59255c09dcee35f0f7be08a078fa72cb64c159bb
[u/mrichter/AliRoot.git] / TTherminator / TTherminator.cxx
1 ///////////////////////////////////////////////////////////////////////////////
2 //                                                                           //
3 // TTherminator: global interface class to the Therminator model.            //
4 // Initialized global variables and runs the event generation                //
5 //                                                                           //
6 ///////////////////////////////////////////////////////////////////////////////
7 /******************************************************************************
8  *                      T H E R M I N A T O R                                 *
9  *                   THERMal heavy-IoN generATOR                              *
10  *                           version 1.0                                      *
11  *                                                                            *
12  * Authors of the model: Wojciech Broniowski, Wojciech.Broniowski@ifj.edu.pl, *
13  *                       Wojciech Florkowski, Wojciech.Florkowski@ifj.edu.pl  *
14  * Authors of the code:  Adam Kisiel, kisiel@if.pw.edu.pl                     *
15  *                       Tomasz Taluc, ttaluc@if.pw.edu.pl                    *
16  * Code designers: Adam Kisiel, Tomasz Taluc, Wojciech Broniowski,            *
17  *                 Wojciech Florkowski                                        *
18  *                                                                            *
19  * For the detailed description of the program and furhter references         * 
20  * to the description of the model plesase refer to: nucl-th/0504047,         *
21  * accessibile at: http://www.arxiv.org/nucl-th/0504047                       *
22  *                                                                            *
23  * Homepage: http://hirg.if.pw.edu.pl/en/therminator/                         *
24  *                                                                            *
25  * This code can be freely used and redistributed. However if you decide to   *
26  * make modifications to the code, please contact the authors, especially     *
27  * if you plan to publish the results obtained with such modified code.       *
28  * Any publication of results obtained using this code must include the       *
29  * reference to nucl-th/0504047 and the published version of it, when         *
30  * available.                                                                 *
31  *                                                                            *
32  *****************************************************************************/
33 #include <TTherminator.h>
34 #include <fstream>
35 #include <TDatabasePDG.h>
36 #include <TParticle.h>
37 #include <TClonesArray.h>
38 #include <TClass.h>
39
40 ReadPar *sRPInstance;
41 STR      sRPFileName;
42 int      sNumEvents;
43 int      sRunType; 
44 int      sTables;
45 int      sModel;
46 int      sIntegrateSample;
47
48 ClassImp(TTherminator)
49
50 TTherminator::TTherminator():
51   fCalka(0),
52   fEvent(0),
53   fPartDB(0)
54 {
55   // Default constructor
56   fPartDB = new ParticleDB();
57 }
58 TTherminator::TTherminator(const TTherminator & therm) :
59   TGenerator(therm),
60   fCalka(0),
61   fEvent(0),
62   fPartDB(new ParticleDB())
63 {
64   // Copy constructor
65   //  fPartDB = new ParticleDB();
66 }
67 TTherminator& TTherminator::operator=(const TTherminator & therm)
68 {
69   if (this != &therm) {
70     fCalka = therm.fCalka;
71     fEvent = therm.fEvent;
72     delete fPartDB;
73     fPartDB = new ParticleDB();
74   }
75
76   return *this;
77 }
78
79 TTherminator::~TTherminator()
80 {
81   // Destructor
82   if (sRPInstance) delete sRPInstance;
83   if (fEvent) delete fEvent;
84   if (fCalka) delete fCalka;
85   if (fPartDB) delete fPartDB;
86 }
87
88 void TTherminator::ReadParameters()
89 {
90   // Read in global model parameters
91   STR tModel;
92   STR tTable;
93   
94   try {
95     sNumEvents = atoi(sRPInstance->getPar("NumberOfEvents").Data());
96     tModel = sRPInstance->getPar("FreezeOutModel");
97     if (tModel.Contains("SingleFreezeOut"))
98       sModel = 0;
99 /*MCH begin*/
100     else if (tModel.Contains("Lhyquid3D"))
101       sModel = 10;
102     else if (tModel.Contains("Lhyquid2D"))
103       sModel = 11;
104 /*MCH end*/      
105     else if (tModel.Contains("BlastWaveVTDelay"))
106       sModel = 6;
107     else if (tModel.Contains("BlastWaveVT"))
108       sModel = 2;
109     else if (tModel.Contains("BlastWaveVLinearFormation"))
110       sModel = 7;
111     else if (tModel.Contains("BlastWaveVLinearDelay"))
112       sModel = 8;
113     else if (tModel.Contains("BlastWaveVLinear"))
114       sModel = 4;
115     else if (tModel.Contains("FiniteHydro"))
116       sModel = 5;
117     else {
118       PRINT_MESSAGE("Unknown model type: " << tModel.Data());
119       PRINT_MESSAGE("Please provide the proper name");
120       exit(0);
121     }
122     if (atoi(sRPInstance->getPar("Randomize").Data()) == 1)
123       sRunType = 4;
124     else
125       sRunType = 3;
126     tTable = sRPInstance->getPar("TableType");
127     if (tTable.Contains("Mathematica"))
128       sTables = 0;
129     else if (tTable.Contains("SHARE"))
130       sTables = 1;
131     else {
132       PRINT_MESSAGE("Unknown table type: " << tTable.Data());
133       exit(0);
134     }
135     sIntegrateSample = atoi(sRPInstance->getPar("NumberOfIntegrateSamples").Data());
136     fInputDir = sRPInstance->getPar("InputDirSHARE");
137   }
138   catch (STR tError) {
139     PRINT_DEBUG_1("RunBFPW::ReadParameters - Caught exception " << tError);
140     PRINT_MESSAGE("Did not find one of the neccessary parameters in the parameters file.");
141     exit(0);
142   }
143 }
144
145 void        TTherminator::Initialize(){
146   // Initialize global variables
147   // and particle and decay tables
148   Parser       *tParser;
149   
150   sRPFileName = "therminator.in";
151   sRPInstance = new ReadPar(sRPFileName.Data());
152
153   ReadParameters();
154   
155   tParser = new Parser(fPartDB);
156
157   tParser->ReadShare();
158     
159   fCalka = new Integrator(sIntegrateSample);
160   fCalka->ReadMultInteg(fPartDB);
161
162
163   // Read in particle table from share
164   // and add missing particle type to TDatabasePDG
165
166   char str[50];
167   char str1[200];
168     
169   //  ParticleType *tPartBuf;
170
171   TDatabasePDG *tInstance = TDatabasePDG::Instance();
172   TParticlePDG *tParticleType;
173
174   //  AliWarning(Form("Reading particle types from particles.data"));
175
176   ifstream in((fInputDir+"/"+"particles.data").Data());
177   //  ifstream in("particles.data");
178   
179   int charge;
180     
181   int number=0;
182   if ((in) && (in.is_open()))
183     {
184       //START OF HEAD-LINE
185       in.ignore(200,'\n');
186       in.ignore(200,'\n');
187       in.ignore(200,'\n');
188       //END OF HEAD-LINE
189       
190       while (in>>str)
191         {
192           if (/*(*str == '#')||*/(*str<65)||(*str>122))
193             {
194               in.getline(str1,200);
195               continue;
196             }
197           double mass, gamma, spin, tI3, tI, q, s, aq, as, c, ac, mc;
198           
199           in>>mass>>gamma>>spin>>tI>>tI3>>q>>s>>aq>>as>>c>>ac>>mc;
200           number++;
201           tParticleType = tInstance->GetParticle((int) mc);
202           if (!tParticleType) {
203             charge = 0;
204             if (strstr(str, "plu")) charge = 1;
205             if (strstr(str, "min")) charge = -1;
206             if (strstr(str, "plb")) charge = -1;
207             if (strstr(str, "mnb")) charge = 1;
208             if (strstr(str, "plp")) charge = 2;
209             if (strstr(str, "ppb")) charge = -2;
210             tInstance->AddParticle(str, str, mass, gamma == 0.0 ? 1:0, gamma, charge , "meson", (int) mc);
211             //      printf("Added particle %s with PDG PID %d charge %d", str, (int) mc, charge);
212             //AliWarning(Form("Added particle %s with PDG PID %d charge %d", str, (int) mc, charge));
213             //      AliWarning(Form("Quantum numbers q s c aq as ac tI3 %lf %lf %lf %lf %lf %lf %lf", q, s, c, aq, as, ac, tI3));
214
215           }
216         }
217       in.close();
218     }
219
220   delete tParser;
221 }
222
223 void        TTherminator::GenerateEvent()
224 {
225   // Run single event generation
226   if ((sRunType == 3) || (sRunType == 4))
227     {
228       if (sRunType==4)
229         fCalka->Randomize();
230
231       if (!fEvent) fEvent = new Event(fPartDB, fCalka);
232       if (sRunType == 4) fEvent->Randomize();
233       
234       fEvent->GenerateEvent();
235       fEvent->DecayParticles();
236       //      fEvent->WriteEvent(0);
237     }  
238 }
239
240 Int_t       TTherminator::ImportParticles(TClonesArray *particles, Option_t */*option*/)
241 {
242   // Import particles from a generated event into an external array
243   const double kFmToGev = 0.197327;
244
245   if (particles == 0) return 0;
246   TClonesArray &particlesR = *particles;
247   particlesR.Clear();
248   Int_t nump = 0;
249   if (!fEvent) return 0;
250   Int_t numpart = fEvent->GetParticleCount();
251   printf("\n TTherminator: Therminator stack contains %d particles.\n", numpart);
252   for (Int_t iPart=0; iPart<numpart; iPart++) {
253     Particle *tPart = fEvent->GetParticleOfCount(iPart);
254     Int_t tFather;
255     tFather = tPart->GetFather();
256
257     if (tFather> -1) {
258       TParticle *mother = (TParticle*) (particlesR.UncheckedAt(tFather+1));        
259       mother->SetLastDaughter(iPart);
260       if (mother->GetFirstDaughter()==-1)
261         mother->SetFirstDaughter(iPart);
262     }
263     nump++;
264     //    printf("Putting %d %d %lf %d\n", tPart->GetParticleType()->GetPDGCode(), iPart, tPart->px, tPart);
265     new (particlesR[iPart]) TParticle(tPart->GetParticleType()->GetPDGCode(), tPart->HadDecayed(),
266                                       tFather, -1, -1, -1,
267                                       tPart->px, tPart->py, tPart->pz, tPart->GetEnergy() ,
268                                       tPart->rx*1.e-13*kFmToGev, tPart->ry*1.e-13*kFmToGev, tPart->rz*1.e-13*kFmToGev, tPart->rt*1.e-13*kFmToGev/3e10);
269     particlesR[iPart]->SetUniqueID(iPart);
270   }
271   
272   return nump;
273 }
274
275 TObjArray*  TTherminator::ImportParticles(Option_t */*option*/)
276 {
277   // Import generated particles into an internal array
278   const double kFmToGev = 0.197327;
279
280   Int_t nump = 0;
281   fParticles->Clear();
282   if (!fEvent) return 0;
283   Int_t numpart = fEvent->GetParticleCount();
284   printf("\n TTherminator: Therminator stack contains %d particles.", numpart);
285   fEvent->InitParticleScan();
286   for (Int_t iPart=0; iPart<numpart; iPart++) {
287     Particle *tPart = fEvent->GetNextParticle();
288     Int_t tFather;
289     tFather = tPart->GetFather();
290     
291     if (tFather> -1) {
292       TParticle *mother = (TParticle*) (fParticles->UncheckedAt(tFather));         
293       mother->SetLastDaughter(iPart);
294       if (mother->GetFirstDaughter()==-1)
295         mother->SetFirstDaughter(iPart);
296     }
297     TParticle* p = new TParticle(tPart->GetParticleType()->GetPDGCode(), tPart->HadDecayed(),
298                                  tFather, -1, -1, -1,
299                                  tPart->px, tPart->py, tPart->pz, tPart->GetEnergy() ,
300                                  tPart->rx*1.e-13*kFmToGev, tPart->ry*1.e-13*kFmToGev, tPart->rz*1.e-13*kFmToGev, tPart->rt*1.e-13*kFmToGev/3e10);
301     p->SetUniqueID(iPart);
302     fParticles->Add(p);
303   }
304   nump = fEvent->GetParticleCount();
305   
306   return fParticles;
307   
308 }