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[u/mrichter/AliRoot.git] / TPC / AliTPCParamCR.cxx
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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
88cb7938 16/* $Id$ */
cc80f89e 17
18///////////////////////////////////////////////////////////////////////
19// Manager and of geomety classes for set: TPC //
20// //
21// !sectors are numbered from 0 //
22// !pad rows are numbered from 0 //
23//
24// 27.7. - AliTPCPaaramSr object for TPC
25// TPC with straight pad rows
26// Origin: Marian Ivanov, Uni. of Bratislava, ivanov@fmph.uniba.sk //
27// //
28///////////////////////////////////////////////////////////////////////
29
30
19364939 31#include <Riostream.h>
cc80f89e 32#include <TMath.h>
2ab0c725 33#include <TClass.h>
cc80f89e 34#include <AliTPCParamCR.h>
73042f01 35#include "AliTPCPRF2D.h"
36#include "AliTPCRF1D.h"
cc80f89e 37
38
39
40ClassImp(AliTPCParamCR)
41const static Int_t kMaxRows=600;
42const static Float_t kEdgeSectorSpace = 2.5;
43
44AliTPCParamCR::AliTPCParamCR()
45{
46 //
47 //constructor set the default parameters
48 fInnerPRF=0;
f03e3423 49 fOuter1PRF=0;
50 fOuter2PRF=0;
cc80f89e 51 fTimeRF = 0;
52 fFacSigma = Float_t(2.);
53 SetDefault();
54 Update();
55}
56
57AliTPCParamCR::~AliTPCParamCR()
58{
59 //
60 //destructor destroy some dynmicaly alocated variables
61 if (fInnerPRF != 0) delete fInnerPRF;
f03e3423 62 if (fOuter1PRF != 0) delete fOuter1PRF;
63 if (fOuter2PRF != 0) delete fOuter2PRF;
cc80f89e 64 if (fTimeRF != 0) delete fTimeRF;
65}
66
67void AliTPCParamCR::SetDefault()
68{
69 //set default TPC param
70 fbStatus = kFALSE;
71 AliTPCParam::SetDefault();
72}
73
73042f01 74Int_t AliTPCParamCR::CalcResponse(Float_t* xyz, Int_t * index, Int_t dummy)
cc80f89e 75{
76 //
77 //calculate bin response as function of the input position -x
78 //return number of valid response bin
79 //
80 //we suppose that coordinata is expressed in float digits
81 // it's mean coordinate system 8
82 //xyz[0] - float padrow xyz[1] is float pad (center pad is number 0) and xyz[2] is float time bin
f03e3423 83 if ( (fInnerPRF==0)||(fOuter1PRF==0) ||(fOuter2PRF==0)||(fTimeRF==0) ){
cc80f89e 84 Error("AliTPCParamCR", "response function were not adjusted");
85 return -1;
86 }
87
88 Float_t sfpadrow; // sigma of response function
89 Float_t sfpad; // sigma of
90 Float_t sftime= fFacSigma*fTimeRF->GetSigma()/fZWidth; //3 sigma of time response
91 if (index[1]<fNInnerSector){
92 sfpadrow =fFacSigma*fInnerPRF->GetSigmaY()/fInnerPadPitchLength;
93 sfpad =fFacSigma*fInnerPRF->GetSigmaX()/fInnerPadPitchWidth;
94 }else{
f03e3423 95 if(index[2]<fNRowUp1){
96 sfpadrow =fFacSigma*fOuter1PRF->GetSigmaY()/fOuter1PadPitchLength;
97 sfpad =fFacSigma*fOuter1PRF->GetSigmaX()/fOuterPadPitchWidth;}
98 else{ sfpadrow =fFacSigma*fOuter2PRF->GetSigmaY()/fOuter2PadPitchLength;
99 sfpad =fFacSigma*fOuter2PRF->GetSigmaX()/fOuterPadPitchWidth;}
cc80f89e 100 }
101
102 Int_t fpadrow = TMath::Nint(xyz[0]-sfpadrow); //"first" padrow
103 Int_t fpad = TMath::Nint(xyz[1]-sfpad); //first pad
104 Int_t ftime = TMath::Nint(xyz[2]+fTimeRF->GetOffset()-sftime); // first time
105 Int_t lpadrow = TMath::Min(TMath::Nint(xyz[0]+sfpadrow),fpadrow+19); //"last" padrow
106 Int_t lpad = TMath::Min(TMath::Nint(xyz[1]+sfpad),fpad+19); //last pad
107 Int_t ltime = TMath::Min(TMath::Nint(xyz[2]+fTimeRF->GetOffset()+sftime),ftime+19); // last time
108
109 Float_t padres[20][20]; //I don't expect bigger number of bins
110 Float_t timeres[20];
111 //calculate padresponse function
112 Int_t padrow;
113 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
114 for (Int_t pad = fpad;pad<=lpad;pad++){
115 Float_t dy = (xyz[0]-Float_t(padrow));
116 Float_t dx = (xyz[1]-Float_t(pad));
117 if (index[1]<fNInnerSector)
118 padres[padrow-fpadrow][pad-fpad]=fInnerPRF->GetPRF(dx*fInnerPadPitchWidth,dy*fInnerPadPitchLength);
f03e3423 119 else{
120 if(index[2]<fNRowUp1){
121 padres[padrow-fpadrow][pad-fpad]=fOuter1PRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuter1PadPitchLength);}
122 else{ padres[padrow-fpadrow][pad-fpad]=fOuter2PRF->GetPRF(dx*fOuterPadPitchWidth,dy*fOuter2PadPitchLength);}}}
123
cc80f89e 124 //calculate time response function
125
126 Int_t time;
127 for (time = ftime;time<=ltime;time++) timeres[time-ftime]= fTimeRF->GetRF((xyz[2]-Float_t(time))*fZWidth);
128
129 //write over threshold values to stack
130 Int_t cindex3=-1;
131 Int_t cindex=0;
132 Float_t cweight = 0;
133 for (padrow = fpadrow;padrow<=lpadrow;padrow++)
134 for (Int_t pad = fpad;pad<=lpad;pad++)
135 for (time = ftime;time<=ltime;time++){
136 cweight = timeres[time-ftime]*padres[padrow-fpadrow][pad-fpad];
137 if (cweight>fResponseThreshold) {
138 fResponseBin[++cindex3]=padrow;
139 fResponseBin[++cindex3]=pad;
140 fResponseBin[++cindex3]=time;
141 fResponseWeight[++cindex]=cweight;
142 }
143 }
144 fCurrentMax=cindex;
145 return fCurrentMax;
146}
147
148void AliTPCParamCR::CRXYZtoXYZ(Float_t *xyz,
149 const Int_t &sector, const Int_t & padrow, Int_t option) const
150{
151 //transform relative coordinates to absolute
152 Bool_t rel = ( (option&2)!=0);
153 Int_t index[2]={sector,padrow};
154 if (rel==kTRUE) Transform4to3(xyz,index);//if the position is relative to pad row
155 Transform2to1(xyz,index);
156}
157
158void AliTPCParamCR::XYZtoCRXYZ(Float_t *xyz,
159 Int_t &sector, Int_t & padrow, Int_t option) const
160{
161 //transform global position to the position relative to the sector padrow
162 //if option=0 X calculate absolute calculate sector
163 //if option=1 X absolute use input sector
164 //if option=2 X relative to pad row calculate sector
165 //if option=3 X relative use input sector
166 //!!!!!!!!! WE start to calculate rows from row = 0
167 Int_t index[2];
168 Bool_t rel = ( (option&2)!=0);
169
170 //option 0 and 2 means that we don't have information about sector
171 if ((option&1)==0) Transform0to1(xyz,index); //we calculate sector number
172 else
173 index[0]=sector;
174 Transform1to2(xyz,index);
175 Transform2to3(xyz,index);
176 //if we store relative position calculate position relative to pad row
177 if (rel==kTRUE) Transform3to4(xyz,index);
178 sector = index[0];
179 padrow = index[1];
180}
181
182
183
184Bool_t AliTPCParamCR::Update()
185{
cc80f89e 186 Int_t i;
187 if (AliTPCParam::Update()==kFALSE) return kFALSE;
188 fbStatus = kFALSE;
189
f03e3423 190 Float_t firstrow = fInnerRadiusLow + 2.225 ;
191 for( i= 0;i<fNRowLow;i++)
192 {
193 Float_t x = firstrow + fInnerPadPitchLength*(Float_t)i;
194 fPadRowLow[i]=x;
195 // number of pads per row
196/*Float_t y = (x-0.5*fInnerPadPitchLength)*tan(fInnerAngle/2.)-fInnerWireMount-
197 fInnerPadPitchWidth/2.;*/
198 Float_t y = x*tan(fInnerAngle/2.)-fInnerWireMount;
199 fYInner[i]=y;
200 fNPadsLow[i] = 1+2*(Int_t)(y/fInnerPadPitchWidth) ;
cc80f89e 201
f03e3423 202 }
203 firstrow = fOuterRadiusLow + 1.6;
204 for(i=0;i<fNRowUp;i++)
205 {
206 if(i<fNRowUp1){
207 Float_t x = firstrow + fOuter1PadPitchLength*(Float_t)i;
208 fPadRowUp[i]=x;
209/*Float_t y =(x-0.5*fOuter1PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount-
210 fOuterPadPitchWidth/2.;*/
211 Float_t y = x*tan(fInnerAngle/2.)-fInnerWireMount;
cc80f89e 212 fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
f03e3423 213 fYOuter[i] = y;
214 if(i==fNRowUp1-1) {
215 fLastWireUp1=fPadRowUp[i] +0.375;
216 firstrow = fPadRowUp[i] + 0.5*(fOuter1PadPitchLength+fOuter2PadPitchLength);
217 }
218 }
219 else
220 {
221 Float_t x = firstrow + fOuter2PadPitchLength*(Float_t)(i-64);
222/*Float_t y =(x-0.5*fOuter2PadPitchLength)*tan(fOuterAngle/2.)-fOuterWireMount-
223 fOuterPadPitchWidth/2.;*/
224 Float_t y = x*tan(fInnerAngle/2.)-fInnerWireMount;
225 fNPadsUp[i] = 1+2*(Int_t)(y/fOuterPadPitchWidth) ;
226 fYOuter[i] = y;
227 }
228 }
229
cc80f89e 230 fNtRows = fNInnerSector*fNRowLow+fNOuterSector*fNRowUp;
c11cb93f 231 fbStatus = kTRUE;
cc80f89e 232 return kTRUE;
233}
234
235
236
237void AliTPCParamCR::Streamer(TBuffer &R__b)
238{
239 // Stream an object of class AliTPC.
240
241 if (R__b.IsReading()) {
2ab0c725 242 AliTPCParamCR::Class()->ReadBuffer(R__b, this);
243 Update();
cc80f89e 244 } else {
2ab0c725 245 AliTPCParamCR::Class()->WriteBuffer(R__b, this);
cc80f89e 246 }
247}
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