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 5 Si volumes covered pseudorapidity interval //
24 // from 1.7 to 5.1. //
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"
67 #include "AliFMDDigitizer.h"
70 //_____________________________________________________________________________
71 AliFMD::AliFMD ():AliDetector ()
74 // Default constructor for class AliFMD
82 //_____________________________________________________________________________
83 AliFMD::AliFMD (const char *name, const char *title):
84 AliDetector (name, title)
87 // Standard constructor for Forward Multiplicity Detector
91 // Initialise Hit array
92 fHits = new TClonesArray ("AliFMDhit", 1000);
93 // Digits for each Si disk
94 fDigits = new TClonesArray ("AliFMDdigit", 1000);
95 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
96 gAlice->GetMCApp()->AddHitList (fHits);
100 SetMarkerColor (kRed);
103 //-----------------------------------------------------------------------------
120 fReconParticles->Delete ();
121 delete fReconParticles;
127 //_____________________________________________________________________________
128 void AliFMD::AddHit (Int_t track, Int_t * vol, Float_t * hits)
131 // Add a hit to the list
133 TClonesArray & lhits = *fHits;
134 new (lhits[fNhits++]) AliFMDhit (fIshunt, track, vol, hits);
137 //_____________________________________________________________________________
138 void AliFMD::AddDigit (Int_t * digits)
140 // add a real digit - as coming from data
142 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
143 TClonesArray & ldigits = *fDigits;
144 new (ldigits[fNdigits++]) AliFMDdigit (digits);
147 //_____________________________________________________________________________
148 void AliFMD::BuildGeometry ()
151 // Build simple ROOT TNode geometry for event display
154 const int kColorFMD = 5;
156 top = gAlice->GetGeometry ()->GetNode ("alice");
158 // FMD define the different volumes
159 new TRotMatrix ("rot901", "rot901", 90, 0, 90, 90, 180, 0);
161 new TTUBE ("S_FMD0", "FMD volume 0", "void", 4.2, 17.2, 1.5);
163 node = new TNode ("FMD0", "FMD0", "S_FMD0", 0, 0, -62.8, "");
164 node->SetLineColor (kColorFMD);
167 new TTUBE ("S_FMD1", "FMD volume 1", "void", 15.4, 28.4, 1.5);
169 node = new TNode ("FMD1", "FMD1", "S_FMD1", 0, 0, -75.2, "");
170 node->SetLineColor (kColorFMD);
173 new TTUBE ("S_FMD2", "FMD volume 2", "void", 4.2, 17.2, 1.5);
175 node = new TNode ("FMD2", "FMD2", "S_FMD2", 0, 0, 83.2, "");
176 node->SetLineColor (kColorFMD);
179 new TTUBE ("S_FMD3", "FMD volume 3", "void", 15.4, 28.4, 1.5);
181 node = new TNode ("FMD3", "FMD3", "S_FMD3", 0, 0, 75.2, "");
182 node->SetLineColor (kColorFMD);
185 new TTUBE ("S_FMD4", "FMD volume 4", "void", 4.2, 17.2, 1.5);
187 node = new TNode ("FMD4", "FMD4", "S_FMD4", 0, 0, 340, "");
188 node->SetLineColor (kColorFMD);
192 //_____________________________________________________________________________
193 Int_t AliFMD::DistanceToPrimitive (Int_t /*px*/, Int_t /*py*/)
196 // Calculate the distance from the mouse to the FMD on the screen
202 //___________________________________________
203 void AliFMD::ResetHits ()
205 // Reset number of clusters and the cluster array for this detector
206 AliDetector::ResetHits ();
209 //____________________________________________
210 void AliFMD::ResetDigits ()
213 // Reset number of digits and the digits array for this detector
214 AliDetector::ResetDigits ();
218 //-------------------------------------------------------------------------
222 // Initialis the FMD after it has been built
227 printf ("\n%s: ", ClassName ());
228 for (i = 0; i < 35; i++)
230 printf (" FMD_INIT ");
231 for (i = 0; i < 35; i++)
233 printf ("\n%s: ", ClassName ());
235 // Here the FMD initialisation code (if any!)
236 for (i = 0; i < 80; i++)
244 //---------------------------------------------------------------------
245 void AliFMD::MakeBranch (Option_t * option)
247 // Create Tree branches for the FMD.
249 const Int_t kBufferSize = 16000;
250 sprintf (branchname, "%s", GetName ());
252 const char *cH = strstr(option,"H");
253 const char *cD = strstr(option,"D");
254 const char *cR = strstr(option,"R");
256 if (cH && (fHits == 0x0)) fHits = new TClonesArray ("AliFMDhit", 1000);
258 AliDetector::MakeBranch (option);
261 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
262 MakeBranchInTree(fLoader->TreeD(), branchname,&fDigits, kBufferSize, 0);
266 if (fReconParticles == 0x0)
267 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
268 MakeBranchInTree(fLoader->TreeR(), branchname,&fReconParticles, kBufferSize, 0);
273 //_____________________________________________________________________________
274 void AliFMD::SetTreeAddress ()
276 // Set branch address for the Hits and Digits Tree.
279 if (fLoader->TreeH() && (fHits == 0x0))
280 fHits = new TClonesArray ("AliFMDhit", 1000);
282 AliDetector::SetTreeAddress ();
285 TTree *treeD = fLoader->TreeD();
289 if (fDigits == 0x0) fDigits = new TClonesArray ("AliFMDdigit", 1000);
290 branch = treeD->GetBranch (branchname);
292 branch->SetAddress (&fDigits);
295 if (fLoader->TreeR() && fReconParticles)
297 if (fReconParticles == 0x0)
298 fReconParticles=new TClonesArray("AliFMDReconstParticles",1000);
299 branch = fLoader->TreeR()->GetBranch("FMD");
300 if (branch) branch->SetAddress(&fReconParticles) ;
307 AliFMD::Eta2Radius (Float_t eta, Float_t zDisk, Float_t * radius)
309 Float_t expEta = TMath::Exp (-eta);
310 Float_t theta = TMath::ATan (expEta);
312 Float_t rad = zDisk * (TMath::Tan (theta));
316 printf ("%s: eta %f radius %f\n", ClassName (), eta, rad);
319 //-----------------------------------------------------------------------
321 void AliFMD::MakeBranchInTreeD(TTree *treeD, const char *file)
324 // Create TreeD branches for the FMD
326 const Int_t kBufferSize = 4000;
328 sprintf(branchname,"%s",GetName());
331 MakeBranchInTree(treeD, branchname,&fDigits, kBufferSize, file);
335 //____________________________________________________________________________
336 AliDigitizer* AliFMD::CreateDigitizer(AliRunDigitizer* manager) const
338 return new AliFMDDigitizer(manager);