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2 | /************************************************************************** | |
3 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
16 | ||
17 | //////////////////////////////////////////////////////////////////////////////// | |
18 | // // | |
19 | // AliTPCComposedCorrection class // | |
20 | // // | |
21 | // This class is creating a correction that is composed out of smaller // | |
22 | // corrections. // | |
23 | // There are two ways the sub-corrections can be combined into this one: // | |
24 | // 1. kParallel: All corrections are applied at the given position x and // | |
25 | // the dx terms are summed up (this commutes). // | |
26 | // 2. kQueue: The corrections are called in order. The first one at the // | |
27 | // given position x resulting in dx1, the second one is called at // | |
28 | // the corrected position (x+dx1) resulting in dx2, the third one // | |
29 | // is then called at position (x+dx1+dx2) and so forth. dx=dx1+dx2+... // | |
30 | // is returned. // | |
0f236b4e | 31 | // 3. kQueueResidual: like kQueue with the exception that in case of // |
32 | // a positive weight the 'Distortion' is called and in case of a negative // | |
33 | // weight the 'Correction' is called, where the absolute of the weight // | |
34 | // will be applied to the correction | |
0116859c | 35 | // For the inverse of the correction this is taken into account by reversing // |
36 | // the order the corrections are applied in the kQueue case (no issue for // | |
37 | // kParallel). // | |
38 | // // | |
39 | // date: 27/04/2010 // | |
40 | // Authors: Magnus Mager, Stefan Rossegger, Jim Thomas // | |
41 | // // | |
42 | // Example usage: // | |
43 | // // | |
44 | // AliMagF mag("mag","mag"); // | |
45 | // AliTPCExBBShape exb; // B field shape distortions // | |
46 | // exb.SetBField(&mag); // | |
47 | // // | |
48 | // AliTPCExBTwist twist; // ExB Twist distortions // | |
49 | // twist.SetXTwist(0.001); // | |
50 | // // | |
51 | // TObjArray cs; cs.Add(&exb); cs.Add(&twist); // | |
52 | // // | |
53 | // AliTPCComposedCorrection cc; // | |
54 | // cc.SetCorrections(&cs); // | |
55 | // cc.SetOmegaTauT1T2(wt,T1,T2); // | |
56 | // cc.Print("DA"); // | |
57 | // cc.CreateHistoDRPhiinZR(0,100,100)->Draw("surf2"); // | |
58 | //////////////////////////////////////////////////////////////////////////////// | |
59 | ||
60 | ||
61 | #include <TCollection.h> | |
e527a1b9 | 62 | #include <TTimeStamp.h> |
b1f0a2a5 | 63 | #include <TIterator.h> |
0f236b4e | 64 | #include <TMath.h> |
c9cbd2f2 | 65 | #include "AliLog.h" |
0116859c | 66 | |
67 | #include "AliTPCComposedCorrection.h" | |
68 | ||
69 | ||
70 | AliTPCComposedCorrection::AliTPCComposedCorrection() | |
71 | : AliTPCCorrection("composed_correction", | |
72 | "composition of corrections"), | |
73 | fCorrections(0), | |
cfe2c39a | 74 | fMode(kParallel), |
75 | fWeights(0) // weights of corrections | |
0116859c | 76 | { |
77 | // | |
78 | // default constructor | |
79 | // | |
80 | } | |
81 | ||
82 | AliTPCComposedCorrection::AliTPCComposedCorrection(TCollection *corrections, | |
83 | AliTPCComposedCorrection::CompositionType mode) | |
84 | : AliTPCCorrection("composed_correction", | |
85 | "composition of corrections"), | |
86 | fCorrections(corrections), | |
cfe2c39a | 87 | fMode(mode), |
88 | fWeights(0) //weights of correction | |
0116859c | 89 | { |
90 | // | |
91 | // Constructor that defines the set of corrections, this one is composed of. | |
92 | // | |
93 | } | |
94 | ||
95 | AliTPCComposedCorrection::~AliTPCComposedCorrection() { | |
96 | // | |
c9cbd2f2 | 97 | // destructor |
0116859c | 98 | // |
c9cbd2f2 | 99 | if (!fCorrections) { |
100 | AliInfo("No Correction-models were set: can not delete them"); | |
101 | } else { | |
102 | TIterator *i=fCorrections->MakeIterator(); | |
103 | AliTPCCorrection *c; | |
104 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
105 | delete c; | |
106 | } | |
107 | delete i; | |
108 | } | |
cfe2c39a | 109 | if (fWeights) delete fWeights; |
0116859c | 110 | } |
111 | ||
72bb0bb7 | 112 | AliTPCCorrection * AliTPCComposedCorrection::GetSubCorrection(Int_t ipos){ |
113 | // | |
114 | // | |
115 | // | |
116 | TObjArray *arr = (TObjArray*)fCorrections; | |
117 | return (AliTPCCorrection *)arr->At(ipos); | |
118 | } | |
119 | ||
120 | AliTPCCorrection * AliTPCComposedCorrection::GetSubCorrection(const char *cname){ | |
121 | // | |
122 | // | |
123 | // | |
124 | TCollection *arr = fCorrections; | |
125 | return (AliTPCCorrection *)arr->FindObject(cname); | |
126 | } | |
127 | ||
128 | ||
0116859c | 129 | |
130 | void AliTPCComposedCorrection::GetCorrection(const Float_t x[],const Short_t roc,Float_t dx[]) { | |
131 | // | |
132 | // This applies all correction and the specified manner (see general | |
133 | // class description for details). | |
134 | // | |
c9cbd2f2 | 135 | |
136 | if (!fCorrections) { | |
137 | AliInfo("No Corrections-models were set: can not calculate distortions"); | |
138 | return; | |
139 | } | |
cfe2c39a | 140 | TIterator *i=fCorrections->MakeIterator(); |
0116859c | 141 | AliTPCCorrection *c; |
cfe2c39a | 142 | Int_t weightIndex=0; |
0116859c | 143 | switch (fMode) { |
144 | case kParallel: | |
145 | Float_t dxi[3]; | |
146 | for (int j=0;j<3;++j) dx[j]=0.; | |
147 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
148 | c->GetCorrection(x,roc,dxi); | |
cfe2c39a | 149 | Double_t w=1; |
150 | if (fWeights) w=(*fWeights)[weightIndex++]; | |
151 | for (Int_t j=0;j<3;++j) dx[j]+=w*dxi[j]; | |
0116859c | 152 | } |
153 | break; | |
154 | case kQueue: | |
155 | Float_t xi[3]; | |
156 | for (Int_t j=0;j<3;++j) xi[j]=x[j]; | |
157 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
158 | c->GetCorrection(xi,roc,dx); | |
cfe2c39a | 159 | Double_t w=1; |
160 | if (fWeights) w=(*fWeights)[weightIndex++]; | |
161 | for (Int_t j=0;j<3;++j) xi[j]+=w*dx[j]; | |
0116859c | 162 | } |
163 | for (Int_t j=0;j<3;++j) dx[j]=xi[j]-x[j]; | |
164 | break; | |
0f236b4e | 165 | case kQueueResidual: |
166 | //TODO: for the moment assume inverse of distortion | |
167 | // check if this is what is desired | |
168 | GetDistortion(x,roc,dx); | |
169 | for (Int_t j=0;j<3;++j) dx[j]*=-1.; | |
170 | break; | |
0116859c | 171 | } |
172 | delete i; | |
173 | } | |
174 | ||
175 | void AliTPCComposedCorrection::GetDistortion(const Float_t x[],const Short_t roc,Float_t dx[]) { | |
176 | // | |
177 | // This applies all distortions and the specified manner (see general | |
178 | // class descxiption for details). | |
179 | // | |
180 | ||
c9cbd2f2 | 181 | if (!fCorrections) { |
182 | AliInfo("No Corrections-models were set: can not calculate distortions"); | |
183 | return; | |
184 | } | |
0f236b4e | 185 | |
186 | if (fMode==kQueueResidual && !fWeights) { | |
187 | AliInfo("kQueueResidual mode was selected but no weights were given. Switching to kQueue instead."); | |
188 | fMode=kQueue; | |
189 | } | |
190 | ||
0116859c | 191 | TIterator *i=fCorrections->MakeReverseIterator(); |
192 | AliTPCCorrection *c; | |
cfe2c39a | 193 | Int_t weightIndex=0; |
0116859c | 194 | switch (fMode) { |
195 | case kParallel: | |
196 | Float_t dxi[3]; | |
197 | for (int j=0;j<3;++j) dx[j]=0.; | |
198 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
199 | c->GetDistortion(x,roc,dxi); | |
cfe2c39a | 200 | Double_t w=1; |
201 | if (fWeights) w=(*fWeights)[weightIndex++]; | |
202 | for (Int_t j=0;j<3;++j) dx[j]+=w*dxi[j]; | |
0116859c | 203 | } |
204 | break; | |
205 | case kQueue: | |
206 | Float_t xi[3]; | |
207 | for (Int_t j=0;j<3;++j) xi[j]=x[j]; | |
208 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
209 | c->GetDistortion(xi,roc,dx); | |
cfe2c39a | 210 | Double_t w=1; |
211 | if (fWeights) w=(*fWeights)[weightIndex++]; | |
212 | for (Int_t j=0;j<3;++j) xi[j]+=w*dx[j]; | |
0116859c | 213 | } |
214 | for (Int_t j=0;j<3;++j) dx[j]=xi[j]-x[j]; | |
215 | break; | |
0f236b4e | 216 | case kQueueResidual: |
217 | Float_t xi2[3]; | |
218 | for (Int_t j=0;j<3;++j) xi2[j]=x[j]; | |
219 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
220 | Double_t w=(*fWeights)[weightIndex++]; | |
221 | if (w>0) c->GetDistortion(xi2,roc,dx); | |
222 | else c->GetCorrection(xi2,roc,dx); | |
223 | for (Int_t j=0;j<3;++j) xi2[j]+=TMath::Abs(w)*dx[j]; | |
224 | } | |
225 | for (Int_t j=0;j<3;++j) dx[j]=xi2[j]-x[j]; | |
226 | break; | |
0116859c | 227 | } |
228 | delete i; | |
229 | } | |
230 | ||
231 | ||
232 | void AliTPCComposedCorrection::Print(Option_t* option) const { | |
233 | // | |
234 | // Print function to check which correction classes are used | |
235 | // option=="d" prints details regarding the setted magnitude | |
236 | // option=="a" prints the C0 and C1 coefficents for calibration purposes | |
237 | // | |
238 | ||
239 | printf("Composed TPC spacepoint correction \"%s\" -- composed of:\n",GetTitle()); | |
240 | TString opt = option; opt.ToLower(); | |
241 | Int_t in=1; | |
c9cbd2f2 | 242 | if (!fCorrections) { |
243 | printf(" - composed correction is empty!\n"); | |
244 | return; | |
245 | } | |
0116859c | 246 | TIterator *i=fCorrections->MakeIterator(); |
247 | AliTPCCorrection *c; | |
248 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
249 | if (opt.Contains("d")) { | |
0b736a46 | 250 | printf("\n"); |
251 | printf("%d. %s\t%s\n",in,c->GetTitle(), c->GetName()); | |
0116859c | 252 | c->Print(option); |
253 | } else { | |
0b736a46 | 254 | printf("%d. %s\t%s\n",in,c->GetTitle(), c->GetName()); |
0116859c | 255 | } |
256 | ++in; | |
257 | } | |
e527a1b9 | 258 | if (in==1) printf(" Info: The correction compound is empty: No corrections set\n"); |
0116859c | 259 | delete i; |
260 | } | |
261 | ||
262 | ||
e527a1b9 | 263 | void AliTPCComposedCorrection::Init() { |
264 | // | |
265 | // Initialization funtion (not used at the moment) | |
266 | // | |
c9cbd2f2 | 267 | if (!fCorrections) { |
268 | AliInfo("No Correction-models were set"); | |
269 | return; | |
270 | } | |
e527a1b9 | 271 | TIterator *i=fCorrections->MakeIterator(); |
272 | AliTPCCorrection *c; | |
273 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) | |
274 | c->Init(); | |
275 | delete i; | |
276 | ||
277 | } | |
278 | ||
279 | void AliTPCComposedCorrection::Update(const TTimeStamp &timeStamp) { | |
280 | // | |
281 | // Update function | |
282 | // | |
c9cbd2f2 | 283 | if (!fCorrections) { |
284 | AliInfo("No Correction-models were set"); | |
285 | return; | |
286 | } | |
e527a1b9 | 287 | |
288 | TIterator *i=fCorrections->MakeIterator(); | |
289 | AliTPCCorrection *c; | |
290 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) | |
291 | c->Update(timeStamp); | |
292 | delete i; | |
293 | ||
294 | } | |
295 | ||
296 | ||
297 | ||
0116859c | 298 | void AliTPCComposedCorrection::SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2) { |
299 | // | |
300 | // Gives the possibility to set the OmegaTau plus Tensor corrections T1 and T2 (effective omega Tau) | |
301 | // to each subcorrection (since they might become event specific due to changing drift velocity) | |
302 | // | |
303 | // The omegaTau comes idealy from the Database, since it is a function of drift velocity, B and E field | |
304 | // e.g. omegaTau = -10.0 * Bz * vdrift / Ez ; // with Bz in kG and Ez in V/cm | |
305 | // omegaTau = -0.325 for Bz=5kG, Ez=400V/cm and vdrift = 2.6cm/muSec | |
306 | // The T1 and T2 tensors were measured in a dedicated calibration run | |
307 | // | |
308 | // Note: overwrites previously set values! | |
309 | // | |
310 | ||
c9cbd2f2 | 311 | if (!fCorrections) { |
312 | AliInfo("No Correction-models were set"); | |
313 | return; | |
314 | } | |
315 | ||
0116859c | 316 | TIterator *i=fCorrections->MakeIterator(); |
317 | AliTPCCorrection *c; | |
318 | while (0!=(c=dynamic_cast<AliTPCCorrection*>(i->Next()))) { | |
319 | c->SetOmegaTauT1T2(omegaTau,t1,t2); | |
320 | } | |
321 | delete i; | |
322 | } | |
323 | ||
324 | ClassImp(AliTPCComposedCorrection) |