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>
46 #include <TClonesArray.h>
47 #include <TLorentzVector.h>
54 #include "AliFMDhit.h"
55 #include "AliFMDdigit.h"
61 //_____________________________________________________________________________
62 AliFMD::AliFMD(): AliDetector()
65 // Default constructor for class AliFMD
70 //_____________________________________________________________________________
71 AliFMD::AliFMD(const char *name, const char *title)
72 : AliDetector(name,title)
75 // Standard constructor for Forward Multiplicity Detector
79 // Initialise Hit array
80 fHits = new TClonesArray("AliFMDhit", 1000);
81 // Digits for each Si disk
82 fDigits = new TClonesArray("AliFMDdigit", 1000);
83 fSDigits = new TClonesArray("AliFMDdigit", 1000) ;
84 gAlice->AddHitList(fHits);
103 //_____________________________________________________________________________
104 void AliFMD::AddHit(Int_t track, Int_t *vol, Float_t *hits)
107 // Add a hit to the list
109 TClonesArray &lhits = *fHits;
110 new(lhits[fNhits++]) AliFMDhit(fIshunt,track,vol,hits);
112 //_____________________________________________________________________________
113 void AliFMD::AddDigit( Int_t *digits)
115 // add a real digit - as coming from data
118 TClonesArray &ldigits = *fDigits;
119 new(ldigits[fNdigits++]) AliFMDdigit(digits);
122 //_____________________________________________________________________________
123 void AliFMD::BuildGeometry()
126 // Build simple ROOT TNode geometry for event display
129 const int kColorFMD = 7;
131 top=gAlice->GetGeometry()->GetNode("alice");
133 // FMD define the different volumes
134 new TRotMatrix("rot901","rot901", 90, 0, 90, 90, 180, 0);
136 new TTUBE("S_FMD0","FMD volume 0","void",4.73,17.7,1.5);
138 node = new TNode("FMD0","FMD0","S_FMD0",0,0,64,"");
139 node->SetLineColor(kColorFMD);
142 new TTUBE("S_FMD1","FMD volume 1","void",23.4,36.,1.5);
144 node = new TNode("FMD1","FMD1","S_FMD1",0,0,85,"");
145 node->SetLineColor(kColorFMD);
148 new TTUBE("S_FMD2","FMD volume 2","void",4.73,17.7,1.5);
150 node = new TNode("FMD2","FMD2","S_FMD2",0,0,-64,"");
151 node->SetLineColor(kColorFMD);
154 new TTUBE("S_FMD3","FMD volume 3","void",23.4,36.,1.5);
156 node = new TNode("FMD3","FMD3","S_FMD3",0,0,-85,"");
157 node->SetLineColor(kColorFMD);
160 new TTUBE("S_FMD4","FMD volume 4","void",5,15,0.015);
162 node = new TNode("FMD4","FMD4","S_FMD4",0,0,-270,"");
163 node->SetLineColor(kColorFMD);
167 new TTUBE("S_FMD5","FMD volume 5","void",5,14,0.015);
169 node = new TNode("FMD5","FMD5","S_FMD5",0,0,-630,"");
170 node->SetLineColor(kColorFMD);
175 //_____________________________________________________________________________
176 Int_t AliFMD::DistanceToPrimitive(Int_t px, Int_t py)
179 // Calculate the distance from the mouse to the FMD on the screen
184 //___________________________________________
185 void AliFMD::ResetHits()
187 // Reset number of clusters and the cluster array for this detector
188 AliDetector::ResetHits();
191 //____________________________________________
192 void AliFMD::ResetDigits()
195 // Reset number of digits and the digits array for this detector
196 AliDetector::ResetHits();
200 //-------------------------------------------------------------------------
204 // Initialis the FMD after it has been built
206 AliMC* pMC = AliMC::GetMC();
209 for(i=0;i<35;i++) printf("*");
210 printf(" FMD_INIT ");
211 for(i=0;i<35;i++) printf("*");
214 // Here the FMD initialisation code (if any!)
215 for(i=0;i<80;i++) printf("*");
220 fIdSens1=pMC->VolId("GRIN"); //Si sensetive volume
222 fIdSens1=pMC->VolId("GFSI"); //Si sensetive volume
225 //---------------------------------------------------------------------
226 void AliFMD::MakeBranch(Option_t* option, char *file)
228 // Create Tree branches for the FMD.
229 const Int_t kBufferSize = 4000;
231 sprintf(branchname,"%s",GetName());
233 AliDetector::MakeBranch(option,file);
235 const char *cD = strstr(option,"D");
239 gAlice->MakeBranchInTree(gAlice->TreeD(),
240 branchname, &fDigits, kBufferSize, file) ;
242 printf("Making Branch %s for digits\n",branchname);
243 gAlice->TreeD()->Print();
247 //_____________________________________________________________________________
248 void AliFMD::SetTreeAddress()
250 // Set branch address for the Hits and Digits Tree.
252 AliDetector::SetTreeAddress();
255 TTree *treeD = gAlice->TreeD();
260 branch = treeD->GetBranch(branchname);
261 if (branch) branch->SetAddress(&fDigits);
268 if (gAlice->TreeS() && fSDigits ) {
269 branch = gAlice->TreeS()->GetBranch("FMD");
270 if (branch) branch->SetAddress(&fSDigits) ;
276 //---------------------------------------------------------------------
278 void AliFMD::SDigits2Digits()
284 printf("nbgr_ev %d\n",nbgr_ev);
285 // Hit2Digits(nbgr_ev,"Add"," ","galice_bgr.root");
288 // Hit2Digits(nbgr_ev,"rien","","");
293 //---------------------------------------------------------------------
297 void AliFMD::Eta2Radius(Float_t eta, Float_t zDisk, Float_t *radius)
299 Float_t expEta=TMath::Exp(-eta);
300 Float_t theta=TMath::ATan(expEta);
302 Float_t rad=zDisk*(TMath::Tan(theta));
305 printf(" eta %f radius %f\n", eta, rad);
308 //---------------------------------------------------------------------
310 void AliFMD::Hits2SDigits(){
312 cout<<"ALiFMD::Hits2SDigits> start...\n";
314 char * fileSDigits = 0 ;
315 char * fileHeader=0 ;
316 AliFMDSDigitizer * sd = new AliFMDSDigitizer("mgalice.root","FMD.SDigit.root") ;