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 **************************************************************************/
18 //////////////////////////////////////////////////////////////////////////////
20 // Forward Multiplicity Detector based on Silicon plates //
21 // This class contains the base procedures for the Forward Multiplicity //
23 // Detector consists of 6 Si volumes covered pseudorapidity interval //
24 // from 1.6 to 6.0. //
28 <img src="gif/AliFMDClass.gif">
31 <font size=+2 color=red>
32 <p>The responsible person for this module is
33 <a href="mailto:Alla.Maevskaia@cern.ch">Alla Maevskaia</a>.
40 ///////////////////////////////////////////////////////////////////////////////
44 #include <Riostream.h>
47 #include <TClonesArray.h>
49 #include <TGeometry.h>
50 #include <TLorentzVector.h>
55 #include <TVirtualMC.h>
57 #include "AliDetector.h"
58 #include "AliFMDReconstParticles.h"
59 #include "AliFMDReconstruction.h"
60 #include "AliFMDdigit.h"
61 #include "AliFMDhit.h"
63 #include "AliLoader.h"
68 //_____________________________________________________________________________
69 AliFMD::AliFMD ():AliDetector ()
72 // Default constructor for class AliFMD
80 //_____________________________________________________________________________
81 AliFMD::AliFMD (const char *name, const char *title):
82 AliDetector (name, title)
85 // Standard constructor for Forward Multiplicity Detector
89 // Initialise Hit array
90 fHits = new TClonesArray ("AliFMDhit", 1000);
91 // Digits for each Si disk
92 fDigits = new TClonesArray ("AliFMDdigit", 1000);
93 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
94 gAlice->AddHitList (fHits);
98 SetMarkerColor (kRed);
101 //-----------------------------------------------------------------------------
118 fReconParticles->Delete ();
119 delete fReconParticles;
125 //_____________________________________________________________________________
126 void AliFMD::AddHit (Int_t track, Int_t * vol, Float_t * hits)
129 // Add a hit to the list
131 TClonesArray & lhits = *fHits;
132 new (lhits[fNhits++]) AliFMDhit (fIshunt, track, vol, hits);
135 //_____________________________________________________________________________
136 void AliFMD::AddDigit (Int_t * digits)
138 // add a real digit - as coming from data
140 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
141 TClonesArray & ldigits = *fDigits;
142 new (ldigits[fNdigits++]) AliFMDdigit (digits);
145 //_____________________________________________________________________________
146 void AliFMD::BuildGeometry ()
149 // Build simple ROOT TNode geometry for event display
152 const int kColorFMD = 5;
154 top = gAlice->GetGeometry ()->GetNode ("alice");
156 // FMD define the different volumes
157 new TRotMatrix ("rot901", "rot901", 90, 0, 90, 90, 180, 0);
159 new TTUBE ("S_FMD0", "FMD volume 0", "void", 4.2, 17.2, 1.5);
161 node = new TNode ("FMD0", "FMD0", "S_FMD0", 0, 0, 62.8, "");
162 node->SetLineColor (kColorFMD);
165 new TTUBE ("S_FMD1", "FMD volume 1", "void", 15.4, 28.4, 1.5);
167 node = new TNode ("FMD1", "FMD1", "S_FMD1", 0, 0, 75.2, "");
168 node->SetLineColor (kColorFMD);
171 new TTUBE ("S_FMD2", "FMD volume 2", "void", 4.2, 17.2, 1.5);
173 node = new TNode ("FMD2", "FMD2", "S_FMD2", 0, 0, -83.2, "");
174 node->SetLineColor (kColorFMD);
177 new TTUBE ("S_FMD3", "FMD volume 3", "void", 15.4, 28.4, 1.5);
179 node = new TNode ("FMD3", "FMD3", "S_FMD3", 0, 0, -75.2, "");
180 node->SetLineColor (kColorFMD);
183 new TTUBE ("S_FMD4", "FMD volume 4", "void", 4.2, 17.2, 1.5);
185 node = new TNode ("FMD4", "FMD4", "S_FMD4", 0, 0, -340, "");
186 node->SetLineColor (kColorFMD);
190 //_____________________________________________________________________________
191 Int_t AliFMD::DistanceToPrimitive (Int_t /*px*/, Int_t /*py*/)
194 // Calculate the distance from the mouse to the FMD on the screen
200 //___________________________________________
201 void AliFMD::ResetHits ()
203 // Reset number of clusters and the cluster array for this detector
204 AliDetector::ResetHits ();
207 //____________________________________________
208 void AliFMD::ResetDigits ()
211 // Reset number of digits and the digits array for this detector
212 AliDetector::ResetDigits ();
216 //-------------------------------------------------------------------------
220 // Initialis the FMD after it has been built
225 printf ("\n%s: ", ClassName ());
226 for (i = 0; i < 35; i++)
228 printf (" FMD_INIT ");
229 for (i = 0; i < 35; i++)
231 printf ("\n%s: ", ClassName ());
233 // Here the FMD initialisation code (if any!)
234 for (i = 0; i < 80; i++)
242 //---------------------------------------------------------------------
243 void AliFMD::MakeBranch (Option_t * option)
245 // Create Tree branches for the FMD.
247 const Int_t kBufferSize = 16000;
248 sprintf (branchname, "%s", GetName ());
250 const char *cH = strstr(option,"H");
251 const char *cD = strstr(option,"D");
252 const char *cR = strstr(option,"R");
254 if (cH && (fHits == 0x0)) fHits = new TClonesArray ("AliFMDhit", 1000);
256 AliDetector::MakeBranch (option);
259 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
260 MakeBranchInTree(fLoader->TreeD(), branchname,&fDigits, kBufferSize, 0);
264 if (fReconParticles == 0x0)
265 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
266 MakeBranchInTree(fLoader->TreeR(), branchname,&fReconParticles, kBufferSize, 0);
271 //_____________________________________________________________________________
272 void AliFMD::SetTreeAddress ()
274 // Set branch address for the Hits and Digits Tree.
277 if (fLoader->TreeH() && (fHits == 0x0))
278 fHits = new TClonesArray ("AliFMDhit", 1000);
280 AliDetector::SetTreeAddress ();
283 TTree *treeD = fLoader->TreeD();
287 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
288 branch = treeD->GetBranch (branchname);
290 branch->SetAddress (&fDigits);
293 if (fLoader->TreeR() && fReconParticles)
295 if (fReconParticles == 0x0)
296 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
297 branch = fLoader->TreeR()->GetBranch("FMD");
298 if (branch) branch->SetAddress(&fReconParticles) ;
305 AliFMD::Eta2Radius (Float_t eta, Float_t zDisk, Float_t * radius)
307 Float_t expEta = TMath::Exp (-eta);
308 Float_t theta = TMath::ATan (expEta);
310 Float_t rad = zDisk * (TMath::Tan (theta));
314 printf ("%s: eta %f radius %f\n", ClassName (), eta, rad);
317 //---------------------------------------------------------------------
320 void AliFMD::Digits2Reco()
322 AliFMDReconstruction * reconstruction = new AliFMDReconstruction(fLoader->GetRunLoader());
323 cout<<" AliFMD::Digits2Reco >> "<<reconstruction<<endl;
324 reconstruction->Exec();
325 delete reconstruction;
327 //-----------------------------------------------------------------------
329 void AliFMD::MakeBranchInTreeD(TTree *treeD, const char *file)
332 // Create TreeD branches for the FMD
334 const Int_t kBufferSize = 4000;
336 sprintf(branchname,"%s",GetName());
339 MakeBranchInTree(treeD, branchname,&fDigits, kBufferSize, file);