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 **************************************************************************/
15 //////////////////////////////////////////////////////////////////////////////
17 // Forward Multiplicity Detector based on Silicon plates //
18 // This class contains the base procedures for the Forward Multiplicity //
20 // Detector consists of 6 Si volumes covered pseudorapidity interval //
21 // from 1.6 to 6.0. //
25 <img src="gif/AliFMDClass.gif">
28 <font size=+2 color=red>
29 <p>The responsible person for this module is
30 <a href="mailto:Alla.Maevskaia@cern.ch">Alla Maevskaia</a>.
37 ///////////////////////////////////////////////////////////////////////////////
41 #include <TGeometry.h>
47 #include <TClonesArray.h>
48 #include <TLorentzVector.h>
51 #include "AliDetector.h"
52 #include <Riostream.h>
54 #include "AliFMDhit.h"
55 #include "AliFMDdigit.h"
56 #include "AliFMDReconstruction.h"
57 #include "AliFMDReconstParticles.h"
62 //_____________________________________________________________________________
63 AliFMD::AliFMD ():AliDetector ()
66 // Default constructor for class AliFMD
75 //_____________________________________________________________________________
76 AliFMD::AliFMD (const char *name, const char *title):
77 AliDetector (name, title)
80 // Standard constructor for Forward Multiplicity Detector
84 // Initialise Hit array
85 fHits = new TClonesArray ("AliFMDhit", 1000);
86 // Digits for each Si disk
87 fDigits = new TClonesArray ("AliFMDdigit", 1000);
88 fSDigits = new TClonesArray ("AliFMDdigit", 1000);
89 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
90 gAlice->AddHitList (fHits);
99 SetMarkerColor (kRed);
102 //-----------------------------------------------------------------------------
125 fReconParticles->Delete ();
126 delete fReconParticles;
132 //_____________________________________________________________________________
133 void AliFMD::AddHit (Int_t track, Int_t * vol, Float_t * hits)
136 // Add a hit to the list
138 TClonesArray & lhits = *fHits;
139 new (lhits[fNhits++]) AliFMDhit (fIshunt, track, vol, hits);
142 //_____________________________________________________________________________
143 void AliFMD::AddDigit (Int_t * digits)
145 // add a real digit - as coming from data
148 TClonesArray & ldigits = *fDigits;
149 new (ldigits[fNdigits++]) AliFMDdigit (digits);
152 //_____________________________________________________________________________
153 void AliFMD::AddSDigit (Int_t * digits)
155 // add a real digit - as coming from data
157 TClonesArray & ldigits = *fSDigits;
158 new (ldigits[fNdigits++]) AliFMDdigit (digits);
161 //_____________________________________________________________________________
162 void AliFMD::BuildGeometry ()
165 // Build simple ROOT TNode geometry for event display
168 const int kColorFMD = 5;
170 top = gAlice->GetGeometry ()->GetNode ("alice");
172 // FMD define the different volumes
173 new TRotMatrix ("rot901", "rot901", 90, 0, 90, 90, 180, 0);
175 new TTUBE ("S_FMD0", "FMD volume 0", "void", 4.2, 17.2, 1.5);
177 node = new TNode ("FMD0", "FMD0", "S_FMD0", 0, 0, 62.8, "");
178 node->SetLineColor (kColorFMD);
181 new TTUBE ("S_FMD1", "FMD volume 1", "void", 15.4, 28.4, 1.5);
183 node = new TNode ("FMD1", "FMD1", "S_FMD1", 0, 0, 75.2, "");
184 node->SetLineColor (kColorFMD);
187 new TTUBE ("S_FMD2", "FMD volume 2", "void", 4.2, 17.2, 1.5);
189 node = new TNode ("FMD2", "FMD2", "S_FMD2", 0, 0, -83.2, "");
190 node->SetLineColor (kColorFMD);
193 new TTUBE ("S_FMD3", "FMD volume 3", "void", 15.4, 28.4, 1.5);
195 node = new TNode ("FMD3", "FMD3", "S_FMD3", 0, 0, -75.2, "");
196 node->SetLineColor (kColorFMD);
199 new TTUBE ("S_FMD4", "FMD volume 4", "void", 4.2, 17.2, 1.5);
201 // node = new TNode("FMD4","FMD4","S_FMD4",0,0,-270,"");
202 node = new TNode ("FMD4", "FMD4", "S_FMD4", 0, 0, -340, "");
203 node->SetLineColor (kColorFMD);
207 //_____________________________________________________________________________
208 Int_t AliFMD::DistanceToPrimitive (Int_t px, Int_t py)
211 // Calculate the distance from the mouse to the FMD on the screen
217 //___________________________________________
218 void AliFMD::ResetHits ()
220 // Reset number of clusters and the cluster array for this detector
221 AliDetector::ResetHits ();
224 //____________________________________________
225 void AliFMD::ResetDigits ()
228 // Reset number of digits and the digits array for this detector
229 AliDetector::ResetDigits ();
233 //-------------------------------------------------------------------------
237 // Initialis the FMD after it has been built
242 printf ("\n%s: ", ClassName ());
243 for (i = 0; i < 35; i++)
245 printf (" FMD_INIT ");
246 for (i = 0; i < 35; i++)
248 printf ("\n%s: ", ClassName ());
250 // Here the FMD initialisation code (if any!)
251 for (i = 0; i < 80; i++)
257 fIdSens1 = gMC->VolId ("GRN1"); //Si sensetive volume
258 fIdSens2 = gMC->VolId ("GRN2"); //Si sensetive volume
259 fIdSens3 = gMC->VolId ("GRN3"); //Si sensetive volume
260 fIdSens4 = gMC->VolId ("GRN4"); //Si sensetive volume
263 //---------------------------------------------------------------------
264 void AliFMD::MakeBranch (Option_t * option, const char *file)
266 // Create Tree branches for the FMD.
268 const Int_t kBufferSize = 16000;
269 sprintf (branchname, "%s", GetName ());
271 AliDetector::MakeBranch (option, file);
272 const char *cD = strstr(option,"D");
273 const char *cR = strstr(option,"R");
274 const char *cS = strstr(option,"S");
278 MakeBranchInTree(gAlice->TreeS(),
279 branchname,&fSDigits,
284 MakeBranchInTree(gAlice->TreeD(),
287 cout<<" tree "<<gAlice->TreeD()<<" "<<branchname<<" "<<&fDigits<<endl;
290 MakeBranchInTree(gAlice->TreeR(),
291 branchname,&fReconParticles,
297 //_____________________________________________________________________________
298 void AliFMD::SetTreeAddress ()
300 // Set branch address for the Hits and Digits Tree.
302 AliDetector::SetTreeAddress ();
305 TTree *treeD = gAlice->TreeD ();
312 branch = treeD->GetBranch (branchname);
314 branch->SetAddress (&fDigits);
319 // fSDigits->Clear ();
321 if (gAlice->TreeS () && fSDigits)
323 branch = gAlice->TreeS ()->GetBranch ("FMD");
325 branch->SetAddress (&fSDigits);
328 if (gAlice->TreeR() && fReconParticles)
330 branch = gAlice->TreeR()->GetBranch("FMD");
331 if (branch) branch->SetAddress(&fReconParticles) ;
335 //---------------------------------------------------------------------
337 void AliFMD::SetRingsSi1(Int_t ringsSi1)
339 // fRingsSi1=ringsSi1;
342 void AliFMD::SetSectorsSi1(Int_t sectorsSi1)
346 void AliFMD::SetRingsSi2(Int_t ringsSi2)
350 void AliFMD::SetSectorsSi2(Int_t sectorsSi2)
355 //---------------------------------------------------------------------
357 void AliFMD::SDigits2Digits()
359 cout<<"AliFMD::SDigits2Digits"<<endl;
361 fMerger = new AliFMDMerger();
364 fMerger ->SetRingsSi1(fRingsSi1);
365 fMerger->SetRingsSi2(fRingsSi2);
366 fMerger ->SetSectorsSi1(fSectorsSi1);
367 fMerger ->SetSectorsSi2(fSectorsSi2);
370 cout<<"AliFMD::SDigits2Digits Init"<<endl;
372 cout<<"AliFMD::SDigits2Digits Digitise() "<<endl;
377 //---------------------------------------------------------------------
378 void AliFMD::SetMerger(AliFMDMerger* merger)
380 // Set pointer to merger
384 AliFMDMerger* AliFMD::Merger()
386 // Return pointer to merger
390 //---------------------------------------------------------------------
395 AliFMD::Eta2Radius (Float_t eta, Float_t zDisk, Float_t * radius)
397 Float_t expEta = TMath::Exp (-eta);
398 Float_t theta = TMath::ATan (expEta);
400 Float_t rad = zDisk * (TMath::Tan (theta));
404 printf ("%s: eta %f radius %f\n", ClassName (), eta, rad);
407 //---------------------------------------------------------------------
409 void AliFMD::Hits2SDigits ()
413 cout<<"ALiFMD::Hits2SDigits> start...\n";
416 char * fileSDigits = "FMD.SDigits.root";
417 char * fileHeader = 0;
418 AliFMDSDigitizer * sd = new AliFMDSDigitizer(fileHeader,fileSDigits) ;
419 sd->SetRingsSi1(fRingsSi1);
420 sd->SetRingsSi2(fRingsSi2);
421 sd->SetSectorsSi1(fSectorsSi1);
422 sd->SetSectorsSi2(fSectorsSi2);
423 // sd->SetEventNumber(fEvNrSig);
429 //-----------------------------------------------------------------------
431 void AliFMD::Digits2Reco()
433 char * fileReconParticles=0;
435 AliFMDReconstruction * reconstruction =
436 new AliFMDReconstruction(fileHeader,fileReconParticles) ;
437 // fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
438 reconstruction->Exec("");
439 delete reconstruction;
441 //-----------------------------------------------------------------------
443 void AliFMD::MakeBranchInTreeD(TTree *treeD, const char *file)
446 // Create TreeD branches for the MUON.
449 const Int_t kBufferSize = 4000;
453 sprintf(branchname,"%s",GetName());
455 MakeBranchInTree(treeD,