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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
45#include "AliLog.h"
46#include "AliMagF.h"
47#include "AliRun.h"
48
49#include "AliT0hit.h"
50#include "AliT0v1.h"
51#include "AliT0Parameters.h"
52
53#include "AliMC.h"
54#include "AliCDBLocal.h"
55#include "AliCDBStorage.h"
56#include "AliCDBManager.h"
57#include "AliCDBEntry.h"
58
59ClassImp(AliT0v1)
60
61
62//--------------------------------------------------------------------
63AliT0v1::AliT0v1(): AliT0(),
64 fIdSens1(0),
65 fEffPMT(0x0)
66
67{
68 //
69 // Standart constructor for T0 Detector version 0
70}
71//--------------------------------------------------------------------
72AliT0v1::AliT0v1(const char *name, const char *title):
73 AliT0(name,title),
74 fIdSens1(0),
75 fEffPMT(0x0)
76
77{
78 //
79 // Standart constructor for T0 Detector version 0
80 //
81 fIshunt = 2;
82 AliT0Parameters* param = AliT0Parameters::Instance();
83 for (Int_t i=0; i<24; i++){
84 TGraph* grEff = param ->GetPMTeff(i);
85 fEffPMT.AddAtAndExpand(grEff,i);
86 }
87}
88//_____________________________________________________________________________
89
90AliT0v1::~AliT0v1()
91{
92 // desctructor
93}
94
95//-------------------------------------------------------------------------
96void AliT0v1::CreateGeometry()
97{
98 //
99 // Create the geometry of T0 Detector version 0
100 //
101 // begin Html
102 /*
103 <img src="gif/AliT0v0.gif">
104 */
105 //
106
107
108 Int_t *idtmed = fIdtmed->GetArray();
109 /*
110 AliT0Parameters* param = AliT0Parameters::Instance();
111 param->Init();
112 Float_t zdetC = param->GetZposition(0);
113 Float_t zdetA = param->GetZposition(1);
114 */
115 Float_t zdetC = 69.7;
116 Float_t zdetA = 373.;
117
118 Int_t is;
119 Int_t idrotm[999];
120 Double_t x,y,z;
121 //C T0 mother volume
122 Float_t pstartR[18]={0., 360., 5.,
123 -6.8, 4.25, 10., //-76.5+0.00+69.7
124 // -0.75 , 4.45, 10., // -76.5+6.05+69.7
125 // 1.25 , 4.45, 10., //-76.5+8.05+69.7
126 -0.75 , 4.5, 10., // -76.5+6.05+69.7
127 1.25 , 4.5, 10., //-76.5+8.05+69.7
128 1.25 , 5.1, 10, //-76.5+8.05+69.7
129 6.8 , 5.1, 10.}; //-62.9+0.00+69.7
130
131 Float_t pstart[3]={4., 12.5,6.8};
132 Float_t pinstart[3]={0.,1.45,6.5};
133 Float_t ppmt[3]={0.,1.4,3.5};
134 Float_t ptop[3]={0.,1.,1.0};
135 Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
136 Float_t ptopout[3]={1.,1.01, 1.}; //metal air around raiator for photos reflection
137 Float_t pbot[3]={0.6,1.2,0.1};
138 Float_t pglass[3]={1.2,1.3,2.};
139 Float_t pcer[3]={0.9,1.1,1.35};
140 Float_t psteel[3]={0.9,1.1,0.15};
141 Float_t psupport1[3] = {4.51,4.52,4.0};//C kozhuh vnutri
142 Float_t psupport2[3] = {9.5,9.6,4.0};// snaruzhi C
143 Float_t psupport3[3] = {4.52,9.5, 0.05};//kryshki C
144 Float_t psupport5[3] = {1.44,1.45,6.5}; // stakanchik dlai feu C
145 Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika Al
146 Float_t psupport7[3] = {1.44,1.45,0.4}; //kolechko snaruzhu stakanchika Al
147
148 // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
149 AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
150 Float_t ppcon[70];
151 ppcon[0] = 0;
152 ppcon[1] = 360;
153 ppcon[2] = 13;
154// 1:
155 ppcon[3] = 7.2;
156 ppcon[4] = 4.4;
157 ppcon[5] = 4.5;
158// 2
159 ppcon[6] = 8.2;
160 ppcon[7] = 4.4;
161 ppcon[8] = 4.5;
162// 3
163 ppcon[9] = 8.2;
164 ppcon[10] = 4.4;
165 ppcon[11] = 5.1;
166
167// 4
168
169 ppcon[12] = 8.3;
170 ppcon[13] = 4.4;
171 ppcon[14] = 5.1;
172// 5
173
174 ppcon[15] = 8.3;
175 ppcon[16] = 4.9;
176 ppcon[17] = 5.1;
177
178// 6
179 ppcon[18] = 15.;
180 ppcon[19] = 4.9;
181 ppcon[20] = 5.1;
182
183// 7
184 ppcon[21] = 15.;
185 ppcon[22] = 3.15 ;
186 ppcon[23] = 5.1;
187
188/// 8
189 ppcon[24] = 15.01;
190 ppcon[25] = 3.15;
191 ppcon[26] = 5.1;
192
193/// 9
194 ppcon[27] = 15.01;
195 ppcon[28] = 3.15;
196 ppcon[29] = 3.25;
197
198
199/// 9
200 ppcon[30] = 19.71;
201 ppcon[31] = 3.15;
202 ppcon[32] = 3.25;
203// 10
204 ppcon[33] = 19.8;
205 ppcon[34] = 3.15;
206 ppcon[35] = 3.25;
207 // 11
208 ppcon[36] = 19.8;
209 ppcon[37] = 3.15;
210 ppcon[38] = 7.6;
211
212 // 14
213
214 ppcon[39] = 19.99;
215 ppcon[40] = 3.15;
216 ppcon[41] = 7.6;
217
218
219 gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
220 z = -zdetC;
221 gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
222
223//-------------------------------------------------------------------
224 // T0 volume
225 //-------------------------------------------------------------------
226
227
228 gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
229 gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
230 // gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
231
232//T0 interior
233 gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
234 gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
235
236 gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
237 gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi C
238 gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai C
239 gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai C
240 // gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
241 gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu C
242 gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika Al
243 gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
244
245
246
247 //non-absorber side support and T0A !!!!!!!!
248
249 TGeoPcon * supPgon = new TGeoPcon("0supPgon",0.,360.,4);
250 supPgon->DefineSection(0, 0, 4.1, 5.5);
251 supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
252 supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
253 supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
254 TGeoTranslation *trPgon = new TGeoTranslation("0trPgon",0,0,0);
255 trPgon->RegisterYourself();
256
257 TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("0STL");//empty segment
258 TGeoVolume *ins = gGeoManager->GetVolume("0INS");
259
260 new TGeoTube("0HOLE", 0, 1.51, 6.5);
261 TGeoTranslation *tr [12];
262 Double_t angle = 2 * TMath::Pi() / 12;
263 Char_t nameTr[40];
264 for (Int_t itr=0; itr<12; itr++) {
265 sprintf (nameTr,"0TR%i",itr+1);
266 x = 6.5 * TMath::Sin(itr * angle);
267 y = 6.5 * TMath::Cos(itr * angle);
268 tr[itr] = new TGeoTranslation(nameTr,x,y,6.5);
269 tr[itr]->RegisterYourself();
270 stlin->AddNode(ins,itr+13,tr[itr]);
271 }
272 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)");
273
274 TGeoMedium *medal = gGeoManager->GetMedium("T0_Aluminium$");
275 TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
276 stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
277
278 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
279 alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
280
281 // T0A finished
282
283 //T0C
284// first ring: 12 units of Scintillator+PMT+divider
285 Float_t theta = (180 / TMath::Pi()) * TMath::ATan(6.6 / zdetC);
286 Float_t phi[3];
287 for (is=0; is<12; is++)
288 {
289
290 x = 6.6 * TMath::Sin(is * angle);
291 y = 6.6 * TMath::Cos(is * angle);
292
293 phi[0] = -30 * is;
294 phi[1] = 90 - is * 30;
295 phi[2] = 90 - is * 30;
296 for (Int_t j = 0; j < 3; j++)
297 if (phi[j] < 0) phi[j] += 360;
298
299 AliMatrix (idrotm[902 + is], 90., phi[0],
300 90. + theta, phi[1],
301 theta, phi[2]);
302 z=-pstart[2]+pinstart[2]+0.3;
303 gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
304 }
305
306 x=0;
307 y=0;
308 // z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
309 z=-pinstart[2]+ppmt[2]+0.08; //+psupport6[2];
310 gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
311 // PMT
312
313 // Entry window (glass)
314 gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
315 z=-ppmt[2]+ptop[2];
316 gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
317 //"metal" air volume to simulate reclection
318 gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3);
319 gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
320
321 //Fotokatod
322 gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
323 z = -ppmt[2] + 2 * ptop[2] + preg[2];
324 gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
325 // Bottom glass
326 gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
327 z=ppmt[2]-pbot[2];
328 gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
329 // Side cylinder glass
330 gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
331 z=ppmt[2]-pglass[2];
332 gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
333 //PMT electrodes support structure
334 gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
335 gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
336 z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
337 gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
338 z +=psteel[2]+pcer[2];
339 gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
340
341 //Support absorber (C) side
342 z=-pstart[2]+psupport1[2];// 0.05; //0.1;
343 gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
344 gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
345 z=-pstart[2]+psupport3[2];// - 0.1;
346 gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
347 z=-pstart[2]+2.*psupport1[2];//+0.1;
348 gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
349 gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
350 z=-pinstart[2]+psupport6[2]; //-0.1;
351 gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
352
353 z=pinstart[2]-psupport7[2];
354 gMC->Gspos("0SU8",1,"0SU6",0,0,z,0,"ONLY"); //Al kolechko
355
356
357 Float_t par[3];
358 par[0]=4.4;
359 par[1]=4.5;
360 par[2]=0.5;
361 gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
362 z=ppcon[3]+par[2];
363 gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
364 z += par[2];
365 par[0]=4.4;
366 par[1]=5.1;
367 par[2]=0.05;
368 gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
369 z += par[2];
370 gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
371 z=z+par[2];
372 par[0]=4.9;
373 par[1]=5.0;
374 par[2]=6.7/2;
375 gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
376 z += par[2];
377 gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
378 z += par[2];
379
380 par[0]=3.15;
381 par[1]=4.9;
382 par[2]=0.01/2;
383
384 gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
385
386 z += par[2];
387 // z -= par[2];
388 gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
389 z=z+par[2];
390 par[0]=3.15;
391 par[1]=3.16;
392 par[2]=4.7/2;
393 gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
394 z += par[2];
395 gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
396 z=z+par[2];
397 par[0]=3.16; // eta chast' prikruchena k absorberu
398 par[1]=7.4;
399 par[2]=0.01;
400 gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
401 // z += par[2];
402 z = ppcon[39] - par[2];
403 gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
404 par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
405 par[1]=7.4;
406 par[2]=0.01;
407 gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
408 gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"MANY");
409
410
411
412
413}
414//------------------------------------------------------------------------
415void AliT0v1::AddAlignableVolumes() const
416{
417 //
418 // Create entries for alignable volumes associating the symbolic volume
419 // name with the corresponding volume path. Needs to be syncronized with
420 // eventual changes in the geometry.
421 //
422
423 // TString volPath;
424 // TString symName, sn;
425
426
427
428
429 TString volPath;
430 TString symName, sn;
431
432 TString vpA = "/ALIC_1/0STL_1/0INS_";
433 TString vpC = "/ALIC_1/0STR_1/0INS_";
434 TString vpInside = "/0PMT_1/0TOP_1";
435 TString vpAalign = "/ALIC_1/0STL_1";
436 TString vpCalign = "/ALIC_1/0STR_1";
437
438 for (Int_t imod=0; imod<26; imod++)
439 {
440 if (imod < 24)
441 {
442 if (imod < 12)
443 { volPath = vpC; sn="T0/C/PMT";}
444 else
445 { volPath = vpA; sn="T0/A/PMT";}
446 volPath += imod+1;
447 volPath += vpInside;
448 symName = sn;
449 symName += imod+1;
450 }
451 else if (imod == 24)
452 {volPath = vpCalign; symName="/ALIC_1/0STR_1";}
453 else
454 {volPath = vpAalign; symName="/ALIC_1/0STL_1";}
455
456 AliDebug(2,"--------------------------------------------");
457 AliDebug(2,Form("Alignable object %d", imod));
458 AliDebug(2,Form("volPath=%s\n",volPath.Data()));
459 AliDebug(2,Form("symName=%s\n",symName.Data()));
460 AliDebug(2,"--------------------------------------------");
461 if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
462 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
463symName.Data(),volPath.Data()));
464 }
465 /*
466 for (Int_t imod=0; imod<24; imod++)
467 {
468 if (imod < 12)
469 { volPath = vpC; sn="T0/C/PMT";}
470 else
471 { volPath = vpA; sn="T0/A/PMT";}
472 volPath += imod+1;
473 volPath += vpInside;
474 symName = sn;
475 symName += imod+1;
476
477
478 AliDebug(2,"--------------------------------------------");
479 AliDebug(2,Form("Alignable object %d", imod));
480 AliDebug(2,Form("volPath=%s\n",volPath.Data()));
481 AliDebug(2,Form("symName=%s\n",symName.Data()));
482 AliDebug(2,"--------------------------------------------");
483 if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
484 AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
485symName.Data(),volPath.Data()));
486 }
487 */
488}
489//------------------------------------------------------------------------
490void AliT0v1::CreateMaterials()
491{
492 Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
493 Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
494 // Float_t a,z,d,radl,absl,buf[1];
495 // Int_t nbuf;
496// AIR
497
498 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
499 Float_t zAir[4]={6.,7.,8.,18.};
500 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
501 Float_t dAir = 1.20479E-3;
502
503// Scintillator CH
504 Float_t ascin[2]={1.01,12.01};
505 Float_t zscin[2]={1,6};
506 Float_t wscin[2]={1,1};
507 Float_t denscin=1.03;
508//Lucite C(CH3)CO2CH3
509 Float_t alucite[3]={1.01,12.01,15.999};
510 Float_t zlucite[3]={1,6,8};
511 Float_t wlucite[3]={8,5,2};
512 Float_t denlucite=1.16;
513 // PMT glass SiO2
514 Float_t aglass[2]={28.0855,15.9994};
515 Float_t zglass[2]={14.,8.};
516 Float_t wglass[2]={1.,2.};
517 Float_t dglass=2.65;
518// Ceramic 97.2% Al2O3 , 2.8% SiO2
519 // Float_t wcer[2]={0.972,0.028};
520 Float_t aCeramic[2] = { 26.981539,15.9994 };
521 Float_t zCeramic[2] = { 13.,8. };
522 Float_t wCeramic[2] = { 2.,3. };
523 Float_t denscer = 3.6;
524
525// Brass 80% Cu, 20% Zn
526 Float_t abrass[2] = {63.546,65.39};
527 Float_t zbrass[2] = {29,30};
528 Float_t wbrass[2] = {0.8,0.2};
529 Float_t denbrass=8.96;
530
531//Ribber C6H12S
532 Float_t aribber[3] = {12.,1.,32.};
533 Float_t zribber[3] = {6.,1.,16.};
534 Float_t wribber[3] = {6.,12.,1.};
535 Float_t denribber=0.8;
536// Support inside
537 Float_t asupport[2] = {12.,1.};
538 Float_t zsupport[2] = {6.,1.};
539 Float_t wsupport[2] = {1.,1.};
540 Float_t densupport=0.1;
541
542//*** Definition Of avaible T0 materials ***
543 AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
544 AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
545 AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
546 AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
547 AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
548
549 AliMixture( 3, "Ceramic $",aCeramic, zCeramic, denscer, -2, wCeramic);
550 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
551 /*
552 char namate[21]="";
553
554 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
555 acer[0]=a;
556
557 zcer[0]=z;
558 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
559 acer[1]=a;
560 zcer[1]=z;
561 AliMixture( 11, "Ceramic $", acer, zcer, denscer, 2, wcer);
562 */
563 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
564 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
565 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
566 AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
567 AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
568 AliMixture( 21, "PMT Optical glass $",aglass,zglass,dglass,-2,wglass);
569 AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
570 AliMixture(22, "T0 Opt Air$", aAir, zAir, dAir,4,wAir);
571 AliMixture(23, "T0 Opt Air Next$", aAir, zAir, dAir,4,wAir);
572
573 AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
574 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
575 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
576 AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
577 AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
578 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
579 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
580 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
581 AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
582 AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
583 AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
584 AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
585 AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
586 AliMedium(17, "T0 OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
587 AliMedium(18, "T0 OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
588 AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
589
590 AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
591
592
593}
594//---------------------------------------------------------------------
595void AliT0v1::DrawDetector()
596{
597//
598// Draw a shaded view of the Forward multiplicity detector version 0
599//
600
601 //Set ALIC mother transparent
602 gMC->Gsatt("ALIC","SEEN",0);
603 //
604 //Set volumes visible
605 // gMC->Gsatt("0STR","SEEN",0);
606 // gMC->Gsatt("0INS","SEEN",0);
607 // gMC->Gsatt("0PMT","SEEN",1);
608 // gMC->Gsatt("0DIV","SEEN",1);
609 //
610 gMC->Gdopt("hide","off");
611 gMC->Gdopt("shad","on");
612 gMC->SetClipBox(".");
613 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
614 gMC->DefaultRange();
615 gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
616 //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
617 gMC->Gdhead(1111,"T-Zero detector");
618 gMC->Gdopt("hide","off");
619}
620
621//-------------------------------------------------------------------
622void AliT0v1::DefineOpticalProperties()
623{
624// Optical properties definition.
625 Int_t *idtmed = fIdtmed->GetArray();
626// Definition Cherenkov parameters
627 int i;
628 const Int_t kNbins=31;
629
630 Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
631
632 // quartz 20mm
633 Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
634 25.9, 25.3, 24.9, 24.5, 23.7,
635 23.2, 22.8, 22.4, 21.8, 21.3,
636 22.8, 22.1, 21.7, 21.2, 20.5,
637 19.9, 19.3, 18.7, 18.0, 17.1,
638 16.3, 15.3, 14.3, 14.3 };
639
640 Float_t aPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
641 4.48, 4.58, 4.69, 4.81, 4.93,
642 5.05, 5.19, 5.33, 5.48, 5.63,
643 5.8, 5.97, 6.16, 6.36, 6.57,
644 6.8, 7.04, 7.3, 7.58, 7.89,
645 8.22, 8.57, 8.97, 9.39 };
646 /*
647 Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
648 0.21, 0.22, 0.23, 0.24, 0.26,
649 0.27, 0.29, 0.30, 0.29, 0.29,
650 0.28, 0.28, 0.27, 0.26, 0.25,
651 0.25, 0.23, 0.20, 0.19, 0.17,
652 0.17, 0.17, 0.2, 0.23};
653 */
654 // Float_t aAbsSiO2[kNbins]; //quartz 30mm
655 for(i=0;i<kNbins;i++)
656 {
657 aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
658 rindexAir[i]=0;
659 rindexSiO2[i]=1.458; //refractive index for qwarts
660 rindexCathodeNext[i]=0;
661 efficAll[i]=1.;
662
663 // aAbsSiO2[i]=28.5; //quartz 30mm
664 absorAir[i]=0.3;
665 absorbCathodeNext[i]=0;
666
667 }
668
669
670 gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
671 // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
672 gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
673 gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
674 gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
675}
676
677//-------------------------------------------------------------------
678void AliT0v1::Init()
679{
680// Initialises version 0 of the Forward Multiplicity Detector
681//
682 AliT0::Init();
683 fIdSens1=gMC->VolId("0REG");
684
685 AliDebug(1,Form("%s: *** T0 version 1 initialized ***\n",ClassName()));
686}
687
688//-------------------------------------------------------------------
689
690void AliT0v1::StepManager()
691{
692 //
693 // Called for every step in the T0 Detector
694 //
695 Int_t id,copy,copy1;
696 static Float_t hits[6];
697 static Int_t vol[2];
698 TLorentzVector pos;
699
700 // TClonesArray &lhits = *fHits;
701
702 if(!gMC->IsTrackAlive()) return; // particle has disappeared
703
704
705 // If particles is photon then ...
706
707 if (gMC->TrackPid() == 50000050)
708 {
709 id=gMC->CurrentVolID(copy);
710
711
712 // Check the sensetive volume
713 if(id==fIdSens1 ) {
714 if(gMC->IsTrackEntering()) {
715 gMC->CurrentVolOffID(2,copy);
716 vol[1]=copy;
717 gMC->CurrentVolOffID(3,copy1);
718 vol[0]=copy1;
719 gMC->TrackPosition(pos);
720 hits[0] = pos[0];
721 hits[1] = pos[1];
722 hits[2] = pos[2];
723 if(pos[2]<0) vol[0]=2;
724 if(pos[2]>=0) vol[0]=1;
725
726 Float_t etot=gMC->Etot();
727 hits[3]=etot;
728 Int_t iPart= gMC->TrackPid();
729 Int_t partID=gMC->IdFromPDG(iPart);
730 hits[4]=partID;
731 Float_t ttime=gMC->TrackTime();
732 hits[5]=ttime*1e12;
733 if(RegisterPhotoE(vol[1]-1,hits[3]))
734 AddHit(fIshunt,vol,hits);
735
736 }
737 // cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
738
739 /*
740 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
741 gAlice->GetMCApp()->GetCurrentTrackNumber(),
742 gMC->IsTrackAlive(),
743 gMC->IsTrackDisappeared(),
744 gMC->IsTrackEntering(),
745 gMC->IsTrackExiting(),
746 gMC->IsTrackInside(),
747 gMC->IsTrackOut(),
748 gMC->IsTrackStop(),
749 gMC->IsNewTrack());
750 */
751 } //sensitive
752 } //photon
753}
754
755
756
757//------------------------------------------------------------------------
758Bool_t AliT0v1::RegisterPhotoE(Int_t ipmt,Double_t energy)
759{
760
761
762 // Float_t hc=197.326960*1.e6; //mev*nm
763 Double_t hc=1.973*1.e-6; //gev*nm
764 Float_t lambda=hc/energy;
765 Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
766 Double_t p = gRandom->Rndm();
767
768 if (p > eff)
769 return kFALSE;
770
771 return kTRUE;
772}
773
774//----------------------------------------------------------------------------
775
776
777
778
779
780