Coding rule violations corrected.
[u/mrichter/AliRoot.git] / ITS / AliITSsimulationSPDdubna.cxx
CommitLineData
f74211b0 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
12e7c97c 16/*
17$Id$
18*/
4ae5bbc4 19#include <Riostream.h>
409f8c84 20#include <TRandom.h>
21#include <TH1.h>
22#include <TMath.h>
23#include <TString.h>
24#include <TParticle.h>
25
409f8c84 26#include "AliRun.h"
27#include "AliITS.h"
28#include "AliITShit.h"
e869281d 29#include "AliITSdigitSPD.h"
409f8c84 30#include "AliITSmodule.h"
31#include "AliITSMapA2.h"
2cc6b29a 32#include "AliITSpList.h"
409f8c84 33#include "AliITSsimulationSPDdubna.h"
f74211b0 34#include "AliITSsegmentationSPD.h"
aacedc3e 35#include "AliITSresponseSPD.h"
409f8c84 36
f74211b0 37//#define DEBUG
409f8c84 38
39ClassImp(AliITSsimulationSPDdubna)
40////////////////////////////////////////////////////////////////////////
12e7c97c 41// Version: 1
42// Modified by Bjorn S. Nilsen
409f8c84 43// Version: 0
44// Written by Boris Batyunya
45// December 20 1999
46//
12e7c97c 47// AliITSsimulationSPDdubna is to do the simulation of SPDs.
2cc6b29a 48//______________________________________________________________________
aacedc3e 49AliITSsimulationSPDdubna::AliITSsimulationSPDdubna():
50AliITSsimulation(),
51fHis(0),
52fSPDname(),
53fCoupling(0){
12e7c97c 54 // Default constructor.
55 // Inputs:
56 // none.
57 // Outputs:
58 // none.
59 // Return:
60 // A default constructed AliITSsimulationSPDdubna class.
2cc6b29a 61
aacedc3e 62 if(GetDebug(1)) Info("AliITSsimulationSPDdubda()",
63 "Calling degault constructor");
409f8c84 64}
2cc6b29a 65//______________________________________________________________________
66AliITSsimulationSPDdubna::AliITSsimulationSPDdubna(AliITSsegmentation *seg,
aacedc3e 67 AliITSresponse *resp,Int_t cup):
68AliITSsimulation(seg,resp),
69fHis(0),
70fSPDname(),
71fCoupling(cup){
2cc6b29a 72 // standard constructor
12e7c97c 73 // Inputs:
74 // AliITSsegmentation *seg A pointer to the segmentation class
75 // to be used for this simulation
76 // AliITSresponse *resp A pointer to the responce class to
77 // be used for this simulation
aacedc3e 78 // Int_t cup The type of coupling to be used
79 // =1 uses SetCoupling, =2 uses SetCouplingOld
80 // With diffusion tured off
81 // =3 uses SetCoupling, =4 uses SetCouplingOld
82 // with diffusion on other, no coupling.
12e7c97c 83 // Outputs:
84 // none.
85 // Return:
86 // A default constructed AliITSsimulationSPDdubna class.
409f8c84 87
aacedc3e 88 if(GetDebug(1)) Info("AliITSsimulationSPDdubda",
89 "Calling degault constructor seg=%p resp=%p cup=%d",
90 seg,resp,cup);
91 if(cup==1||cup==2){ // For the moment, remove defusion if Coupling is
92 // set.
93 resp->SetTemperature(0.0);
94 resp->SetDistanceOverVoltage(0.0);
95 } // end if
96 Init();
12e7c97c 97}
98//______________________________________________________________________
aacedc3e 99void AliITSsimulationSPDdubna::Init(){
12e7c97c 100 // Initilization
101 // Inputs:
aacedc3e 102 // none.
12e7c97c 103 // Outputs:
104 // none.
105 // Return:
106 // none.
107 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
409f8c84 108
12e7c97c 109 SetModuleNumber(0);
110 SetEventNumber(0);
111 SetMap(new AliITSpList(GetNPixelsZ(),GetNPixelsX()));
aacedc3e 112 GetResp(0,0)->SetDistanceOverVoltage(kmictocm*GetSeg()->Dy(),50.0);
2cc6b29a 113}
114//______________________________________________________________________
115AliITSsimulationSPDdubna::~AliITSsimulationSPDdubna(){
116 // destructor
12e7c97c 117 // Inputs:
118 // none.
119 // Outputs:
120 // none.
121 // Return:
122 // none.
409f8c84 123
2cc6b29a 124 if (fHis) {
aacedc3e 125 fHis->Delete();
126 delete fHis;
2cc6b29a 127 } // end if fHis
409f8c84 128}
2cc6b29a 129//______________________________________________________________________
130AliITSsimulationSPDdubna::AliITSsimulationSPDdubna(const
131 AliITSsimulationSPDdubna
12e7c97c 132 &s) : AliITSsimulation(s){
133 // Copy Constructor
134 // Inputs:
135 // AliITSsimulationSPDdubna &s The original class for which
136 // this class is a copy of
137 // Outputs:
138 // none.
139 // Return:
140
141 *this = s;
2cc6b29a 142 return;
143}
144//______________________________________________________________________
145AliITSsimulationSPDdubna& AliITSsimulationSPDdubna::operator=(const
12e7c97c 146 AliITSsimulationSPDdubna &s){
2cc6b29a 147 // Assignment operator
12e7c97c 148 // Inputs:
149 // AliITSsimulationSPDdubna &s The original class for which
150 // this class is a copy of
151 // Outputs:
152 // none.
153 // Return:
154
155 if(&s == this) return *this;
aacedc3e 156 this->fHis = s.fHis;
157 fCoupling = s.fCoupling;
158 fSPDname = s.fSPDname;
2cc6b29a 159 return *this;
160}
161//______________________________________________________________________
162void AliITSsimulationSPDdubna::InitSimulationModule(Int_t module, Int_t event){
163 // This function creates maps to build the list of tracks for each
12e7c97c 164 // summable digit. Inputs defined by base class.
2cc6b29a 165 // Inputs:
166 // Int_t module // Module number to be simulated
167 // Int_t event // Event number to be simulated
2cc6b29a 168 // Outputs:
169 // none
2cc6b29a 170 // Returns:
171 // none
409f8c84 172
aacedc3e 173 if(GetDebug(1)) Info("InitSimulationModule","(module=%d,event=%d)",
174 module,event);
12e7c97c 175 SetModuleNumber(module);
176 SetEventNumber(event);
177 ClearMap();
2cc6b29a 178}
179//_____________________________________________________________________
aacedc3e 180void AliITSsimulationSPDdubna::SDigitiseModule(AliITSmodule *mod,Int_t,
181 Int_t event){
12e7c97c 182 // This function begins the work of creating S-Digits. Inputs defined
183 // by base class.
2cc6b29a 184 // Inputs:
185 // AliITSmodule *mod // module
aacedc3e 186 // Int_t // not used
187 // Int_t event // Event number
2cc6b29a 188 // Outputs:
189 // none
2cc6b29a 190 // Return:
191 // test // test returns kTRUE if the module contained hits
192 // // test returns kFALSE if it did not contain hits
409f8c84 193
aacedc3e 194 if(GetDebug(1)) Info("SDigitiseModule","(mod=%p, ,event=%d)",mod,event);
195 if(!(mod->GetNhits())){
196 if(GetDebug(1)) Info("SDigitiseModule","In event %d module %d there "
197 "are %d hits returning.",event,
198 mod->GetIndex(),mod->GetNhits());
199 return;// if module has no hits don't create Sdigits
200 } // end if
12e7c97c 201 SetModuleNumber(mod->GetIndex());
202 SetEventNumber(event);
203 HitToSDigit(mod);
204 WriteSDigits();
205 ClearMap();
409f8c84 206}
2cc6b29a 207//______________________________________________________________________
12e7c97c 208void AliITSsimulationSPDdubna::WriteSDigits(){
2cc6b29a 209 // This function adds each S-Digit to pList
2cc6b29a 210 // Inputs:
12e7c97c 211 // none.
2cc6b29a 212 // Outputs:
12e7c97c 213 // none.
2cc6b29a 214 // Return:
215 // none
7d50ea21 216 Int_t ix, nix, iz, niz;
2cc6b29a 217 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
218
aacedc3e 219 if(GetDebug(1))Info("WriteSDigits","Writing SDigits for module %d",
220 GetModuleNumber());
12e7c97c 221 GetMap()->GetMaxMapIndex(niz, nix);
222 for(iz=0; iz<niz; iz++)for(ix=0; ix<nix; ix++){
aacedc3e 223 if(GetMap()->GetSignalOnly(iz,ix)>0.0){
224 aliITS->AddSumDigit(*(GetMap()->GetpListItem(iz,ix)));
225 if(GetDebug(1)){
226 cout <<"AliITSsimulationSPDdubna:WriteSDigits " << iz << ","
227 << ix << "," << *(GetMap()->GetpListItem(iz,ix)) << endl;
228 } // end if GetDebug
229 } // end if GetMap()->GetSignalOnly(iz,ix)>0.0
7d50ea21 230 } // end for iz,ix
2cc6b29a 231 return;
232}
233//______________________________________________________________________
234void AliITSsimulationSPDdubna::FinishSDigitiseModule(){
235 // This function calls SDigitsToDigits which creates Digits from SDigits
2cc6b29a 236 // Inputs:
237 // none
2cc6b29a 238 // Outputs:
239 // none
240 // Return
241 // none
409f8c84 242
aacedc3e 243 if(GetDebug(1)) Info("SDigitiseModule","()");
244 pListToDigits(); // Charge To Signal both adds noise and
12e7c97c 245 ClearMap();
aacedc3e 246 return;
409f8c84 247}
2cc6b29a 248//______________________________________________________________________
aacedc3e 249void AliITSsimulationSPDdubna::DigitiseModule(AliITSmodule *mod,Int_t,
250 Int_t){
2cc6b29a 251 // This function creates Digits straight from the hits and then adds
252 // electronic noise to the digits before adding them to pList
12e7c97c 253 // Each of the input variables is passed along to HitToSDigit
2cc6b29a 254 // Inputs:
12e7c97c 255 // AliITSmodule *mod module
aacedc3e 256 // Int_t Dummy.
257 // Int_t Dummy
2cc6b29a 258 // Outputs:
12e7c97c 259 // none.
2cc6b29a 260 // Return:
12e7c97c 261 // none.
409f8c84 262
aacedc3e 263 if(GetDebug(1)) Info("DigitiseModule","(mod=%p,,)",mod);
12e7c97c 264 HitToSDigit(mod);
aacedc3e 265 pListToDigits();
12e7c97c 266 ClearMap();
2cc6b29a 267}
268//______________________________________________________________________
12e7c97c 269void AliITSsimulationSPDdubna::HitToSDigit(AliITSmodule *mod){
f74211b0 270 // Does the charge distributions using Gaussian diffusion charge charing.
12e7c97c 271 // Inputs:
272 // AliITSmodule *mod Pointer to this module
273 // Output:
274 // none.
275 // Return:
276 // none.
f74211b0 277 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
278 TObjArray *hits = mod->GetHits();
279 Int_t nhits = hits->GetEntriesFast();
aacedc3e 280 Int_t h,ix,iz,i;
f74211b0 281 Int_t idtrack;
282 Double_t x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0,de=0.0;
283 Double_t x,y,z,t,tp,st,dt=0.2,el,sig;
284 Double_t thick = kmictocm*GetSeg()->Dy();
285
aacedc3e 286 if(GetDebug(1)) Info("HitsToSDigits","(mod=%p) fCoupling=%d",
287 mod,fCoupling);
f74211b0 288 if(nhits<=0) return;
289 for(h=0;h<nhits;h++){
aacedc3e 290 if(GetDebug(1)){
291 cout << "Hits=" << h << "," << *(mod->GetHit(h)) << endl;
292 } // end if GetDebug
293 if(!mod->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,idtrack)) continue;
294 st = TMath::Sqrt(x1*x1+y1*y1+z1*z1);
295 if(st>0.0){
296 st = (Double_t)((Int_t)(1.0E+04*st)); // number of microns
297 if(st<=0.0) st = 1.0;
298 dt = 1.0/st;
299 for(t=0.0;t<1.0;t+=dt){ // Integrate over t
300 tp = t+0.5*dt;
301 x = x0+x1*tp;
302 y = y0+y1*tp;
303 z = z0+z1*tp;
304 if(!(GetSeg()->LocalToDet(x,z,ix,iz))) continue; // outside
305 el = GetResp(ix,iz)->GeVToCharge((Double_t)(dt*de));
306 if(GetDebug(1)){
307 if(el<=0.0) cout<<"el="<<el<<" dt="<<dt
308 <<" de="<<de<<endl;
309 } // end if GetDebug
310 sig = GetResp(ix,iz)->SigmaDiffusion1D(thick + y);
311 SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
312 } // end for t
313 } else { // st == 0.0 deposit it at this point
314 x = x0;
315 y = y0;
316 z = z0;
317 if(!(GetSeg()->LocalToDet(x,z,ix,iz))) continue; // outside
318 el = GetResp(ix,iz)->GeVToCharge((Double_t)de);
319 sig = GetResp(ix,iz)->SigmaDiffusion1D(thick + y);
320 SpreadCharge(x,z,ix,iz,el,sig,idtrack,h);
321 } // end if st>0.0
322 // Coupling
323 switch (fCoupling) {
324 default:
325 break;
326 case 1: case 3:
327 // x is column and z is row (see AliITSsegmentationSPD::GetPadIxz)
328 for(i=0;i<GetMap()->GetEntries();i++)
329 if(GetMap()->GetpListItem(i)==0) continue;
330 else{
331 GetMap()->GetMapIndex(
332 GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
333 SetCoupling(iz,ix,idtrack,h);
334 } // end for i
335 break;
336 case 2: case 4:
337 // x is column and z is row (see AliITSsegmentationSPD::GetPadIxz)
338 for(i=0;i<GetMap()->GetEntries();i++)
339 if(GetMap()->GetpListItem(i)==0) continue;
340 else{
341 GetMap()->GetMapIndex(
342 GetMap()->GetpListItem(i)->GetIndex(),iz,ix);
343 SetCouplingOld(iz,ix,idtrack,h);
344 } // end for i
345 break;
346 } // end switch
12e7c97c 347 } // Loop over all hits h
aacedc3e 348 if(GetDebug(2))Info("HitToSDigit","Finished fCoupling=%d",fCoupling);
12e7c97c 349}
f74211b0 350//______________________________________________________________________
12e7c97c 351void AliITSsimulationSPDdubna::SpreadCharge(Double_t x0,Double_t z0,
352 Int_t ix0,Int_t iz0,
f74211b0 353 Double_t el,Double_t sig,Int_t t,
12e7c97c 354 Int_t hi){
f74211b0 355 // Spreads the charge over neighboring cells. Assume charge is distributed
356 // as charge(x,z) = (el/2*pi*sig*sig)*exp(-arg)
357 // arg=((x-x0)*(x-x0)/2*sig*sig)+((z-z0*z-z0)/2*sig*sig)
358 // Defined this way, the integral over all x and z is el.
12e7c97c 359 // Inputs:
360 // Double_t x0 x position of point where charge is liberated
361 // Double_t y0 y position of point where charge is liberated
362 // Double_t z0 z position of point where charge is liberated
363 // Int_t ix0 row of cell corresponding to point x0
364 // Int_t iz0 columb of cell corresponding to point z0
365 // Double_t el number of electrons liberated in this step
366 // Double_t sig Sigma difusion for this step (y0 dependent)
367 // Int_t t track number
368 // Int_t ti hit track index number
369 // Int_t hi hit "hit" index number
370 // Outputs:
371 // none.
372 // Return:
373 // none.
f74211b0 374 const Int_t knx = 3,knz = 2;
375 const Double_t kRoot2 = 1.414213562; // Sqrt(2).
376 const Double_t kmictocm = 1.0e-4; // convert microns to cm.
377 Int_t ix,iz,ixs,ixe,izs,ize;
378 Float_t x,z;
379 Double_t x1,x2,z1,z2,s,sp;
380
aacedc3e 381 if(GetDebug(4)) Info("SpreadCharge","(x0=%e,z0=%e,ix0=%d,iz0=%d,el=%e,"
382 "sig=%e,t=%d,i=%d)",x0,z0,ix0,iz0,el,sig,t,hi);
383 if(sig<=0.0) { // if sig<=0 No diffusion to simulate.
384 GetMap()->AddSignal(iz0,ix0,t,hi,GetModuleNumber(),el);
385 if(GetDebug(2)){
386 cout << "sig<=0.0=" << sig << endl;
387 } // end if GetDebug
388 return;
f74211b0 389 } // end if
390 sp = 1.0/(sig*kRoot2);
aacedc3e 391 if(GetDebug(2)){
392 cout << "sig=" << sig << " sp=" << sp << endl;
393 } // end if GetDebug
f74211b0 394 ixs = TMath::Max(-knx+ix0,0);
395 ixe = TMath::Min(knx+ix0,GetSeg()->Npx()-1);
396 izs = TMath::Max(-knz+iz0,0);
397 ize = TMath::Min(knz+iz0,GetSeg()->Npz()-1);
398 for(ix=ixs;ix<=ixe;ix++) for(iz=izs;iz<=ize;iz++){
aacedc3e 399 GetSeg()->DetToLocal(ix,iz,x,z); // pixel center
400 x1 = x;
401 z1 = z;
402 x2 = x1 + 0.5*kmictocm*GetSeg()->Dpx(ix); // Upper
403 x1 -= 0.5*kmictocm*GetSeg()->Dpx(ix); // Lower
404 z2 = z1 + 0.5*kmictocm*GetSeg()->Dpz(iz); // Upper
405 z1 -= 0.5*kmictocm*GetSeg()->Dpz(iz); // Lower
406 x1 -= x0; // Distance from where track traveled
407 x2 -= x0; // Distance from where track traveled
408 z1 -= z0; // Distance from where track traveled
409 z2 -= z0; // Distance from where track traveled
410 s = 0.25; // Correction based on definision of Erfc
411 s *= TMath::Erfc(sp*x1) - TMath::Erfc(sp*x2);
412 if(GetDebug(3)){
413 cout <<"el="<<el<<" ix0="<<ix0<<" ix="<<ix<<" x0="<<x<<
414 " iz0="<<iz0<<" iz="<<iz<<" z0="<<z<<
415 " sp*x1="<<sp*x1<<" sp*x2="<<sp*x2<<" s="<<s;
416 } // end if GetDebug
417 s *= TMath::Erfc(sp*z1) - TMath::Erfc(sp*z2);
418 if(GetDebug(3)){
419 cout<<" sp*z1="<<sp*z1<<" sp*z2="<<sp*z2<<" s="<<s<< endl;
420 } // end if GetDebug
421 GetMap()->AddSignal(iz,ix,t,hi,GetModuleNumber(),s*el);
f74211b0 422 } // end for ix, iz
423}
424//______________________________________________________________________
aacedc3e 425void AliITSsimulationSPDdubna::pListToDigits(){
2cc6b29a 426 // add noise and electronics, perform the zero suppression and add the
427 // digit to the list
12e7c97c 428 // Inputs:
429 // none.
430 // Outputs:
431 // none.
432 // Return:
433 // none.
f74211b0 434 static AliITS *aliITS = (AliITS*)gAlice->GetModule("ITS");
12e7c97c 435 Int_t j,ix,iz;
aacedc3e 436 Double_t electronics;
2cc6b29a 437 Double_t sig;
ee86d557 438 const Int_t nmaxtrk=AliITSdigitSPD::GetNTracks();
f74211b0 439 static AliITSdigitSPD dig;
440
aacedc3e 441 if(GetDebug(1)) Info("pListToDigits","()");
12e7c97c 442 for(iz=0; iz<GetNPixelsZ(); iz++) for(ix=0; ix<GetNPixelsX(); ix++){
aacedc3e 443 // Apply Noise/Dead channals and the like
444 if(GetResp(ix,iz)->IsPixelDead(GetModuleNumber(),ix,iz)) continue;
445 electronics = GetResp(ix,iz)->ApplyBaselineAndNoise();
446 UpdateMapNoise(ix,iz,electronics);
447 //
448 // Apply Threshold and write Digits.
449 sig = GetMap()->GetSignalOnly(iz,ix);
450 FillHistograms(ix,iz,sig+electronics);
451 if(GetDebug(3)){
452 cout<<sig<<"+"<<electronics<<">threshold("<<ix<<","<<iz
453 <<")="<<GetThreshold(ix,iz) <<endl;
454 } // end if GetDebug
455 if (sig+electronics <= GetThreshold(ix,iz)) continue;
456 dig.SetCoord1(iz);
457 dig.SetCoord2(ix);
458 dig.SetSignal(1);
459 dig.SetSignalSPD((Int_t) GetMap()->GetSignal(iz,ix));
460 for(j=0;j<nmaxtrk;j++){
461 if (j<GetMap()->GetNEnteries()) {
462 dig.SetTrack(j,GetMap()->GetTrack(iz,ix,j));
463 dig.SetHit(j,GetMap()->GetHit(iz,ix,j));
464 }else { // Default values
465 dig.SetTrack(j,-3);
466 dig.SetHit(j,-1);
467 } // end if GetMap()
468 } // end for j
469 if(GetDebug(3)){
470 cout<<iz<<","<<ix<<","<<*(GetMap()->GetpListItem(iz,ix))<<endl;
471 } // end if GetDebug
472 aliITS->AddSimDigit(0,&dig);
12e7c97c 473 } // for ix/iz
409f8c84 474}
2cc6b29a 475//______________________________________________________________________
476void AliITSsimulationSPDdubna::CreateHistograms(){
477 // create 1D histograms for tests
12e7c97c 478 // Inputs:
479 // none.
480 // Outputs:
481 // none.
482 // Return:
483 // none.
2cc6b29a 484
aacedc3e 485 if(GetDebug(1)) Info("CreateHistograms","create histograms");
2cc6b29a 486
aacedc3e 487 fHis = new TObjArray(GetNPixelsZ());
488 TString fSPDname("spd_");
489 for(Int_t i=0;i<GetNPixelsZ();i++) {
490 Char_t pixelz[4];
491 sprintf(pixelz,"%d",i);
492 fSPDname.Append(pixelz);
493 fHis->AddAt(new TH1F(fSPDname.Data(),"SPD maps",
494 GetNPixelsX(),0.,(Double_t)GetNPixelsX()),i);
2cc6b29a 495 } // end for i
409f8c84 496}
2cc6b29a 497//______________________________________________________________________
aacedc3e 498void AliITSsimulationSPDdubna::FillHistograms(Int_t ix,Int_t iz,Double_t v){
499 // Fill the histogram
500 // Inputs:
501 // none.
502 // Outputs:
503 // none.
504 // Return:
505 // none.
506
507 if(!GetHistArray()) return; // Only fill if setup.
508 if(GetDebug(2)) Info("FillHistograms","fill histograms");
509 GetHistogram(iz)->Fill(ix,v);
510}
511//______________________________________________________________________
2cc6b29a 512void AliITSsimulationSPDdubna::ResetHistograms(){
409f8c84 513 // Reset histograms for this detector
12e7c97c 514 // Inputs:
515 // none.
516 // Outputs:
517 // none.
518 // Return:
519 // none.
409f8c84 520
aacedc3e 521 if(!GetHistArray()) return; // Only fill if setup.
522 if(GetDebug(2)) Info("FillHistograms","fill histograms");
12e7c97c 523 for ( int i=0;i<GetNPixelsZ();i++ ) {
aacedc3e 524 if (fHis->At(i)) ((TH1F*)fHis->At(i))->Reset();
2cc6b29a 525 } // end for i
409f8c84 526}
12e7c97c 527
528//______________________________________________________________________
529void AliITSsimulationSPDdubna::SetCoupling(Int_t row, Int_t col, Int_t ntrack,
530 Int_t idhit) {
531 // Take into account the coupling between adiacent pixels.
532 // The parameters probcol and probrow are the probability of the
533 // signal in one pixel shared in the two adjacent pixels along
534 // the column and row direction, respectively.
aacedc3e 535 // Note pList is goten via GetMap() and module is not need any more.
536 // Otherwise it is identical to that coded by Tiziano Virgili (BSN).
12e7c97c 537 //Begin_Html
538 /*
539 <img src="picts/ITS/barimodel_3.gif">
540 </pre>
541 <br clear=left>
542 <font size=+2 color=red>
543 <a href="mailto:tiziano.virgili@cern.ch"></a>.
544 </font>
545 <pre>
546 */
547 //End_Html
548 // Inputs:
549 // Int_t row z cell index
550 // Int_t col x cell index
551 // Int_t ntrack track incex number
552 // Int_t idhit hit index number
12e7c97c 553 // Outputs:
554 // none.
555 // Return:
556 // none.
557 Int_t j1,j2,flag=0;
558 Double_t pulse1,pulse2;
aacedc3e 559 Double_t couplR=0.0,couplC=0.0;
12e7c97c 560 Double_t xr=0.;
12e7c97c 561
562 GetCouplings(couplR,couplC);
aacedc3e 563 if(GetDebug(3)) Info("SetCoupling","(row=%d,col=%d,ntrack=%d,idhit=%d) "
564 "Calling SetCoupling couplR=%e couplC=%e",
565 row,col,ntrack,idhit,couplR,couplC);
12e7c97c 566 j1 = row;
567 j2 = col;
aacedc3e 568 pulse1 = GetMap()->GetSignalOnly(row,col);
12e7c97c 569 pulse2 = pulse1;
570 for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction
aacedc3e 571 do{
572 j1 += isign;
573 // pulse1 *= couplR;
574 xr = gRandom->Rndm();
575 //if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold(j1,col))){
576 if ((j1<0) || (j1>GetNPixelsZ()-1) || (xr>couplR)){
577 j1 = row;
578 flag = 1;
579 }else{
580 UpdateMapSignal(col,j1,ntrack,idhit,pulse1);
581 // flag = 0;
582 flag = 1; // only first next!!
583 } // end if
584 } while(flag == 0);
585 // loop in column direction
586 do{
587 j2 += isign;
588 // pulse2 *= couplC;
589 xr = gRandom->Rndm();
590 //if((j2<0)||j2>(GetNPixelsX()-1)||pulse2<GetThreshold(row,j2)){
591 if ((j2<0) || (j2>GetNPixelsX()-1) || (xr>couplC)){
592 j2 = col;
593 flag = 1;
594 }else{
595 UpdateMapSignal(j2,row,ntrack,idhit,pulse2);
596 // flag = 0;
597 flag = 1; // only first next!!
598 } // end if
599 } while(flag == 0);
12e7c97c 600 } // for isign
601}
602//______________________________________________________________________
603void AliITSsimulationSPDdubna::SetCouplingOld(Int_t row, Int_t col,
604 Int_t ntrack,Int_t idhit) {
605 // Take into account the coupling between adiacent pixels.
606 // The parameters probcol and probrow are the fractions of the
607 // signal in one pixel shared in the two adjacent pixels along
608 // the column and row direction, respectively.
609 //Begin_Html
610 /*
611 <img src="picts/ITS/barimodel_3.gif">
612 </pre>
613 <br clear=left>
614 <font size=+2 color=red>
615 <a href="mailto:Rocco.Caliandro@ba.infn.it"></a>.
616 </font>
617 <pre>
618 */
619 //End_Html
620 // Inputs:
621 // Int_t row z cell index
622 // Int_t col x cell index
623 // Int_t ntrack track incex number
624 // Int_t idhit hit index number
625 // Int_t module module number
626 // Outputs:
627 // none.
628 // Return:
629 // none.
630 Int_t j1,j2,flag=0;
631 Double_t pulse1,pulse2;
aacedc3e 632 Double_t couplR=0.0,couplC=0.0;
12e7c97c 633
634 GetCouplings(couplR,couplC);
aacedc3e 635 if(GetDebug(3)) Info("SetCouplingOld","(row=%d,col=%d,ntrack=%d,idhit=%d) "
636 "Calling SetCoupling couplR=%e couplC=%e",
637 row,col,ntrack,idhit,couplR,couplC);
12e7c97c 638 j1 = row;
639 j2 = col;
aacedc3e 640 pulse1 = GetMap()->GetSignalOnly(row,col);
12e7c97c 641 pulse2 = pulse1;
642 for (Int_t isign=-1;isign<=1;isign+=2){// loop in row direction
aacedc3e 643 do{
644 j1 += isign;
645 pulse1 *= couplR;
646 if ((j1<0)||(j1>GetNPixelsZ()-1)||(pulse1<GetThreshold(j1,col))){
647 pulse1 = GetMap()->GetSignalOnly(row,col);
648 j1 = row;
649 flag = 1;
650 }else{
651 UpdateMapSignal(col,j1,ntrack,idhit,pulse1);
652 flag = 0;
653 } // end if
654 } while(flag == 0);
655 // loop in column direction
656 do{
657 j2 += isign;
658 pulse2 *= couplC;
659 if((j2<0)||(j2>(GetNPixelsX()-1))||(pulse2<GetThreshold(row,j2))){
660 pulse2 = GetMap()->GetSignalOnly(row,col);
661 j2 = col;
662 flag = 1;
663 }else{
664 UpdateMapSignal(j2,row,ntrack,idhit,pulse2);
665 flag = 0;
666 } // end if
667 } while(flag == 0);
12e7c97c 668 } // for isign
669}