1 // **************************************************************************
2 // * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 // * Author: The ALICE Off-line Project. *
5 // * Contributors are mentioned in the code where appropriate. *
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 // **************************************************************************
16 //====================================================================================================================================================
18 // Main class of the ALICE Muon Forward Tracker
20 // Contact author: antonio.uras@cern.ch
22 //====================================================================================================================================================
26 #include "TGeoManager.h"
27 #include "TGeoVolume.h"
28 #include "TGeoMatrix.h"
29 #include "TVirtualMC.h"
30 #include "TClonesArray.h"
31 #include "TGeoGlobalMagField.h"
33 #include "AliLoader.h"
34 #include "AliDetector.h"
38 #include "AliMFTHit.h"
39 #include "AliMFTDigit.h"
40 #include "AliMFTCluster.h"
41 #include "AliTrackReference.h"
42 #include "AliMFTSegmentation.h"
43 #include "AliMFTDigitizer.h"
44 #include "AliMFTPlane.h"
46 #include "TObjArray.h"
50 //====================================================================================================================================================
59 fRecPointsPerPlane(0),
63 fChargeDispersion(25.e-4),
64 fSingleStepForChargeDispersion(0),
65 fNStepForChargeDispersion(4),
66 fDensitySupportOverSi(0.036),
67 fFileNameForUnderyingEvent(0),
68 fFileNameForPileUpEvents(0),
70 fUnderlyingEventID(-1)
73 // default constructor
75 for (Int_t iPileUp=0; iPileUp<AliMFTConstants::fNMaxPileUpEvents; iPileUp++) fPileUpEventsIDs[iPileUp] = -1;
80 //====================================================================================================================================================
82 AliMFT::AliMFT(const Char_t *name, const Char_t *title):
83 AliDetector(name, title),
89 fRecPointsPerPlane(0),
93 fChargeDispersion(25.e-4),
94 fSingleStepForChargeDispersion(0),
95 fNStepForChargeDispersion(4),
96 fDensitySupportOverSi(0.036),
97 fFileNameForUnderyingEvent(0),
98 fFileNameForPileUpEvents(0),
100 fUnderlyingEventID(-1)
103 for (Int_t iPileUp=0; iPileUp<AliMFTConstants::fNMaxPileUpEvents; iPileUp++) fPileUpEventsIDs[iPileUp] = -1;
105 fNameGeomFile = "AliMFTGeometry.root";
113 //====================================================================================================================================================
115 AliMFT::AliMFT(const Char_t *name, const Char_t *title, Char_t *nameGeomFile):
116 AliDetector(name, title),
122 fRecPointsPerPlane(0),
126 fChargeDispersion(25.e-4),
127 fSingleStepForChargeDispersion(0),
128 fNStepForChargeDispersion(4),
129 fDensitySupportOverSi(0.036),
130 fFileNameForUnderyingEvent(0),
131 fFileNameForPileUpEvents(0),
133 fUnderlyingEventID(-1)
136 for (Int_t iPileUp=0; iPileUp<AliMFTConstants::fNMaxPileUpEvents; iPileUp++) fPileUpEventsIDs[iPileUp] = -1;
138 fNameGeomFile = nameGeomFile;
146 //====================================================================================================================================================
150 if (fSDigitsPerPlane) { fSDigitsPerPlane->Delete(); delete fSDigitsPerPlane; }
151 if (fDigitsPerPlane) { fDigitsPerPlane->Delete(); delete fDigitsPerPlane; }
152 if (fRecPointsPerPlane) { fRecPointsPerPlane->Delete(); delete fRecPointsPerPlane; }
156 //====================================================================================================================================================
158 void AliMFT::CreateMaterials() {
160 // Definition of MFT materials - to be updated to the most recent values
162 AliInfo("Start MFT materials");
164 // data from PDG booklet 2002 density [gr/cm^3] rad len [cm] abs len [cm]
165 Float_t aSi = 28.085 , zSi = 14. , dSi = 2.329 , radSi = 21.82/dSi , absSi = 108.4/dSi ; // Silicon
166 Float_t aCarb = 12.01 , zCarb = 6. , dCarb = 2.265 , radCarb = 18.8 , absCarb = 49.9 ; // Carbon
167 Float_t aAlu = 26.98 , zAlu = 13. , dAlu = 2.70 , radAlu = 8.897 , absAlu = 39.70 ; // Aluminum
170 const Int_t nAir = 4;
171 Float_t aAir[nAir] = {12, 14, 16, 36} , zAir[nAir] = {6, 7, 8, 18} , wAir[nAir]={0.000124, 0.755267, 0.231781, 0.012827} , dAir=0.00120479;
174 const Int_t nWater = 2;
175 Float_t aWater[nWater] = {1.00794, 15.9994} , zWater[nWater] = {1, 8} , wWater[nWater] = {0.111894, 0.888106} , dWater=1.;
178 const Int_t nSiO2 = 2;
179 Float_t aSiO2[nSiO2] = {15.9994, 28.0855} , zSiO2[nSiO2] = {8., 14.} , wSiO2[nSiO2] = {0.532565, 0.467435} , dSiO2 = 2.20;
182 const Int_t nInox = 9;
183 Float_t aInox[nInox] = {12.0107, 54.9380, 28.0855, 30.9738, 32.0660, 58.6928, 51.9961, 95.9400, 55.8450} ;
184 Float_t zInox[nInox] = { 6, 25, 14, 15, 16, 28, 24, 42, 26 } ;
185 Float_t wInox[nInox] = {0.0003, 0.02, 0.01, 0.00045, 0.0003, 0.12, 0.17, 0.025, 0.65395} ;
186 Float_t dInox = 8.03;
188 Int_t matId = 0; // tmp material id number
189 Int_t unsens = 0, sens=1; // sensitive or unsensitive medium
190 Int_t itgfld = 3; // type of field intergration 0 no field -1 user in guswim 1 Runge Kutta 2 helix 3 const field along z
191 Float_t maxfld = 5.; // max field value
193 Float_t tmaxfd = -10.0; // max deflection angle due to magnetic field in one step
194 Float_t stemax = 0.001; // max step allowed [cm]
195 Float_t deemax = -0.2; // maximum fractional energy loss in one step 0<deemax<=1
196 Float_t epsil = 0.001; // tracking precision [cm]
197 Float_t stmin = -0.001; // minimum step due to continuous processes [cm] (negative value: choose it automatically)
199 Float_t tmaxfdSi = 0.1; // max deflection angle due to magnetic field in one step
200 Float_t stemaxSi = 5.0e-4; // maximum step allowed [cm]
201 Float_t deemaxSi = 0.1; // maximum fractional energy loss in one step 0<deemax<=1
202 Float_t epsilSi = 0.5e-4; // tracking precision [cm]
203 Float_t stminSi = -0.001; // minimum step due to continuous processes [cm] (negative value: choose it automatically)
205 Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ(); // from CreateMaterials in STRUCT/AliPIPEv3.cxx
206 Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max(); // from CreateMaterials in STRUCT/AliPIPEv3.cxx
208 AliMixture(++matId,"Air", aAir, zAir, dAir, nAir, wAir);
209 AliMedium(kAir, "Air", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
211 AliMaterial(++matId, "Si", aSi, zSi, dSi, radSi, absSi);
212 AliMedium(kSi, "Si", matId, sens, isxfld, sxmgmx, tmaxfdSi, stemaxSi, deemaxSi, epsilSi, stminSi);
214 AliMaterial(++matId, "Readout", aSi, zSi, dSi, radSi, absSi);
215 AliMedium(kReadout, "Readout", matId, unsens, isxfld, sxmgmx, tmaxfdSi, stemaxSi, deemaxSi, epsilSi, stminSi);
217 AliMaterial(++matId, "Support", aSi, zSi, dSi*fDensitySupportOverSi, radSi/fDensitySupportOverSi, absSi/fDensitySupportOverSi);
218 AliMedium(kSupport, "Support", matId, unsens, isxfld, sxmgmx, tmaxfdSi, stemaxSi, deemaxSi, epsilSi, stminSi);
220 AliMaterial(++matId, "Carbon", aCarb, zCarb, dCarb, radCarb, absCarb );
221 AliMedium(kCarbon, "Carbon", matId, unsens, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
223 AliMaterial(++matId, "Alu", aAlu, zAlu, dAlu, radAlu, absAlu);
224 AliMedium(kAlu, "Alu", matId, unsens, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
226 AliMixture(++matId, "Water", aWater, zWater, dWater, nWater, wWater);
227 AliMedium(kWater, "Water", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
229 AliMixture(++matId, "SiO2", aSiO2, zSiO2, dSiO2, nSiO2, wSiO2);
230 AliMedium(kSiO2, "SiO2", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
232 AliMixture(++matId, "Inox", aInox, zInox, dInox, nInox, wInox);
233 AliMedium(kInox, "Inox", matId, unsens, itgfld, maxfld, tmaxfd, stemax, deemax, epsil, stmin);
235 AliInfo("End MFT materials");
239 //====================================================================================================================================================
241 void AliMFT::CreateGeometry() {
243 // Creates detailed geometry simulation (currently GEANT volumes tree)
245 AliInfo("Start MFT preliminary version building");
246 if(!TVirtualMC::GetMC()->IsRootGeometrySupported()) return;
247 TGeoVolumeAssembly *vol = CreateVol();
248 AliInfo("TGeoVolumeAssembly created!");
249 gGeoManager->GetVolume("ALIC")->AddNode(vol,0);
250 AliInfo("Stop MFT preliminary version building");
252 if (fNStepForChargeDispersion) fSingleStepForChargeDispersion = fChargeDispersion/Double_t(fNStepForChargeDispersion);
256 //====================================================================================================================================================
258 void AliMFT::AddAlignableVolumes() {
260 // Create entries for alignable volumes associating the symbolic volume
261 // name with the corresponding volume path. Needs to be syncronized with
262 // eventual changes in the geometry.
264 TString sysName = "MFT";
265 TString volPath = "/ALIC_1/MFT_0";
267 if (!gGeoManager->SetAlignableEntry(sysName.Data(),volPath.Data())) {
268 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid", sysName.Data(), volPath.Data()));
273 //====================================================================================================================================================
275 void AliMFT::StepManager() {
279 AliDebug(2, Form("Entering StepManager: TVirtualMC::GetMC()->CurrentVolName() = %s", TVirtualMC::GetMC()->CurrentVolName()));
281 if (!fSegmentation) AliFatal("No segmentation available");
283 if (!(this->IsActive())) return;
284 if (!(TVirtualMC::GetMC()->TrackCharge())) return;
286 TString planeNumber = TVirtualMC::GetMC()->CurrentVolName();
287 TString detElemNumber = TVirtualMC::GetMC()->CurrentVolName();
288 if (!(planeNumber.Contains("active"))) return;
289 planeNumber.Remove(0,9);
290 detElemNumber.Remove(0,18);
291 planeNumber.Remove(2);
292 detElemNumber.Remove(3);
293 Int_t detElemID = fSegmentation->GetDetElemGlobalID(planeNumber.Atoi(), detElemNumber.Atoi());
295 if (TVirtualMC::GetMC()->IsTrackExiting()) {
296 AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kMFT);
299 static TLorentzVector position, momentum;
300 static AliMFTHit hit;
305 if (TVirtualMC::GetMC()->IsTrackInside()) status += 1;
306 if (TVirtualMC::GetMC()->IsTrackEntering()) status += 2;
307 if (TVirtualMC::GetMC()->IsTrackExiting()) status += 4;
308 if (TVirtualMC::GetMC()->IsTrackOut()) status += 8;
309 if (TVirtualMC::GetMC()->IsTrackDisappeared()) status += 16;
310 if (TVirtualMC::GetMC()->IsTrackStop()) status += 32;
311 if (TVirtualMC::GetMC()->IsTrackAlive()) status += 64;
313 // ---------- Fill hit structure
315 hit.SetDetElemID(detElemID);
316 hit.SetPlane(planeNumber.Atoi());
317 hit.SetTrack(gAlice->GetMCApp()->GetCurrentTrackNumber());
319 TVirtualMC::GetMC()->TrackPosition(position);
320 TVirtualMC::GetMC()->TrackMomentum(momentum);
322 AliDebug(1, Form("AliMFT::StepManager()->%s Hit #%06d (x=%f, y=%f, z=%f) belongs to track %02d\n",
323 TVirtualMC::GetMC()->CurrentVolName(), fNhits, position.X(), position.Y(), position.Z(), gAlice->GetMCApp()->GetCurrentTrackNumber()));
325 hit.SetPosition(position);
326 hit.SetTOF(TVirtualMC::GetMC()->TrackTime());
327 hit.SetMomentum(momentum);
328 hit.SetStatus(status);
329 hit.SetEloss(TVirtualMC::GetMC()->Edep());
330 // hit.SetShunt(GetIshunt());
331 // if (TVirtualMC::GetMC()->IsTrackEntering()) {
332 // hit.SetStartPosition(position);
333 // hit.SetStartTime(TVirtualMC::GetMC()->TrackTime());
334 // hit.SetStartStatus(status);
335 // return; // don't save entering hit.
338 // Fill hit structure with this new hit.
339 new ((*fHits)[fNhits++]) AliMFTHit(hit);
341 // Save old position... for next hit.
342 // hit.SetStartPosition(position);
343 // hit.SetStartTime(TVirtualMC::GetMC()->TrackTime());
344 // hit.SetStartStatus(status);
350 //====================================================================================================================================================
352 TGeoVolumeAssembly* AliMFT::CreateVol() {
354 // method to create the MFT Geometry (silicon circular planes)
356 if (!fSegmentation) CreateGeometry();
358 TGeoVolumeAssembly *vol = new TGeoVolumeAssembly("MFT");
359 TGeoMedium *silicon = gGeoManager->GetMedium("MFT_Si");
360 TGeoMedium *readout = gGeoManager->GetMedium("MFT_Readout");
361 TGeoMedium *support = gGeoManager->GetMedium("MFT_Support");
362 TGeoMedium *carbon = gGeoManager->GetMedium("MFT_Carbon");
363 TGeoMedium *alu = gGeoManager->GetMedium("MFT_Alu");
364 TGeoMedium *water = gGeoManager->GetMedium("MFT_Water");
365 TGeoMedium *si02 = gGeoManager->GetMedium("MFT_SiO2");
366 TGeoMedium *inox = gGeoManager->GetMedium("MFT_Inox");
368 // ---- Cage & Services Description --------------------------------------------
369 // R. Tieulent - 17/01/2014 - Basic description for ITS/TPC matching studies
370 // -----------------------------------------------------------------------------
372 TGeoVolumeAssembly *cageNservices = new TGeoVolumeAssembly("MFT_cageNservices");
375 Float_t cageDz = 150./2.;
376 Float_t cageRMax = 49.5;
377 Float_t cageRMin = cageRMax - 0.120; // 0.64% of X0
379 TGeoVolume *cage = gGeoManager->MakeTube("MFT_cage", carbon, cageRMin, cageRMax, cageDz);
380 cage->SetLineColor(kBlue);
382 cageNservices->AddNode(cage,1,new TGeoTranslation(0., 0., 0. ));
384 // Services definition
385 TGeoVolumeAssembly *services = new TGeoVolumeAssembly("MFT_services");
388 Float_t busBarDz = 150.;
389 Float_t busBarThick = 0.1 ;
390 Float_t busBarWidth = 1.;
392 TGeoVolume *aluBusBar = gGeoManager->MakeBox("MFT_busbar", alu, busBarWidth/2., busBarThick/2., busBarDz/2.);
393 aluBusBar->SetLineColor(kYellow);
396 Float_t dPhiBusBar = 2.*TMath::Pi() / nBusBar;
397 Float_t dShift = cageRMin - busBarThick;
401 for (Int_t iBusBar=0; iBusBar<nBusBar; iBusBar++) {
402 Float_t phi = dPhiBusBar*iBusBar;
403 Float_t xp = dShift*TMath::Cos(phi);
404 Float_t yp = dShift*TMath::Sin(phi);
405 rot = new TGeoRotation();
406 rot->RotateZ(phi*TMath::RadToDeg()+90.);
407 services->AddNode(aluBusBar, iBusBar+1, new TGeoCombiTrans(xp,yp,0,rot));
410 // Cooling Services definition
411 TGeoVolumeAssembly *cooling = new TGeoVolumeAssembly("MFT_cooling");
413 Float_t coolingDz = 150.;
414 Float_t coolingR = 0.3 /2. ; // 3mm in diameter
415 Float_t coolingDR = 0.02 ; // Thickness of the pipe 0.2mm
417 TGeoVolume *coolingWater = gGeoManager->MakeTube("MFT_coolingWater", water, 0., coolingR, coolingDz/2.);
418 coolingWater->SetLineColor(kCyan);
419 cooling->AddNode(coolingWater, 1, new TGeoTranslation(0,0,0 ));
422 TGeoVolume *coolingPipes = gGeoManager->MakeTube("MFT_coolingPipes", inox, coolingR, coolingR+coolingDR, coolingDz/2.);
423 coolingPipes->SetLineColor(kGray);
424 cooling->AddNode(coolingPipes,1,new TGeoTranslation(0,0,0 ));
427 dShift = cageRMin - coolingR ;
430 for (Int_t iCooling=0; iCooling<nCooling; iCooling++) {
432 if (iCooling<nCooling/2) phi = dPhiBusBar*(iCooling+3) + phi0;
433 else phi = dPhiBusBar*(iCooling+9) + phi0;
434 Float_t xp = dShift*TMath::Cos(phi);
435 Float_t yp = dShift*TMath::Sin(phi);
436 services->AddNode(cooling, iCooling+1, new TGeoTranslation(xp,yp,0 ));
440 Float_t fiberDz = 150.;
441 Float_t fiberRadius = 0.0125 /2. ; // 0.125mm in diameter
443 TGeoVolume *fiber = gGeoManager->MakeTube("MFT_fiber", si02, 0., fiberRadius, fiberDz/2.);
444 fiber->SetLineColor(kCyan);
447 dShift = cageRMin - 2*fiberRadius;
450 for (Int_t iFiber=0; iFiber<nFiber; iFiber++) {
451 Float_t phi = dPhiBusBar*(Int_t)(iFiber/11) - phi0-(iFiber%11)*2.*TMath::ATan(fiberRadius/dShift);
452 Float_t xp = dShift*TMath::Cos(phi);
453 Float_t yp = dShift*TMath::Sin(phi);
454 services->AddNode(fiber, iFiber+1, new TGeoTranslation(xp,yp,0 ));
457 cageNservices->AddNode(services, 1, new TGeoTranslation(0., 0., 0. ));
459 vol->AddNode(cageNservices,1,new TGeoTranslation(0., 0., 0. ));
461 // ------------------- Creating volumes for MFT planes --------------------------------
463 Double_t origin[3] = {0};
465 for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
467 AliDebug(1, Form("Creating volumes for MFT plane %02d",iPlane));
469 AliMFTPlane *plane = fSegmentation->GetPlane(iPlane);
471 // --------- support element(s)
473 origin[0] = 0.5*(plane->GetSupportElement(0)->GetAxis(0)->GetXmax() + plane->GetSupportElement(0)->GetAxis(0)->GetXmin());
474 origin[1] = 0.5*(plane->GetSupportElement(0)->GetAxis(1)->GetXmax() + plane->GetSupportElement(0)->GetAxis(1)->GetXmin());
475 origin[2] = -0.5*(plane->GetSupportElement(0)->GetAxis(2)->GetXmax() + plane->GetSupportElement(0)->GetAxis(2)->GetXmin());
476 TGeoVolume *supportElem = gGeoManager->MakeTube(Form("MFT_plane%02d_support", iPlane), support,
477 plane->GetRMinSupport(),
478 plane->GetRMaxSupport(),
479 0.5*(plane->GetSupportElement(0)->GetAxis(2)->GetXmax() -
480 plane->GetSupportElement(0)->GetAxis(2)->GetXmin()) );
481 AliDebug(2, Form("Created vol %s", supportElem->GetName()));
482 supportElem->SetLineColor(kCyan-9);
483 vol -> AddNode(supportElem, 0, new TGeoTranslation(origin[0], origin[1], origin[2]));
485 AliDebug(1, "support elements created!");
487 // --------- active elements
489 for (Int_t iActive=0; iActive<plane->GetNActiveElements(); iActive++) {
491 Double_t dx = 0.5*TMath::Abs(plane->GetActiveElement(iActive)->GetAxis(0)->GetXmax() - plane->GetActiveElement(iActive)->GetAxis(0)->GetXmin());
492 Double_t dy = 0.5*TMath::Abs(plane->GetActiveElement(iActive)->GetAxis(1)->GetXmax() - plane->GetActiveElement(iActive)->GetAxis(1)->GetXmin());
493 Double_t dz = 0.5*TMath::Abs(plane->GetActiveElement(iActive)->GetAxis(2)->GetXmax() - plane->GetActiveElement(iActive)->GetAxis(2)->GetXmin());
494 dz /= Double_t(fNSlices);
496 origin[0] = 0.5*(plane->GetActiveElement(iActive)->GetAxis(0)->GetXmax() + plane->GetActiveElement(iActive)->GetAxis(0)->GetXmin());
497 origin[1] = 0.5*(plane->GetActiveElement(iActive)->GetAxis(1)->GetXmax() + plane->GetActiveElement(iActive)->GetAxis(1)->GetXmin());
499 for (Int_t iSlice=0; iSlice<fNSlices; iSlice++) {
500 origin[2] = -0.5*(plane->GetActiveElement(iActive)->GetAxis(2)->GetXmin() + 2*dz*(iSlice+1) + plane->GetActiveElement(iActive)->GetAxis(2)->GetXmin() + 2*dz*(iSlice) );
501 TGeoVolume *activeElem = gGeoManager->MakeBox(Form("MFT_plane%02d_active%03d_slice%02d", iPlane, iActive, iSlice), silicon, dx, dy, dz);
502 AliDebug(2, Form("Created vol %s", activeElem->GetName()));
503 activeElem->SetLineColor(kGreen);
504 vol -> AddNode(activeElem, 0, new TGeoTranslation(origin[0], origin[1], origin[2]));
509 AliDebug(1, "active elements created!");
511 // --------- readout elements
513 for (Int_t iReadout=0; iReadout<plane->GetNReadoutElements(); iReadout++) {
515 Double_t dx = 0.5*TMath::Abs(plane->GetReadoutElement(iReadout)->GetAxis(0)->GetXmax() - plane->GetReadoutElement(iReadout)->GetAxis(0)->GetXmin());
516 Double_t dy = 0.5*TMath::Abs(plane->GetReadoutElement(iReadout)->GetAxis(1)->GetXmax() - plane->GetReadoutElement(iReadout)->GetAxis(1)->GetXmin());
517 Double_t dz = 0.5*TMath::Abs(plane->GetReadoutElement(iReadout)->GetAxis(2)->GetXmax() - plane->GetReadoutElement(iReadout)->GetAxis(2)->GetXmin());
519 origin[0] = 0.5*(plane->GetReadoutElement(iReadout)->GetAxis(0)->GetXmax() + plane->GetReadoutElement(iReadout)->GetAxis(0)->GetXmin());
520 origin[1] = 0.5*(plane->GetReadoutElement(iReadout)->GetAxis(1)->GetXmax() + plane->GetReadoutElement(iReadout)->GetAxis(1)->GetXmin());
521 origin[2] = -0.5*(plane->GetReadoutElement(iReadout)->GetAxis(2)->GetXmax() + plane->GetReadoutElement(iReadout)->GetAxis(2)->GetXmin());
523 TGeoVolume *readoutElem = gGeoManager->MakeBox(Form("MFT_plane%02d_readout%03d", iPlane, iReadout), readout, dx, dy, dz);
524 AliDebug(2, Form("Created vol %s", readoutElem->GetName()));
525 readoutElem->SetLineColor(kRed);
526 vol -> AddNode(readoutElem, 0, new TGeoTranslation(origin[0], origin[1], origin[2]));
530 AliDebug(1, "readout elements created!");
538 //====================================================================================================================================================
540 void AliMFT::Hits2SDigits(){
542 // Interface method invoked from AliSimulation to create a list of sdigits corresponding to list of hits. Every hit generates one sdigit.
544 AliDebug(1,"Start Hits2SDigits.");
546 if (!fSegmentation) CreateGeometry();
548 if (!fLoader->TreeH()) fLoader->LoadHits();
550 if (!fLoader->TreeS()) {
552 for (Int_t iEvt=0;iEvt<fLoader->GetRunLoader()->GetNumberOfEvents(); iEvt++) {
554 fLoader->GetRunLoader()->GetEvent(iEvt);
555 fLoader->MakeTree("S");
559 AliDebug(1, Form("Event %03d: fLoader->TreeH()->GetEntries() = %2d", iEvt, Int_t(fLoader->TreeH()->GetEntries())));
561 for (Int_t iTrack=0; iTrack<fLoader->TreeH()->GetEntries(); iTrack++) {
562 fLoader->TreeH()->GetEntry(iTrack);
563 Hits2SDigitsLocal(Hits(), GetSDigitsList(), iTrack); // convert these hits to a list of sdigits
566 fLoader->TreeS()->Fill();
567 fLoader->WriteSDigits("OVERWRITE");
573 fLoader->UnloadHits();
574 fLoader->UnloadSDigits();
576 AliDebug(1,"Stop Hits2SDigits.");
580 //====================================================================================================================================================
582 void AliMFT::Hits2SDigitsLocal(TClonesArray *hits, const TObjArray *pSDig, Int_t track) {
584 // Add sdigits of these hits to the list
586 AliDebug(1, "Entering Hits2SDigitsLocal");
588 if (!fSegmentation) CreateGeometry();
590 TClonesArray *pSDigList[fNMaxPlanes];
591 for (Int_t iPlane=0; iPlane<fNMaxPlanes; iPlane++) pSDigList[iPlane] = NULL;
592 for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
593 pSDigList[iPlane] = (TClonesArray*) (*pSDig)[iPlane];
594 AliDebug(1,Form("Entries of pSDigList %3d; plane: %02d,",pSDigList[iPlane]->GetEntries(),iPlane));
595 if (!track && pSDigList[iPlane]->GetEntries()!=0) AliErrorClass("Some of sdigits lists is not empty");
598 for (Int_t iHit=0; iHit<hits->GetEntries(); iHit++) {
600 AliMFTHit *hit = (AliMFTHit*) hits->At(iHit);
602 // Creating "main digit"
604 AliMFTDigit *mainSDigit = new AliMFTDigit();
605 mainSDigit->SetEloss(hit->GetEloss());
606 mainSDigit->SetDetElemID(hit->GetDetElemID());
607 mainSDigit->SetPlane(hit->GetPlane());
608 mainSDigit->AddMCLabel(hit->GetTrack());
612 if (fSegmentation->Hit2PixelID(hit->X(), hit->Y(), mainSDigit->GetDetElemID(), xPixel, yPixel)) {
613 mainSDigit->SetPixID(xPixel, yPixel, 0);
614 mainSDigit->SetPixWidth(fSegmentation->GetPixelSizeX(mainSDigit->GetDetElemID()),
615 fSegmentation->GetPixelSizeY(mainSDigit->GetDetElemID()),
616 fSegmentation->GetPixelSizeZ(mainSDigit->GetDetElemID()));
617 mainSDigit->SetPixCenter(fSegmentation->GetPixelCenterX(mainSDigit->GetDetElemID(), xPixel),
618 fSegmentation->GetPixelCenterY(mainSDigit->GetDetElemID(), yPixel),
619 fSegmentation->GetPixelCenterZ(mainSDigit->GetDetElemID(), 0));
620 new ((*fSideDigits)[fSideDigits->GetEntries()]) AliMFTDigit(*mainSDigit);
621 AliDebug(1, Form("Created new sdigit (%f, %f, %f) from hit (%f, %f, %f)",
622 mainSDigit->GetPixelCenterX(), mainSDigit->GetPixelCenterY(), mainSDigit->GetPixelCenterZ(), hit->X(), hit->Y(), hit->Z()));
625 // creating "side digits" to simulate the effect of charge dispersion
627 Double_t pi4 = TMath::Pi()/4.;
628 for (Int_t iStep=0; iStep<fNStepForChargeDispersion; iStep++) {
629 Double_t shift = (iStep+1) * fSingleStepForChargeDispersion;
630 for (Int_t iAngle=0; iAngle<8; iAngle++) {
631 Double_t shiftX = shift*TMath::Cos(iAngle*pi4);
632 Double_t shiftY = shift*TMath::Sin(iAngle*pi4);
633 if (fSegmentation->Hit2PixelID(hit->X()+shiftX, hit->Y()+shiftY, hit->GetDetElemID(), xPixel, yPixel)) {
634 Bool_t digitExists = kFALSE;
635 for (Int_t iSideDigit=0; iSideDigit<fSideDigits->GetEntries(); iSideDigit++) {
636 if (xPixel==((AliMFTDigit*) fSideDigits->At(iSideDigit))->GetPixelX() &&
637 yPixel==((AliMFTDigit*) fSideDigits->At(iSideDigit))->GetPixelY()) {
643 AliMFTDigit *sideSDigit = new AliMFTDigit();
644 sideSDigit->SetEloss(0.);
645 sideSDigit->SetDetElemID(hit->GetDetElemID());
646 sideSDigit->SetPlane(hit->GetPlane());
647 sideSDigit->AddMCLabel(hit->GetTrack());
648 sideSDigit->SetPixID(xPixel, yPixel, 0);
649 sideSDigit->SetPixWidth(fSegmentation->GetPixelSizeX(sideSDigit->GetDetElemID()),
650 fSegmentation->GetPixelSizeY(sideSDigit->GetDetElemID()),
651 fSegmentation->GetPixelSizeZ(sideSDigit->GetDetElemID()));
652 sideSDigit->SetPixCenter(fSegmentation->GetPixelCenterX(sideSDigit->GetDetElemID(), xPixel),
653 fSegmentation->GetPixelCenterY(sideSDigit->GetDetElemID(), yPixel),
654 fSegmentation->GetPixelCenterZ(sideSDigit->GetDetElemID(), 0));
655 new ((*fSideDigits)[fSideDigits->GetEntries()]) AliMFTDigit(*sideSDigit);
661 // ------------ In case we should simulate a rectangular pattern of pixel...
663 if (fSegmentation->GetPlane(mainSDigit->GetPlane())->HasPixelRectangularPatternAlongY()) {
664 for (Int_t iSDigit=0; iSDigit<fSideDigits->GetEntries(); iSDigit++) {
665 AliMFTDigit *mySDig = (AliMFTDigit*) (fSideDigits->At(iSDigit));
666 if (mySDig->GetPixelX()%2 == mySDig->GetPixelY()%2) { // both pair or both odd
667 xPixel = mySDig->GetPixelX();
668 yPixel = mySDig->GetPixelY()+1;
669 if (fSegmentation->DoesPixelExist(mySDig->GetDetElemID(), xPixel, yPixel)) {
670 AliMFTDigit *newSDigit = new AliMFTDigit();
671 newSDigit->SetEloss(0.);
672 newSDigit->SetDetElemID(mySDig->GetDetElemID());
673 newSDigit->SetPlane(mySDig->GetDetElemID());
674 newSDigit->SetPixID(xPixel, yPixel, 0);
675 newSDigit->SetPixWidth(fSegmentation->GetPixelSizeX(newSDigit->GetDetElemID()),
676 fSegmentation->GetPixelSizeY(newSDigit->GetDetElemID()),
677 fSegmentation->GetPixelSizeZ(newSDigit->GetDetElemID()));
678 newSDigit->SetPixCenter(fSegmentation->GetPixelCenterX(newSDigit->GetDetElemID(), xPixel),
679 fSegmentation->GetPixelCenterY(newSDigit->GetDetElemID(), yPixel),
680 fSegmentation->GetPixelCenterZ(newSDigit->GetDetElemID(), 0));
681 new ((*fSideDigits)[fSideDigits->GetEntries()]) AliMFTDigit(*newSDigit);
685 xPixel = mySDig->GetPixelX();
686 yPixel = mySDig->GetPixelY()-1;
687 if (fSegmentation->DoesPixelExist(mySDig->GetDetElemID(), xPixel, yPixel)) {
688 AliMFTDigit *newSDigit = new AliMFTDigit();
689 newSDigit->SetEloss(0.);
690 newSDigit->SetDetElemID(mySDig->GetDetElemID());
691 newSDigit->SetPlane(mySDig->GetPlane());
692 newSDigit->SetPixID(xPixel, yPixel, 0);
693 newSDigit->SetPixWidth(fSegmentation->GetPixelSizeX(newSDigit->GetDetElemID()),
694 fSegmentation->GetPixelSizeY(newSDigit->GetDetElemID()),
695 fSegmentation->GetPixelSizeZ(newSDigit->GetDetElemID()));
696 newSDigit->SetPixCenter(fSegmentation->GetPixelCenterX(newSDigit->GetDetElemID(), xPixel),
697 fSegmentation->GetPixelCenterY(newSDigit->GetDetElemID(), yPixel),
698 fSegmentation->GetPixelCenterZ(newSDigit->GetDetElemID(), 0));
699 new ((*fSideDigits)[fSideDigits->GetEntries()]) AliMFTDigit(*newSDigit);
705 // -------- checking which pixels switched on have their diode actually within the charge dispersion radius
707 for (Int_t iSDigit=0; iSDigit<fSideDigits->GetEntries(); iSDigit++) {
708 AliMFTDigit *mySDig = (AliMFTDigit*) (fSideDigits->At(iSDigit));
709 Double_t distance = TMath::Sqrt(TMath::Power(mySDig->GetPixelCenterX()-hit->X(),2) + TMath::Power(mySDig->GetPixelCenterY()-hit->Y(),2));
710 if (fSegmentation->GetPlane(mySDig->GetPlane())->HasPixelRectangularPatternAlongY()) {
711 if (mySDig->GetPixelX()%2 == mySDig->GetPixelY()%2) { // both pair or both odd
712 if (distance<fChargeDispersion) {
713 AliDebug(1, Form("Created new sdigit (%f, %f, %f) from hit (%f, %f, %f)",
714 mySDig->GetPixelCenterX(), mySDig->GetPixelCenterY(), mySDig->GetPixelCenterZ(), hit->X(), hit->Y(), hit->Z()));
715 new ((*pSDigList[mySDig->GetPlane()])[pSDigList[mySDig->GetPlane()]->GetEntries()]) AliMFTDigit(*mySDig);
716 xPixel = mySDig->GetPixelX();
717 yPixel = mySDig->GetPixelY()+1;
718 if (fSegmentation->DoesPixelExist(mySDig->GetDetElemID(), xPixel, yPixel)) {
719 AliMFTDigit *newSDigit = new AliMFTDigit();
720 newSDigit->SetEloss(0.);
721 newSDigit->SetDetElemID(mySDig->GetDetElemID());
722 newSDigit->SetPlane(mySDig->GetPlane());
723 newSDigit->SetPixID(xPixel, yPixel, 0);
724 newSDigit->SetPixWidth(fSegmentation->GetPixelSizeX(newSDigit->GetDetElemID()),
725 fSegmentation->GetPixelSizeY(newSDigit->GetDetElemID()),
726 fSegmentation->GetPixelSizeZ(newSDigit->GetDetElemID()));
727 newSDigit->SetPixCenter(fSegmentation->GetPixelCenterX(newSDigit->GetDetElemID(), xPixel),
728 fSegmentation->GetPixelCenterY(newSDigit->GetDetElemID(), yPixel),
729 fSegmentation->GetPixelCenterZ(newSDigit->GetDetElemID(), 0));
730 AliDebug(1, Form("Created new sdigit (%f, %f, %f) from hit (%f, %f, %f)",
731 newSDigit->GetPixelCenterX(), newSDigit->GetPixelCenterY(), newSDigit->GetPixelCenterZ(), hit->X(), hit->Y(), hit->Z()));
732 new ((*pSDigList[newSDigit->GetPlane()])[pSDigList[newSDigit->GetPlane()]->GetEntries()]) AliMFTDigit(*newSDigit);
738 if (distance<fChargeDispersion) {
739 AliDebug(1, Form("Created new sdigit (%f, %f, %f) from hit (%f, %f, %f)",
740 mySDig->GetPixelCenterX(), mySDig->GetPixelCenterY(), mySDig->GetPixelCenterZ(), hit->X(), hit->Y(), hit->Z()));
741 new ((*pSDigList[mySDig->GetPlane()])[pSDigList[mySDig->GetPlane()]->GetEntries()]) AliMFTDigit(*mySDig);
746 fSideDigits->Delete();
750 AliDebug(1,"Exiting Hits2SDigitsLocal");
754 //====================================================================================================================================================
756 void AliMFT::MakeBranch(Option_t *option) {
758 // Create Tree branches
759 AliDebug(1, Form("Start with option= %s.",option));
761 const Int_t kBufSize = 4000;
763 const Char_t *cH = strstr(option,"H");
764 const Char_t *cD = strstr(option,"D");
765 const Char_t *cS = strstr(option,"S");
767 if (cH && fLoader->TreeH()) {
769 MakeBranchInTree(fLoader->TreeH(), "MFT", &fHits, kBufSize, 0);
772 if (cS && fLoader->TreeS()) {
774 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) MakeBranchInTree(fLoader->TreeS(),
775 Form("Plane_%02d",iPlane),
776 &((*fSDigitsPerPlane)[iPlane]),
780 if (cD && fLoader->TreeD()) {
782 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) MakeBranchInTree(fLoader->TreeD(),
783 Form("Plane_%02d",iPlane),
784 &((*fDigitsPerPlane)[iPlane]),
792 //====================================================================================================================================================
794 void AliMFT::SetTreeAddress() {
796 AliDebug(1, "AliMFT::SetTreeAddress()");
798 //Set branch address for the Hits and Digits Tree.
799 AliDebug(1, "Start.");
801 AliDebug(1, Form("AliMFT::SetTreeAddress Hits fLoader->TreeH() = %p\n", fLoader->TreeH()));
802 if (fLoader->TreeH() && fLoader->TreeH()->GetBranch("MFT")) {
804 fLoader->TreeH()->SetBranchAddress("MFT", &fHits);
807 AliDebug(1, Form("AliMFT::SetTreeAddress SDigits fLoader->TreeS() = %p\n", fLoader->TreeS()));
808 if (fLoader->TreeS() && fLoader->TreeS()->GetBranch("Plane_00")) {
810 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
811 fLoader->TreeS()->SetBranchAddress(Form("Plane_%02d",iPlane), &((*fSDigitsPerPlane)[iPlane]));
815 AliDebug(1, Form("AliMFT::SetTreeAddress Digits fLoader->TreeD() = %p\n", fLoader->TreeD()));
816 if (fLoader->TreeD() && fLoader->TreeD()->GetBranch("Plane_00")) {
818 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
819 fLoader->TreeD()->SetBranchAddress(Form("Plane_%02d",iPlane), &((*fDigitsPerPlane)[iPlane]));
823 AliDebug(1, Form("AliMFT::SetTreeAddress RecPoints fLoader->TreeR() = %p\n", fLoader->TreeR()));
824 if (fLoader->TreeR() && fLoader->TreeR()->GetBranch("Plane_00")) {
826 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) {
827 fLoader->TreeR()->SetBranchAddress(Form("Plane_%02d",iPlane), &((*fRecPointsPerPlane)[iPlane]));
835 //====================================================================================================================================================
837 void AliMFT::SetGeometry() {
839 AliInfo("AliMFT::SetGeometry\n");
841 fSegmentation = new AliMFTSegmentation(fNameGeomFile.Data());
843 fNPlanes = fSegmentation->GetNPlanes();
847 //====================================================================================================================================================
849 void AliMFT::CreateHits() {
851 // create array of hits
853 AliDebug(1, "AliMFT::CreateHits()");
856 fHits = new TClonesArray("AliMFTHit");
860 //====================================================================================================================================================
862 void AliMFT::CreateSDigits() {
864 // create sdigits list
866 AliDebug(1, "AliMFT::CreateSDigits()");
868 if (fSDigitsPerPlane) return;
869 fSDigitsPerPlane = new TObjArray(fNPlanes);
870 for (Int_t iPlane=0; iPlane<fNPlanes; iPlane++) fSDigitsPerPlane->AddAt(new TClonesArray("AliMFTDigit"), iPlane);
872 fSideDigits = new TClonesArray("AliMFTDigit");
876 //====================================================================================================================================================
878 void AliMFT::CreateDigits() {
880 // create digits list
882 AliDebug(1, "AliMFT::CreateDigits()");
884 if (fDigitsPerPlane) return;
885 fDigitsPerPlane = new TObjArray(fNPlanes);
886 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) fDigitsPerPlane->AddAt(new TClonesArray("AliMFTDigit"), iPlane);
890 //====================================================================================================================================================
892 void AliMFT::CreateRecPoints() {
894 // create recPoints list
896 AliDebug(1, "AliMFT::CreateRecPoints()");
898 if (fRecPointsPerPlane) return;
899 fRecPointsPerPlane = new TObjArray(fNPlanes);
900 for(Int_t iPlane=0; iPlane<fNPlanes; iPlane++) fRecPointsPerPlane->AddAt(new TClonesArray("AliMFTCluster"), iPlane);
904 //====================================================================================================================================================