Line data Source code
1 : /**************************************************************************
2 : * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 : * *
4 : * Author: The ALICE Off-line Project. *
5 : * Contributors are mentioned in the code where appropriate. *
6 : * *
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 :
16 : /* $Id$ */
17 :
18 : /////////////////////////////////////////////////////////////////////
19 : // //
20 : // T0 ( T-zero) detector version 1 //
21 : //
22 : //Begin Html
23 : /*
24 : <img src="gif/AliT0v1Class.gif">
25 : */
26 : //End Html
27 : // //
28 : // //
29 : //////////////////////////////////////////////////////////////////////
30 :
31 : #include <Riostream.h>
32 : #include <stdlib.h>
33 :
34 : #include "TGeoCompositeShape.h"
35 : #include "TGeoManager.h"
36 : #include "TGeoMatrix.h"
37 : #include "TGeoPcon.h"
38 : #include "TGeoTube.h"
39 : #include <TGeoGlobalMagField.h>
40 : #include <TGraph.h>
41 : #include <TLorentzVector.h>
42 : #include <TMath.h>
43 : #include <TVirtualMC.h>
44 : #include <TString.h>
45 :
46 : #include "AliLog.h"
47 : #include "AliMagF.h"
48 : #include "AliRun.h"
49 :
50 : #include "AliT0hit.h"
51 : #include "AliT0v1.h"
52 : #include "AliT0Parameters.h"
53 :
54 : #include "AliMC.h"
55 : #include "AliCDBLocal.h"
56 : #include "AliCDBStorage.h"
57 : #include "AliCDBManager.h"
58 : #include "AliCDBEntry.h"
59 : #include "AliTrackReference.h"
60 :
61 12 : ClassImp(AliT0v1)
62 :
63 :
64 : //--------------------------------------------------------------------
65 12 : AliT0v1::AliT0v1(): AliT0(),
66 12 : fIdSens1(0),
67 12 : fEffPMT(0x0)
68 :
69 60 : {
70 : //
71 : // Standart constructor for T0 Detector version 0
72 24 : }
73 : //--------------------------------------------------------------------
74 : AliT0v1::AliT0v1(const char *name, const char *title):
75 1 : AliT0(name,title),
76 1 : fIdSens1(0),
77 1 : fEffPMT(0x0)
78 :
79 5 : {
80 : //
81 : // Standart constructor for T0 Detector version 0
82 : //
83 1 : fIshunt = 2;
84 1 : AliT0Parameters* param = AliT0Parameters::Instance();
85 50 : for (Int_t i=0; i<24; i++){
86 24 : TGraph* grEff = param ->GetPMTeff(i);
87 24 : fEffPMT.AddAtAndExpand(grEff,i);
88 : }
89 2 : }
90 : //_____________________________________________________________________________
91 :
92 : AliT0v1::~AliT0v1()
93 78 : {
94 : // desctructor
95 39 : }
96 :
97 : //-------------------------------------------------------------------------
98 : void AliT0v1::CreateGeometry()
99 : {
100 : //
101 : // Create the geometry of T0 Detector version 0
102 : //
103 : // begin Html
104 : /*
105 : <img src="gif/AliT0v0.gif">
106 : */
107 : //
108 :
109 :
110 2 : Int_t *idtmed = fIdtmed->GetArray();
111 : /*
112 : AliT0Parameters* param = AliT0Parameters::Instance();
113 : param->Init();
114 : Float_t zdetC = param->GetZposition(0);
115 : Float_t zdetA = param->GetZposition(1);
116 : */
117 : Float_t zdetC = 69.7;
118 : Float_t zdetA = 373.;
119 :
120 : Int_t is;
121 1 : Int_t idrotm[999];
122 : Double_t x,y,z;
123 : //C T0 mother volume
124 1 : Float_t pstartR[18]={0., 360., 5.,
125 : -6.8, 4.25, 10., //-76.5+0.00+69.7
126 : // -0.75 , 4.45, 10., // -76.5+6.05+69.7
127 : // 1.25 , 4.45, 10., //-76.5+8.05+69.7
128 : -0.75 , 4.5, 10., // -76.5+6.05+69.7
129 : 1.25 , 4.5, 10., //-76.5+8.05+69.7
130 : 1.25 , 5.1, 10, //-76.5+8.05+69.7
131 : 6.8 , 5.1, 10.}; //-62.9+0.00+69.7
132 :
133 1 : Float_t pstart[3]={4., 12.5,6.8};
134 1 : Float_t pinstart[3]={0.,1.45,6.5};
135 1 : Float_t ppmt[3]={0.,1.4,3.5};
136 1 : Float_t ptop[3]={0.,1.,1.0};
137 1 : Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
138 1 : Float_t ptopout[3]={1.,1.01, 1.}; //metal air around raiator for photos reflection
139 1 : Float_t pbot[3]={0.6,1.2,0.1};
140 1 : Float_t pglass[3]={1.2,1.3,2.};
141 1 : Float_t pcer[3]={0.9,1.1,1.35};
142 1 : Float_t psteel[3]={0.9,1.1,0.15};
143 1 : Float_t psupport1[3] = {4.51,4.52,4.0};//C kozhuh vnutri
144 1 : Float_t psupport2[3] = {9.5,9.6,4.0};// snaruzhi C
145 1 : Float_t psupport3[3] = {4.52,9.5, 0.05};//kryshki C
146 1 : Float_t psupport5[3] = {1.44,1.45,6.5}; // stakanchik dlai feu C
147 1 : Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika Al
148 1 : Float_t psupport7[3] = {1.44,1.45,0.4}; //kolechko snaruzhu stakanchika Al
149 :
150 : // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
151 1 : AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
152 1 : Float_t ppcon[70];
153 1 : ppcon[0] = 0;
154 1 : ppcon[1] = 360;
155 1 : ppcon[2] = 13;
156 : // 1:
157 1 : ppcon[3] = 7.2;
158 1 : ppcon[4] = 4.4;
159 1 : ppcon[5] = 4.5;
160 : // 2
161 1 : ppcon[6] = 8.2;
162 1 : ppcon[7] = 4.4;
163 1 : ppcon[8] = 4.5;
164 : // 3
165 1 : ppcon[9] = 8.2;
166 1 : ppcon[10] = 4.4;
167 1 : ppcon[11] = 5.1;
168 :
169 : // 4
170 :
171 1 : ppcon[12] = 8.3;
172 1 : ppcon[13] = 4.4;
173 1 : ppcon[14] = 5.1;
174 : // 5
175 :
176 1 : ppcon[15] = 8.3;
177 1 : ppcon[16] = 4.9;
178 1 : ppcon[17] = 5.1;
179 :
180 : // 6
181 1 : ppcon[18] = 15.;
182 1 : ppcon[19] = 4.9;
183 1 : ppcon[20] = 5.1;
184 :
185 : // 7
186 1 : ppcon[21] = 15.;
187 1 : ppcon[22] = 3.15 ;
188 1 : ppcon[23] = 5.1;
189 :
190 : /// 8
191 1 : ppcon[24] = 15.01;
192 1 : ppcon[25] = 3.15;
193 1 : ppcon[26] = 5.1;
194 :
195 : /// 9
196 1 : ppcon[27] = 15.01;
197 1 : ppcon[28] = 3.15;
198 1 : ppcon[29] = 3.25;
199 :
200 :
201 : /// 9
202 1 : ppcon[30] = 19.71;
203 1 : ppcon[31] = 3.15;
204 1 : ppcon[32] = 3.25;
205 : // 10
206 1 : ppcon[33] = 19.8;
207 1 : ppcon[34] = 3.15;
208 1 : ppcon[35] = 3.25;
209 : // 11
210 1 : ppcon[36] = 19.8;
211 1 : ppcon[37] = 3.15;
212 1 : ppcon[38] = 7.6;
213 :
214 : // 14
215 :
216 1 : ppcon[39] = 19.99;
217 1 : ppcon[40] = 3.15;
218 1 : ppcon[41] = 7.6;
219 :
220 :
221 1 : TVirtualMC::GetMC()->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
222 : z = -zdetC;
223 1 : TVirtualMC::GetMC()->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
224 :
225 : //-------------------------------------------------------------------
226 : // T0 volume
227 : //-------------------------------------------------------------------
228 :
229 :
230 1 : TVirtualMC::GetMC()->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
231 1 : TVirtualMC::GetMC()->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
232 : // TVirtualMC::GetMC()->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
233 :
234 : //T0 interior
235 1 : TVirtualMC::GetMC()->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
236 1 : TVirtualMC::GetMC()->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
237 :
238 1 : TVirtualMC::GetMC()->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
239 1 : TVirtualMC::GetMC()->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi C
240 1 : TVirtualMC::GetMC()->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai C
241 1 : TVirtualMC::GetMC()->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai C
242 : // TVirtualMC::GetMC()->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
243 1 : TVirtualMC::GetMC()->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu C
244 1 : TVirtualMC::GetMC()->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika Al
245 1 : TVirtualMC::GetMC()->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
246 :
247 :
248 :
249 : //non-absorber side support and T0A !!!!!!!!
250 :
251 1 : TGeoPcon * supPgon = new TGeoPcon("0supPgon",0.,360.,4);
252 1 : supPgon->DefineSection(0, 0, 4.1, 5.5);
253 1 : supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
254 1 : supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
255 1 : supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
256 1 : TGeoTranslation *trPgon = new TGeoTranslation("0trPgon",0,0,0);
257 1 : trPgon->RegisterYourself();
258 :
259 1 : TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("0STL");//empty segment
260 1 : TGeoVolume *ins = gGeoManager->GetVolume("0INS");
261 :
262 1 : new TGeoTube("0HOLE", 0, 1.51, 6.5);
263 1 : TGeoTranslation *tr [12];
264 1 : Double_t angle = 2 * TMath::Pi() / 12;
265 : // Char_t nameTr[40];
266 1 : TString nameTr;
267 26 : for (Int_t itr=0; itr<12; itr++) {
268 : // sprintf (nameTr,"0TR%i",itr+1);
269 24 : nameTr = Form("0TR%i",itr+1);
270 12 : x = 6.5 * TMath::Sin(itr * angle);
271 12 : y = 6.5 * TMath::Cos(itr * angle);
272 48 : tr[itr] = new TGeoTranslation(nameTr.Data(),x,y,6.5);
273 12 : tr[itr]->RegisterYourself();
274 12 : stlin->AddNode(ins,itr+13,tr[itr]);
275 : }
276 2 : TGeoCompositeShape *supsh = new TGeoCompositeShape("0supsh","0supPgon:0trPgon-(0HOLE:0TR1+0HOLE:0TR2+0HOLE:0TR3+0HOLE:0TR4+0HOLE:0TR5+0HOLE:0TR6+0HOLE:0TR7+0HOLE:0TR8+0HOLE:0TR9+0HOLE:0TR10+0HOLE:0TR11+0HOLE:0TR12)");
277 :
278 1 : TGeoMedium *medal = gGeoManager->GetMedium("T0_Aluminium$");
279 2 : TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
280 3 : stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
281 :
282 1 : TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
283 3 : alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
284 :
285 : // T0A finished
286 :
287 : //T0C
288 : // first ring: 12 units of Scintillator+PMT+divider
289 1 : Float_t theta = (180 / TMath::Pi()) * TMath::ATan(6.6 / zdetC);
290 1 : Float_t phi[3];
291 26 : for (is=0; is<12; is++)
292 : {
293 :
294 12 : x = 6.6 * TMath::Sin(is * angle);
295 12 : y = 6.6 * TMath::Cos(is * angle);
296 :
297 12 : phi[0] = -30 * is;
298 12 : phi[1] = 90 - is * 30;
299 12 : phi[2] = 90 - is * 30;
300 96 : for (Int_t j = 0; j < 3; j++)
301 63 : if (phi[j] < 0) phi[j] += 360;
302 :
303 24 : AliMatrix (idrotm[902 + is], 90., phi[0],
304 12 : 90. + theta, phi[1],
305 12 : theta, phi[2]);
306 12 : z=-pstart[2]+pinstart[2]+0.3;
307 24 : TVirtualMC::GetMC()->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
308 : }
309 :
310 : x=0;
311 : y=0;
312 : // z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
313 1 : z=-pinstart[2]+ppmt[2]+0.08; //+psupport6[2];
314 2 : TVirtualMC::GetMC()->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
315 : // PMT
316 :
317 : // Entry window (glass)
318 2 : TVirtualMC::GetMC()->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
319 1 : z=-ppmt[2]+ptop[2];
320 2 : TVirtualMC::GetMC()->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
321 : //"metal" air volume to simulate reclection
322 2 : TVirtualMC::GetMC()->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3);
323 2 : TVirtualMC::GetMC()->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
324 :
325 : //Fotokatod
326 2 : TVirtualMC::GetMC()->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
327 1 : z = -ppmt[2] + 2 * ptop[2] + preg[2];
328 2 : TVirtualMC::GetMC()->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
329 : // Bottom glass
330 2 : TVirtualMC::GetMC()->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
331 1 : z=ppmt[2]-pbot[2];
332 2 : TVirtualMC::GetMC()->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
333 : // Side cylinder glass
334 2 : TVirtualMC::GetMC()->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
335 1 : z=ppmt[2]-pglass[2];
336 2 : TVirtualMC::GetMC()->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
337 : //PMT electrodes support structure
338 2 : TVirtualMC::GetMC()->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
339 2 : TVirtualMC::GetMC()->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
340 1 : z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
341 2 : TVirtualMC::GetMC()->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
342 1 : z +=psteel[2]+pcer[2];
343 2 : TVirtualMC::GetMC()->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
344 :
345 : //Support absorber (C) side
346 1 : z=-pstart[2]+psupport1[2];// 0.05; //0.1;
347 2 : TVirtualMC::GetMC()->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
348 2 : TVirtualMC::GetMC()->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
349 1 : z=-pstart[2]+psupport3[2];// - 0.1;
350 2 : TVirtualMC::GetMC()->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
351 1 : z=-pstart[2]+2.*psupport1[2];//+0.1;
352 2 : TVirtualMC::GetMC()->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
353 2 : TVirtualMC::GetMC()->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
354 1 : z=-pinstart[2]+psupport6[2]; //-0.1;
355 2 : TVirtualMC::GetMC()->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
356 :
357 1 : z=pinstart[2]-psupport7[2];
358 : // TVirtualMC::GetMC()->Gspos("0SU8",1,"0SU6",0,0,z,0,"ONLY"); //Al kolechko
359 :
360 :
361 1 : Float_t par[3];
362 1 : par[0]=4.4;
363 1 : par[1]=4.5;
364 1 : par[2]=0.5;
365 2 : TVirtualMC::GetMC()->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
366 1 : z=ppcon[3]+par[2];
367 2 : TVirtualMC::GetMC()->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
368 1 : z += par[2];
369 1 : par[0]=4.4;
370 1 : par[1]=5.1;
371 1 : par[2]=0.05;
372 2 : TVirtualMC::GetMC()->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
373 1 : z += par[2];
374 2 : TVirtualMC::GetMC()->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
375 1 : z=z+par[2];
376 1 : par[0]=4.9;
377 1 : par[1]=5.0;
378 1 : par[2]=6.7/2;
379 2 : TVirtualMC::GetMC()->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
380 1 : z += par[2];
381 2 : TVirtualMC::GetMC()->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
382 1 : z += par[2];
383 :
384 1 : par[0]=3.15;
385 1 : par[1]=4.9;
386 1 : par[2]=0.01/2;
387 :
388 2 : TVirtualMC::GetMC()->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
389 :
390 1 : z += par[2];
391 : // z -= par[2];
392 2 : TVirtualMC::GetMC()->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
393 1 : z=z+par[2];
394 1 : par[0]=3.15;
395 1 : par[1]=3.16;
396 1 : par[2]=4.7/2;
397 2 : TVirtualMC::GetMC()->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
398 1 : z += par[2];
399 2 : TVirtualMC::GetMC()->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
400 1 : z=z+par[2];
401 1 : par[0]=3.16; // eta chast' prikruchena k absorberu
402 1 : par[1]=7.4;
403 1 : par[2]=0.01;
404 2 : TVirtualMC::GetMC()->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
405 : // z += par[2];
406 1 : z = ppcon[39] - par[2];
407 2 : TVirtualMC::GetMC()->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
408 1 : par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
409 1 : par[1]=7.4;
410 1 : par[2]=0.01;
411 2 : TVirtualMC::GetMC()->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
412 2 : TVirtualMC::GetMC()->Gspos("0SN2",1,"0SUP",0,0,z,0,"MANY");
413 :
414 :
415 :
416 :
417 1 : }
418 : //------------------------------------------------------------------------
419 : void AliT0v1::AddAlignableVolumes() const
420 : {
421 : //
422 : // Create entries for alignable volumes associating the symbolic volume
423 : // name with the corresponding volume path. Needs to be syncronized with
424 : // eventual changes in the geometry.
425 : //
426 :
427 : // TString volPath;
428 : // TString symName, sn;
429 :
430 :
431 :
432 :
433 2 : TString volPath;
434 2 : TString symName, sn;
435 :
436 1 : TString vpA = "/ALIC_1/0STL_1/0INS_";
437 1 : TString vpC = "/ALIC_1/0STR_1/0INS_";
438 1 : TString vpInside = "/0PMT_1/0TOP_1";
439 1 : TString vpAalign = "/ALIC_1/0STL_1";
440 1 : TString vpCalign = "/ALIC_1/0STR_1";
441 :
442 54 : for (Int_t imod=0; imod<26; imod++)
443 : {
444 26 : if (imod < 24)
445 : {
446 24 : if (imod < 12)
447 24 : { volPath = vpC; sn="T0/C/PMT";}
448 : else
449 24 : { volPath = vpA; sn="T0/A/PMT";}
450 24 : volPath += imod+1;
451 24 : volPath += vpInside;
452 24 : symName = sn;
453 24 : symName += imod+1;
454 : }
455 2 : else if (imod == 24)
456 2 : {volPath = vpCalign; symName="/ALIC_1/0STR_1";}
457 : else
458 2 : {volPath = vpAalign; symName="/ALIC_1/0STL_1";}
459 :
460 130 : AliDebug(2,"--------------------------------------------");
461 130 : AliDebug(2,Form("Alignable object %d", imod));
462 130 : AliDebug(2,Form("volPath=%s\n",volPath.Data()));
463 130 : AliDebug(2,Form("symName=%s\n",symName.Data()));
464 130 : AliDebug(2,"--------------------------------------------");
465 104 : if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
466 0 : AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
467 : symName.Data(),volPath.Data()));
468 : }
469 1 : }
470 : //------------------------------------------------------------------------
471 : void AliT0v1::CreateMaterials()
472 : {
473 2 : Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
474 1 : Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
475 : // Float_t a,z,d,radl,absl,buf[1];
476 : // Int_t nbuf;
477 : // AIR
478 :
479 1 : Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
480 1 : Float_t zAir[4]={6.,7.,8.,18.};
481 1 : Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
482 : Float_t dAir = 1.20479E-3;
483 : Float_t dAir1 = 1.20479E-11;
484 :
485 : // Scintillator CH
486 1 : Float_t ascin[2]={1.01,12.01};
487 1 : Float_t zscin[2]={1,6};
488 1 : Float_t wscin[2]={1,1};
489 : Float_t denscin=1.03;
490 : //Lucite C(CH3)CO2CH3
491 1 : Float_t alucite[3]={1.01,12.01,15.999};
492 1 : Float_t zlucite[3]={1,6,8};
493 1 : Float_t wlucite[3]={8,5,2};
494 : Float_t denlucite=1.16;
495 : // PMT glass SiO2
496 1 : Float_t aglass[2]={28.0855,15.9994};
497 1 : Float_t zglass[2]={14.,8.};
498 1 : Float_t wglass[2]={1.,2.};
499 : Float_t dglass=2.65;
500 : // Ceramic 97.2% Al2O3 , 2.8% SiO2
501 : // Float_t wcer[2]={0.972,0.028};
502 1 : Float_t aCeramic[2] = { 26.981539,15.9994 };
503 1 : Float_t zCeramic[2] = { 13.,8. };
504 1 : Float_t wCeramic[2] = { 2.,3. };
505 : Float_t denscer = 3.6;
506 :
507 : // Brass 80% Cu, 20% Zn
508 1 : Float_t abrass[2] = {63.546,65.39};
509 1 : Float_t zbrass[2] = {29,30};
510 1 : Float_t wbrass[2] = {0.8,0.2};
511 : Float_t denbrass=8.96;
512 :
513 : //Ribber C6H12S
514 1 : Float_t aribber[3] = {12.,1.,32.};
515 1 : Float_t zribber[3] = {6.,1.,16.};
516 1 : Float_t wribber[3] = {6.,12.,1.};
517 : Float_t denribber=0.8;
518 : // Support inside
519 1 : Float_t asupport[2] = {12.,1.};
520 1 : Float_t zsupport[2] = {6.,1.};
521 1 : Float_t wsupport[2] = {1.,1.};
522 : Float_t densupport=0.1;
523 :
524 : //*** Definition Of avaible T0 materials ***
525 1 : AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
526 1 : AliMixture(1, "Vacuum$", aAir, zAir, dAir1,4,wAir);
527 1 : AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
528 1 : AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
529 1 : AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
530 :
531 1 : AliMixture( 3, "Ceramic $",aCeramic, zCeramic, denscer, -2, wCeramic);
532 1 : AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
533 : /*
534 : char namate[21]="";
535 :
536 : TVirtualMC::GetMC()->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
537 : acer[0]=a;
538 :
539 : zcer[0]=z;
540 : TVirtualMC::GetMC()->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
541 : acer[1]=a;
542 : zcer[1]=z;
543 : AliMixture( 11, "Ceramic $", acer, zcer, denscer, 2, wcer);
544 : */
545 1 : AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
546 1 : AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
547 1 : AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
548 1 : AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
549 1 : AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
550 1 : AliMixture( 21, "PMT Optical glass $",aglass,zglass,dglass,-2,wglass);
551 1 : AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
552 1 : AliMixture(22, "T0 Opt Air$", aAir, zAir, dAir,4,wAir);
553 1 : AliMixture(23, "T0 Opt Air Next$", aAir, zAir, dAir,4,wAir);
554 :
555 1 : AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
556 1 : AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
557 1 : AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
558 1 : AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
559 1 : AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
560 1 : AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
561 1 : AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
562 1 : AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
563 1 : AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
564 1 : AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
565 1 : AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
566 1 : AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
567 1 : AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
568 1 : AliMedium(17, "T0 OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
569 1 : AliMedium(18, "T0 OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
570 1 : AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
571 :
572 3 : AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
573 :
574 :
575 1 : }
576 :
577 : //-------------------------------------------------------------------
578 : void AliT0v1::DefineOpticalProperties()
579 : {
580 : // Optical properties definition.
581 2 : Int_t *idtmed = fIdtmed->GetArray();
582 : // Definition Cherenkov parameters
583 : int i;
584 : const Int_t kNbins=31;
585 :
586 1 : Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
587 1 : Double_t efficMet[kNbins], aReflMet[kNbins];
588 :
589 : // quartz 20mm
590 1 : Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
591 : 25.9, 25.3, 24.9, 24.5, 23.7,
592 : 23.2, 22.8, 22.4, 21.8, 21.3,
593 : 22.8, 22.1, 21.7, 21.2, 20.5,
594 : 19.9, 19.3, 18.7, 18.0, 17.1,
595 : 16.3, 15.3, 14.3, 14.3 };
596 :
597 1 : Float_t aPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
598 : 4.48, 4.58, 4.69, 4.81, 4.93,
599 : 5.05, 5.19, 5.33, 5.48, 5.63,
600 : 5.8, 5.97, 6.16, 6.36, 6.57,
601 : 6.8, 7.04, 7.3, 7.58, 7.89,
602 : 8.22, 8.57, 8.97, 9.39 };
603 1 : Double_t dPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
604 : 4.48, 4.58, 4.69, 4.81, 4.93,
605 : 5.05, 5.19, 5.33, 5.48, 5.63,
606 : 5.8, 5.97, 6.16, 6.36, 6.57,
607 : 6.8, 7.04, 7.3, 7.58, 7.89,
608 : 8.22, 8.57, 8.97, 9.39 };
609 :
610 : /*
611 : Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
612 : 0.21, 0.22, 0.23, 0.24, 0.26,
613 : 0.27, 0.29, 0.30, 0.29, 0.29,
614 : 0.28, 0.28, 0.27, 0.26, 0.25,
615 : 0.25, 0.23, 0.20, 0.19, 0.17,
616 : 0.17, 0.17, 0.2, 0.23};
617 : */
618 : // Float_t aAbsSiO2[kNbins]; //quartz 30mm
619 64 : for(i=0;i<kNbins;i++)
620 :
621 : {
622 31 : aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
623 31 : dPckov[i]=dPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
624 : // rindexAir[i]=0.0001;
625 31 : rindexAir[i] = 1.;
626 31 : rindexSiO2[i]=1.458; //refractive index for qwarts
627 31 : rindexCathodeNext[i]=0;
628 31 : efficAll[i]=1.;
629 31 : efficMet[i]=0.;
630 31 : aReflMet[i]=1.;
631 : // aAbsSiO2[i]=28.5; //quartz 30mm
632 31 : absorAir[i]=0.3;
633 31 : absorbCathodeNext[i]=0;
634 :
635 : }
636 :
637 1 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
638 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
639 1 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
640 1 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
641 1 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
642 :
643 : //Define a boarder for radiator optical properties
644 1 : TVirtualMC::GetMC()->DefineOpSurface("surfRd", kUnified /*kGlisur*/,kDielectric_metal,kPolished, 0.);
645 1 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "EFFICIENCY", kNbins, dPckov, efficMet);
646 1 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "REFLECTIVITY", kNbins, dPckov, aReflMet);
647 1 : TVirtualMC::GetMC()->SetBorderSurface("0TOPborder", "0TOP",1,"0TOO",1, "surfRd");
648 :
649 :
650 1 : }
651 :
652 : //-------------------------------------------------------------------
653 : void AliT0v1::Init()
654 : {
655 : // Initialises version 0 of the Forward Multiplicity Detector
656 : //
657 2 : AliT0::Init();
658 1 : fIdSens1=TVirtualMC::GetMC()->VolId("0REG");
659 :
660 3 : AliDebug(1,Form("%s: *** T0 version 1 initialized ***\n",ClassName()));
661 1 : }
662 :
663 : //-------------------------------------------------------------------
664 :
665 : void AliT0v1::StepManager()
666 : {
667 : //
668 : // Called for every step in the T0 Detector
669 : //
670 159600 : Int_t id,copy,copy1;
671 : static Float_t hits[6];
672 : static Int_t vol[2];
673 79800 : TLorentzVector pos;
674 79800 : TLorentzVector mom;
675 :
676 : // TClonesArray &lhits = *fHits;
677 :
678 256430 : if(!TVirtualMC::GetMC()->IsTrackAlive()) return; // particle has disappeared
679 :
680 125540 : id=TVirtualMC::GetMC()->CurrentVolID(copy);
681 :
682 : // Check the sensetive volume
683 62770 : if(id==fIdSens1 ) {
684 38697 : if(TVirtualMC::GetMC()->IsTrackEntering()) {
685 25760 : TVirtualMC::GetMC()->CurrentVolOffID(2,copy);
686 12880 : vol[1]=copy;
687 25760 : TVirtualMC::GetMC()->CurrentVolOffID(3,copy1);
688 12880 : vol[0]=copy1;
689 25760 : TVirtualMC::GetMC()->TrackPosition(pos);
690 25760 : hits[0] = pos[0];
691 25760 : hits[1] = pos[1];
692 25760 : hits[2] = pos[2];
693 27818 : if(pos[2]<0) vol[0] = 2;
694 36582 : if(pos[2]>=0) vol[0] = 1;
695 :
696 38640 : Float_t etot=TVirtualMC::GetMC()->Etot();
697 12880 : hits[3]=etot;
698 25760 : Int_t iPart= TVirtualMC::GetMC()->TrackPid();
699 25760 : Int_t partID=TVirtualMC::GetMC()->IdFromPDG(iPart);
700 12880 : hits[4]=partID;
701 38640 : Float_t ttime=TVirtualMC::GetMC()->TrackTime();
702 12880 : hits[5]=ttime*1e12;
703 38640 : if (TVirtualMC::GetMC()->TrackPid() == 50000050) // If particles is photon then ...
704 : {
705 25722 : if(RegisterPhotoE(vol[1]-1,hits[3])) {
706 5488 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
707 : // Create a track reference at the exit of photocatode
708 : }
709 : }
710 :
711 : //charge particle
712 38640 : if ( TVirtualMC::GetMC()->TrackCharge() )
713 16 : AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kT0);
714 :
715 : /*
716 : printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
717 : gAlice->GetMCApp()->GetCurrentTrackNumber(),
718 : TVirtualMC::GetMC()->IsTrackAlive(),
719 : TVirtualMC::GetMC()->IsTrackDisappeared(),
720 : TVirtualMC::GetMC()->IsTrackEntering(),
721 : TVirtualMC::GetMC()->IsTrackExiting(),
722 : TVirtualMC::GetMC()->IsTrackInside(),
723 : TVirtualMC::GetMC()->IsTrackOut(),
724 : TVirtualMC::GetMC()->IsTrackStop(),
725 : TVirtualMC::GetMC()->IsNewTrack());
726 : */
727 12880 : }// trck entering
728 : } //sensitive
729 :
730 142570 : }
731 :
732 :
733 :
734 : //------------------------------------------------------------------------
735 : Bool_t AliT0v1::RegisterPhotoE(Int_t ipmt,Double_t energy)
736 : {
737 :
738 :
739 : // Float_t hc=197.326960*1.e6; //mev*nm
740 : Double_t hc=1.973*1.e-6; //gev*nm
741 25722 : Float_t lambda=hc/energy;
742 12861 : Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
743 12861 : Double_t p = gRandom->Rndm();
744 :
745 12861 : if (p > eff)
746 10117 : return kFALSE;
747 :
748 2744 : return kTRUE;
749 12861 : }
750 :
751 : //----------------------------------------------------------------------------
752 :
753 :
754 :
755 :
756 :
757 :
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