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4 * Author: The ALICE Off-line Project. *
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17 @author Christian Holm Christensen <cholm@nbi.dk>
18 @date Sun Mar 26 17:59:18 2006
19 @brief Implementation of AliFMD base class
21 //____________________________________________________________________
23 // Forward Multiplicity Detector based on Silicon wafers. This class
24 // is the driver for especially simulation.
26 // The Forward Multiplicity Detector consists of 3 sub-detectors FMD1,
27 // FMD2, and FMD3, each of which has 1 or 2 rings of silicon sensors.
29 // This is the base class for all FMD manager classes.
31 // The actual code is done by various separate classes. Below is
32 // diagram showing the relationship between the various FMD classes
33 // that handles the simulation
36 // +----------+ +----------+
37 // | AliFMDv1 | | AliFMDv0 |
38 // +----------+ +----------+
39 // | | +-----------------+
40 // +----+--------------+ +--| AliFMDDigitizer |
41 // | | +-----------------+
42 // | +---------------------+ |
43 // | +--| AliFMDBaseDigitizer |<--+
44 // V 1 | +---------------------+ |
45 // +--------+<>--+ | +------------------+
46 // | AliFMD | +--| AliFMDSDigitizer |
47 // +--------+<>--+ +------------------+
48 // 1 | +---------------------+
49 // +--| AliFMDReconstructor |
50 // +---------------------+
53 // This defines the interface for the various parts of AliROOT that
54 // uses the FMD, like AliFMDSimulator, AliFMDDigitizer,
55 // AliFMDReconstructor, and so on.
58 // This is a concrete implementation of the AliFMD interface.
59 // It is the responsibility of this class to create the FMD
63 // This is a concrete implementation of the AliFMD interface.
64 // It is the responsibility of this class to create the FMD
65 // geometry, process hits in the FMD, and serve hits and digits to
66 // the various clients.
69 // This is the base class for the FMD simulation tasks. The
70 // simulator tasks are responsible to implment the geoemtry, and
73 // * AliFMDReconstructor
74 // This is a concrete implementation of the AliReconstructor that
75 // reconstructs pseudo-inclusive-multiplicities from digits (raw or
78 // Calibration and geometry parameters are managed by separate
79 // singleton managers. These are AliFMDGeometry and
80 // AliFMDParameters. Please refer to these classes for more
81 // information on these.
84 // These files are not in the same directory, so there's no reason to
85 // ask the preprocessor to search in the current directory for these
86 // files by including them with `#include "..."'
87 #include <cmath> // __CMATH__
88 #include <TClonesArray.h> // ROOT_TClonesArray
89 #include <TGeometry.h> // ROOT_TGeomtry
90 #include <TNode.h> // ROOT_TNode
91 #include <TXTRU.h> // ROOT_TXTRU
92 #include <TRotMatrix.h> // ROOT_TRotMatrix
93 #include <TTUBE.h> // ROOT_TTUBE
94 #include <TTree.h> // ROOT_TTree
95 #include <TBrowser.h> // ROOT_TBrowser
96 #include <TVirtualMC.h> // ROOT_TVirtualMC
97 #include <TVector2.h> // ROOT_TVector2
98 #include <TGeoManager.h> // ROOT_TGeoManager
100 #include <AliRunDigitizer.h> // ALIRUNDIGITIZER_H
101 #include <AliLoader.h> // ALILOADER_H
102 #include <AliRun.h> // ALIRUN_H
103 #include <AliMC.h> // ALIMC_H
104 #include <AliMagF.h> // ALIMAGF_H
105 // #include <AliLog.h> // ALILOG_H
106 #include "AliFMDDebug.h" // Better debug macros
107 #include "AliFMD.h" // ALIFMD_H
108 #include "AliFMDDigit.h" // ALIFMDDIGIT_H
109 #include "AliFMDSDigit.h" // ALIFMDSDIGIT_H
110 #include "AliFMDHit.h" // ALIFMDHIT_H
111 #include "AliFMDGeometry.h" // ALIFMDGEOMETRY_H
112 #include "AliFMDDetector.h" // ALIFMDDETECTOR_H
113 #include "AliFMDRing.h" // ALIFMDRING_H
114 #include "AliFMDDigitizer.h" // ALIFMDDIGITIZER_H
115 #include "AliFMDSDigitizer.h" // ALIFMDSDIGITIZER_H
116 // #include "AliFMDGeometryBuilder.h"
117 #include "AliFMDRawWriter.h" // ALIFMDRAWWRITER_H
118 #include "AliFMDPoints.h" // ALIFMDPOINTS_H
120 //____________________________________________________________________
123 ; // This is to keep Emacs from indenting the next line
126 //____________________________________________________________________
137 // Default constructor for class AliFMD
139 AliFMDDebug(10, ("\tDefault CTOR"));
143 fBad = new TClonesArray("AliFMDHit");
146 //____________________________________________________________________
147 AliFMD::AliFMD(const char *name, const char *title)
148 : AliDetector (name, title),
153 fUseAssembly(kFALSE),
157 // Standard constructor for Forward Multiplicity Detector
159 AliFMDDebug(10, ("\tStandard CTOR"));
160 fBad = new TClonesArray("AliFMDHit");
162 // Initialise Hit array
164 gAlice->GetMCApp()->AddHitList(fHits);
166 // (S)Digits for the detectors disk
170 // CHC: What is this?
172 //PH SetMarkerColor(kRed);
173 //PH SetLineColor(kYellow);
176 //____________________________________________________________________
179 // Destructor for base class AliFMD
203 //====================================================================
205 // GEometry ANd Traking
207 //____________________________________________________________________
209 AliFMD::CreateGeometry()
212 // Create the geometry of Forward Multiplicity Detector. The actual
213 // construction of the geometry is delegated to the class
214 // AliFMDGeometryBuilder, invoked by the singleton manager
217 AliFMDGeometry* fmd = AliFMDGeometry::Instance();
218 fmd->SetDetailed(fDetailed);
219 fmd->UseAssembly(fUseAssembly);
223 //____________________________________________________________________
224 void AliFMD::CreateMaterials()
226 // Define the materials and tracking mediums needed by the FMD
227 // simulation. These mediums are made by sending the messages
228 // AliMaterial, AliMixture, and AliMedium to the passed AliModule
229 // object module. The defined mediums are
231 // FMD Si$ Silicon (active medium in sensors)
232 // FMD C$ Carbon fibre (support cone for FMD3 and vacuum pipe)
233 // FMD Al$ Aluminium (honeycomb support plates)
234 // FMD PCB$ Printed Circuit Board (FEE board with VA1_3)
235 // FMD Chip$ Electronics chips (currently not used)
236 // FMD Air$ Air (Air in the FMD)
237 // FMD Plastic$ Plastic (Support legs for the hybrid cards)
239 // The geometry builder should really be the one that creates the
240 // materials, but the architecture of AliROOT makes that design
241 // akward. What should happen, was that the AliFMDGeometryBuilder
242 // made the mediums, and that this class retrives pointers from the
243 // TGeoManager, and registers the mediums here. Alas, it's not
246 AliFMDDebug(10, ("\tCreating materials"));
247 // Get pointer to geometry singleton object.
248 AliFMDGeometry* geometry = AliFMDGeometry::Instance();
251 if (gGeoManager && gGeoManager->GetMedium("FMD Si$")) {
252 // We need to figure out the some stuff about the geometry
253 fmd->ExtractGeomInfo();
260 Double_t density = 0;
261 Double_t radiationLength = 0;
262 Double_t absorbtionLength = 999;
263 Int_t fieldType = gAlice->Field()->Integ(); // Field type
264 Double_t maxField = gAlice->Field()->Max(); // Field max.
265 Double_t maxBending = 0; // Max Angle
266 Double_t maxStepSize = 0.001; // Max step size
267 Double_t maxEnergyLoss = 1; // Max Delta E
268 Double_t precision = 0.001; // Precision
269 Double_t minStepSize = 0.001; // Minimum step size
274 density = geometry->GetSiDensity();
275 radiationLength = 9.36;
281 AliMaterial(id, "Si$", a, z, density, radiationLength, absorbtionLength);
282 AliMedium(kSiId, "Si$", id,1,fieldType,maxField,maxBending,
283 maxStepSize,maxEnergyLoss,precision,minStepSize);
290 radiationLength = 18.8;
296 AliMaterial(id, "Carbon$", a, z, density, radiationLength, absorbtionLength);
297 AliMedium(kCarbonId, "Carbon$", id,0,fieldType,maxField,maxBending,
298 maxStepSize,maxEnergyLoss,precision,minStepSize);
304 radiationLength = 8.9;
306 AliMaterial(id, "Aluminum$",a,z, density, radiationLength, absorbtionLength);
307 AliMedium(kAlId, "Aluminum$", id, 0, fieldType, maxField, maxBending,
308 maxStepSize, maxEnergyLoss, precision, minStepSize);
315 radiationLength = 1.43;
317 AliMaterial(id, "Copper$",
318 a, z, density, radiationLength, absorbtionLength);
319 AliMedium(kCopperId, "Copper$", id, 0, fieldType, maxField, maxBending,
320 maxStepSize, maxEnergyLoss, precision, minStepSize);
325 Float_t as[] = { 12.0107, 14.0067, 15.9994,
326 1.00794, 28.0855, 107.8682 };
327 Float_t zs[] = { 6., 7., 8.,
329 Float_t ws[] = { 0.039730642, 0.001396798, 0.01169634,
330 0.004367771, 0.844665, 0.09814344903 };
337 AliMixture(id, "Si Chip$", as, zs, density, 6, ws);
338 AliMedium(kSiChipId, "Si Chip$", id, 0, fieldType, maxField, maxBending,
339 maxStepSize, maxEnergyLoss, precision, minStepSize);
344 Float_t as[] = { 1.00794, 12.0107, 14.010, 15.9994};
345 Float_t zs[] = { 1., 6., 7., 8.};
346 Float_t ws[] = { 0.026362, 0.69113, 0.07327, 0.209235};
353 AliMixture(id, "Kaption$", as, zs, density, 4, ws);
354 AliMedium(kKaptonId, "Kaption$", id,0,fieldType,maxField,maxBending,
355 maxStepSize,maxEnergyLoss,precision,minStepSize);
360 Float_t as[] = { 12.0107, 14.0067, 15.9994, 39.948 };
361 Float_t zs[] = { 6., 7., 8., 18. };
362 Float_t ws[] = { 0.000124, 0.755267, 0.231781, 0.012827 };
369 AliMixture(id, "Air$", as, zs, density, 4, ws);
370 AliMedium(kAirId, "Air$", id,0,fieldType,maxField,maxBending,
371 maxStepSize,maxEnergyLoss,precision,minStepSize);
376 Float_t zs[] = { 14., 20., 13., 12.,
380 Float_t as[] = { 28.0855, 40.078, 26.981538, 24.305,
381 10.811, 47.867, 22.98977, 39.0983,
382 55.845, 18.9984, 15.9994, 12.0107,
384 Float_t ws[] = { 0.15144894, 0.08147477, 0.04128158, 0.00904554,
385 0.01397570, 0.00287685, 0.00445114, 0.00498089,
386 0.00209828, 0.00420000, 0.36043788, 0.27529426,
387 0.01415852, 0.03427566};
394 AliMixture(id, "PCB$", as, zs, density, 14, ws);
395 AliMedium(kPcbId, "PCB$", id,0,fieldType,maxField,maxBending,
396 maxStepSize,maxEnergyLoss,precision,minStepSize);
401 Float_t as[] = { 1.01, 12.01 };
402 Float_t zs[] = { 1., 6. };
403 Float_t ws[] = { 1., 1. };
410 AliMixture(id, "Plastic$", as, zs, density, -2, ws);
411 AliMedium(kPlasticId, "Plastic$", id,0,fieldType,maxField,maxBending,
412 maxStepSize,maxEnergyLoss,precision,minStepSize);
416 //____________________________________________________________________
420 // Initialize the detector
422 AliFMDDebug(1, ("Initialising FMD detector object"));
423 TVirtualMC* mc = TVirtualMC::GetMC();
424 AliFMDGeometry* fmd = AliFMDGeometry::Instance();
425 const TArrayI& actGeo = fmd->ActiveIds();
426 TArrayI actVmc(actGeo.fN);
427 for (Int_t i = 0; i < actGeo.fN; i++) {
428 TGeoVolume *sens = gGeoManager->GetVolume(actGeo[i]);
430 AliError(Form("No TGeo volume for sensitive volume ID=%d",actGeo[i]));
433 actVmc[i] = mc->VolId(sens->GetName());
434 AliFMDDebug(1, ("Active vol id # %d: %d changed to %d",
435 i, actGeo[i], actVmc[i]));
437 fmd->SetActive(actVmc.fArray, actVmc.fN);
438 // fmd->InitTransformations();
441 //____________________________________________________________________
443 AliFMD::FinishEvent()
445 // Called at the end of the an event in simulations. If the debug
446 // level is high enough, then the `bad' hits are printed.
448 if (AliLog::GetDebugLevel("FMD", "AliFMD") < 10) return;
449 if (fBad && fBad->GetEntries() > 0) {
450 AliWarning((Form("EndEvent", "got %d 'bad' hits", fBad->GetEntries())));
453 while ((hit = static_cast<AliFMDHit*>(next()))) hit->Print("D");
459 //====================================================================
461 // Graphics and event display
463 //____________________________________________________________________
465 AliFMD::BuildGeometry()
468 // Build simple ROOT TNode geometry for event display. With the new
469 // geometry modeller, TGeoManager, this seems rather redundant.
470 AliFMDDebug(10, ("\tCreating a simplified geometry"));
472 AliFMDGeometry* fmd = AliFMDGeometry::Instance();
474 static TXTRU* innerShape = 0;
475 static TXTRU* outerShape = 0;
476 static TObjArray* innerRot = 0;
477 static TObjArray* outerRot = 0;
479 if (!innerShape || !outerShape) {
480 // Make the shapes for the modules
481 for (Int_t i = 0; i < 2; i++) {
484 case 0: r = fmd->GetRing('I'); break;
485 case 1: r = fmd->GetRing('O'); break;
488 AliError(Form("no ring found for i=%d", i));
491 Double_t siThick = r->GetSiThickness();
492 const Int_t knv = r->GetNVerticies();
493 Double_t theta = r->GetTheta();
494 Int_t nmod = r->GetNModules();
496 TXTRU* shape = new TXTRU(r->GetName(), r->GetTitle(), "void", knv, 2);
497 for (Int_t j = 0; j < knv; j++) {
498 TVector2* vv = r->GetVertex(knv - 1 - j);
499 shape->DefineVertex(j, vv->X(), vv->Y());
501 shape->DefineSection(0, -siThick / 2, 1, 0, 0);
502 shape->DefineSection(1, +siThick / 2, 1, 0, 0);
503 shape->SetLineColor(kYellow); //PH kYellow is the default line color in FMD
505 TObjArray* rots = new TObjArray(nmod);
506 for (Int_t j = 0; j < nmod; j++) {
507 Double_t th = (j + .5) * theta * 2;
508 TString name(Form("FMD_ring_%c_rot_%02d", r->GetId(), j));
509 TString title(Form("FMD Ring %c Rotation # %d", r->GetId(), j));
510 TRotMatrix* rot = new TRotMatrix(name.Data(), title.Data(),
511 90, th, 90, fmod(90+th,360), 0, 0);
515 switch (r->GetId()) {
517 case 'I': innerShape = shape; innerRot = rots; break;
519 case 'O': outerShape = shape; outerRot = rots; break;
524 TNode* top = gAlice->GetGeometry()->GetNode("alice");
526 for (Int_t i = 1; i <= 3; i++) {
527 AliFMDDetector* det = fmd->GetDetector(i);
529 Warning("BuildGeometry", "FMD%d seems to be disabled", i);
533 Double_t rh = det->GetRing('I')->GetHighR();
535 if (det->GetRing('O')) {
536 w = TMath::Abs(det->GetRingZ('O') - det->GetRingZ('I'));
537 id = (TMath::Abs(det->GetRingZ('O'))
538 > TMath::Abs(det->GetRingZ('I')) ? 'O' : 'I');
539 rh = det->GetRing('O')->GetHighR();
541 w += (det->GetRing(id)->GetModuleSpacing() +
542 det->GetRing(id)->GetSiThickness());
543 TShape* shape = new TTUBE(det->GetName(), det->GetTitle(), "void",
544 det->GetRing('I')->GetLowR(), rh, w / 2);
545 Double_t z = (det->GetRingZ('I') - w / 2);
546 if (z > 0) z += det->GetRing(id)->GetModuleSpacing();
548 TNode* node = new TNode(det->GetName(), det->GetTitle(), shape,
552 for (Int_t j = 0; j < 2; j++) {
558 r = det->GetRing('I'); rshape = innerShape; rots = innerRot; break;
560 r = det->GetRing('O'); rshape = outerShape; rots = outerRot; break;
564 Double_t siThick = r->GetSiThickness();
565 Int_t nmod = r->GetNModules();
566 Double_t modspace = r->GetModuleSpacing();
567 Double_t rz = - (z - det->GetRingZ(r->GetId()));
569 for (Int_t k = 0; k < nmod; k++) {
571 Double_t offz = (k % 2 == 1 ? modspace : 0);
572 TRotMatrix* rot = static_cast<TRotMatrix*>(rots->At(k));
573 TString name(Form("%s%c_module_%02d", det->GetName(), r->GetId(),k));
574 TString title(Form("%s%c Module %d", det->GetName(), r->GetId(),k));
575 TNode* mnod = new TNode(name.Data(), title.Data(), rshape,
576 0, 0, rz - siThick / 2
577 + TMath::Sign(offz,z), rot);
578 mnod->SetLineColor(kYellow); //PH kYellow is the default line color in FMD
580 } // for (Int_t k = 0 ; ...)
581 } // for (Int_t j = 0 ; ...)
582 } // for (Int_t i = 1 ; ...)
585 //____________________________________________________________________
587 AliFMD::LoadPoints(Int_t /* track */)
589 // Store x, y, z of all hits in memory for display.
591 // Normally, the hits are drawn using TPolyMarker3D - however, that
592 // is not very useful for the FMD. Therefor, this member function
593 // is overloaded to make TMarker3D, via the class AliFMDPoints.
594 // AliFMDPoints is a local class.
597 AliError(Form("fHits == 0. Name is %s",GetName()));
600 Int_t nHits = fHits->GetEntriesFast();
604 Int_t tracks = gAlice->GetMCApp()->GetNtrack();
605 if (fPoints == 0) fPoints = new TObjArray(2 * tracks);
608 AliFMDGeometry* geom = AliFMDGeometry::Instance();
610 geom->InitTransformations();
612 // Now make markers for each hit
613 // AliInfo(Form("Drawing %d hits (have %d points) for track %d",
614 // nHits, fPoints->GetEntriesFast(), track));
615 for (Int_t ihit = 0; ihit < nHits; ihit++) {
616 AliFMDHit* hit = static_cast<AliFMDHit*>(fHits->At(ihit));
618 Double_t edep = hit->Edep();
619 Double_t m = hit->M();
620 Double_t poverm = (m == 0 ? 0 : hit->P());
621 Double_t absQ = TMath::Abs(hit->Q());
623 // This `if' is to debug abnormal energy depositions. We trigger on
624 // p/m approx larger than or equal to a MIP, and a large edep - more
625 // than 1 keV - a MIP is 100 eV.
626 if (edep > absQ * absQ && poverm > 1) bad = kTRUE;
628 AliFMDPoints* p1 = new AliFMDPoints(hit, kRed); //PH kRed is the default marker color in FMD
629 // AliPoints* p1 = new AliPoints();
630 // p1->SetMarkerColor(GetMarkerColor());
631 // p1->SetMarkerSize(GetMarkerSize());
632 // p1->SetPoint(0, hit->X(), hit->Y(), hit->Z());
633 p1->SetDetector(this);
634 p1->SetParticle(hit->GetTrack());
635 fPoints->AddAt(p1, hit->GetTrack());
637 p1->SetMarkerColor(4);
638 // p1->SetMarkerSize(2 * GetMarkerSize());
642 geom->Detector2XYZ(hit->Detector(), hit->Ring(), hit->Sector(),
643 hit->Strip(), x, y, z);
644 AliFMDPoints* p = new AliFMDPoints(hit, 3);
645 // AliPoints* p = new AliPoints();
646 // p->SetMarkerColor(3);
647 // p->SetMarkerSize(GetMarkerSize());
648 // p->SetPoint(0, x, y, z);
649 p->SetDetector(this);
650 p->SetParticle(hit->GetTrack());
652 p->SetMarkerColor(3);
653 fPoints->AddAt(p, tracks+hit->GetTrack());
655 p->SetMarkerColor(5);
656 // p->SetMarkerSize(2 * GetMarkerSize());
658 // AliInfo(Form("Adding point at %d", tracks+hit->GetTrack()));
662 //____________________________________________________________________
664 AliFMD::DrawDetector()
666 // Draw a shaded view of the Forward multiplicity detector. This
667 // isn't really useful anymore.
668 AliFMDDebug(10, ("\tDraw detector"));
671 //____________________________________________________________________
673 AliFMD::DistancetoPrimitive(Int_t, Int_t)
675 // Calculate the distance from the mouse to the FMD on the screen
681 //====================================================================
683 // Hit and Digit managment
685 //____________________________________________________________________
687 AliFMD::MakeBranch(Option_t * option)
689 // Create Tree branches for the FMD.
693 // H Make a branch of TClonesArray of AliFMDHit's
694 // D Make a branch of TClonesArray of AliFMDDigit's
695 // S Make a branch of TClonesArray of AliFMDSDigit's
697 const Int_t kBufferSize = 16000;
698 TString branchname(GetName());
701 if (opt.Contains("H", TString::kIgnoreCase)) {
703 AliDetector::MakeBranch(option);
705 if (opt.Contains("D", TString::kIgnoreCase)) {
707 MakeBranchInTree(fLoader->TreeD(), branchname.Data(),
708 &fDigits, kBufferSize, 0);
710 if (opt.Contains("S", TString::kIgnoreCase)) {
712 MakeBranchInTree(fLoader->TreeS(), branchname.Data(),
713 &fSDigits, kBufferSize, 0);
717 //____________________________________________________________________
719 AliFMD::SetTreeAddress()
721 // Set branch address for the Hits, Digits, and SDigits Tree.
722 if (fLoader->TreeH()) HitsArray();
723 AliDetector::SetTreeAddress();
725 TTree *treeD = fLoader->TreeD();
728 TBranch* branch = treeD->GetBranch ("FMD");
729 if (branch) branch->SetAddress(&fDigits);
732 TTree *treeS = fLoader->TreeS();
735 TBranch* branch = treeS->GetBranch ("FMD");
736 if (branch) branch->SetAddress(&fSDigits);
740 //____________________________________________________________________
742 AliFMD::SetHitsAddressBranch(TBranch *b)
744 // Set the TClonesArray to read hits into.
745 b->SetAddress(&fHits);
748 //____________________________________________________________________
750 AliFMD::AddHit(Int_t track, Int_t *vol, Float_t *hits)
752 // Add a hit to the hits tree
754 // The information of the two arrays are decoded as
758 // ivol[0] [UShort_t ] Detector #
759 // ivol[1] [Char_t ] Ring ID
760 // ivol[2] [UShort_t ] Sector #
761 // ivol[3] [UShort_t ] Strip #
762 // hits[0] [Float_t ] Track's X-coordinate at hit
763 // hits[1] [Float_t ] Track's Y-coordinate at hit
764 // hits[3] [Float_t ] Track's Z-coordinate at hit
765 // hits[4] [Float_t ] X-component of track's momentum
766 // hits[5] [Float_t ] Y-component of track's momentum
767 // hits[6] [Float_t ] Z-component of track's momentum
768 // hits[7] [Float_t ] Energy deposited by track
769 // hits[8] [Int_t ] Track's particle Id #
770 // hits[9] [Float_t ] Time when the track hit
773 AddHitByFields(track,
774 UShort_t(vol[0]), // Detector #
775 Char_t(vol[1]), // Ring ID
776 UShort_t(vol[2]), // Sector #
777 UShort_t(vol[3]), // Strip #
784 hits[6], // Energy loss
785 Int_t(hits[7]), // PDG
789 //____________________________________________________________________
791 AliFMD::AddHitByFields(Int_t track,
808 // Add a hit to the list
813 // detector Detector # (1, 2, or 3)
814 // ring Ring ID ('I' or 'O')
815 // sector Sector # (For inner/outer rings: 0-19/0-39)
816 // strip Strip # (For inner/outer rings: 0-511/0-255)
817 // x Track's X-coordinate at hit
818 // y Track's Y-coordinate at hit
819 // z Track's Z-coordinate at hit
820 // px X-component of track's momentum
821 // py Y-component of track's momentum
822 // pz Z-component of track's momentum
823 // edep Energy deposited by track
824 // pdg Track's particle Id #
825 // t Time when the track hit
826 // l Track length through the material.
827 // stop Whether track was stopped or disappeared
829 TClonesArray& a = *(HitsArray());
830 // Search through the list of already registered hits, and see if we
831 // find a hit with the same parameters. If we do, then don't create
832 // a new hit, but rather update the energy deposited in the hit.
833 // This is done, so that a FLUKA based simulation will get the
834 // number of hits right, not just the enerrgy deposition.
836 for (Int_t i = 0; i < fNhits; i++) {
837 if (!a.At(i)) continue;
838 hit = static_cast<AliFMDHit*>(a.At(i));
839 if (hit->Detector() == detector
840 && hit->Ring() == ring
841 && hit->Sector() == sector
842 && hit->Strip() == strip
843 && hit->Track() == track) {
844 AliFMDDebug(1, ("already had a hit in FMD%d%c[%2d,%3d] for track # %d,"
845 " adding energy (%f) to that hit (%f) -> %f",
846 detector, ring, sector, strip, track, edep, hit->Edep(),
847 hit->Edep() + edep));
848 hit->SetEdep(hit->Edep() + edep);
852 // If hit wasn't already registered, do so know.
853 hit = new (a[fNhits]) AliFMDHit(fIshunt, track, detector, ring, sector,
854 strip, x, y, z, px, py, pz, edep, pdg, t,
860 //____________________________________________________________________
862 AliFMD::AddDigit(Int_t* digits, Int_t*)
864 // Add a digit to the Digit tree
868 // digits[0] [UShort_t] Detector #
869 // digits[1] [Char_t] Ring ID
870 // digits[2] [UShort_t] Sector #
871 // digits[3] [UShort_t] Strip #
872 // digits[4] [UShort_t] ADC Count
873 // digits[5] [Short_t] ADC Count, -1 if not used
874 // digits[6] [Short_t] ADC Count, -1 if not used
876 AddDigitByFields(UShort_t(digits[0]), // Detector #
877 Char_t(digits[1]), // Ring ID
878 UShort_t(digits[2]), // Sector #
879 UShort_t(digits[3]), // Strip #
880 UShort_t(digits[4]), // ADC Count1
881 Short_t(digits[5]), // ADC Count2
882 Short_t(digits[6]), // ADC Count3
886 //____________________________________________________________________
888 AliFMD::AddDigitByFields(UShort_t detector,
897 // add a real digit - as coming from data
901 // detector Detector # (1, 2, or 3)
902 // ring Ring ID ('I' or 'O')
903 // sector Sector # (For inner/outer rings: 0-19/0-39)
904 // strip Strip # (For inner/outer rings: 0-511/0-255)
905 // count1 ADC count (a 10-bit word)
906 // count2 ADC count (a 10-bit word), or -1 if not used
907 // count3 ADC count (a 10-bit word), or -1 if not used
908 TClonesArray& a = *(DigitsArray());
911 AliFMDDigit(detector, ring, sector, strip, count1, count2, count3, count4);
912 AliFMDDebug(15, ("Adding digit # %5d/%5d for FMD%d%c[%2d,%3d]=(%d,%d,%d,%d)",
913 fNdigits-1, a.GetEntriesFast(),
914 detector, ring, sector, strip,
915 count1, count2, count3, count4));
919 //____________________________________________________________________
921 AliFMD::AddSDigit(Int_t* digits)
923 // Add a digit to the SDigit tree
927 // digits[0] [UShort_t] Detector #
928 // digits[1] [Char_t] Ring ID
929 // digits[2] [UShort_t] Sector #
930 // digits[3] [UShort_t] Strip #
931 // digits[4] [Float_t] Total energy deposited
932 // digits[5] [UShort_t] ADC Count
933 // digits[6] [Short_t] ADC Count, -1 if not used
934 // digits[7] [Short_t] ADC Count, -1 if not used
936 AddSDigitByFields(UShort_t(digits[0]), // Detector #
937 Char_t(digits[1]), // Ring ID
938 UShort_t(digits[2]), // Sector #
939 UShort_t(digits[3]), // Strip #
940 Float_t(digits[4]), // Edep
941 UShort_t(digits[5]), // ADC Count1
942 Short_t(digits[6]), // ADC Count2
943 Short_t(digits[7]), // ADC Count3
947 //____________________________________________________________________
949 AliFMD::AddSDigitByFields(UShort_t detector,
959 // add a summable digit
963 // detector Detector # (1, 2, or 3)
964 // ring Ring ID ('I' or 'O')
965 // sector Sector # (For inner/outer rings: 0-19/0-39)
966 // strip Strip # (For inner/outer rings: 0-511/0-255)
967 // edep Total energy deposited
968 // count1 ADC count (a 10-bit word)
969 // count2 ADC count (a 10-bit word), or -1 if not used
970 // count3 ADC count (a 10-bit word), or -1 if not used
972 TClonesArray& a = *(SDigitsArray());
975 AliFMDSDigit(detector, ring, sector, strip, edep,
976 count1, count2, count3, count4);
979 //____________________________________________________________________
981 AliFMD::ResetSDigits()
983 // Reset number of digits and the digits array for this detector.
986 if (fSDigits) fSDigits->Clear();
990 //____________________________________________________________________
994 // Initialize hit array if not already, and return pointer to it.
996 fHits = new TClonesArray("AliFMDHit", 1000);
1002 //____________________________________________________________________
1004 AliFMD::DigitsArray()
1006 // Initialize digit array if not already, and return pointer to it.
1008 fDigits = new TClonesArray("AliFMDDigit", 1000);
1014 //____________________________________________________________________
1016 AliFMD::SDigitsArray()
1018 // Initialize digit array if not already, and return pointer to it.
1020 fSDigits = new TClonesArray("AliFMDSDigit", 1000);
1026 //====================================================================
1030 //____________________________________________________________________
1032 AliFMD::Hits2Digits()
1034 // Create AliFMDDigit's from AliFMDHit's. This is done by making a
1035 // AliFMDDigitizer, and executing that code.
1037 Warning("Hits2Digits", "Try not to use this method.\n"
1038 "Instead, use AliSimulator");
1039 AliRunDigitizer* manager = new AliRunDigitizer(1, 1);
1040 manager->SetInputStream(0, "galice.root");
1041 manager->SetOutputFile("H2Dfile");
1043 /* AliDigitizer* dig =*/ CreateDigitizer(manager);
1048 //____________________________________________________________________
1050 AliFMD::Hits2SDigits()
1052 // Create AliFMDSDigit's from AliFMDHit's. This is done by creating
1053 // an AliFMDSDigitizer object, and executing it.
1055 AliFMDSDigitizer* digitizer = new AliFMDSDigitizer("galice.root");
1056 digitizer->Exec("");
1061 //____________________________________________________________________
1063 AliFMD::CreateDigitizer(AliRunDigitizer* manager) const
1065 // Create a digitizer object
1066 AliFMDDigitizer* digitizer = new AliFMDDigitizer(manager);
1070 //====================================================================
1072 // Raw data simulation
1074 //__________________________________________________________________
1076 AliFMD::Digits2Raw()
1078 // Turn digits into raw data.
1080 // This uses the class AliFMDRawWriter to do the job. Please refer
1081 // to that class for more information.
1082 AliFMDRawWriter writer(this);
1087 //====================================================================
1091 //__________________________________________________________________
1093 AliFMD::Browse(TBrowser* b)
1095 // Browse this object.
1097 AliFMDDebug(30, ("\tBrowsing the FMD"));
1098 AliDetector::Browse(b);
1099 b->Add(AliFMDGeometry::Instance());
1102 //____________________________________________________________________
1104 AliFMD::AddAlignableVolumes() const
1107 // Create entries for alignable volumes associating the symbolic volume
1108 // name with the corresponding volume path. Needs to be syncronized with
1109 // eventual changes in the geometry.
1111 // This code was made by Raffaele Grosso <rgrosso@mail.cern.ch>. I
1112 // (cholm) will probably want to change it. For one, I think it
1113 // should be the job of the geometry manager to deal with this.
1114 AliFMDGeometry::Instance()->SetAlignableVolumes();
1116 for(size_t f = 1; f <= 3; f++){ // Detector 1,2,3
1117 for(size_t tb = 0; tb <2 ; tb++){ // Top/Bottom
1118 char stb = tb == 0 ? 'T' : 'B';
1119 unsigned min = tb == 0 ? 0 : 5;
1121 TString halfVol(Form("/ALIC_1/F%dM%c_%d", f, stb, f));
1122 TString halfSym(halfVol);
1123 if(!gGeoManager->SetAlignableEntry(halfSym.Data(),halfVol.Data()))
1124 AliFatal(Form("Alignable entry %s not created. "
1125 "Volume path %s not valid",
1126 halfSym.Data(),halfVol.Data()));
1127 for(size_t io = 0; io < 2; io++){ // inner, outer
1128 if (f==1 && io==1) continue; // Only one ring in FMD1
1129 if(tb == 1 && io==1) min=10;
1130 char sio = (io == 0 ? 'I' : 'O');
1131 unsigned nio = (io == 0 ? 3 : 9);
1132 unsigned max = (io == 0 ? 5 : 10) + min;
1134 for(size_t i = min; i < max; i++) { // Modules
1135 TString modVol(Form("%s/F%c%cV_7%d/F%cSE_%d", halfVol.Data(),
1136 sio, stb, nio, sio, i));
1137 TString modSym(modVol);
1138 if(!gGeoManager->SetAlignableEntry(modSym.Data(),modVol.Data()))
1139 AliFatal(Form("Alignable entry %s not created. "
1140 "Volume path %s not valid",
1141 modSym.Data(), modVol.Data()));
1148 //___________________________________________________________________