232.0, 234.0, 236.0, 238.0, 240.0, 242.0, 244.0, 246.0, 248.0, | |
115 | 249.0, 249.5, 250.0, 251.5, 252.0 } ; | |
116 | ||
117 | const Double_t AliTPCCorrection::fgkZList[AliTPCCorrection::kNZ] = { | |
118 | -249.5, -249.0, -248.5, -248.0, -247.0, -246.0, -245.0, -243.0, -242.0, -241.0, | |
119 | -240.0, -238.0, -236.0, -234.0, -232.0, -230.0, -228.0, -226.0, -224.0, -222.0, | |
120 | -220.0, -218.0, -216.0, -214.0, -212.0, -210.0, -208.0, -206.0, -204.0, -202.0, | |
121 | -200.0, -198.0, -196.0, -194.0, -192.0, -190.0, -188.0, -186.0, -184.0, -182.0, | |
122 | -180.0, -178.0, -176.0, -174.0, -172.0, -170.0, -168.0, -166.0, -164.0, -162.0, | |
123 | -160.0, -158.0, -156.0, -154.0, -152.0, -150.0, -148.0, -146.0, -144.0, -142.0, | |
124 | -140.0, -138.0, -136.0, -134.0, -132.0, -130.0, -128.0, -126.0, -124.0, -122.0, | |
125 | -120.0, -118.0, -116.0, -114.0, -112.0, -110.0, -108.0, -106.0, -104.0, -102.0, | |
126 | -100.0, -98.0, -96.0, -94.0, -92.0, -90.0, -88.0, -86.0, -84.0, -82.0, | |
127 | -80.0, -78.0, -76.0, -74.0, -72.0, -70.0, -68.0, -66.0, -64.0, -62.0, | |
128 | -60.0, -58.0, -56.0, -54.0, -52.0, -50.0, -48.0, -46.0, -44.0, -42.0, | |
129 | -40.0, -38.0, -36.0, -34.0, -32.0, -30.0, -28.0, -26.0, -24.0, -22.0, | |
130 | -20.0, -18.0, -16.0, -14.0, -12.0, -10.0, -8.0, -6.0, -4.0, -2.0, | |
131 | -1.0, -0.5, -0.2, -0.1, -0.05, 0.05, 0.1, 0.2, 0.5, 1.0, | |
132 | 2.0, 4.0, 6.0, 8.0, 10.0, 12.0, 14.0, 16.0, 18.0, 20.0, | |
133 | 22.0, 24.0, 26.0, 28.0, 30.0, 32.0, 34.0, 36.0, 38.0, 40.0, | |
134 | 42.0, 44.0, 46.0, 48.0, 50.0, 52.0, 54.0, 56.0, 58.0, 60.0, | |
135 | 62.0, 64.0, 66.0, 68.0, 70.0, 72.0, 74.0, 76.0, 78.0, 80.0, | |
136 | 82.0, 84.0, 86.0, 88.0, 90.0, 92.0, 94.0, 96.0, 98.0, 100.0, | |
137 | 102.0, 104.0, 106.0, 108.0, 110.0, 112.0, 114.0, 116.0, 118.0, 120.0, | |
138 | 122.0, 124.0, 126.0, 128.0, 130.0, 132.0, 134.0, 136.0, 138.0, 140.0, | |
139 | 142.0, 144.0, 146.0, 148.0, 150.0, 152.0, 154.0, 156.0, 158.0, 160.0, | |
140 | 162.0, 164.0, 166.0, 168.0, 170.0, 172.0, 174.0, 176.0, 178.0, 180.0, | |
141 | 182.0, 184.0, 186.0, 188.0, 190.0, 192.0, 194.0, 196.0, 198.0, 200.0, | |
142 | 202.0, 204.0, 206.0, 208.0, 210.0, 212.0, 214.0, 216.0, 218.0, 220.0, | |
143 | 222.0, 224.0, 226.0, 228.0, 230.0, 232.0, 234.0, 236.0, 238.0, 240.0, | |
144 | 242.0, 243.0, 244.0, 245.0, 246.0, 247.0, 248.0, 248.5, 249.0, 249.5 } ; | |
145 | ||
146 | ||
147 | ||
148 | AliTPCCorrection::AliTPCCorrection() | |
534fd34a | 149 | : TNamed("correction_unity","unity"),fJLow(0),fKLow(0), fT1(1), fT2(1) |
0116859c | 150 | { |
151 | // | |
152 | // default constructor | |
153 | // | |
f1817479 | 154 | if (!fgVisualCorrection) fgVisualCorrection= new TObjArray; |
0116859c | 155 | } |
156 | ||
157 | AliTPCCorrection::AliTPCCorrection(const char *name,const char *title) | |
534fd34a | 158 | : TNamed(name,title),fJLow(0),fKLow(0), fT1(1), fT2(1) |
0116859c | 159 | { |
160 | // | |
161 | // default constructor, that set the name and title | |
162 | // | |
f1817479 | 163 | if (!fgVisualCorrection) fgVisualCorrection= new TObjArray; |
0116859c | 164 | } |
165 | ||
166 | AliTPCCorrection::~AliTPCCorrection() { | |
167 | // | |
168 | // virtual destructor | |
169 | // | |
170 | } | |
171 | ||
172 | void AliTPCCorrection::CorrectPoint(Float_t x[],const Short_t roc) { | |
173 | // | |
174 | // Corrects the initial coordinates x (cartesian coordinates) | |
175 | // according to the given effect (inherited classes) | |
176 | // roc represents the TPC read out chamber (offline numbering convention) | |
177 | // | |
178 | Float_t dx[3]; | |
179 | GetCorrection(x,roc,dx); | |
180 | for (Int_t j=0;j<3;++j) x[j]+=dx[j]; | |
181 | } | |
182 | ||
183 | void AliTPCCorrection::CorrectPoint(const Float_t x[],const Short_t roc,Float_t xp[]) { | |
184 | // | |
185 | // Corrects the initial coordinates x (cartesian coordinates) and stores the new | |
186 | // (distorted) coordinates in xp. The distortion is set according to the given effect (inherited classes) | |
187 | // roc represents the TPC read out chamber (offline numbering convention) | |
188 | // | |
189 | Float_t dx[3]; | |
190 | GetCorrection(x,roc,dx); | |
191 | for (Int_t j=0;j<3;++j) xp[j]=x[j]+dx[j]; | |
192 | } | |
193 | ||
194 | void AliTPCCorrection::DistortPoint(Float_t x[],const Short_t roc) { | |
195 | // | |
196 | // Distorts the initial coordinates x (cartesian coordinates) | |
197 | // according to the given effect (inherited classes) | |
198 | // roc represents the TPC read out chamber (offline numbering convention) | |
199 | // | |
200 | Float_t dx[3]; | |
201 | GetDistortion(x,roc,dx); | |
202 | for (Int_t j=0;j<3;++j) x[j]+=dx[j]; | |
203 | } | |
204 | ||
205 | void AliTPCCorrection::DistortPoint(const Float_t x[],const Short_t roc,Float_t xp[]) { | |
206 | // | |
207 | // Distorts the initial coordinates x (cartesian coordinates) and stores the new | |
208 | // (distorted) coordinates in xp. The distortion is set according to the given effect (inherited classes) | |
209 | // roc represents the TPC read out chamber (offline numbering convention) | |
210 | // | |
211 | Float_t dx[3]; | |
212 | GetDistortion(x,roc,dx); | |
213 | for (Int_t j=0;j<3;++j) xp[j]=x[j]+dx[j]; | |
214 | } | |
215 | ||
216 | void AliTPCCorrection::GetCorrection(const Float_t /*x*/[],const Short_t /*roc*/,Float_t dx[]) { | |
217 | // | |
218 | // This function delivers the correction values dx in respect to the inital coordinates x | |
219 | // roc represents the TPC read out chamber (offline numbering convention) | |
220 | // Note: The dx is overwritten by the inherited effectice class ... | |
221 | // | |
222 | for (Int_t j=0;j<3;++j) { dx[j]=0.; } | |
223 | } | |
224 | ||
225 | void AliTPCCorrection::GetDistortion(const Float_t x[],const Short_t roc,Float_t dx[]) { | |
226 | // | |
227 | // This function delivers the distortion values dx in respect to the inital coordinates x | |
228 | // roc represents the TPC read out chamber (offline numbering convention) | |
229 | // | |
230 | GetCorrection(x,roc,dx); | |
231 | for (Int_t j=0;j<3;++j) dx[j]=-dx[j]; | |
232 | } | |
233 | ||
234 | void AliTPCCorrection::Init() { | |
235 | // | |
236 | // Initialization funtion (not used at the moment) | |
237 | // | |
238 | } | |
239 | ||
e527a1b9 | 240 | void AliTPCCorrection::Update(const TTimeStamp &/*timeStamp*/) { |
241 | // | |
242 | // Update function | |
243 | // | |
244 | } | |
245 | ||
0116859c | 246 | void AliTPCCorrection::Print(Option_t* /*option*/) const { |
247 | // | |
248 | // Print function to check which correction classes are used | |
249 | // option=="d" prints details regarding the setted magnitude | |
250 | // option=="a" prints the C0 and C1 coefficents for calibration purposes | |
251 | // | |
252 | printf("TPC spacepoint correction: \"%s\"\n",GetTitle()); | |
253 | } | |
254 | ||
534fd34a | 255 | void AliTPCCorrection:: SetOmegaTauT1T2(Float_t /*omegaTau*/,Float_t t1,Float_t t2) { |
0116859c | 256 | // |
257 | // Virtual funtion to pass the wt values (might become event dependent) to the inherited classes | |
258 | // t1 and t2 represent the "effective omegaTau" corrections and were measured in a dedicated | |
259 | // calibration run | |
260 | // | |
534fd34a | 261 | fT1=t1; |
262 | fT2=t2; | |
263 | //SetOmegaTauT1T2(omegaTau, t1, t2); | |
0116859c | 264 | } |
265 | ||
266 | TH2F* AliTPCCorrection::CreateHistoDRinXY(Float_t z,Int_t nx,Int_t ny) { | |
267 | // | |
268 | // Simple plot functionality. | |
269 | // Returns a 2d hisogram which represents the corrections in radial direction (dr) | |
270 | // in respect to position z within the XY plane. | |
271 | // The histogramm has nx times ny entries. | |
272 | // | |
273 | ||
274 | TH2F *h=CreateTH2F("dr_xy",GetTitle(),"x [cm]","y [cm]","dr [cm]", | |
275 | nx,-250.,250.,ny,-250.,250.); | |
276 | Float_t x[3],dx[3]; | |
277 | x[2]=z; | |
278 | Int_t roc=z>0.?0:18; // FIXME | |
279 | for (Int_t iy=1;iy<=ny;++iy) { | |
280 | x[1]=h->GetYaxis()->GetBinCenter(iy); | |
281 | for (Int_t ix=1;ix<=nx;++ix) { | |
282 | x[0]=h->GetXaxis()->GetBinCenter(ix); | |
283 | GetCorrection(x,roc,dx); | |
284 | Float_t r0=TMath::Sqrt((x[0] )*(x[0] )+(x[1] )*(x[1] )); | |
285 | if (90.<=r0 && r0<=250.) { | |
286 | Float_t r1=TMath::Sqrt((x[0]+dx[0])*(x[0]+dx[0])+(x[1]+dx[1])*(x[1]+dx[1])); | |
287 | h->SetBinContent(ix,iy,r1-r0); | |
288 | } | |
289 | else | |
290 | h->SetBinContent(ix,iy,0.); | |
291 | } | |
292 | } | |
293 | return h; | |
294 | } | |
295 | ||
296 | TH2F* AliTPCCorrection::CreateHistoDRPhiinXY(Float_t z,Int_t nx,Int_t ny) { | |
297 | // | |
298 | // Simple plot functionality. | |
299 | // Returns a 2d hisogram which represents the corrections in rphi direction (drphi) | |
300 | // in respect to position z within the XY plane. | |
301 | // The histogramm has nx times ny entries. | |
302 | // | |
303 | ||
304 | TH2F *h=CreateTH2F("drphi_xy",GetTitle(),"x [cm]","y [cm]","drphi [cm]", | |
305 | nx,-250.,250.,ny,-250.,250.); | |
306 | Float_t x[3],dx[3]; | |
307 | x[2]=z; | |
308 | Int_t roc=z>0.?0:18; // FIXME | |
309 | for (Int_t iy=1;iy<=ny;++iy) { | |
310 | x[1]=h->GetYaxis()->GetBinCenter(iy); | |
311 | for (Int_t ix=1;ix<=nx;++ix) { | |
312 | x[0]=h->GetXaxis()->GetBinCenter(ix); | |
313 | GetCorrection(x,roc,dx); | |
314 | Float_t r0=TMath::Sqrt((x[0] )*(x[0] )+(x[1] )*(x[1] )); | |
315 | if (90.<=r0 && r0<=250.) { | |
316 | Float_t phi0=TMath::ATan2(x[1] ,x[0] ); | |
317 | Float_t phi1=TMath::ATan2(x[1]+dx[1],x[0]+dx[0]); | |
318 | ||
319 | Float_t dphi=phi1-phi0; | |
320 | if (dphi<TMath::Pi()) dphi+=TMath::TwoPi(); | |
321 | if (dphi>TMath::Pi()) dphi-=TMath::TwoPi(); | |
322 | ||
323 | h->SetBinContent(ix,iy,r0*dphi); | |
324 | } | |
325 | else | |
326 | h->SetBinContent(ix,iy,0.); | |
327 | } | |
328 | } | |
329 | return h; | |
330 | } | |
331 | ||
332 | TH2F* AliTPCCorrection::CreateHistoDRinZR(Float_t phi,Int_t nz,Int_t nr) { | |
333 | // | |
334 | // Simple plot functionality. | |
335 | // Returns a 2d hisogram which represents the corrections in r direction (dr) | |
336 | // in respect to angle phi within the ZR plane. | |
337 | // The histogramm has nx times ny entries. | |
338 | // | |
339 | TH2F *h=CreateTH2F("dr_zr",GetTitle(),"z [cm]","r [cm]","dr [cm]", | |
340 | nz,-250.,250.,nr,85.,250.); | |
341 | Float_t x[3],dx[3]; | |
342 | for (Int_t ir=1;ir<=nr;++ir) { | |
343 | Float_t radius=h->GetYaxis()->GetBinCenter(ir); | |
344 | x[0]=radius*TMath::Cos(phi); | |
345 | x[1]=radius*TMath::Sin(phi); | |
346 | for (Int_t iz=1;iz<=nz;++iz) { | |
347 | x[2]=h->GetXaxis()->GetBinCenter(iz); | |
348 | Int_t roc=x[2]>0.?0:18; // FIXME | |
349 | GetCorrection(x,roc,dx); | |
350 | Float_t r0=TMath::Sqrt((x[0] )*(x[0] )+(x[1] )*(x[1] )); | |
351 | Float_t r1=TMath::Sqrt((x[0]+dx[0])*(x[0]+dx[0])+(x[1]+dx[1])*(x[1]+dx[1])); | |
352 | h->SetBinContent(iz,ir,r1-r0); | |
353 | } | |
354 | } | |
0116859c | 355 | return h; |
356 | ||
357 | } | |
358 | ||
359 | TH2F* AliTPCCorrection::CreateHistoDRPhiinZR(Float_t phi,Int_t nz,Int_t nr) { | |
360 | // | |
361 | // Simple plot functionality. | |
362 | // Returns a 2d hisogram which represents the corrections in rphi direction (drphi) | |
363 | // in respect to angle phi within the ZR plane. | |
364 | // The histogramm has nx times ny entries. | |
365 | // | |
366 | TH2F *h=CreateTH2F("drphi_zr",GetTitle(),"z [cm]","r [cm]","drphi [cm]", | |
367 | nz,-250.,250.,nr,85.,250.); | |
368 | Float_t x[3],dx[3]; | |
369 | for (Int_t iz=1;iz<=nz;++iz) { | |
370 | x[2]=h->GetXaxis()->GetBinCenter(iz); | |
371 | Int_t roc=x[2]>0.?0:18; // FIXME | |
372 | for (Int_t ir=1;ir<=nr;++ir) { | |
373 | Float_t radius=h->GetYaxis()->GetBinCenter(ir); | |
374 | x[0]=radius*TMath::Cos(phi); | |
375 | x[1]=radius*TMath::Sin(phi); | |
376 | GetCorrection(x,roc,dx); | |
377 | Float_t r0=TMath::Sqrt((x[0] )*(x[0] )+(x[1] )*(x[1] )); | |
378 | Float_t phi0=TMath::ATan2(x[1] ,x[0] ); | |
379 | Float_t phi1=TMath::ATan2(x[1]+dx[1],x[0]+dx[0]); | |
380 | ||
381 | Float_t dphi=phi1-phi0; | |
382 | if (dphi<TMath::Pi()) dphi+=TMath::TwoPi(); | |
383 | if (dphi>TMath::Pi()) dphi-=TMath::TwoPi(); | |
384 | ||
385 | h->SetBinContent(iz,ir,r0*dphi); | |
386 | } | |
387 | } | |
388 | return h; | |
389 | } | |
390 | ||
391 | TH2F* AliTPCCorrection::CreateTH2F(const char *name,const char *title, | |
392 | const char *xlabel,const char *ylabel,const char *zlabel, | |
393 | Int_t nbinsx,Double_t xlow,Double_t xup, | |
394 | Int_t nbinsy,Double_t ylow,Double_t yup) { | |
395 | // | |
396 | // Helper function to create a 2d histogramm of given size | |
397 | // | |
398 | ||
399 | TString hname=name; | |
400 | Int_t i=0; | |
401 | if (gDirectory) { | |
402 | while (gDirectory->FindObject(hname.Data())) { | |
403 | hname =name; | |
404 | hname+="_"; | |
405 | hname+=i; | |
406 | ++i; | |
407 | } | |
408 | } | |
409 | TH2F *h=new TH2F(hname.Data(),title, | |
410 | nbinsx,xlow,xup, | |
411 | nbinsy,ylow,yup); | |
412 | h->GetXaxis()->SetTitle(xlabel); | |
413 | h->GetYaxis()->SetTitle(ylabel); | |
414 | h->GetZaxis()->SetTitle(zlabel); | |
415 | h->SetStats(0); | |
416 | return h; | |
417 | } | |
418 | ||
419 | ||
420 | // Simple Interpolation functions: e.g. with bi(tri)cubic interpolations (not yet in TH2 and TH3) | |
421 | ||
422 | void AliTPCCorrection::Interpolate2DEdistortion( const Int_t order, const Double_t r, const Double_t z, | |
b1f0a2a5 | 423 | const Double_t er[kNZ][kNR], Double_t &erValue ) { |
0116859c | 424 | // |
425 | // Interpolate table - 2D interpolation | |
426 | // | |
b1f0a2a5 | 427 | Double_t saveEr[10] ; |
0116859c | 428 | |
429 | Search( kNZ, fgkZList, z, fJLow ) ; | |
430 | Search( kNR, fgkRList, r, fKLow ) ; | |
431 | if ( fJLow < 0 ) fJLow = 0 ; // check if out of range | |
432 | if ( fKLow < 0 ) fKLow = 0 ; | |
433 | if ( fJLow + order >= kNZ - 1 ) fJLow = kNZ - 1 - order ; | |
434 | if ( fKLow + order >= kNR - 1 ) fKLow = kNR - 1 - order ; | |
435 | ||
436 | for ( Int_t j = fJLow ; j < fJLow + order + 1 ; j++ ) { | |
b1f0a2a5 | 437 | saveEr[j-fJLow] = Interpolate( &fgkRList[fKLow], &er[j][fKLow], order, r ) ; |
0116859c | 438 | } |
b1f0a2a5 | 439 | erValue = Interpolate( &fgkZList[fJLow], saveEr, order, z ) ; |
0116859c | 440 | |
441 | } | |
442 | ||
443 | ||
444 | Double_t AliTPCCorrection::Interpolate( const Double_t xArray[], const Double_t yArray[], | |
b1f0a2a5 | 445 | const Int_t order, const Double_t x ) { |
0116859c | 446 | // |
447 | // Interpolate function Y(x) using linear (order=1) or quadratic (order=2) interpolation. | |
448 | // | |
449 | ||
450 | Double_t y ; | |
451 | if ( order == 2 ) { // Quadratic Interpolation = 2 | |
452 | y = (x-xArray[1]) * (x-xArray[2]) * yArray[0] / ( (xArray[0]-xArray[1]) * (xArray[0]-xArray[2]) ) ; | |
453 | y += (x-xArray[2]) * (x-xArray[0]) * yArray[1] / ( (xArray[1]-xArray[2]) * (xArray[1]-xArray[0]) ) ; | |
454 | y += (x-xArray[0]) * (x-xArray[1]) * yArray[2] / ( (xArray[2]-xArray[0]) * (xArray[2]-xArray[1]) ) ; | |
455 | } else { // Linear Interpolation = 1 | |
456 | y = yArray[0] + ( yArray[1]-yArray[0] ) * ( x-xArray[0] ) / ( xArray[1] - xArray[0] ) ; | |
457 | } | |
458 | ||
459 | return (y); | |
460 | ||
461 | } | |
462 | ||
463 | ||
b1f0a2a5 | 464 | void AliTPCCorrection::Search( const Int_t n, const Double_t xArray[], const Double_t x, Int_t &low ) { |
0116859c | 465 | // |
466 | // Search an ordered table by starting at the most recently used point | |
467 | // | |
468 | ||
469 | Long_t middle, high ; | |
470 | Int_t ascend = 0, increment = 1 ; | |
471 | ||
472 | if ( xArray[n-1] >= xArray[0] ) ascend = 1 ; // Ascending ordered table if true | |
473 | ||
474 | if ( low < 0 || low > n-1 ) { | |
475 | low = -1 ; high = n ; | |
476 | } else { // Ordered Search phase | |
477 | if ( (Int_t)( x >= xArray[low] ) == ascend ) { | |
478 | if ( low == n-1 ) return ; | |
479 | high = low + 1 ; | |
480 | while ( (Int_t)( x >= xArray[high] ) == ascend ) { | |
481 | low = high ; | |
482 | increment *= 2 ; | |
483 | high = low + increment ; | |
484 | if ( high > n-1 ) { high = n ; break ; } | |
485 | } | |
486 | } else { | |
487 | if ( low == 0 ) { low = -1 ; return ; } | |
488 | high = low - 1 ; | |
489 | while ( (Int_t)( x < xArray[low] ) == ascend ) { | |
490 | high = low ; | |
491 | increment *= 2 ; | |
492 | if ( increment >= high ) { low = -1 ; break ; } | |
493 | else low = high - increment ; | |
494 | } | |
495 | } | |
496 | } | |
497 | ||
498 | while ( (high-low) != 1 ) { // Binary Search Phase | |
499 | middle = ( high + low ) / 2 ; | |
500 | if ( (Int_t)( x >= xArray[middle] ) == ascend ) | |
501 | low = middle ; | |
502 | else | |
503 | high = middle ; | |
504 | } | |
505 | ||
506 | if ( x == xArray[n-1] ) low = n-2 ; | |
507 | if ( x == xArray[0] ) low = 0 ; | |
508 | ||
509 | } | |
510 | ||
1b923461 | 511 | void AliTPCCorrection::PoissonRelaxation2D(TMatrixD &arrayV, const TMatrixD &chargeDensity, |
512 | TMatrixD &arrayErOverEz, const Int_t rows, | |
513 | const Int_t columns, const Int_t iterations ) { | |
514 | // | |
515 | // Solve Poisson's Equation by Relaxation Technique in 2D (assuming cylindrical symmetry) | |
516 | // | |
517 | // Solve Poissons equation in a cylindrical coordinate system. The arrayV matrix must be filled with the | |
518 | // boundary conditions on the first and last rows, and the first and last columns. The remainder of the | |
519 | // array can be blank or contain a preliminary guess at the solution. The Charge density matrix contains | |
520 | // the enclosed spacecharge density at each point. The charge density matrix can be full of zero's if | |
521 | // you wish to solve Laplaces equation however it should not contain random numbers or you will get | |
522 | // random numbers back as a solution. | |
523 | // Poisson's equation is solved by iteratively relaxing the matrix to the final solution. In order to | |
524 | // speed up the convergence to the best solution, this algorithm does a binary expansion of the solution | |
525 | // space. First it solves the problem on a very sparse grid by skipping rows and columns in the original | |
526 | // matrix. Then it doubles the number of points and solves the problem again. Then it doubles the | |
527 | // number of points and solves the problem again. This happens several times until the maximum number | |
528 | // of points has been included in the array. | |
529 | // | |
530 | // NOTE: In order for this algorithmto work, the number of rows and columns must be a power of 2 plus one. | |
531 | // So rows == 2**M + 1 and columns == 2**N + 1. The number of rows and columns can be different. | |
532 | // | |
533 | // Original code by Jim Thomas (STAR TPC Collaboration) | |
534 | // | |
535 | ||
536 | Double_t ezField = (fgkCathodeV-fgkGG)/fgkTPCZ0; // = ALICE Electric Field (V/cm) Magnitude ~ -400 V/cm; | |
537 | ||
538 | const Float_t gridSizeR = (fgkOFCRadius-fgkIFCRadius) / (rows-1) ; | |
539 | const Float_t gridSizeZ = fgkTPCZ0 / (columns-1) ; | |
540 | const Float_t ratio = gridSizeR*gridSizeR / (gridSizeZ*gridSizeZ) ; | |
541 | ||
542 | TMatrixD arrayEr(rows,columns) ; | |
543 | TMatrixD arrayEz(rows,columns) ; | |
544 | ||
545 | //Check that number of rows and columns is suitable for a binary expansion | |
546 | ||
547 | if ( !IsPowerOfTwo(rows-1) ) { | |
548 | AliError("PoissonRelaxation - Error in the number of rows. Must be 2**M - 1"); | |
549 | return; | |
550 | } | |
551 | if ( !IsPowerOfTwo(columns-1) ) { | |
552 | AliError("PoissonRelaxation - Error in the number of columns. Must be 2**N - 1"); | |
553 | return; | |
554 | } | |
555 | ||
556 | // Solve Poisson's equation in cylindrical coordinates by relaxation technique | |
557 | // Allow for different size grid spacing in R and Z directions | |
558 | // Use a binary expansion of the size of the matrix to speed up the solution of the problem | |
559 | ||
560 | Int_t iOne = (rows-1)/4 ; | |
561 | Int_t jOne = (columns-1)/4 ; | |
562 | // Solve for N in 2**N, add one. | |
563 | Int_t loops = 1 + (int) ( 0.5 + TMath::Log2( (double) TMath::Max(iOne,jOne) ) ) ; | |
564 | ||
565 | for ( Int_t count = 0 ; count < loops ; count++ ) { | |
566 | // Loop while the matrix expands & the resolution increases. | |
567 | ||
568 | Float_t tempGridSizeR = gridSizeR * iOne ; | |
569 | Float_t tempRatio = ratio * iOne * iOne / ( jOne * jOne ) ; | |
570 | Float_t tempFourth = 1.0 / (2.0 + 2.0*tempRatio) ; | |
571 | ||
572 | // Do this the standard C++ way to avoid gcc extensions for Float_t coef1[rows] | |
573 | std::vector<float> coef1(rows) ; | |
574 | std::vector<float> coef2(rows) ; | |
575 | ||
576 | for ( Int_t i = iOne ; i < rows-1 ; i+=iOne ) { | |
577 | Float_t radius = fgkIFCRadius + i*gridSizeR ; | |
578 | coef1[i] = 1.0 + tempGridSizeR/(2*radius); | |
579 | coef2[i] = 1.0 - tempGridSizeR/(2*radius); | |
580 | } | |
581 | ||
582 | TMatrixD sumChargeDensity(rows,columns) ; | |
583 | ||
584 | for ( Int_t i = iOne ; i < rows-1 ; i += iOne ) { | |
585 | Float_t radius = fgkIFCRadius + iOne*gridSizeR ; | |
586 | for ( Int_t j = jOne ; j < columns-1 ; j += jOne ) { | |
587 | if ( iOne == 1 && jOne == 1 ) sumChargeDensity(i,j) = chargeDensity(i,j) ; | |
588 | else { | |
589 | // Add up all enclosed charge density contributions within 1/2 unit in all directions | |
590 | Float_t weight = 0.0 ; | |
591 | Float_t sum = 0.0 ; | |
592 | sumChargeDensity(i,j) = 0.0 ; | |
593 | for ( Int_t ii = i-iOne/2 ; ii <= i+iOne/2 ; ii++ ) { | |
594 | for ( Int_t jj = j-jOne/2 ; jj <= j+jOne/2 ; jj++ ) { | |
595 | if ( ii == i-iOne/2 || ii == i+iOne/2 || jj == j-jOne/2 || jj == j+jOne/2 ) weight = 0.5 ; | |
596 | else | |
597 | weight = 1.0 ; | |
598 | // Note that this is cylindrical geometry | |
599 | sumChargeDensity(i,j) += chargeDensity(ii,jj)*weight*radius ; | |
600 | sum += weight*radius ; | |
601 | } | |
602 | } | |
603 | sumChargeDensity(i,j) /= sum ; | |
604 | } | |
605 | sumChargeDensity(i,j) *= tempGridSizeR*tempGridSizeR; // just saving a step later on | |
606 | } | |
607 | } | |
608 | ||
609 | for ( Int_t k = 1 ; k <= iterations; k++ ) { | |
610 | // Solve Poisson's Equation | |
611 | // Over-relaxation index, must be >= 1 but < 2. Arrange for it to evolve from 2 => 1 | |
612 | // as interations increase. | |
613 | Float_t overRelax = 1.0 + TMath::Sqrt( TMath::Cos( (k*TMath::PiOver2())/iterations ) ) ; | |
614 | Float_t overRelaxM1 = overRelax - 1.0 ; | |
615 | Float_t overRelaxtempFourth, overRelaxcoef5 ; | |
616 | overRelaxtempFourth = overRelax * tempFourth ; | |
617 | overRelaxcoef5 = overRelaxM1 / overRelaxtempFourth ; | |
618 | ||
619 | for ( Int_t i = iOne ; i < rows-1 ; i += iOne ) { | |
620 | for ( Int_t j = jOne ; j < columns-1 ; j += jOne ) { | |
621 | ||
622 | arrayV(i,j) = ( coef2[i] * arrayV(i-iOne,j) | |
623 | + tempRatio * ( arrayV(i,j-jOne) + arrayV(i,j+jOne) ) | |
624 | - overRelaxcoef5 * arrayV(i,j) | |
625 | + coef1[i] * arrayV(i+iOne,j) | |
626 | + sumChargeDensity(i,j) | |
627 | ) * overRelaxtempFourth; | |
628 | } | |
629 | } | |
630 | ||
631 | if ( k == iterations ) { | |
632 | // After full solution is achieved, copy low resolution solution into higher res array | |
633 | for ( Int_t i = iOne ; i < rows-1 ; i += iOne ) { | |
634 | for ( Int_t j = jOne ; j < columns-1 ; j += jOne ) { | |
635 | ||
636 | if ( iOne > 1 ) { | |
637 | arrayV(i+iOne/2,j) = ( arrayV(i+iOne,j) + arrayV(i,j) ) / 2 ; | |
638 | if ( i == iOne ) arrayV(i-iOne/2,j) = ( arrayV(0,j) + arrayV(iOne,j) ) / 2 ; | |
639 | } | |
640 | if ( jOne > 1 ) { | |
641 | arrayV(i,j+jOne/2) = ( arrayV(i,j+jOne) + arrayV(i,j) ) / 2 ; | |
642 | if ( j == jOne ) arrayV(i,j-jOne/2) = ( arrayV(i,0) + arrayV(i,jOne) ) / 2 ; | |
643 | } | |
644 | if ( iOne > 1 && jOne > 1 ) { | |
645 | arrayV(i+iOne/2,j+jOne/2) = ( arrayV(i+iOne,j+jOne) + arrayV(i,j) ) / 2 ; | |
646 | if ( i == iOne ) arrayV(i-iOne/2,j-jOne/2) = ( arrayV(0,j-jOne) + arrayV(iOne,j) ) / 2 ; | |
647 | if ( j == jOne ) arrayV(i-iOne/2,j-jOne/2) = ( arrayV(i-iOne,0) + arrayV(i,jOne) ) / 2 ; | |
648 | // Note that this leaves a point at the upper left and lower right corners uninitialized. | |
649 | // -> Not a big deal. | |
650 | } | |
651 | ||
652 | } | |
653 | } | |
654 | } | |
655 | ||
656 | } | |
657 | ||
658 | iOne = iOne / 2 ; if ( iOne < 1 ) iOne = 1 ; | |
659 | jOne = jOne / 2 ; if ( jOne < 1 ) jOne = 1 ; | |
660 | ||
661 | } | |
662 | ||
663 | // Differentiate V(r) and solve for E(r) using special equations for the first and last rows | |
664 | for ( Int_t j = 0 ; j < columns ; j++ ) { | |
665 | for ( Int_t i = 1 ; i < rows-1 ; i++ ) arrayEr(i,j) = -1 * ( arrayV(i+1,j) - arrayV(i-1,j) ) / (2*gridSizeR) ; | |
666 | arrayEr(0,j) = -1 * ( -0.5*arrayV(2,j) + 2.0*arrayV(1,j) - 1.5*arrayV(0,j) ) / gridSizeR ; | |
667 | arrayEr(rows-1,j) = -1 * ( 1.5*arrayV(rows-1,j) - 2.0*arrayV(rows-2,j) + 0.5*arrayV(rows-3,j) ) / gridSizeR ; | |
668 | } | |
669 | ||
670 | // Differentiate V(z) and solve for E(z) using special equations for the first and last columns | |
671 | for ( Int_t i = 0 ; i < rows ; i++) { | |
672 | for ( Int_t j = 1 ; j < columns-1 ; j++ ) arrayEz(i,j) = -1 * ( arrayV(i,j+1) - arrayV(i,j-1) ) / (2*gridSizeZ) ; | |
673 | arrayEz(i,0) = -1 * ( -0.5*arrayV(i,2) + 2.0*arrayV(i,1) - 1.5*arrayV(i,0) ) / gridSizeZ ; | |
674 | arrayEz(i,columns-1) = -1 * ( 1.5*arrayV(i,columns-1) - 2.0*arrayV(i,columns-2) + 0.5*arrayV(i,columns-3) ) / gridSizeZ ; | |
675 | } | |
676 | ||
677 | for ( Int_t i = 0 ; i < rows ; i++) { | |
678 | // Note: go back and compare to old version of this code. See notes below. | |
679 | // JT Test ... attempt to divide by real Ez not Ez to first order | |
680 | for ( Int_t j = 0 ; j < columns ; j++ ) { | |
681 | arrayEz(i,j) += ezField; | |
682 | // This adds back the overall Z gradient of the field (main E field component) | |
683 | } | |
684 | // Warning: (-=) assumes you are using an error potetial without the overall Field included | |
685 | } | |
686 | ||
687 | // Integrate Er/Ez from Z to zero | |
688 | for ( Int_t j = 0 ; j < columns ; j++ ) { | |
689 | for ( Int_t i = 0 ; i < rows ; i++ ) { | |
690 | Int_t index = 1 ; // Simpsons rule if N=odd. If N!=odd then add extra point by trapezoidal rule. | |
691 | arrayErOverEz(i,j) = 0.0 ; | |
692 | for ( Int_t k = j ; k < columns ; k++ ) { | |
693 | arrayErOverEz(i,j) += index*(gridSizeZ/3.0)*arrayEr(i,k)/arrayEz(i,k) ; | |
694 | if ( index != 4 ) index = 4; else index = 2 ; | |
695 | } | |
696 | if ( index == 4 ) arrayErOverEz(i,j) -= (gridSizeZ/3.0)*arrayEr(i,columns-1)/arrayEz(i,columns-1) ; | |
697 | if ( index == 2 ) arrayErOverEz(i,j) += | |
698 | (gridSizeZ/3.0) * ( 0.5*arrayEr(i,columns-2)/arrayEz(i,columns-2) | |
699 | -2.5*arrayEr(i,columns-1)/arrayEz(i,columns-1) ) ; | |
700 | if ( j == columns-2 ) arrayErOverEz(i,j) = | |
701 | (gridSizeZ/3.0) * ( 1.5*arrayEr(i,columns-2)/arrayEz(i,columns-2) | |
702 | +1.5*arrayEr(i,columns-1)/arrayEz(i,columns-1) ) ; | |
703 | if ( j == columns-1 ) arrayErOverEz(i,j) = 0.0 ; | |
704 | } | |
705 | } | |
706 | ||
707 | } | |
708 | ||
709 | ||
710 | ||
710bda39 | 711 | Int_t AliTPCCorrection::IsPowerOfTwo(Int_t i) const { |
1b923461 | 712 | // |
713 | // Helperfunction: Check if integer is a power of 2 | |
714 | // | |
715 | Int_t j = 0; | |
716 | while( i > 0 ) { j += (i&1) ; i = (i>>1) ; } | |
717 | if ( j == 1 ) return(1) ; // True | |
718 | return(0) ; // False | |
719 | } | |
720 | ||
cf5b0aa0 | 721 | |
b1f0a2a5 | 722 | AliExternalTrackParam * AliTPCCorrection::FitDistortedTrack(AliExternalTrackParam & trackIn, Double_t refX, Int_t dir, TTreeSRedirector * const pcstream){ |
cf5b0aa0 | 723 | // |
724 | // Fit the track parameters - without and with distortion | |
725 | // 1. Space points in the TPC are simulated along the trajectory | |
726 | // 2. Space points distorted | |
727 | // 3. Fits the non distorted and distroted track to the reference plane at refX | |
728 | // 4. For visualization and debugging purposes the space points and tracks can be stored in the tree - using the TTreeSRedirector functionality | |
729 | // | |
730 | // trackIn - input track parameters | |
731 | // refX - reference X to fit the track | |
732 | // dir - direction - out=1 or in=-1 | |
733 | // pcstream - debug streamer to check the results | |
734 | // | |
cad404e1 | 735 | // see AliExternalTrackParam.h documentation: |
736 | // track1.fP[0] - local y (rphi) | |
737 | // track1.fP[1] - z | |
738 | // track1.fP[2] - sinus of local inclination angle | |
739 | // track1.fP[3] - tangent of deep angle | |
740 | // track1.fP[4] - 1/pt | |
1b923461 | 741 | |
cf5b0aa0 | 742 | AliTPCROC * roc = AliTPCROC::Instance(); |
743 | const Int_t npoints0=roc->GetNRows(0)+roc->GetNRows(36); | |
744 | const Double_t kRTPC0 =roc->GetPadRowRadii(0,0); | |
745 | const Double_t kRTPC1 =roc->GetPadRowRadii(36,roc->GetNRows(36)-1); | |
cf5b0aa0 | 746 | const Double_t kMaxSnp = 0.85; |
747 | const Double_t kSigmaY=0.1; | |
748 | const Double_t kSigmaZ=0.1; | |
ca58ed4e | 749 | const Double_t kMaxR=500; |
750 | const Double_t kMaxZ=500; | |
cf5b0aa0 | 751 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); |
ca58ed4e | 752 | Int_t npoints1=0; |
753 | Int_t npoints2=0; | |
cf5b0aa0 | 754 | |
be67055b | 755 | AliExternalTrackParam track(trackIn); // |
cf5b0aa0 | 756 | // generate points |
757 | AliTrackPointArray pointArray0(npoints0); | |
758 | AliTrackPointArray pointArray1(npoints0); | |
759 | Double_t xyz[3]; | |
ca58ed4e | 760 | if (!AliTrackerBase::PropagateTrackToBxByBz(&track,kRTPC0,kMass,3,kTRUE,kMaxSnp)) return 0; |
cf5b0aa0 | 761 | // |
762 | // simulate the track | |
763 | Int_t npoints=0; | |
764 | Float_t covPoint[6]={0,0,0, kSigmaY*kSigmaY,0,kSigmaZ*kSigmaZ}; //covariance at the local frame | |
765 | for (Double_t radius=kRTPC0; radius<kRTPC1; radius++){ | |
ca58ed4e | 766 | if (!AliTrackerBase::PropagateTrackToBxByBz(&track,radius,kMass,3,kTRUE,kMaxSnp)) return 0; |
cf5b0aa0 | 767 | track.GetXYZ(xyz); |
ca58ed4e | 768 | xyz[0]+=gRandom->Gaus(0,0.00005); |
769 | xyz[1]+=gRandom->Gaus(0,0.00005); | |
770 | xyz[2]+=gRandom->Gaus(0,0.00005); | |
771 | if (TMath::Abs(track.GetZ())>kMaxZ) break; | |
772 | if (TMath::Abs(track.GetX())>kMaxR) break; | |
cf5b0aa0 | 773 | AliTrackPoint pIn0; // space point |
774 | AliTrackPoint pIn1; | |
ffab0c37 | 775 | Int_t sector= (xyz[2]>0)? 0:18; |
cf5b0aa0 | 776 | pointArray0.GetPoint(pIn0,npoints); |
777 | pointArray1.GetPoint(pIn1,npoints); | |
778 | Double_t alpha = TMath::ATan2(xyz[1],xyz[0]); | |
779 | Float_t distPoint[3]={xyz[0],xyz[1],xyz[2]}; | |
ffab0c37 | 780 | DistortPoint(distPoint, sector); |
cf5b0aa0 | 781 | pIn0.SetXYZ(xyz[0], xyz[1],xyz[2]); |
782 | pIn1.SetXYZ(distPoint[0], distPoint[1],distPoint[2]); | |
783 | // | |
784 | track.Rotate(alpha); | |
785 | AliTrackPoint prot0 = pIn0.Rotate(alpha); // rotate to the local frame - non distoted point | |
786 | AliTrackPoint prot1 = pIn1.Rotate(alpha); // rotate to the local frame - distorted point | |
787 | prot0.SetXYZ(prot0.GetX(),prot0.GetY(), prot0.GetZ(),covPoint); | |
788 | prot1.SetXYZ(prot1.GetX(),prot1.GetY(), prot1.GetZ(),covPoint); | |
789 | pIn0=prot0.Rotate(-alpha); // rotate back to global frame | |
790 | pIn1=prot1.Rotate(-alpha); // rotate back to global frame | |
791 | pointArray0.AddPoint(npoints, &pIn0); | |
792 | pointArray1.AddPoint(npoints, &pIn1); | |
793 | npoints++; | |
794 | if (npoints>=npoints0) break; | |
795 | } | |
7f4cb119 | 796 | if (npoints<npoints0/2) return 0; |
cf5b0aa0 | 797 | // |
798 | // refit track | |
799 | // | |
800 | AliExternalTrackParam *track0=0; | |
801 | AliExternalTrackParam *track1=0; | |
802 | AliTrackPoint point1,point2,point3; | |
803 | if (dir==1) { //make seed inner | |
804 | pointArray0.GetPoint(point1,1); | |
4486a91f | 805 | pointArray0.GetPoint(point2,30); |
806 | pointArray0.GetPoint(point3,60); | |
cf5b0aa0 | 807 | } |
808 | if (dir==-1){ //make seed outer | |
4486a91f | 809 | pointArray0.GetPoint(point1,npoints-60); |
810 | pointArray0.GetPoint(point2,npoints-30); | |
cf5b0aa0 | 811 | pointArray0.GetPoint(point3,npoints-1); |
812 | } | |
813 | track0 = AliTrackerBase::MakeSeed(point1, point2, point3); | |
814 | track1 = AliTrackerBase::MakeSeed(point1, point2, point3); | |
815 | ||
cf5b0aa0 | 816 | for (Int_t jpoint=0; jpoint<npoints; jpoint++){ |
8b63d99c | 817 | Int_t ipoint= (dir>0) ? jpoint: npoints-1-jpoint; |
cf5b0aa0 | 818 | // |
819 | AliTrackPoint pIn0; | |
820 | AliTrackPoint pIn1; | |
821 | pointArray0.GetPoint(pIn0,ipoint); | |
822 | pointArray1.GetPoint(pIn1,ipoint); | |
823 | AliTrackPoint prot0 = pIn0.Rotate(track0->GetAlpha()); // rotate to the local frame - non distoted point | |
824 | AliTrackPoint prot1 = pIn1.Rotate(track1->GetAlpha()); // rotate to the local frame - distorted point | |
825 | // | |
ca58ed4e | 826 | if (!AliTrackerBase::PropagateTrackToBxByBz(track0,prot0.GetX(),kMass,3,kFALSE,kMaxSnp)) break; |
827 | if (!AliTrackerBase::PropagateTrackToBxByBz(track1,prot0.GetX(),kMass,3,kFALSE,kMaxSnp)) break; | |
828 | if (TMath::Abs(track0->GetZ())>kMaxZ) break; | |
829 | if (TMath::Abs(track0->GetX())>kMaxR) break; | |
830 | if (TMath::Abs(track1->GetZ())>kMaxZ) break; | |
831 | if (TMath::Abs(track1->GetX())>kMaxR) break; | |
832 | ||
8b63d99c | 833 | track.GetXYZ(xyz); // distorted track also propagated to the same reference radius |
cf5b0aa0 | 834 | // |
835 | Double_t pointPos[2]={0,0}; | |
836 | Double_t pointCov[3]={0,0,0}; | |
837 | pointPos[0]=prot0.GetY();//local y | |
838 | pointPos[1]=prot0.GetZ();//local z | |
839 | pointCov[0]=prot0.GetCov()[3];//simay^2 | |
840 | pointCov[1]=prot0.GetCov()[4];//sigmayz | |
841 | pointCov[2]=prot0.GetCov()[5];//sigmaz^2 | |
ca58ed4e | 842 | if (!track0->Update(pointPos,pointCov)) break; |
cf5b0aa0 | 843 | // |
8b63d99c | 844 | Double_t deltaX=prot1.GetX()-prot0.GetX(); // delta X |
845 | Double_t deltaYX=deltaX*TMath::Tan(TMath::ASin(track1->GetSnp())); // deltaY due delta X | |
846 | Double_t deltaZX=deltaX*track1->GetTgl(); // deltaZ due delta X | |
847 | ||
0b736a46 | 848 | pointPos[0]=prot1.GetY()-deltaYX;//local y is sign correct? should be minus |
849 | pointPos[1]=prot1.GetZ()-deltaZX;//local z is sign correct? should be minus | |
cf5b0aa0 | 850 | pointCov[0]=prot1.GetCov()[3];//simay^2 |
851 | pointCov[1]=prot1.GetCov()[4];//sigmayz | |
852 | pointCov[2]=prot1.GetCov()[5];//sigmaz^2 | |
ca58ed4e | 853 | if (!track1->Update(pointPos,pointCov)) break; |
854 | npoints1++; | |
855 | npoints2++; | |
cf5b0aa0 | 856 | } |
ca58ed4e | 857 | if (npoints2<npoints) return 0; |
8b63d99c | 858 | AliTrackerBase::PropagateTrackToBxByBz(track0,refX,kMass,2.,kTRUE,kMaxSnp); |
cf5b0aa0 | 859 | track1->Rotate(track0->GetAlpha()); |
ca58ed4e | 860 | AliTrackerBase::PropagateTrackToBxByBz(track1,refX,kMass,2.,kTRUE,kMaxSnp); |
cf5b0aa0 | 861 | |
cad404e1 | 862 | if (pcstream) (*pcstream)<<Form("fitDistort%s",GetName())<< |
cf5b0aa0 | 863 | "point0.="<<&pointArray0<< // points |
864 | "point1.="<<&pointArray1<< // distorted points | |
865 | "trackIn.="<<&track<< // original track | |
866 | "track0.="<<track0<< // fitted track | |
867 | "track1.="<<track1<< // fitted distorted track | |
868 | "\n"; | |
be67055b | 869 | new(&trackIn) AliExternalTrackParam(*track0); |
cf5b0aa0 | 870 | delete track0; |
871 | return track1; | |
872 | } | |
873 | ||
874 | ||
ffab0c37 | 875 | |
876 | ||
877 | ||
878 | TTree* AliTPCCorrection::CreateDistortionTree(Double_t step){ | |
879 | // | |
880 | // create the distortion tree on a mesh with granularity given by step | |
881 | // return the tree with distortions at given position | |
882 | // Map is created on the mesh with given step size | |
883 | // | |
884 | TTreeSRedirector *pcstream = new TTreeSRedirector(Form("correction%s.root",GetName())); | |
885 | Float_t xyz[3]; | |
886 | for (Double_t x= -250; x<250; x+=step){ | |
887 | for (Double_t y= -250; y<250; y+=step){ | |
888 | Double_t r = TMath::Sqrt(x*x+y*y); | |
889 | if (r<80) continue; | |
890 | if (r>250) continue; | |
891 | for (Double_t z= -250; z<250; z+=step){ | |
892 | Int_t roc=(z>0)?0:18; | |
893 | xyz[0]=x; | |
894 | xyz[1]=y; | |
895 | xyz[2]=z; | |
896 | Double_t phi = TMath::ATan2(y,x); | |
897 | DistortPoint(xyz,roc); | |
898 | Double_t r1 = TMath::Sqrt(xyz[0]*xyz[0]+xyz[1]*xyz[1]); | |
899 | Double_t phi1 = TMath::ATan2(xyz[1],xyz[0]); | |
900 | if ((phi1-phi)>TMath::Pi()) phi1-=TMath::Pi(); | |
901 | if ((phi1-phi)<-TMath::Pi()) phi1+=TMath::Pi(); | |
902 | Double_t dx = xyz[0]-x; | |
903 | Double_t dy = xyz[1]-y; | |
904 | Double_t dz = xyz[2]-z; | |
905 | Double_t dr=r1-r; | |
906 | Double_t drphi=(phi1-phi)*r; | |
907 | (*pcstream)<<"distortion"<< | |
908 | "x="<<x<< // original position | |
909 | "y="<<y<< | |
910 | "z="<<z<< | |
911 | "r="<<r<< | |
912 | "phi="<<phi<< | |
913 | "x1="<<xyz[0]<< // distorted position | |
914 | "y1="<<xyz[1]<< | |
915 | "z1="<<xyz[2]<< | |
916 | "r1="<<r1<< | |
917 | "phi1="<<phi1<< | |
918 | // | |
919 | "dx="<<dx<< // delta position | |
920 | "dy="<<dy<< | |
921 | "dz="<<dz<< | |
922 | "dr="<<dr<< | |
923 | "drphi="<<drphi<< | |
924 | "\n"; | |
925 | } | |
926 | } | |
927 | } | |
928 | delete pcstream; | |
929 | TFile f(Form("correction%s.root",GetName())); | |
930 | TTree * tree = (TTree*)f.Get("distortion"); | |
931 | TTree * tree2= tree->CopyTree("1"); | |
932 | tree2->SetName(Form("dist%s",GetName())); | |
933 | tree2->SetDirectory(0); | |
934 | delete tree; | |
935 | return tree2; | |
936 | } | |
937 | ||
938 | ||
939 | ||
be67055b | 940 | |
b1f0a2a5 | 941 | void AliTPCCorrection::MakeTrackDistortionTree(TTree *tinput, Int_t dtype, Int_t ptype, const TObjArray * corrArray, Int_t step, Bool_t debug ){ |
be67055b | 942 | // |
943 | // Make a fit tree: | |
944 | // For each partial correction (specified in array) and given track topology (phi, theta, snp, refX) | |
945 | // calculates partial distortions | |
946 | // Partial distortion is stored in the resulting tree | |
947 | // Output is storred in the file distortion_<dettype>_<partype>.root | |
948 | // Partial distortion is stored with the name given by correction name | |
949 | // | |
950 | // | |
951 | // Parameters of function: | |
952 | // input - input tree | |
953 | // dtype - distortion type 0 - ITSTPC, 1 -TPCTRD, 2 - TPCvertex | |
954 | // ppype - parameter type | |
955 | // corrArray - array with partial corrections | |
956 | // step - skipe entries - if 1 all entries processed - it is slow | |
957 | // debug 0 if debug on also space points dumped - it is slow | |
b322e06a | 958 | const Double_t kMaxSnp = 0.85; |
959 | const Double_t kMass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
960 | // const Double_t kB2C=-0.299792458e-3; | |
7f4cb119 | 961 | const Int_t kMinEntries=50; |
be67055b | 962 | Double_t phi,theta, snp, mean,rms, entries; |
963 | tinput->SetBranchAddress("theta",&theta); | |
964 | tinput->SetBranchAddress("phi", &phi); | |
965 | tinput->SetBranchAddress("snp",&snp); | |
966 | tinput->SetBranchAddress("mean",&mean); | |
967 | tinput->SetBranchAddress("rms",&rms); | |
968 | tinput->SetBranchAddress("entries",&entries); | |
969 | TTreeSRedirector *pcstream = new TTreeSRedirector(Form("distortion%d_%d.root",dtype,ptype)); | |
970 | // | |
971 | Int_t nentries=tinput->GetEntries(); | |
972 | Int_t ncorr=corrArray->GetEntries(); | |
7f4cb119 | 973 | Double_t corrections[100]={0}; // |
be67055b | 974 | Double_t tPar[5]; |
975 | Double_t cov[15]={0,0,0,0,0,0,0,0,0,0,0,0,0,0}; | |
976 | Double_t refX=0; | |
977 | Int_t dir=0; | |
7f4cb119 | 978 | if (dtype==0) {refX=85.; dir=-1;} |
979 | if (dtype==1) {refX=275.; dir=1;} | |
980 | if (dtype==2) {refX=85.; dir=-1;} | |
981 | if (dtype==3) {refX=360.; dir=-1;} | |
be67055b | 982 | // |
983 | for (Int_t ientry=0; ientry<nentries; ientry+=step){ | |
984 | tinput->GetEntry(ientry); | |
7f4cb119 | 985 | if (TMath::Abs(snp)>kMaxSnp) continue; |
be67055b | 986 | tPar[0]=0; |
987 | tPar[1]=theta*refX; | |
988 | tPar[2]=snp; | |
989 | tPar[3]=theta; | |
4486a91f | 990 | tPar[4]=(gRandom->Rndm()-0.5)*0.02; // should be calculated - non equal to 0 |
8b63d99c | 991 | Double_t bz=AliTrackerBase::GetBz(); |
4486a91f | 992 | if (refX>10. && TMath::Abs(bz)>0.1 ) tPar[4]=snp/(refX*bz*kB2C*2); |
993 | tPar[4]+=(gRandom->Rndm()-0.5)*0.02; | |
7f4cb119 | 994 | AliExternalTrackParam track(refX,phi,tPar,cov); |
995 | Double_t xyz[3]; | |
996 | track.GetXYZ(xyz); | |
997 | Int_t id=0; | |
998 | Double_t dRrec=0; // dummy value - needed for points - e.g for laser | |
0b736a46 | 999 | if (ptype==4 &&bz<0) mean*=-1; // interpret as curvature |
be67055b | 1000 | (*pcstream)<<"fit"<< |
8b63d99c | 1001 | "bz="<<bz<< // magnetic filed used |
be67055b | 1002 | "dtype="<<dtype<< // detector match type |
1003 | "ptype="<<ptype<< // parameter type | |
1004 | "theta="<<theta<< // theta | |
1005 | "phi="<<phi<< // phi | |
1006 | "snp="<<snp<< // snp | |
1007 | "mean="<<mean<< // mean dist value | |
1008 | "rms="<<rms<< // rms | |
7f4cb119 | 1009 | "gx="<<xyz[0]<< // global position at reference |
1010 | "gy="<<xyz[1]<< // global position at reference | |
1011 | "gz="<<xyz[2]<< // global position at reference | |
1012 | "dRrec="<<dRrec<< // delta Radius in reconstruction | |
1013 | "id="<<id<< // track id | |
be67055b | 1014 | "entries="<<entries;// number of entries in bin |
1015 | // | |
1016 | for (Int_t icorr=0; icorr<ncorr; icorr++) { | |
1017 | AliTPCCorrection *corr = (AliTPCCorrection*)corrArray->At(icorr); | |
1018 | corrections[icorr]=0; | |
1019 | if (entries>kMinEntries){ | |
1020 | AliExternalTrackParam trackIn(refX,phi,tPar,cov); | |
1021 | AliExternalTrackParam *trackOut = 0; | |
1022 | if (debug) trackOut=corr->FitDistortedTrack(trackIn, refX, dir,pcstream); | |
1023 | if (!debug) trackOut=corr->FitDistortedTrack(trackIn, refX, dir,0); | |
7f4cb119 | 1024 | if (dtype==0) {refX=85.; dir=-1;} |
1025 | if (dtype==1) {refX=275.; dir=1;} | |
b1f0a2a5 | 1026 | if (dtype==2) {refX=0; dir=-1;} |
7f4cb119 | 1027 | if (dtype==3) {refX=360.; dir=-1;} |
b1f0a2a5 | 1028 | // |
7f4cb119 | 1029 | if (trackOut){ |
1030 | AliTrackerBase::PropagateTrackToBxByBz(&trackIn,refX,kMass,3,kTRUE,kMaxSnp); | |
1031 | trackOut->Rotate(trackIn.GetAlpha()); | |
1032 | trackOut->PropagateTo(trackIn.GetX(),AliTrackerBase::GetBz()); | |
1033 | // | |
1034 | corrections[icorr]= trackOut->GetParameter()[ptype]-trackIn.GetParameter()[ptype]; | |
1035 | delete trackOut; | |
1036 | }else{ | |
1037 | corrections[icorr]=0; | |
1038 | } | |
0b736a46 | 1039 | if (ptype==4 &&bz<0) corrections[icorr]*=-1; // interpret as curvature |
be67055b | 1040 | } |
7f4cb119 | 1041 | Double_t dRdummy=0; |
be67055b | 1042 | (*pcstream)<<"fit"<< |
7f4cb119 | 1043 | Form("%s=",corr->GetName())<<corrections[icorr]<< // dump correction value |
1044 | Form("dR%s=",corr->GetName())<<dRdummy; // dump dummy correction value not needed for tracks | |
1045 | // for points it is neccessary | |
be67055b | 1046 | } |
1047 | (*pcstream)<<"fit"<<"\n"; | |
1048 | } | |
1049 | delete pcstream; | |
1050 | } | |
1051 | ||
1052 | ||
1053 | ||
7f4cb119 | 1054 | void AliTPCCorrection::MakeLaserDistortionTree(TTree* tree, TObjArray *corrArray, Int_t itype){ |
1055 | // | |
1056 | // Make a laser fit tree for global minimization | |
1057 | // | |
1058 | const Double_t cutErrY=0.1; | |
1059 | const Double_t cutErrZ=0.1; | |
1060 | const Double_t kEpsilon=0.00000001; | |
1061 | TVectorD *vecdY=0; | |
1062 | TVectorD *vecdZ=0; | |
1063 | TVectorD *veceY=0; | |
1064 | TVectorD *veceZ=0; | |
1065 | AliTPCLaserTrack *ltr=0; | |
1066 | AliTPCLaserTrack::LoadTracks(); | |
1067 | tree->SetBranchAddress("dY.",&vecdY); | |
1068 | tree->SetBranchAddress("dZ.",&vecdZ); | |
1069 | tree->SetBranchAddress("eY.",&veceY); | |
1070 | tree->SetBranchAddress("eZ.",&veceZ); | |
1071 | tree->SetBranchAddress("LTr.",<r); | |
1072 | Int_t entries= tree->GetEntries(); | |
1073 | TTreeSRedirector *pcstream= new TTreeSRedirector("distortion4_0.root"); | |
1074 | Double_t bz=AliTrackerBase::GetBz(); | |
1075 | // | |
1076 | ||
1077 | for (Int_t ientry=0; ientry<entries; ientry++){ | |
1078 | tree->GetEntry(ientry); | |
1079 | if (!ltr->GetVecGX()){ | |
1080 | ltr->UpdatePoints(); | |
1081 | } | |
1082 | TVectorD * delta= (itype==0)? vecdY:vecdZ; | |
1083 | TVectorD * err= (itype==0)? veceY:veceZ; | |
1084 | ||
1085 | for (Int_t irow=0; irow<159; irow++){ | |
1086 | Int_t nentries = 1000; | |
1087 | if (veceY->GetMatrixArray()[irow]>cutErrY||veceZ->GetMatrixArray()[irow]>cutErrZ) nentries=0; | |
1088 | if (veceY->GetMatrixArray()[irow]<kEpsilon||veceZ->GetMatrixArray()[irow]<kEpsilon) nentries=0; | |
1089 | Int_t dtype=4; | |
1090 | Double_t phi =(*ltr->GetVecPhi())[irow]; | |
1091 | Double_t theta =ltr->GetTgl(); | |
1092 | Double_t mean=delta->GetMatrixArray()[irow]; | |
1093 | Double_t gx=0,gy=0,gz=0; | |
1094 | Double_t snp = (*ltr->GetVecP2())[irow]; | |
1095 | Double_t rms = 0.1+err->GetMatrixArray()[irow]; | |
1096 | gx = (*ltr->GetVecGX())[irow]; | |
1097 | gy = (*ltr->GetVecGY())[irow]; | |
1098 | gz = (*ltr->GetVecGZ())[irow]; | |
1099 | Int_t bundle= ltr->GetBundle(); | |
1100 | Double_t dRrec=0; | |
1101 | // | |
1102 | // get delta R used in reconstruction | |
1103 | AliTPCcalibDB* calib=AliTPCcalibDB::Instance(); | |
1104 | AliTPCCorrection * correction = calib->GetTPCComposedCorrection(); | |
1105 | const AliTPCRecoParam * recoParam = calib->GetTransform()->GetCurrentRecoParam(); | |
1106 | Double_t xyz0[3]={gx,gy,gz}; | |
1107 | Double_t oldR=TMath::Sqrt(gx*gx+gy*gy); | |
1108 | // | |
1109 | // old ExB correction | |
1110 | // | |
1111 | if(recoParam&&recoParam->GetUseExBCorrection()) { | |
1112 | Double_t xyz1[3]={gx,gy,gz}; | |
1113 | calib->GetExB()->Correct(xyz0,xyz1); | |
1114 | Double_t newR=TMath::Sqrt(xyz1[0]*xyz1[0]+xyz1[1]*xyz1[1]); | |
1115 | dRrec=oldR-newR; | |
1116 | } | |
1117 | if(recoParam&&recoParam->GetUseComposedCorrection()&&correction) { | |
1118 | Float_t xyz1[3]={gx,gy,gz}; | |
1119 | Int_t sector=(gz>0)?0:18; | |
1120 | correction->CorrectPoint(xyz1, sector); | |
1121 | Double_t newR=TMath::Sqrt(xyz1[0]*xyz1[0]+xyz1[1]*xyz1[1]); | |
1122 | dRrec=oldR-newR; | |
1123 | } | |
1124 | ||
1125 | ||
1126 | (*pcstream)<<"fit"<< | |
1127 | "bz="<<bz<< // magnetic filed used | |
1128 | "dtype="<<dtype<< // detector match type | |
1129 | "ptype="<<itype<< // parameter type | |
1130 | "theta="<<theta<< // theta | |
1131 | "phi="<<phi<< // phi | |
1132 | "snp="<<snp<< // snp | |
1133 | "mean="<<mean<< // mean dist value | |
1134 | "rms="<<rms<< // rms | |
1135 | "gx="<<gx<< // global position | |
1136 | "gy="<<gy<< // global position | |
1137 | "gz="<<gz<< // global position | |
1138 | "dRrec="<<dRrec<< // delta Radius in reconstruction | |
1139 | "id="<<bundle<< //bundle | |
1140 | "entries="<<nentries;// number of entries in bin | |
1141 | // | |
1142 | // | |
1143 | Double_t ky = TMath::Tan(TMath::ASin(snp)); | |
1144 | Int_t ncorr = corrArray->GetEntries(); | |
1145 | Double_t r0 = TMath::Sqrt(gx*gx+gy*gy); | |
1146 | Double_t phi0 = TMath::ATan2(gy,gx); | |
1147 | Double_t distortions[1000]={0}; | |
1148 | Double_t distortionsR[1000]={0}; | |
1149 | for (Int_t icorr=0; icorr<ncorr; icorr++) { | |
1150 | AliTPCCorrection *corr = (AliTPCCorrection*)corrArray->At(icorr); | |
1151 | Float_t distPoint[3]={gx,gy,gz}; | |
1152 | Int_t sector= (gz>0)? 0:18; | |
1153 | if (r0>80){ | |
1154 | corr->DistortPoint(distPoint, sector); | |
1155 | } | |
1b923461 | 1156 | // Double_t value=distPoint[2]-gz; |
7f4cb119 | 1157 | if (itype==0){ |
1158 | Double_t r1 = TMath::Sqrt(distPoint[0]*distPoint[0]+distPoint[1]*distPoint[1]); | |
1159 | Double_t phi1 = TMath::ATan2(distPoint[1],distPoint[0]); | |
1160 | Double_t drphi= r0*(phi1-phi0); | |
1161 | Double_t dr = r1-r0; | |
1162 | distortions[icorr] = drphi-ky*dr; | |
1163 | distortionsR[icorr] = dr; | |
1164 | } | |
1165 | (*pcstream)<<"fit"<< | |
1166 | Form("%s=",corr->GetName())<<distortions[icorr]<< // dump correction value | |
1167 | Form("dR%s=",corr->GetName())<<distortionsR[icorr]; // dump correction R value | |
1168 | } | |
1169 | (*pcstream)<<"fit"<<"\n"; | |
1170 | } | |
1171 | } | |
1172 | delete pcstream; | |
1173 | } | |
1174 | ||
1175 | ||
be67055b | 1176 | |
b1f0a2a5 | 1177 | void AliTPCCorrection::MakeDistortionMap(THnSparse * his0, TTreeSRedirector * const pcstream, const char* hname, Int_t run){ |
8b63d99c | 1178 | // |
1179 | // make a distortion map out ou fthe residual histogram | |
1180 | // Results are written to the debug streamer - pcstream | |
1181 | // Parameters: | |
1182 | // his0 - input (4D) residual histogram | |
1183 | // pcstream - file to write the tree | |
1184 | // run - run number | |
1185 | // marian.ivanov@cern.ch | |
1186 | const Int_t kMinEntries=50; | |
1187 | Int_t nbins1=his0->GetAxis(1)->GetNbins(); | |
1188 | Int_t first1=his0->GetAxis(1)->GetFirst(); | |
1189 | Int_t last1 =his0->GetAxis(1)->GetLast(); | |
1190 | // | |
1191 | Double_t bz=AliTrackerBase::GetBz(); | |
1192 | Int_t idim[4]={0,1,2,3}; | |
1193 | for (Int_t ibin1=first1; ibin1<last1; ibin1++){ //axis 1 - theta | |
1194 | // | |
1195 | his0->GetAxis(1)->SetRange(TMath::Max(ibin1,1),TMath::Min(ibin1,nbins1)); | |
1196 | Double_t x1= his0->GetAxis(1)->GetBinCenter(ibin1); | |
1197 | THnSparse * his1 = his0->Projection(4,idim); // projected histogram according range1 | |
1198 | Int_t nbins3 = his1->GetAxis(3)->GetNbins(); | |
1199 | Int_t first3 = his1->GetAxis(3)->GetFirst(); | |
1200 | Int_t last3 = his1->GetAxis(3)->GetLast(); | |
1201 | // | |
1202 | ||
1203 | for (Int_t ibin3=first3-1; ibin3<last3; ibin3+=1){ // axis 3 - local angle | |
1204 | his1->GetAxis(3)->SetRange(TMath::Max(ibin3-1,1),TMath::Min(ibin3+1,nbins3)); | |
1205 | Double_t x3= his1->GetAxis(3)->GetBinCenter(ibin3); | |
1206 | if (ibin3<first3) { | |
1207 | his1->GetAxis(3)->SetRangeUser(-1,1); | |
1208 | x3=0; | |
1209 | } | |
1210 | THnSparse * his3= his1->Projection(4,idim); //projected histogram according selection 3 | |
1211 | Int_t nbins2 = his3->GetAxis(2)->GetNbins(); | |
1212 | Int_t first2 = his3->GetAxis(2)->GetFirst(); | |
1213 | Int_t last2 = his3->GetAxis(2)->GetLast(); | |
1214 | // | |
1215 | for (Int_t ibin2=first2; ibin2<last2; ibin2+=1){ | |
1216 | his3->GetAxis(2)->SetRange(TMath::Max(ibin2-1,1),TMath::Min(ibin2+1,nbins2)); | |
1217 | Double_t x2= his3->GetAxis(2)->GetBinCenter(ibin2); | |
1218 | TH1 * hisDelta = his3->Projection(0); | |
1219 | // | |
1220 | Double_t entries = hisDelta->GetEntries(); | |
1221 | Double_t mean=0, rms=0; | |
1222 | if (entries>kMinEntries){ | |
1223 | mean = hisDelta->GetMean(); | |
1224 | rms = hisDelta->GetRMS(); | |
1225 | } | |
1226 | (*pcstream)<<hname<< | |
1227 | "run="<<run<< | |
1228 | "bz="<<bz<< | |
1229 | "theta="<<x1<< | |
1230 | "phi="<<x2<< | |
1231 | "snp="<<x3<< | |
1232 | "entries="<<entries<< | |
1233 | "mean="<<mean<< | |
1234 | "rms="<<rms<< | |
1235 | "\n"; | |
1236 | delete hisDelta; | |
1237 | printf("%f\t%f\t%f\t%f\t%f\n",x1,x3,x2, entries,mean); | |
1238 | } | |
1239 | delete his3; | |
1240 | } | |
1241 | delete his1; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | ||
1246 | ||
1247 | ||
1248 | ||
ffab0c37 | 1249 | void AliTPCCorrection::StoreInOCDB(Int_t startRun, Int_t endRun, const char *comment){ |
1250 | // | |
1251 | // Store object in the OCDB | |
1252 | // By default the object is stored in the current directory | |
1253 | // default comment consit of user name and the date | |
1254 | // | |
1255 | TString ocdbStorage=""; | |
1256 | ocdbStorage+="local://"+gSystem->GetFromPipe("pwd")+"/OCDB"; | |
1257 | AliCDBMetaData *metaData= new AliCDBMetaData(); | |
1258 | metaData->SetObjectClassName("AliTPCCorrection"); | |
1259 | metaData->SetResponsible("Marian Ivanov"); | |
1260 | metaData->SetBeamPeriod(1); | |
1261 | metaData->SetAliRootVersion("05-25-01"); //root version | |
1262 | TString userName=gSystem->GetFromPipe("echo $USER"); | |
1263 | TString date=gSystem->GetFromPipe("date"); | |
1264 | ||
1265 | if (!comment) metaData->SetComment(Form("Space point distortion calibration\n User: %s\n Data%s",userName.Data(),date.Data())); | |
1266 | if (comment) metaData->SetComment(comment); | |
1267 | AliCDBId* id1=NULL; | |
1268 | id1=new AliCDBId("TPC/Calib/Correction", startRun, endRun); | |
1269 | AliCDBStorage* gStorage = AliCDBManager::Instance()->GetStorage(ocdbStorage); | |
1270 | gStorage->Put(this, (*id1), metaData); | |
1271 | } | |
1272 | ||
ca58ed4e | 1273 | |
7d85e147 | 1274 | void AliTPCCorrection::FastSimDistortedVertex(Double_t orgVertex[3], Int_t nTracks, AliESDVertex &aV, AliESDVertex &avOrg, AliESDVertex &cV, AliESDVertex &cvOrg, TTreeSRedirector * const pcstream, Double_t etaCuts){ |
ca58ed4e | 1275 | |
1276 | AliVertexerTracks *vertexer = new AliVertexerTracks(5);// 5kGaus | |
1277 | ||
1278 | TObjArray ATrk; // Original Track array of Aside | |
1279 | TObjArray dATrk; // Distorted Track array of A side | |
1280 | UShort_t *AId = new UShort_t[nTracks]; // A side Track ID | |
1281 | TObjArray CTrk; | |
1282 | TObjArray dCTrk; | |
1283 | UShort_t *CId = new UShort_t [nTracks]; | |
1284 | Int_t ID=0; | |
1285 | Double_t mass = TDatabasePDG::Instance()->GetParticle("pi+")->Mass(); | |
7d85e147 | 1286 | TF1 fpt("fpt",Form("x*(1+(sqrt(x*x+%f^2)-%f)/([0]*[1]))^(-[0])",mass,mass),0.4,10); |
ca58ed4e | 1287 | fpt.SetParameters(7.24,0.120); |
1288 | fpt.SetNpx(10000); | |
1289 | for(Int_t nt=0; nt<nTracks; nt++){ | |
1290 | Double_t phi = gRandom->Uniform(0.0, 2*TMath::Pi()); | |
7d85e147 | 1291 | Double_t eta = gRandom->Uniform(-etaCuts, etaCuts); |
ca58ed4e | 1292 | Double_t pt = fpt.GetRandom();// momentum for f1 |
1293 | Short_t sign=1; | |
1294 | if(gRandom->Rndm() < 0.5){ | |
1295 | sign =1; | |
1296 | }else{ | |
1297 | sign=-1; | |
1298 | } | |
1299 | ||
1300 | Double_t theta = 2*TMath::ATan(TMath::Exp(-eta))-TMath::Pi()/2.; | |
1301 | Double_t pxyz[3]; | |
1302 | pxyz[0]=pt*TMath::Cos(phi); | |
1303 | pxyz[1]=pt*TMath::Sin(phi); | |
1304 | pxyz[2]=pt*TMath::Tan(theta); | |
1305 | Double_t cv[21]={0}; | |
1306 | AliExternalTrackParam *t= new AliExternalTrackParam(orgVertex, pxyz, cv, sign); | |
1307 | ||
1308 | Double_t refX=1.; | |
1309 | Int_t dir=-1; | |
1310 | AliExternalTrackParam *td = FitDistortedTrack(*t, refX, dir, NULL); | |
1311 | if (!td) continue; | |
1312 | if (pcstream) (*pcstream)<<"track"<< | |
1313 | "eta="<<eta<< | |
1314 | "theta="<<theta<< | |
1315 | "tOrig.="<<t<< | |
1316 | "td.="<<td<< | |
1317 | "\n"; | |
7d85e147 | 1318 | if(( eta>0.07 )&&( eta<etaCuts )) { // - log(tan(0.5*theta)), theta = 0.5*pi - ATan(5.0/80.0) |
ca58ed4e | 1319 | if (td){ |
1320 | dATrk.AddLast(td); | |
1321 | ATrk.AddLast(t); | |
1322 | Int_t nn=ATrk.GetEntriesFast(); | |
1323 | AId[nn]=ID; | |
1324 | } | |
7d85e147 | 1325 | }else if(( eta<-0.07 )&&( eta>-etaCuts )){ |
ca58ed4e | 1326 | if (td){ |
1327 | dCTrk.AddLast(td); | |
1328 | CTrk.AddLast(t); | |
1329 | Int_t nn=CTrk.GetEntriesFast(); | |
1330 | CId[nn]=ID; | |
1331 | } | |
1332 | } | |
1333 | ID++; | |
1334 | }// end of track loop | |
1335 | ||
1336 | vertexer->SetTPCMode(); | |
1337 | vertexer->SetConstraintOff(); | |
1338 | ||
1339 | aV = *((AliESDVertex*)vertexer->FindPrimaryVertex(&dATrk,AId)); | |
1340 | avOrg = *((AliESDVertex*)vertexer->FindPrimaryVertex(&ATrk,AId)); | |
1341 | cV = *((AliESDVertex*)vertexer->FindPrimaryVertex(&dCTrk,CId)); | |
1342 | cvOrg = *((AliESDVertex*)vertexer->FindPrimaryVertex(&CTrk,CId)); | |
1343 | if (pcstream) (*pcstream)<<"vertex"<< | |
1344 | "x="<<orgVertex[0]<< | |
1345 | "y="<<orgVertex[1]<< | |
1346 | "z="<<orgVertex[2]<< | |
1347 | "av.="<<&aV<< // distorted vertex A side | |
1348 | "cv.="<<&cV<< // distroted vertex C side | |
1349 | "avO.="<<&avOrg<< // original vertex A side | |
1350 | "cvO.="<<&cvOrg<< | |
1351 | "\n"; | |
1352 | delete []AId; | |
1353 | delete []CId; | |
1354 | } | |
f1817479 | 1355 | |
1356 | void AliTPCCorrection::AddVisualCorrection(AliTPCCorrection* corr, Int_t position){ | |
1357 | // | |
1358 | // make correction available for visualization using | |
1359 | // TFormula, TFX and TTree::Draw | |
1360 | // important in order to check corrections and also compute dervied variables | |
1361 | // e.g correction partial derivatives | |
1362 | // | |
1363 | // NOTE - class is not owner of correction | |
1364 | // | |
1365 | if (!fgVisualCorrection) fgVisualCorrection=new TObjArray; | |
1366 | fgVisualCorrection->AddAt(corr, position); | |
1367 | } | |
1368 | ||
1369 | ||
1370 | ||
1371 | Double_t AliTPCCorrection::GetCorrSector(Double_t sector, Double_t localX, Double_t kZ, Int_t axisType, Int_t corrType){ | |
1372 | // | |
1373 | // calculate the correction at given position - check the geffCorr | |
1374 | // | |
1375 | if (!fgVisualCorrection) return 0; | |
1376 | AliTPCCorrection *corr = (AliTPCCorrection*)fgVisualCorrection->At(corrType); | |
1377 | if (!corr) return 0; | |
1378 | Double_t phi=sector*TMath::Pi()/9.; | |
1379 | Double_t gx = localX*TMath::Cos(phi); | |
1380 | Double_t gy = localX*TMath::Sin(phi); | |
1381 | Double_t gz = localX*kZ; | |
1382 | Int_t nsector=(gz>0) ? 0:18; | |
1383 | // | |
1384 | // | |
1385 | // | |
1386 | Float_t distPoint[3]={gx,gy,gz}; | |
1387 | corr->DistortPoint(distPoint, nsector); | |
1388 | Double_t r0=TMath::Sqrt(gx*gx+gy*gy); | |
1389 | Double_t r1=TMath::Sqrt(distPoint[0]*distPoint[0]+distPoint[1]*distPoint[1]); | |
1390 | Double_t phi0=TMath::ATan2(gy,gx); | |
1391 | Double_t phi1=TMath::ATan2(distPoint[1],distPoint[0]); | |
1392 | if (axisType==0) return r1-r0; | |
1393 | if (axisType==1) return (phi1-phi0)*r0; | |
1394 | if (axisType==2) return distPoint[2]-gz; | |
1395 | return phi1-phi0; | |
1396 | } | |
1397 | ||
1398 | Double_t AliTPCCorrection::GetCorrXYZ(Double_t gx, Double_t gy, Double_t gz, Int_t axisType, Int_t corrType){ | |
1399 | // | |
1400 | // return correction at given x,y,z | |
1401 | // | |
1402 | if (!fgVisualCorrection) return 0; | |
1403 | AliTPCCorrection *corr = (AliTPCCorrection*)fgVisualCorrection->At(corrType); | |
1404 | if (!corr) return 0; | |
1405 | Double_t phi0= TMath::ATan2(gy,gx); | |
1406 | Int_t nsector=(gz>0) ? 0:18; | |
1407 | Float_t distPoint[3]={gx,gy,gz}; | |
1408 | corr->DistortPoint(distPoint, nsector); | |
1409 | Double_t r0=TMath::Sqrt(gx*gx+gy*gy); | |
1410 | Double_t r1=TMath::Sqrt(distPoint[0]*distPoint[0]+distPoint[1]*distPoint[1]); | |
1411 | Double_t phi1=TMath::ATan2(distPoint[1],distPoint[0]); | |
1412 | if (axisType==0) return r1-r0; | |
1413 | if (axisType==1) return (phi1-phi0)*r0; | |
1414 | if (axisType==2) return distPoint[2]-gz; | |
1415 | return phi1-phi0; | |
1416 | } |