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cc80f89e 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$Log$
c11cb93f 18Revision 1.3 2000/06/30 12:07:50 kowal2
19Updated from the TPC-PreRelease branch
20
73042f01 21Revision 1.2.4.2 2000/06/14 16:48:24 kowal2
22Parameter setting improved. Removed compiler warnings
23
24Revision 1.2.4.1 2000/06/09 07:55:39 kowal2
25
26Updated defaults
27
28Revision 1.2 2000/04/17 09:37:33 kowal2
29removed obsolete AliTPCDigitsDisplay.C
30
cc80f89e 31Revision 1.1.4.2 2000/04/10 11:36:13 kowal2
32
33New Detector parameters handling class
34
35*/
36
37///////////////////////////////////////////////////////////////////////
38// Manager and of geomety classes for set: TPC //
39// //
40// !sectors are numbered from 0 //
41// !pad rows are numbered from 0 //
42//
43// 27.7. - AliTPCPaaramSr object for TPC
44// TPC with straight pad rows
45// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
46// //
47///////////////////////////////////////////////////////////////////////
48
49
50#include <iostream.h>
51#include <TMath.h>
52#include <TObject.h>
53#include <AliTPCParamSR.h>
73042f01 54#include "AliTPCPRF2D.h"
55#include "AliTPCRF1D.h"
cc80f89e 56
57
58
59ClassImp(AliTPCParamSR)
60const static Int_t kMaxRows=600;
61const static Float_t kEdgeSectorSpace = 2.5;
73042f01 62const static Float_t kFacSigmaPadRow=3.;
cc80f89e 63const static Float_t kFacSigmaPad=3.;
64const static Float_t kFacSigmaTime=3.;
65
66
67AliTPCParamSR::AliTPCParamSR()
68{
69 //
70 //constructor set the default parameters
71 fInnerPRF=0;
72 fOuterPRF=0;
73 fTimeRF = 0;
74 fFacSigmaPadRow = Float_t(kFacSigmaPadRow);
75 fFacSigmaPad = Float_t(kFacSigmaPad);
76 fFacSigmaTime = Float_t(kFacSigmaTime);
cc80f89e 77 SetDefault();
78 Update();
79}
80
81AliTPCParamSR::~AliTPCParamSR()
82{
83 //
84 //destructor destroy some dynmicaly alocated variables
85 if (fInnerPRF != 0) delete fInnerPRF;
86 if (fOuterPRF != 0) delete fOuterPRF;
87 if (fTimeRF != 0) delete fTimeRF;
88}
89
90void AliTPCParamSR::SetDefault()
91{
92 //set default TPC param
93 fbStatus = kFALSE;
94 AliTPCParam::SetDefault();
95}
96
97Int_t AliTPCParamSR::CalcResponse(Float_t* xyz, Int_t * index, Int_t row)
98{
99 //
100 //calculate bin response as function of the input position -x
101 //return number of valid response bin
102 //
103 //we suppose that coordinate is expressed in float digits
104 // it's mean coordinate system 8
105 //xyz[0] - float padrow xyz[1] is float pad (center pad is number 0) and xyz[2] is float time bin
106 if ( (fInnerPRF==0)||(fOuterPRF==0)||(fTimeRF==0) ){
107 Error("AliTPCParamSR", "response function was not adjusted");
108 return -1;
109 }
110
111 Float_t sfpadrow; // sigma of response function
112 Float_t sfpad; // sigma of
113 Float_t sftime= fFacSigmaTime*fTimeRF->GetSigma()/fZWidth; //3 sigma of time response
114 if (index[1]<fNInnerSector){
115 sfpadrow =fFacSigmaPadRow*fInnerPRF->GetSigmaY()/fInnerPadPitchLength;
116 sfpad =fFacSigmaPad*fInnerPRF->GetSigmaX()/fInnerPadPitchWidth;
117 }else{
118 sfpadrow =fFacSigmaPadRow*fOuterPRF->GetSigmaY()/fOuterPadPitchLength;
119 sfpad =fFacSigmaPad*fOuterPRF->GetSigmaX()/fOuterPadPitchWidth;
120 }
121
122 Int_t fpadrow = TMath::Max(TMath::Nint(index[2]+xyz[0]-sfpadrow),0); //"first" padrow
123 Int_t fpad = TMath::Nint(xyz[1]-sfpad); //first pad
124 Int_t ftime = TMath::Max(TMath::Nint(xyz[2]+GetZOffset()/GetZWidth()-sftime),0); // first time
125 Int_t lpadrow = TMath::Min(TMath::Nint(index[2]+xyz[0]+sfpadrow),fpadrow+19); //"last" padrow
126 lpadrow = TMath::Min(GetNRow(index[1])-1,lpadrow);
127 Int_t lpad = TMath::Min(TMath::Nint(xyz[1]+sfpad),fpad+19); //last pad
128 Int_t ltime = TMath::Min(TMath::Nint(xyz[2]+GetZOffset()/GetZWidth()+sftime),ftime+19); // last time
129 ltime = TMath::Min(ltime,GetMaxTBin()-1);
130
131 if (row>=0) { //if we are interesting about given pad row
132 if (fpadrow<=row) fpadrow =row;
133 else
134 return 0;
135 if (lpadrow>=row) lpadrow = row;
136 else
137 return 0;
138 }
139
140
141 Float_t padres[20][20]; //I don't expect bigger number of bins
142 Float_t timeres[20];
143 Int_t cindex3=0;
144 Int_t cindex=0;
145 Float_t cweight = 0;
146 if (fpadrow>=0) {
147 //calculate padresponse function
148 Int_t padrow, pad;
149 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
150 for (pad = fpad;pad<=lpad;pad++){
151 Float_t dy = (-xyz[0]+Float_t(index[2]-padrow));
152 Float_t dx = (-xyz[1]+Float_t(pad));
153 if (index[1]<fNInnerSector)
154 padres[padrow-fpadrow][pad-fpad]=fInnerPRF->GetPRF(dx*fInnerPadPitchWidth,dy*fInnerPadPitchLength);
155 else
156 padres[padrow-fpadrow][pad-fpad]=fOuterPRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuterPadPitchLength); }
157 //calculate time response function
158 Int_t time;
159 for (time = ftime;time<=ltime;time++)
160 timeres[time-ftime]= fTimeRF->GetRF((-xyz[2]+Float_t(time))*fZWidth);
161 //write over threshold values to stack
162 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
163 for (pad = fpad;pad<=lpad;pad++)
164 for (time = ftime;time<=ltime;time++){
165 cweight = timeres[time-ftime]*padres[padrow-fpadrow][pad-fpad];
166 if (cweight>fResponseThreshold) {
167 fResponseBin[cindex3]=padrow;
168 fResponseBin[cindex3+1]=pad;
169 fResponseBin[cindex3+2]=time;
170 cindex3+=3;
171 fResponseWeight[cindex]=cweight;
172 cindex++;
173 }
174 }
175 }
176 fCurrentMax=cindex;
177 return fCurrentMax;
178}
179
180void AliTPCParamSR::TransformTo8(Float_t *xyz, Int_t *index) const
181{
182 //
183 // transformate point to digit coordinate
184 //
185 if (index[0]==0) Transform0to1(xyz,index);
186 if (index[0]==1) Transform1to2(xyz,index);
187 if (index[0]==2) Transform2to3(xyz,index);
188 if (index[0]==3) Transform3to4(xyz,index);
189 if (index[0]==4) Transform4to8(xyz,index);
190}
191
192void AliTPCParamSR::TransformTo2(Float_t *xyz, Int_t *index) const
193{
194 //
195 //transformate point to rotated coordinate
196 //
197 //we suppose that
198 if (index[0]==0) Transform0to1(xyz,index);
199 if (index[0]==1) Transform1to2(xyz,index);
200 if (index[0]==4) Transform4to3(xyz,index);
201 if (index[0]==8) { //if we are in digit coordinate system transform to global
202 Transform8to4(xyz,index);
203 Transform4to3(xyz,index);
204 }
205}
206
207void AliTPCParamSR::CRXYZtoXYZ(Float_t *xyz,
208 const Int_t &sector, const Int_t & padrow, Int_t option) const
209{
210 //transform relative coordinates to absolute
211 Bool_t rel = ( (option&2)!=0);
212 Int_t index[2]={sector,padrow};
213 if (rel==kTRUE) Transform4to3(xyz,index);//if the position is relative to pad row
214 Transform2to1(xyz,index);
215}
216
217void AliTPCParamSR::XYZtoCRXYZ(Float_t *xyz,
218 Int_t &sector, Int_t & padrow, Int_t option) const
219{
220 //transform global position to the position relative to the sector padrow
221 //if option=0 X calculate absolute calculate sector
222 //if option=1 X absolute use input sector
223 //if option=2 X relative to pad row calculate sector
224 //if option=3 X relative use input sector
225 //!!!!!!!!! WE start to calculate rows from row = 0
226 Int_t index[2];
227 Bool_t rel = ( (option&2)!=0);
228
229 //option 0 and 2 means that we don't have information about sector
230 if ((option&1)==0) Transform0to1(xyz,index); //we calculate sector number
231 else
232 index[0]=sector;
233 Transform1to2(xyz,index);
234 Transform2to3(xyz,index);
235 //if we store relative position calculate position relative to pad row
236 if (rel==kTRUE) Transform3to4(xyz,index);
237 sector = index[0];
238 padrow = index[1];
239}
240
241Float_t AliTPCParamSR::GetPrimaryLoss(Float_t *x, Int_t *index, Float_t *angle)
242{
243 //
244 //
245 Float_t padlength=GetPadPitchLength(index[1]);
246 Float_t a1=TMath::Sin(angle[0]);
247 a1*=a1;
248 Float_t a2=TMath::Sin(angle[1]);
249 a2*=a2;
250 Float_t length =padlength*TMath::Sqrt(1+a1+a2);
251 return length*fNPrimLoss;
252}
253
254Float_t AliTPCParamSR::GetTotalLoss(Float_t *x, Int_t *index, Float_t *angle)
255{
256 //
257 //
258 Float_t padlength=GetPadPitchLength(index[1]);
259 Float_t a1=TMath::Sin(angle[0]);
260 a1*=a1;
261 Float_t a2=TMath::Sin(angle[1]);
262 a2*=a2;
263 Float_t length =padlength*TMath::Sqrt(1+a1+a2);
264 return length*fNTotalLoss;
265
266}
267
268
269void AliTPCParamSR::GetClusterSize(Float_t *x, Int_t *index, Float_t *angle, Int_t mode, Float_t *sigma)
270{
271 //
272 //return cluster sigma2 (x,y) for particle at position x
273 // in this case x coordinata is in drift direction
274 //and y in pad row direction
275 //we suppose that input coordinate system is digit system
276
277 Float_t xx;
278 Float_t lx[3] = {x[0],x[1],x[2]};
279 Int_t li[3] = {index[0],index[1],index[2]};
280 TransformTo2(lx,li);
281 // Float_t sigmadiff;
282 sigma[0]=0;
283 sigma[1]=0;
284
285 xx = lx[2]; //calculate drift length in cm
286 if (xx>0) {
287 sigma[0]+= xx*GetDiffL()*GetDiffL();
288 sigma[1]+= xx*GetDiffT()*GetDiffT();
289 }
290
291
292 //sigma[0]=sigma[1]=0;
293 if (GetTimeRF()!=0) sigma[0]+=GetTimeRF()->GetSigma()*GetTimeRF()->GetSigma();
294 if ( (index[1]<fNInnerSector) &&(GetInnerPRF()!=0))
295 sigma[1]+=GetInnerPRF()->GetSigmaX()*GetInnerPRF()->GetSigmaX();
296 if ( (index[1]>=fNInnerSector) && (GetOuterPRF()!=0))
297 sigma[1]+=GetOuterPRF()->GetSigmaX()*GetOuterPRF()->GetSigmaX();
298
299
300 sigma[0]/= GetZWidth()*GetZWidth();
301 sigma[1]/=GetPadPitchWidth(index[0])*GetPadPitchWidth(index[0]);
302}
303
304
305
306
307void AliTPCParamSR::GetSpaceResolution(Float_t *x, Int_t *index, Float_t *angle,
308 Float_t amplitude, Int_t mode, Float_t *sigma)
309{
310 //
311 //
312 //
313
314}
315Float_t AliTPCParamSR::GetAmp(Float_t *x, Int_t *index, Float_t *angle)
316{
317 //
318 //
319 //
320 return 0;
321}
322
323Float_t * AliTPCParamSR::GetAnglesAccMomentum(Float_t *x, Int_t * index, Float_t* momentum, Float_t *angle)
324{
325 //
326 //calculate angle of track to padrow at given position
327 // for given magnetic field and momentum of the particle
328 //
329
330 TransformTo2(x,index);
331 AliDetectorParam::GetAnglesAccMomentum(x,index,momentum,angle);
332 Float_t addangle = TMath::ASin(x[1]/GetPadRowRadii(index[1],index[2]));
333 angle[1] +=addangle;
334 return angle;
335}
336
337
338Bool_t AliTPCParamSR::Update()
339{
340
341 //
342 // update some calculated parameter which must be updated after changing "base"
343 // parameters
344 // for example we can change size of pads and according this recalculate number
345 // of pad rows, number of of pads in given row ....
346 Int_t i;
347 if (AliTPCParam::Update()==kFALSE) return kFALSE;
348 fbStatus = kFALSE;
349
350 // adjust lower sectors pad row positions and pad numbers
351 fNRowLow = (Int_t(1.001+((fRInnerLastWire-fRInnerFirstWire)/fInnerWWPitch))
352 -2*fInnerDummyWire)/fNInnerWiresPerPad;
353 if ( kMaxRows<fNRowLow) fNRowUp = kMaxRows;
354 if (1>fNRowLow) return kFALSE;
355
356 //Float_t firstpad = fRInnerFirstWire+(fInnerDummyWire-0.5)*fInnerWWPitch
357 // +fInnerPadPitchLength/2.;
358 Float_t lastpad = fRInnerLastWire-(fInnerDummyWire-0.5)*fInnerWWPitch
359 -fInnerPadPitchLength/2.;
c11cb93f 360 Float_t firstpad = lastpad-Float_t(fNRowLow-1)*fInnerPadPitchLength;
cc80f89e 361 for (i = 0;i<fNRowLow;i++)
362 {
363 Float_t x = firstpad +fInnerPadPitchLength*(Float_t)i;
364 Float_t y = (x-0.5*fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerWireMount-
365 fInnerPadPitchWidth/2.;
366 fPadRowLow[i] = x;
367 fNPadsLow[i] = 1+2*(Int_t)(y/fInnerPadPitchWidth) ;
368 }
369
370 // adjust upper sectors pad row positions and pad numbers
371 fNRowUp = (Int_t(1.001+((fROuterLastWire-fROuterFirstWire)/fOuterWWPitch))
372 -2*fOuterDummyWire)/fNOuterWiresPerPad;
373 if ( kMaxRows<fNRowUp) fNRowUp = kMaxRows;
374 if (1>fNRowUp) return kFALSE;
375 firstpad = fROuterFirstWire+(fOuterDummyWire-0.5)*fOuterWWPitch
376 +fOuterPadPitchLength/2.;
377
378 for (i = 0;i<fNRowUp;i++)
379 {
380 Float_t x = firstpad + fOuterPadPitchLength*(Float_t)i;
381 Float_t y = (x-0.5*fOuterPadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount-
382 fInnerPadPitchWidth/2.;
383 fPadRowUp[i] = x;
384 fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
385 }
386 fNtRows = fNInnerSector*fNRowLow+fNOuterSector*fNRowUp;
c11cb93f 387 fbStatus = kTRUE;
cc80f89e 388 return kTRUE;
389}
390
391
cc80f89e 392void AliTPCParamSR::Streamer(TBuffer &R__b)
393{
394 // Stream an object of class AliTPC.
395
396 if (R__b.IsReading()) {
397 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
398 // TObject::Streamer(R__b);
399 AliTPCParam::Streamer(R__b);
400 // if (R__v < 2) return;
401 Update();
402 } else {
403 R__b.WriteVersion(AliTPCParamSR::IsA());
404 //TObject::Streamer(R__b);
405 AliTPCParam::Streamer(R__b);
406 }
407}
408
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