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451f5018 | 1 | |
2 | /************************************************************************** | |
f6b66dab | 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 | **************************************************************************/ | |
451f5018 | 16 | |
451f5018 | 17 | #include <TGeoGlobalMagField.h> |
18 | #include <TH1.h> | |
29ad4146 | 19 | #include <TH2.h> |
451f5018 | 20 | #include <TString.h> |
21 | #include "AliITSU.h" | |
22 | #include "AliITSUDigitPix.h" | |
23 | #include "AliITSUHit.h" | |
852af72e | 24 | #include "AliITSUChip.h" |
451f5018 | 25 | #include "AliITSUSensMap.h" |
26 | #include "AliITSUCalibrationPix.h" | |
27 | #include "AliITSUSegmentationPix.h" | |
28 | #include "AliITSUSimulationPix.h" | |
29 | #include "AliLog.h" | |
30 | #include "AliRun.h" | |
31 | #include "AliMagF.h" | |
32 | #include "AliMathBase.h" | |
33 | #include "AliITSUSimuParam.h" | |
34 | #include "AliITSUSDigit.h" | |
29ad4146 | 35 | #include "AliITSUParamList.h" |
451f5018 | 36 | |
e61afb80 | 37 | using std::cout; |
38 | using std::endl; | |
a11ef2e4 | 39 | using namespace TMath; |
e61afb80 | 40 | |
451f5018 | 41 | ClassImp(AliITSUSimulationPix) |
42 | //////////////////////////////////////////////////////////////////////// | |
43 | // Version: 1 | |
f6b66dab | 44 | // Modified by D. Elia, G.E. Bruno, H. Tydesjo |
451f5018 | 45 | // Fast diffusion code by Bjorn S. Nilsen |
46 | // March-April 2006 | |
47 | // October 2007: GetCalibrationObjects() removed | |
48 | // | |
49 | // Version: 0 | |
50 | // Written by Boris Batyunya | |
51 | // December 20 1999 | |
52 | // | |
53 | // Adapted for pixels of ITS upgrade July 2012, ruben.shahoyan@cern.ch | |
54 | // | |
55 | // AliITSUSimulationPix is to do the simulation of pixels | |
56 | // | |
29ad4146 | 57 | // 2013 Feb: Added MonoPix response and nois calculation al la MIMOSA32 (levente.molnar@cern.ch) |
58 | // | |
451f5018 | 59 | //////////////////////////////////////////////////////////////////////// |
60 | ||
61 | //______________________________________________________________________ | |
62 | AliITSUSimulationPix::AliITSUSimulationPix() | |
63 | : fTanLorAng(0) | |
f6b66dab | 64 | ,fGlobalChargeScale(1.0) |
65 | ,fSpread2DHisto(0) | |
66 | ,fSpreadFun(0) | |
67 | ,fROTimeFun(0) | |
451f5018 | 68 | { |
f6b66dab | 69 | // Default constructor. |
70 | SetUniqueID(AliITSUGeomTGeo::kChipTypePix); | |
451f5018 | 71 | } |
72 | ||
73 | //______________________________________________________________________ | |
74 | AliITSUSimulationPix::AliITSUSimulationPix(AliITSUSimuParam* sim,AliITSUSensMap* map) | |
f6b66dab | 75 | :AliITSUSimulation(sim,map) |
76 | ,fTanLorAng(0) | |
77 | ,fGlobalChargeScale(1.0) | |
78 | ,fSpread2DHisto(0) | |
79 | ,fSpreadFun(0) | |
80 | ,fROTimeFun(0) | |
451f5018 | 81 | { |
f6b66dab | 82 | // standard constructor |
83 | SetUniqueID(AliITSUGeomTGeo::kChipTypePix); | |
84 | Init(); | |
451f5018 | 85 | } |
86 | ||
87 | //______________________________________________________________________ | |
f6b66dab | 88 | AliITSUSimulationPix::AliITSUSimulationPix(const AliITSUSimulationPix &s) |
89 | :AliITSUSimulation(s) | |
90 | ,fTanLorAng(s.fTanLorAng) | |
91 | ,fGlobalChargeScale(s.fGlobalChargeScale) | |
92 | ,fSpread2DHisto(s.fSpread2DHisto) | |
93 | ,fSpreadFun(s.fSpreadFun) | |
94 | ,fROTimeFun(s.fROTimeFun) | |
451f5018 | 95 | { |
f6b66dab | 96 | // Copy Constructor |
451f5018 | 97 | } |
98 | ||
99 | ||
100 | //______________________________________________________________________ | |
101 | AliITSUSimulationPix::~AliITSUSimulationPix() | |
102 | { | |
f6b66dab | 103 | // destructor |
104 | // only the sens map is owned and it is deleted by ~AliITSUSimulation | |
451f5018 | 105 | } |
106 | ||
107 | //______________________________________________________________________ | |
108 | AliITSUSimulationPix& AliITSUSimulationPix::operator=(const AliITSUSimulationPix &s) | |
109 | { | |
f6b66dab | 110 | // Assignment operator |
111 | if (&s == this) return *this; | |
112 | AliITSUSimulation::operator=(s); | |
113 | fSpread2DHisto = s.fSpread2DHisto; | |
114 | // | |
115 | fGlobalChargeScale = s.fGlobalChargeScale; | |
116 | fSpreadFun = s.fSpreadFun; | |
117 | fROTimeFun = s.fROTimeFun; | |
118 | // | |
119 | return *this; | |
451f5018 | 120 | } |
121 | ||
122 | //______________________________________________________________________ | |
123 | void AliITSUSimulationPix::Init() | |
124 | { | |
f6b66dab | 125 | // Initilization |
126 | if (fSimuParam->GetPixLorentzDrift()) SetTanLorAngle(fSimuParam->GetPixLorentzHoleWeight()); | |
451f5018 | 127 | } |
128 | ||
129 | //______________________________________________________________________ | |
f6b66dab | 130 | Bool_t AliITSUSimulationPix::SetTanLorAngle(Double_t weightHole) |
451f5018 | 131 | { |
f6b66dab | 132 | // This function set the Tangent of the Lorentz angle. |
133 | // A weighted average is used for electrons and holes | |
134 | // Input: Double_t weightHole: wheight for hole: it should be in the range [0,1] | |
135 | // output: Bool_t : kTRUE in case of success | |
136 | // | |
137 | if (weightHole<0) { | |
138 | weightHole=0.; | |
139 | AliWarning("You have asked for negative Hole weight"); | |
140 | AliWarning("I'm going to use only electrons"); | |
141 | } | |
142 | if (weightHole>1) { | |
143 | weightHole=1.; | |
144 | AliWarning("You have asked for weight > 1"); | |
145 | AliWarning("I'm going to use only holes"); | |
146 | } | |
147 | Double_t weightEle=1.-weightHole; | |
148 | AliMagF* fld = (AliMagF*)TGeoGlobalMagField::Instance()->GetField(); | |
149 | if (!fld) AliFatal("The field is not initialized"); | |
150 | Double_t bz = fld->SolenoidField(); | |
151 | fTanLorAng = Tan(weightHole*fSimuParam->LorentzAngleHole(bz) + | |
152 | weightEle*fSimuParam->LorentzAngleElectron(bz)); | |
153 | return kTRUE; | |
451f5018 | 154 | } |
155 | ||
156 | //_____________________________________________________________________ | |
852af72e | 157 | void AliITSUSimulationPix::SDigitiseChip() |
451f5018 | 158 | { |
f6b66dab | 159 | // This function begins the work of creating S-Digits. |
29ad4146 | 160 | |
f6b66dab | 161 | AliDebug(10,Form("In event %d chip %d there are %d hits", fEvent, fChip->GetIndex(),fChip->GetNHits())); |
162 | if (fChip->GetNHits()) { | |
163 | if(fResponseParam->GetParameter(kDigitalSim) == 0 ) Hits2SDigitsFast(); // analogue chip response simulation | |
164 | else Hits2SDigitsFastDigital(); // digital chip response | |
165 | } | |
166 | if (!fSensMap->GetEntries()) return; | |
167 | WriteSDigits(); | |
168 | ClearMap(); | |
169 | // | |
451f5018 | 170 | } |
171 | ||
172 | //______________________________________________________________________ | |
173 | void AliITSUSimulationPix::WriteSDigits() | |
174 | { | |
f6b66dab | 175 | // This function adds each S-Digit to pList |
176 | static AliITSU *aliITS = (AliITSU*)gAlice->GetModule("ITS"); | |
177 | int nsd = fSensMap->GetEntries(); | |
178 | ||
179 | ||
180 | for (int i=0;i<nsd;i++) { | |
181 | AliITSUSDigit* sd = (AliITSUSDigit*)fSensMap->At(i); // ordered in index | |
182 | if (!sd->GetSumSignal()>0 || fSensMap->IsDisabled(sd)) continue; | |
183 | aliITS->AddSumDigit(*sd); | |
184 | } | |
185 | return; | |
451f5018 | 186 | } |
187 | ||
188 | //______________________________________________________________________ | |
852af72e | 189 | void AliITSUSimulationPix::FinishSDigitiseChip() |
451f5018 | 190 | { |
f6b66dab | 191 | // This function calls SDigitsToDigits which creates Digits from SDigits |
192 | FrompListToDigits(); | |
193 | ClearMap(); | |
194 | return; | |
451f5018 | 195 | } |
196 | ||
197 | //______________________________________________________________________ | |
852af72e | 198 | void AliITSUSimulationPix::DigitiseChip() |
451f5018 | 199 | { |
f6b66dab | 200 | // This function creates Digits straight from the hits and then adds |
201 | // electronic noise to the digits before adding them to pList | |
202 | // Each of the input variables is passed along to Hits2SDigits | |
203 | // | |
204 | if(fResponseParam->GetParameter(kDigitalSim) == 0 ) Hits2SDigitsFast(); // analogue chip response simulation | |
205 | else Hits2SDigitsFastDigital(); // digital chip response | |
206 | FinishSDigitiseChip(); | |
451f5018 | 207 | } |
208 | ||
209 | //______________________________________________________________________ | |
c92b1537 | 210 | void AliITSUSimulationPix::Hits2SDigits() |
451f5018 | 211 | { |
f6b66dab | 212 | // Does the charge distributions using Gaussian diffusion charge charing. |
213 | Int_t nhits = fChip->GetNHits(); | |
214 | if (!nhits) return; | |
215 | // | |
216 | Int_t h,ix,iz,i; | |
217 | Int_t idtrack; | |
218 | Float_t x,y,z; // keep coordinates float (required by AliSegmentation) | |
219 | Double_t tof,x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0,de=0.0; | |
220 | Double_t t,tp,st,dt=0.2,el; | |
221 | Double_t thick = 0.5*fSeg->Dy(); // Half Thickness | |
451f5018 | 222 | |
f6b66dab | 223 | // |
224 | for (h=0;h<nhits;h++) { | |
225 | // | |
226 | if (!fChip->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,tof,idtrack)) continue; | |
227 | st = Sqrt(x1*x1+y1*y1+z1*z1); | |
228 | if (st>0.0) { | |
229 | st = (Double_t)((Int_t)(st*1e4)); // number of microns | |
230 | if (st<=1.0) st = 1.0; | |
231 | dt = 1.0/st; // RS TODO: do we need 1 micron steps? | |
232 | double dy = dt*thick; | |
233 | y = -0.5*dy; | |
234 | for (t=0.0;t<1.0;t+=dt) { // Integrate over t | |
235 | tp = t+0.5*dt; | |
236 | x = x0+x1*tp; | |
237 | y += dy; | |
238 | z = z0+z1*tp; | |
239 | if (!(fSeg->LocalToDet(x,z,ix,iz))) continue; // outside | |
240 | el = fGlobalChargeScale * dt * de / fSimuParam->GetGeVToCharge(); | |
241 | // | |
242 | if (fSimuParam->GetPixLorentzDrift()) x += y*fTanLorAng; | |
243 | SpreadCharge2D(x,z,y,ix,iz,el,tof,idtrack,h); | |
244 | } // end for t | |
245 | } else { // st == 0.0 deposit it at this point | |
246 | x = x0; | |
247 | y = y0 + 0.5*thick; | |
248 | z = z0; | |
249 | if (!(fSeg->LocalToDet(x,z,ix,iz))) continue; // outside | |
250 | el = fGlobalChargeScale * de / fSimuParam->GetGeVToCharge(); | |
251 | if (fSimuParam->GetPixLorentzDrift()) x += y*fTanLorAng; | |
252 | SpreadCharge2D(x,z,y,ix,iz,el,tof,idtrack,h); | |
253 | } // end if st>0.0 | |
254 | } // Loop over all hits h | |
255 | // | |
256 | // Coupling | |
257 | int nd = fSensMap->GetEntriesUnsorted(); // use unsorted access when possible, since it is faster | |
258 | AliITSUSDigit* dg = 0; | |
259 | switch (fSimuParam->GetPixCouplingOption()) { | |
260 | case AliITSUSimuParam::kNoCouplingPix : | |
261 | break; | |
262 | case AliITSUSimuParam::kNewCouplingPix : | |
263 | for (i=nd;i--;) { | |
264 | dg = (AliITSUSDigit*)fSensMap->AtUnsorted(i); | |
265 | if (fSensMap->IsDisabled(dg)) continue; | |
266 | SetCoupling(dg); | |
267 | } | |
268 | break; | |
269 | case AliITSUSimuParam::kOldCouplingPix: | |
270 | for (i=nd;i--;) { | |
271 | dg = (AliITSUSDigit*)fSensMap->AtUnsorted(i); | |
272 | if (fSensMap->IsDisabled(dg)) continue; | |
273 | SetCouplingOld(dg); | |
274 | } | |
275 | break; | |
276 | default: | |
277 | break; | |
278 | ||
279 | } // end switch | |
280 | if (GetDebug(2)) AliInfo(Form("Finished fCoupling=%d",fSimuParam->GetPixCouplingOption())); | |
451f5018 | 281 | } |
282 | ||
283 | //______________________________________________________________________ | |
c92b1537 | 284 | void AliITSUSimulationPix::Hits2SDigitsFast() |
451f5018 | 285 | { |
f6b66dab | 286 | // Does the charge distributions using Gaussian diffusion charge charing. // Inputs: |
287 | // AliITSUChip *mod Pointer to this chip | |
288 | // | |
289 | TObjArray *hits = fChip->GetHits(); | |
290 | Int_t nhits = hits->GetEntriesFast(); | |
291 | if (nhits<=0) return; | |
292 | // | |
293 | Int_t h,ix,iz,i; | |
294 | Int_t idtrack; | |
295 | Float_t x,y,z; // keep coordinates float (required by AliSegmentation) | |
296 | Double_t tof,x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0; | |
297 | Double_t step,st,el,de=0.0; | |
298 | Double_t minDim = Min(fSeg->Dpx(1),fSeg->Dpz(1)); // RStmp: smallest pitch | |
299 | Double_t thick = fSeg->Dy(); | |
300 | // | |
301 | for (h=0;h<nhits;h++) { | |
302 | // | |
303 | if (!fChip->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,tof,idtrack)) continue; | |
304 | // | |
305 | st = Sqrt(x1*x1+y1*y1+z1*z1); | |
306 | if (st>0.0) { | |
307 | int np = int(1.5*st/minDim); //RStmp: inject the points in such a way that there is ~1.5 point per cell | |
308 | np = TMath::Max(1.0*np,fResponseParam->GetParameter(kSpreadFunMinSteps)); | |
309 | AliDebug(10,Form(" Number of charge injection steps is set to %d ",np)); | |
310 | double dstep = 1./np; | |
311 | double dy = dstep*thick; | |
312 | y = -0.5*dy; | |
313 | step = -0.5*dstep; | |
314 | for (i=0;i<np;i++) { //RStmp Integrate over t | |
315 | // for (i=0;i<kn10;i++) { // Integrate over t | |
316 | step += dstep; // RStmp kti[i]; | |
317 | x = x0+x1*step; | |
318 | y += dy; | |
319 | z = z0+z1*step; | |
320 | if (!(fSeg->LocalToDet(x,z,ix,iz))) continue; // outside | |
321 | el = fGlobalChargeScale * dstep * de/fSimuParam->GetGeVToCharge(); | |
322 | if (fSimuParam->GetPixLorentzDrift()) x += y*fTanLorAng; | |
323 | SpreadCharge2D(x,z,y,ix,iz,el,tof,idtrack,h); | |
324 | } // end for i // End Integrate over t | |
325 | } | |
326 | else { // st == 0.0 deposit it at this point | |
327 | x = x0; | |
328 | y = y0+0.5*thick; | |
329 | z = z0; | |
330 | if (!(fSeg->LocalToDet(x,z,ix,iz))) continue; // outside | |
331 | el = fGlobalChargeScale * de / fSimuParam->GetGeVToCharge(); | |
332 | if (fSimuParam->GetPixLorentzDrift()) x += y*fTanLorAng; | |
333 | SpreadCharge2D(x,z,y,ix,iz,el,tof,idtrack,h); | |
334 | } // end if st>0.0 | |
335 | ||
336 | } // Loop over all hits h | |
451f5018 | 337 | |
f6b66dab | 338 | // Coupling |
339 | int nd = fSensMap->GetEntriesUnsorted(); // use unsorted access when possible, since it is faster | |
340 | AliITSUSDigit* dg = 0; | |
341 | switch (fSimuParam->GetPixCouplingOption()) { | |
342 | case AliITSUSimuParam::kNoCouplingPix : | |
343 | break; | |
344 | case AliITSUSimuParam::kNewCouplingPix : | |
345 | for (i=nd;i--;) { | |
346 | dg = (AliITSUSDigit*)fSensMap->AtUnsorted(i); | |
347 | if (fSensMap->IsDisabled(dg)) continue; | |
348 | SetCoupling(dg); | |
349 | } | |
350 | case AliITSUSimuParam::kOldCouplingPix: | |
351 | for (i=nd;i--;) { | |
352 | dg = (AliITSUSDigit*)fSensMap->AtUnsorted(i); | |
353 | if (fSensMap->IsDisabled(dg)) continue; | |
354 | SetCouplingOld(dg); | |
355 | } | |
356 | break; | |
357 | default: | |
358 | break; | |
359 | } // end switch | |
360 | if (GetDebug(2)) AliInfo(Form("Finished fCoupling=%d",fSimuParam->GetPixCouplingOption())); | |
451f5018 | 361 | } |
362 | ||
363 | //______________________________________________________________________ | |
c92b1537 | 364 | void AliITSUSimulationPix::SpreadCharge2D(Double_t x0,Double_t z0, Double_t dy, Int_t ix0,Int_t iz0, |
f6b66dab | 365 | Double_t el, Double_t tof, Int_t tID, Int_t hID) |
451f5018 | 366 | { |
f6b66dab | 367 | // Spreads the charge over neighboring cells. Assume charge is distributed |
368 | // as charge(x,z) = (el/2*pi*sigx*sigz)*exp(-arg) | |
369 | // arg=((x-x0)*(x-x0)/2*sigx*sigx)+((z-z0*z-z0)/2*sigz*sigz) | |
370 | // Defined this way, the integral over all x and z is el. | |
371 | // Inputs: | |
372 | // Double_t x0 x position of point where charge is liberated (local) | |
373 | // Double_t z0 z position of point where charge is liberated (local) | |
374 | // Double_t dy distance from the entrance surface (diffusion sigma may depend on it) | |
375 | // Int_t ix0 row of cell corresponding to point x0 | |
376 | // Int_t iz0 columb of cell corresponding to point z0 | |
377 | // Double_t el number of electrons liberated in this step | |
378 | // Double_t sigx Sigma difusion along x for this step (y0 dependent) | |
379 | // Double_t sigz Sigma difusion along z for this step (z0 dependent) | |
380 | // Int_t tID track number | |
381 | // Int_t hID hit "hit" index number | |
382 | // | |
383 | Int_t ix,iz,ixs,ixe,izs,ize; | |
384 | Float_t x,z; // keep coordinates float (required by AliSegmentation) | |
385 | Float_t xdioshift = 0 , zdioshift = 0 ; | |
386 | Double_t s,dtIn[kNDtSpread]; // data transfered to spread function for integral calculation | |
387 | // | |
388 | if (GetDebug(2)) AliInfo(Form("(x0=%e,z0=%e,dy=%e, ix0=%d,iz0=%d,el=%e,tID=%d,hID=%d)",x0,z0,dy,ix0,iz0,el,tID,hID)); | |
389 | // | |
390 | Double_t &x1 = dtIn[kCellX1]; | |
391 | Double_t &x2 = dtIn[kCellX2]; | |
392 | Double_t &z1 = dtIn[kCellZ1]; | |
393 | Double_t &z2 = dtIn[kCellZ2]; | |
394 | // | |
395 | int nx = GetResponseParam()->GetParameter(kSpreadFunParamNXoffs); | |
396 | int nz = GetResponseParam()->GetParameter(kSpreadFunParamNZoffs); | |
397 | // | |
398 | dtIn[kCellYDepth] = dy; | |
399 | ixs = Max(-nx+ix0,0); | |
400 | ixe = Min( nx+ix0,fSeg->Npx()-1); | |
401 | izs = Max(-nz+iz0,0); | |
402 | ize = Min( nz+iz0,fSeg->Npz()-1); | |
403 | for (ix=ixs;ix<=ixe;ix++) | |
404 | for (iz=izs;iz<=ize;iz++) { | |
405 | // | |
406 | // Check if the hit is inside readout window | |
407 | int cycleRO = (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fROTimeFun)(ix,iz,tof); | |
408 | if (Abs(cycleRO)>kMaxROCycleAccept) continue; | |
409 | // | |
410 | fSeg->DetToLocal(ix,iz,x,z); // pixel center | |
411 | xdioshift = zdioshift = 0; | |
412 | double dxi = fSeg->Dpx(ix); | |
413 | double dzi = fSeg->Dpz(iz); | |
414 | CalcDiodeShiftInPixel(ix,iz,xdioshift,zdioshift); // Check and apply diode shift if needed | |
415 | xdioshift *= dxi; | |
416 | zdioshift *= dzi; | |
417 | dxi *= 0.5; | |
418 | dzi *= 0.5; | |
419 | // printf("DShift: %d %d -> %.4f %.4f\n",ix,iz,xdioshift,zdioshift); | |
420 | x1 = (x + xdioshift) - x0; // calculate distance of cell boundaries from injection center | |
421 | z1 = (z + zdioshift) - z0; | |
422 | x2 = x1 + dxi; // Upper | |
423 | x1 -= dxi; // Lower | |
424 | z2 = z1 + dzi; // Upper | |
425 | z1 -= dzi; // Lower | |
426 | s = el* (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fSpreadFun)(dtIn); | |
427 | if (s>fSimuParam->GetPixMinElToAdd()) UpdateMapSignal(iz,ix,tID,hID,s,cycleRO); | |
428 | } // end for ix, iz | |
429 | // | |
451f5018 | 430 | } |
431 | ||
c92b1537 | 432 | //______________________________________________________________________ |
433 | Double_t AliITSUSimulationPix::SpreadFunDoubleGauss2D(const Double_t *dtIn) | |
434 | { | |
f6b66dab | 435 | // calculate integral of charge in the cell with boundaries at X=dtIn[kCellX1]:dtIn[kCellX2] |
436 | // and Z=dtIn[kCellZ1]:dtIn[kCellZ2] | |
437 | // The spread function is assumed to be double gaussian in 2D | |
438 | // Parameters should be: mean0,sigma0, mean1,sigma1, relative strenght of 2nd gaussian wrt 1st one | |
439 | // | |
440 | // 1st gaussian | |
441 | double intg1 = GausInt2D(fResponseParam->GetParameter(kG2SigX0), // sigX | |
442 | dtIn[kCellX1]-fResponseParam->GetParameter(kG2MeanX0), // x1-xmean | |
443 | dtIn[kCellX2]-fResponseParam->GetParameter(kG2MeanX0), // x2-xmean | |
444 | fResponseParam->GetParameter(kG2SigZ0), // sigZ | |
445 | dtIn[kCellZ1]-fResponseParam->GetParameter(kG2MeanZ0), // z1-zmean | |
446 | dtIn[kCellZ2]-fResponseParam->GetParameter(kG2MeanZ0)); // z2-zmean | |
447 | // 2nd gaussian | |
448 | double intg2 = GausInt2D(fResponseParam->GetParameter(kG2SigX1), // sigX | |
449 | dtIn[kCellX1]-fResponseParam->GetParameter(kG2MeanX1), // x1-xmean | |
450 | dtIn[kCellX2]-fResponseParam->GetParameter(kG2MeanX1), // x2-xmean | |
451 | fResponseParam->GetParameter(kG2SigZ1), // sigZ | |
452 | dtIn[kCellZ1]-fResponseParam->GetParameter(kG2MeanZ1), // z1-zmean | |
453 | dtIn[kCellZ2]-fResponseParam->GetParameter(kG2MeanZ1)); // z2-zmean | |
454 | double scl = fResponseParam->GetParameter(kG2ScaleG2); | |
455 | return (intg1+intg2*scl)/(1+scl); | |
456 | // | |
457 | } | |
c92b1537 | 458 | |
29ad4146 | 459 | |
460 | //______________________________________________________________________ | |
461 | Double_t AliITSUSimulationPix::SpreadFrom2DHisto(const Double_t *dtIn) | |
462 | { | |
f6b66dab | 463 | // calculate integral of charge in the cell with boundaries at X=dtIn[kCellX1]:dtIn[kCellX2] |
464 | // and Z=dtIn[kCellZ1]:dtIn[kCellZ2] | |
465 | // The spread function integral is taken from fSpread2DHisto extracted from the sensor response parameters | |
466 | // list in the method SetResponseParam. The histo must return the fraction of charge integrates in the | |
467 | // cell whose center is on the distance X=(dtIn[kCellX1]+dtIn[kCellX2])/2 and Z=(dtIn[kCellZ1]+dtIn[kCellZ2])/2 | |
468 | // from the injection point. | |
469 | // | |
470 | Double_t qpixfrac = 0; | |
471 | Double_t xintp = 1e4*(dtIn[kCellX1]+dtIn[kCellX2])/2.0; | |
472 | Double_t zintp = 1e4*(dtIn[kCellZ1]+dtIn[kCellZ2])/2.0; | |
473 | // | |
474 | qpixfrac = fSpread2DHisto->Interpolate(xintp,zintp); //the PSF map is given in um but the dtIn is in cm so we need to convert it | |
475 | // | |
476 | return qpixfrac; | |
29ad4146 | 477 | } |
478 | ||
c92b1537 | 479 | //______________________________________________________________________ |
480 | Double_t AliITSUSimulationPix::SpreadFunGauss2D(const Double_t *dtIn) | |
481 | { | |
f6b66dab | 482 | // calculate integral of charge in the cell with boundaries at X=dtIn[kCellX1]:dtIn[kCellX2] |
483 | // and Z=dtIn[kCellZ1]:dtIn[kCellZ2] | |
484 | // The spread function is assumed to be gaussian in 2D | |
485 | // Parameters should be: mean0,sigma0 | |
486 | return GausInt2D(fResponseParam->GetParameter(kG1SigX), // sigX | |
487 | dtIn[kCellX1]-fResponseParam->GetParameter(kG1MeanX), // x1-xmean | |
488 | dtIn[kCellX2]-fResponseParam->GetParameter(kG1MeanX), // x2-xmean | |
489 | fResponseParam->GetParameter(kG1SigZ), // sigZ | |
490 | dtIn[kCellZ1]-fResponseParam->GetParameter(kG1MeanZ), // z1-zmean | |
491 | dtIn[kCellZ2]-fResponseParam->GetParameter(kG1MeanZ)); // z2-zmean | |
492 | // | |
493 | } | |
c92b1537 | 494 | |
451f5018 | 495 | //______________________________________________________________________ |
f6b66dab | 496 | void AliITSUSimulationPix::RemoveDeadPixels() |
451f5018 | 497 | { |
f6b66dab | 498 | // Removes dead pixels on each chip (ladder) |
499 | // This should be called before going from sdigits to digits (i.e. from FrompListToDigits) | |
500 | ||
501 | AliITSUCalibrationPix* calObj = (AliITSUCalibrationPix*) GetCalibDead(); | |
502 | if (!calObj) return; | |
503 | // | |
504 | if (calObj->IsBad()) {ClearMap(); return;} // whole chip is masked | |
505 | // | |
506 | // prepare the list of r/o cycles seen | |
507 | Char_t cyclesSeen[2*kMaxROCycleAccept+1]; | |
508 | int ncycles = 0; | |
509 | for (int i=(2*kMaxROCycleAccept+1);i--;) if (fCyclesID[i]) cyclesSeen[ncycles++]=i-kMaxROCycleAccept; | |
510 | ||
511 | // remove single bad pixels one by one | |
512 | int nsingle = calObj->GetNrBadSingle(); | |
513 | UInt_t col,row; | |
514 | Int_t cycle; | |
515 | for (int i=nsingle;i--;) { | |
516 | calObj->GetBadPixelSingle(i,row,col); | |
517 | for (int icl=ncycles;icl--;) fSensMap->DeleteItem(col,row,cyclesSeen[icl]); | |
518 | } | |
519 | int nsd = fSensMap->GetEntriesUnsorted(); | |
520 | for (int isd=nsd;isd--;) { | |
521 | AliITSUSDigit* sd = (AliITSUSDigit*)fSensMap->AtUnsorted(isd); | |
522 | if (fSensMap->IsDisabled(sd)) continue; | |
523 | fSensMap->GetMapIndex(sd->GetUniqueID(),col,row,cycle); | |
524 | int chip = fSeg->GetChipFromChannel(0,col); | |
525 | // if (calObj->IsChipMarkedBad(chip)) fSensMap->Disable(sd); // this will simple mark the hit as bad | |
526 | if (calObj->IsChipMarkedBad(chip)) fSensMap->DeleteItem(sd); // this will suppress hit in the sorted list | |
527 | } | |
528 | // | |
451f5018 | 529 | } |
530 | ||
531 | //______________________________________________________________________ | |
f6b66dab | 532 | void AliITSUSimulationPix::AddNoisyPixels() |
451f5018 | 533 | { |
f6b66dab | 534 | // Adds noisy pixels on each chip (ladder) |
535 | // This should be called before going from sdigits to digits (i.e. FrompListToDigits) | |
536 | AliITSUCalibrationPix* calObj = (AliITSUCalibrationPix*) GetCalibNoisy(); | |
537 | if (!calObj) { AliDebug(10,Form(" No Calib Object for Noise!!! ")); return;} | |
538 | for (Int_t i=calObj->GetNrBad(); i--;) | |
539 | { | |
540 | if ( fResponseParam->GetParameter(kDigitalSim) < 1.0 ) | |
541 | UpdateMapNoise(calObj->GetBadColAt(i), calObj->GetBadRowAt(i),10*fSimuParam->GetPixThreshold(fChip->GetIndex())); | |
542 | else | |
543 | UpdateMapNoise(calObj->GetBadColAt(i), calObj->GetBadRowAt(i),kNoisyPixOCDB ); | |
544 | } | |
545 | // | |
451f5018 | 546 | } |
547 | ||
548 | //______________________________________________________________________ | |
f6b66dab | 549 | void AliITSUSimulationPix::FrompListToDigits() |
451f5018 | 550 | { |
f6b66dab | 551 | // add noise and electronics, perform the zero suppression and add the digits to the list |
552 | // | |
553 | // RS may use for ordered random sample generation dl.acm.org/ft_gateway.cfm?id=356313&type=pdf | |
554 | // | |
555 | int nsd = fSensMap->GetEntriesUnsorted(); // sdigits added from the signal | |
556 | // | |
557 | // add different kinds of noise. | |
558 | Bool_t addNoisy = fSimuParam->GetPixAddNoisyFlag() && (nsd>0 || fSimuParam->GetPixNoiseInAllMod()); // do we generate noise? | |
559 | if (addNoisy) { | |
560 | AddNoisyPixels(); // constantly noisy channels | |
561 | AddRandomNoisePixels(0.0); // random noise: at the moment generate noise only for instance 0 | |
562 | nsd = fSensMap->GetEntriesUnsorted(); | |
451f5018 | 563 | } |
f6b66dab | 564 | // |
565 | if (nsd && fSimuParam->GetPixRemoveDeadFlag()) { | |
566 | RemoveDeadPixels(); | |
567 | // note that here we shall use GetEntries instead of GetEntriesUnsorted since the | |
568 | // later operates on the array where the elements are not removed by flagged | |
569 | nsd = fSensMap->GetEntries(); | |
451f5018 | 570 | } |
f6b66dab | 571 | if (!nsd) return; // nothing to digitize |
572 | // | |
573 | UInt_t row,col; | |
574 | Int_t iCycle,modId = fChip->GetIndex(); | |
575 | Double_t sig; | |
576 | const Int_t knmaxtrk=AliITSdigit::GetNTracks(); | |
577 | static AliITSU *aliITS = (AliITSU*)gAlice->GetModule("ITS"); | |
578 | static AliITSUDigitPix dig; | |
579 | // | |
580 | for (int i=0;i<nsd;i++) { | |
581 | AliITSUSDigit* sd = (AliITSUSDigit*)fSensMap->At(i); // ordered in index | |
582 | if (fSensMap->IsDisabled(sd)) continue; | |
583 | // | |
69c15b90 | 584 | sig=sd->GetSumSignal(); |
f6b66dab | 585 | if ( fResponseParam->GetParameter(kDigitalSim) < 1.0 && |
7413ca5b | 586 | sig<=fSimuParam->GetPixThreshold(modId)) continue; //Threshold only applies in analogue simulation |
f6b66dab | 587 | // |
588 | if (Abs(sig)>2147483647.0) { //RS? | |
589 | //PH 2147483647 is the max. integer | |
590 | //PH This apparently is a problem which needs investigation | |
591 | AliWarning(Form("Too big or too small signal value %f",sig)); | |
592 | } | |
593 | fSensMap->GetMapIndex(sd->GetUniqueID(),col,row,iCycle); | |
594 | dig.SetCoord1(col); | |
595 | dig.SetCoord2(row); | |
596 | dig.SetROCycle(iCycle); | |
597 | dig.SetSignal((Int_t)sig); | |
598 | dig.SetSignalPix((Int_t)sig); | |
599 | int ntr = sd->GetNTracks(); | |
600 | for (int j=0;j<ntr;j++) { | |
601 | dig.SetTrack(j,sd->GetTrack(j)); | |
602 | dig.SetHit(j,sd->GetHit(j)); | |
603 | } | |
604 | for (int j=ntr;j<knmaxtrk;j++) { | |
605 | dig.SetTrack(j,-3); | |
606 | dig.SetHit(j,-1); | |
607 | } | |
608 | aliITS->AddSimDigit(AliITSUGeomTGeo::kChipTypePix, &dig); | |
451f5018 | 609 | } |
f6b66dab | 610 | // |
451f5018 | 611 | } |
612 | ||
613 | //______________________________________________________________________ | |
f6b66dab | 614 | Int_t AliITSUSimulationPix::AddRandomNoisePixels(Double_t tof) |
b2679935 | 615 | { |
d8b69f72 | 616 | // create random noisy sdigits above threshold |
617 | // | |
618 | int modId = fChip->GetIndex(); | |
619 | int npix = fSeg->GetNPads(); | |
620 | int ncand = gRandom->Poisson( npix*fSimuParam->GetPixFakeRate() ); | |
621 | if (ncand<1) return 0; | |
622 | // | |
623 | double probNoisy,noiseSig,noiseMean,thresh; | |
624 | // | |
625 | UInt_t row,col; | |
626 | Int_t iCycle; | |
627 | static TArrayI ordSampleInd(100),ordSample(100); //RS!!! static is not thread-safe!!! | |
628 | ncand = GenOrderedSample(npix,ncand,ordSample,ordSampleInd); | |
629 | int* ordV = ordSample.GetArray(); | |
630 | int* ordI = ordSampleInd.GetArray(); | |
631 | // | |
632 | if ( fResponseParam->GetParameter(kDigitalSim) < 1.0 ) { | |
633 | thresh = fSimuParam->GetPixThreshold(modId); | |
634 | fSimuParam->GetPixNoise(modId, noiseSig, noiseMean); | |
635 | probNoisy = AliITSUSimuParam::CalcProbNoiseOverThreshold(noiseMean,noiseSig,thresh); // prob. to have noise above threshold | |
636 | // | |
637 | for (int j=0;j<ncand;j++) { | |
638 | fSensMap->GetMapIndex((UInt_t)ordV[ordI[j]],col,row,iCycle); // create noisy digit | |
639 | iCycle = (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fROTimeFun)(row,col,tof); | |
640 | UpdateMapNoise(col,row,AliITSUSimuParam::GenerateNoiseQFunction(probNoisy,noiseMean,noiseSig), iCycle); | |
f6b66dab | 641 | } |
d8b69f72 | 642 | } |
643 | else { | |
644 | for (int j=0;j<ncand;j++) { | |
645 | fSensMap->GetMapIndex((UInt_t)ordV[ordI[j]],col,row,iCycle); // create noisy digit | |
646 | iCycle = (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fROTimeFun)(row,col,tof); | |
647 | UpdateMapNoise(col,row,kNoisyPixRnd, iCycle); | |
f6b66dab | 648 | } |
d8b69f72 | 649 | } |
650 | return ncand; | |
451f5018 | 651 | } |
652 | ||
1cdd0456 | 653 | |
451f5018 | 654 | //______________________________________________________________________ |
f6b66dab | 655 | void AliITSUSimulationPix::SetCoupling(AliITSUSDigit* old) |
451f5018 | 656 | { |
f6b66dab | 657 | // Take into account the coupling between adiacent pixels. |
658 | // The parameters probcol and probrow are the probability of the | |
659 | // signal in one pixel shared in the two adjacent pixels along | |
660 | // the column and row direction, respectively. | |
661 | // Note pList is goten via GetMap() and chip is not need any more. | |
662 | // Otherwise it is identical to that coded by Tiziano Virgili (BSN). | |
663 | UInt_t col,row; | |
664 | Int_t iCycle; | |
665 | Double_t pulse1,pulse2; | |
666 | Double_t couplR=0.0,couplC=0.0; | |
667 | Double_t xr=0.; | |
668 | // | |
669 | fSensMap->GetMapIndex(old->GetUniqueID(),col,row,iCycle); | |
670 | int cycle = iCycle; | |
671 | fSimuParam->GetPixCouplingParam(couplC,couplR); | |
672 | if (GetDebug(2)) AliInfo(Form("(col=%d,row=%d,couplC=%e couplR=%e", | |
673 | col,row,couplC,couplR)); | |
674 | pulse2 = pulse1 = old->GetSignal(); | |
675 | if (pulse1<fSimuParam->GetPixMinElToAdd()) return; // too small signal | |
676 | for (Int_t isign=-1;isign<=1;isign+=2) { | |
677 | // | |
678 | // loop in col direction | |
679 | int j1 = int(col) + isign; | |
680 | xr = gRandom->Rndm(); | |
681 | if ( !((j1<0) || (j1>fSeg->Npz()-1) || (xr>couplC)) ) UpdateMapSignal(UInt_t(j1),row,old->GetTrack(0),old->GetHit(0),pulse1,cycle); | |
682 | // | |
683 | // loop in row direction | |
684 | int j2 = int(row) + isign; | |
685 | xr = gRandom->Rndm(); | |
686 | if ( !((j2<0) || (j2>fSeg->Npx()-1) || (xr>couplR)) ) UpdateMapSignal(col,UInt_t(j2),old->GetTrack(0),old->GetHit(0),pulse2,cycle); | |
687 | } | |
688 | // | |
451f5018 | 689 | } |
690 | ||
691 | //______________________________________________________________________ | |
f6b66dab | 692 | void AliITSUSimulationPix::SetCouplingOld(AliITSUSDigit* old) |
451f5018 | 693 | { |
f6b66dab | 694 | // Take into account the coupling between adiacent pixels. |
695 | // The parameters probcol and probrow are the fractions of the | |
696 | // signal in one pixel shared in the two adjacent pixels along | |
697 | // the column and row direction, respectively. | |
698 | // Inputs: | |
699 | // old existing AliITSUSDigit | |
700 | // ntrack track incex number | |
701 | // idhit hit index number | |
702 | // chip chip number | |
703 | // | |
704 | UInt_t col,row; | |
705 | Int_t cycle; | |
706 | Int_t modId = fChip->GetIndex(); | |
707 | Double_t pulse1,pulse2; | |
708 | Double_t couplR=0.0,couplC=0.0; | |
709 | // | |
710 | fSensMap->GetMapIndex(old->GetUniqueID(),col,row,cycle); | |
711 | fSimuParam->GetPixCouplingParam(couplC,couplR); | |
712 | if (GetDebug(3)) AliInfo(Form("(col=%d,row=%d,roCycle=%d) couplC=%e couplR=%e",col,row,cycle,couplC,couplR)); | |
713 | // | |
714 | if (old->GetSignal()<fSimuParam->GetPixMinElToAdd()) return; // too small signal | |
715 | for (Int_t isign=-1;isign<=1;isign+=2) {// loop in col direction | |
716 | pulse2 = pulse1 = old->GetSignal(); | |
717 | // | |
718 | int j1 = int(col)+isign; | |
719 | pulse1 *= couplC; | |
720 | if ((j1<0)||(j1>fSeg->Npz()-1)||(pulse1<fSimuParam->GetPixThreshold(modId))) pulse1 = old->GetSignal(); | |
721 | else UpdateMapSignal(UInt_t(j1),row,old->GetTrack(0),old->GetHit(0),pulse1,cycle); | |
722 | ||
723 | // loop in row direction | |
724 | int j2 = int(row) + isign; | |
725 | pulse2 *= couplR; | |
726 | if ((j2<0)||(j2>(fSeg->Npx()-1))||(pulse2<fSimuParam->GetPixThreshold(modId))) pulse2 = old->GetSignal(); | |
727 | else UpdateMapSignal(col,UInt_t(j2),old->GetTrack(0),old->GetHit(0),pulse2,cycle); | |
728 | } // for isign | |
451f5018 | 729 | } |
730 | ||
c92b1537 | 731 | //______________________________________________________________________ |
29ad4146 | 732 | void AliITSUSimulationPix::SetResponseParam(AliITSUParamList* resp) |
c92b1537 | 733 | { |
f6b66dab | 734 | // attach response parameterisation data |
735 | fResponseParam = resp; | |
736 | // | |
737 | int spreadID = Nint(fResponseParam->GetParameter(AliITSUSimulationPix::kChargeSpreadType)); | |
738 | const char* hname = 0; | |
739 | fSpread2DHisto = 0; | |
740 | // | |
741 | switch (spreadID) { | |
742 | // | |
743 | case kSpreadFunHisto: | |
744 | fSpreadFun = &AliITSUSimulationPix::SpreadFrom2DHisto; | |
745 | hname = fResponseParam->GetParName(AliITSUSimulationPix::kChargeSpreadType); | |
746 | if (!(fSpread2DHisto=(TH2*)fResponseParam->GetParamObject(hname))) | |
747 | AliFatal(Form("Did not find 2D histo %s for charge spread parameterization",hname)); | |
748 | break; | |
749 | // | |
750 | case kSpreadFunDoubleGauss2D: | |
751 | fSpreadFun = &AliITSUSimulationPix::SpreadFunDoubleGauss2D; | |
752 | break; | |
753 | // | |
754 | case kSpreadFunGauss2D: | |
755 | fSpreadFun = &AliITSUSimulationPix::SpreadFunGauss2D; | |
756 | break; | |
757 | // | |
758 | default: AliFatal(Form("Did not find requested spread function id=%d",spreadID)); | |
759 | } | |
760 | // | |
761 | int readoutType = Nint(fResponseParam->GetParameter(kReadOutSchemeType)); | |
762 | switch (readoutType) { | |
763 | case kReadOutStrobe: | |
764 | fROTimeFun = &AliITSUSimulationPix::GetReadOutCycle; | |
765 | break; | |
766 | case kReadOutRollingShutter: | |
767 | fROTimeFun = &AliITSUSimulationPix::GetReadOutCycleRollingShutter; | |
768 | break; | |
769 | default: AliFatal(Form("Did not find requested readout time type id=%d",readoutType)); | |
770 | } | |
771 | ||
772 | //___ Set the Rolling Shutter read-out window | |
773 | fReadOutCycleLength = fResponseParam->GetParameter(kReadOutCycleLength); | |
774 | //___ Pixel discrimination threshold, and the S/N cut | |
775 | fSimuParam->SetPixThreshold(fResponseParam->GetParameter(kPixNoiseMPV) *fResponseParam->GetParameter(kPixSNDisrcCut) , fResponseParam->GetParameter(kPixSNDisrcCut),-1); //for all chips | |
776 | //___ Minimum number of electrons to add | |
777 | fSimuParam->SetPixMinElToAdd(fResponseParam->GetParameter(kPixMinElToAdd)); | |
778 | //___ Set the Pixel Noise MPV and Sigma (the noise distribution is Landau not Gauss due to RTN) | |
779 | fSimuParam->SetPixNoise( fResponseParam->GetParameter(kPixNoiseMPV), fResponseParam->GetParameter(kPixNoiseSigma), -1); //for all chips | |
780 | //___ Pixel fake hit rate | |
781 | fSimuParam->SetPixFakeRate( fResponseParam->GetParameter(kPixFakeRate) ); | |
782 | //___ To apply the noise or not | |
783 | if ( fResponseParam->GetParameter(kPixNoiseIsOn) > 0.01) fSimuParam->SetPixAddNoisyFlag(kTRUE); | |
784 | else fSimuParam->SetPixAddNoisyFlag(kFALSE); | |
785 | // | |
786 | if(fResponseParam->GetParameter(kPixNoiseInAllMod) > 0.01 ) fSimuParam->SetPixNoiseInAllMod(kTRUE); | |
787 | else fSimuParam->SetPixNoiseInAllMod(kFALSE); | |
788 | // | |
789 | // Double_t vGeVToQ = fSimuParam->GetGeVToCharge(); | |
790 | fGlobalChargeScale = fResponseParam->GetParameter(kSpreadFunGlobalQScale); | |
791 | ||
792 | AliDebug(10,Form("=============== Setting the response start ============================")); | |
793 | AliDebug(10,Form("=============== Digital (1) / Analogue (0) simu: %f",fResponseParam->GetParameter(kDigitalSim))); | |
794 | AliDebug(10,Form("=============== RO type: %d",readoutType)); | |
795 | AliDebug(10,Form("=============== RO cycle lenght: %lf",fReadOutCycleLength)); | |
796 | AliDebug(10,Form("=============== Noise MPV: %lf",fResponseParam->GetParameter(kPixNoiseMPV))); | |
797 | AliDebug(10,Form("=============== Noise Sigma: %lf",fResponseParam->GetParameter(kPixNoiseSigma))); | |
798 | AliDebug(10,Form("=============== Fake rate: %lf",fResponseParam->GetParameter(kPixFakeRate))); | |
799 | AliDebug(10,Form("=============== Noise On/Off: %d",fSimuParam->GetPixAddNoisyFlag())); | |
800 | AliDebug(10,Form("=============== Noise in all mod on/off: %d",fSimuParam->GetPixNoiseInAllMod())); | |
801 | AliDebug(10,Form("=============== Global Charge scale: %lf",fGlobalChargeScale)); | |
802 | AliDebug(10,Form("=============== Setting the response done ============================")); | |
29ad4146 | 803 | |
c92b1537 | 804 | } |
0ebc85cf | 805 | |
806 | //______________________________________________________________________ | |
b2679935 | 807 | Int_t AliITSUSimulationPix::GetReadOutCycleRollingShutter(Int_t row, Int_t col, Double_t hitTime) |
0ebc85cf | 808 | { |
f6b66dab | 809 | // |
810 | // Get the read-out cycle of the hit in the given column/row of the sensor. | |
811 | // hitTime is the time of the subhit (hit is divided to nstep charge deposit) in seconds | |
812 | // globalPhaseShift gives the start of the RO for the cycle in pixel wrt the LHC clock | |
813 | // GetRollingShutterWindow give the with of the rolling shutter read out window | |
814 | // | |
815 | double tmin = fReadOutCycleOffset + fReadOutCycleLength*(double(row)/fSeg->Npx()-1.); | |
816 | int cycle = Nint( (hitTime-tmin)/fReadOutCycleLength - 0.5 ); | |
817 | AliDebug(3,Form("Rolling shutter at row%d/col%d: particle time: %e, tmin: %e : tmax %e -> cycle:%d",row,col,hitTime,tmin, | |
818 | tmin+fReadOutCycleLength,cycle)); | |
819 | return cycle; | |
820 | // | |
0ebc85cf | 821 | } |
822 | ||
823 | //______________________________________________________________________ | |
b2679935 | 824 | Int_t AliITSUSimulationPix::GetReadOutCycle(Int_t row, Int_t col, Double_t hitTime) |
0ebc85cf | 825 | { |
f6b66dab | 826 | // |
827 | // Check whether the hit is in the read out window of the given column/row of the sensor | |
828 | // | |
829 | AliDebug(3,Form("Strobe readout: row%d/col%d: particle time: %e, tmin: %e, tmax %e", | |
830 | row,col,hitTime,fReadOutCycleOffset,fReadOutCycleOffset+fReadOutCycleLength)); | |
831 | hitTime -= fReadOutCycleOffset+0.5*fReadOutCycleLength; | |
832 | return (hitTime<0 || hitTime>fReadOutCycleLength) ? kMaxROCycleAccept+1 : 0; | |
833 | // | |
0ebc85cf | 834 | } |
835 | ||
29ad4146 | 836 | //_______________________________________________________________________ |
ee58ce21 | 837 | void AliITSUSimulationPix::CalcDiodeShiftInPixel(Int_t xrow, Int_t zcol, Float_t &x, Float_t &z) |
29ad4146 | 838 | { |
f6b66dab | 839 | // |
840 | // Calculates the shift of the diode wrt the geometric center of the pixel. | |
841 | // It is needed for staggerred pixel layout or double diode pixels with assymetric center | |
842 | // The shift can depend on the column or line or both... | |
843 | // The x and z are passed in cm | |
844 | // | |
845 | ((AliITSUSegmentationPix*)fSeg)->GetDiodShift(xrow,zcol,x,z); | |
846 | // | |
29ad4146 | 847 | } |
f6b66dab | 848 | |
849 | //______________________________________________________________________ | |
850 | void AliITSUSimulationPix::Hits2SDigitsFastDigital() | |
851 | { | |
852 | // Does the digital chip response simulation | |
853 | // AliITSUChip *mod Pointer to this chip | |
854 | // | |
855 | ||
856 | ||
857 | TObjArray *hits = fChip->GetHits(); | |
858 | Int_t nhits = hits->GetEntriesFast(); | |
859 | if (nhits<=0) return; | |
860 | // | |
861 | Int_t h,ix,iz; | |
862 | Int_t idtrack; | |
f6b66dab | 863 | Double_t tof,x0=0.0,x1=0.0,y0=0.0,y1=0.0,z0=0.0,z1=0.0; |
69c15b90 | 864 | Double_t el,de=0.0; |
f6b66dab | 865 | |
866 | // | |
867 | for (h=0;h<nhits;h++) { | |
868 | // | |
869 | if (!fChip->LineSegmentL(h,x0,x1,y0,y1,z0,z1,de,tof,idtrack)) continue; | |
870 | // | |
69c15b90 | 871 | //double st = Sqrt(x1*x1+y1*y1+z1*z1); |
f6b66dab | 872 | |
873 | //___ place hit to the middle of the path segment - CHANGE LATER ! | |
69c15b90 | 874 | // keep coordinates float (required by AliSegmentation) |
875 | float x = (x0+x1)/2.0; | |
876 | //float y = (y0+y1)/2.0; | |
877 | float z = (z0+z1)/2.0; | |
f6b66dab | 878 | // |
879 | if (!(fSeg->LocalToDet(x,z,ix,iz))) continue; // outside | |
880 | // | |
881 | // Check if the hit is inside readout window | |
882 | int cycleRO = (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fROTimeFun)(ix,iz,tof); | |
883 | if (Abs(cycleRO)>kMaxROCycleAccept) continue; | |
884 | // | |
885 | // | |
886 | el = de / fSimuParam->GetGeVToCharge(); | |
887 | // | |
888 | PlaceDigitalPixels(x,z,el,tof,idtrack,h); | |
889 | // | |
890 | } // Loop over all hits h | |
891 | ||
892 | } | |
893 | //______________________________________________________________________ | |
894 | void AliITSUSimulationPix::PlaceDigitalPixels(Double_t x0hit,Double_t z0hit, Double_t el, Double_t tof, Int_t tID, Int_t hID) | |
895 | { | |
896 | // Place the digital pixel positions on the sensor | |
897 | // Inputs: | |
898 | // Double_t x0hit x position of point where charge is liberated (local) - hit | |
899 | // Double_t z0hit z position of point where charge is liberated (local) - hit | |
900 | // Double_t el number of electrons liberated in this step | |
901 | // Double_t sigx Sigma difusion along x for this step (y0 dependent) | |
902 | // Double_t sigz Sigma difusion along z for this step (z0 dependent) | |
903 | // Int_t tID track number | |
904 | // Int_t hID hit "hit" index number | |
905 | // | |
906 | ||
907 | ||
908 | Int_t ix,iz,nx,nz; | |
909 | Float_t x,z; // keep coordinates float (required by AliSegmentation) | |
910 | Float_t distX = 0, distZ = 0; | |
911 | ||
912 | //___ TEMPORARY - place a fixed pattern cluster COG to a distance d(x,z) away from hit - TEMPORARY | |
913 | // Pattern used (not realistic ebye but averaging over events yes): | |
914 | // -+- | |
915 | // +++ | |
916 | // -+- | |
917 | // | |
918 | //___ This list should come from a look up table based on CluTypeID as well as COG coord | |
919 | ||
920 | // | |
921 | TRandom3 rnd; | |
922 | distX = rnd.Uniform(-5.0*1e-4, 5.0*1e-4); //in um | |
923 | distZ = rnd.Uniform(-5.0*1e-4, 5.0*1e-4); //in um | |
924 | // | |
925 | x = x0hit + distX; | |
926 | z = z0hit + distZ; | |
927 | // | |
928 | if(!fSeg->LocalToDet(x,z,ix,iz)) return; // if clu CoG is outside of the chip skipp the cluster -> refine later | |
929 | // | |
930 | const Int_t nCluPixels = 5; | |
931 | Int_t aPixListX[nCluPixels] = { 0, -1, 0, 1, 0}; | |
932 | Int_t aPixListZ[nCluPixels] = { 1, 0, 0, 0, -1}; | |
933 | // | |
934 | Double_t s = el / 1.0 / nCluPixels; | |
935 | // | |
936 | int cycleRO; | |
937 | // | |
938 | for (Int_t ipix = 0 ; ipix < nCluPixels; ipix++) | |
939 | { | |
940 | nx = ix + aPixListX[ipix]; | |
941 | nz = iz + aPixListZ[ipix]; | |
942 | cycleRO = (((AliITSUSimulationPix*)this)->*AliITSUSimulationPix::fROTimeFun)(ix,iz,tof); | |
943 | if ( nx >= 0 && nx <= fSeg -> Npx() && nz >= 0 && nz <= fSeg -> Npz() ) UpdateMapSignal(nz,nx,tID,hID,s,cycleRO); //if the pixel is in the detector | |
944 | } | |
945 | ||
946 | ||
947 | ||
948 | } | |
949 | ||
950 | ||
951 |