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dc7ca31d 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 <TGeometry.h>
35#include <TLorentzVector.h>
36#include <TMath.h>
37#include <TNode.h>
38#include <TTUBE.h>
39#include <TVirtualMC.h>
40#include "TGeoManager.h"
41#include "TGeoPgon.h"
42#include "TGeoTube.h"
43#include "TGeoCompositeShape.h"
44#include <TGraph.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
60ClassImp(AliT0v1)
61
62//--------------------------------------------------------------------
63AliT0v1::AliT0v1(const char *name, const char *title):
64 AliT0(name,title),
65 fIdSens1(0)
66{
67 //
68 // Standart constructor for T0 Detector version 0
69 //
70 fIshunt = 2;
71 AliT0Parameters* param = AliT0Parameters::Instance();
72 for (Int_t i=0; i<24; i++){
73 TGraph* grEff = param ->GetPMTeff(i);
74 fEffPMT.AddAtAndExpand(grEff,i);
75 }
76}
77//_____________________________________________________________________________
78
79AliT0v1::~AliT0v1()
80{
81 // desctructor
82}
83
84//-------------------------------------------------------------------------
85void AliT0v1::CreateGeometry()
86{
87 //
88 // Create the geometry of T0 Detector version 0
89 //
90 // begin Html
91 /*
92 <img src="gif/AliT0v0.gif">
93 */
94 //
95
96
97 Int_t *idtmed = fIdtmed->GetArray();
98 /*
99 AliT0Parameters* param = AliT0Parameters::Instance();
100 param->Init();
101 Float_t zdetC = param->GetZposition(0);
102 Float_t zdetA = param->GetZposition(1);
103 */
104 Float_t zdetC = 69.7;
105 Float_t zdetA = 373.;
106
107 Int_t is;
108 Int_t idrotm[999];
109 Float_t x,y,z;
110 //C T0 mother volume
111 Float_t pstartR[18]={0., 360., 5.,
112 -6.8, 4.25, 10., //-76.5+0.00+69.7
113 -0.75 , 4.5, 10., // -76.5+6.05+69.7
114 1.25 , 4.5, 10., //-76.5+8.05+69.7
115 1.25 , 5.1, 10., //-76.5+8.05+69.7
116 6.8 , 5.1, 10.}; //-62.9+0.00+69.7
117
118 Float_t pstart[3]={4., 12.5,6.8};
119 Float_t pinstart[3]={0.,1.6,6.5};
120 Float_t ppmt[3]={0.,1.5,3.5};
121 Float_t ptop[3]={0.,1.,1.0};
122 Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
123 Float_t ptopout[3]={1.,1.01, 1.}; //metal air around raiator for photos reflection
124 Float_t pbot[3]={0.6,1.2,0.1};
125 Float_t pglass[3]={1.2,1.3,2.};
126 Float_t pcer[3]={0.9,1.1,1.35};
127 Float_t psteel[3]={0.9,1.1,0.15};
128 Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
129 Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi C
130 Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki C
131 Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu C
132 Float_t psupport6[3] = {0,1.4,0.04}; //kryshechka stakanchika Al
133 Float_t psupport7[3] = {1.5,1.6,0.4}; //kolechko snaruzhu stakanchika Al
134
135 // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
136 AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
137 Float_t ppcon[70];
138 ppcon[0] = 0;
139 ppcon[1] = 360;
140 ppcon[2] = 13;
141// 1:
142 ppcon[3] = 7.2;
143 ppcon[4] = 4.4;
144 ppcon[5] = 4.5;
145// 2
146 ppcon[6] = 8.2;
147 ppcon[7] = 4.4;
148 ppcon[8] = 4.5;
149// 3
150 ppcon[9] = 8.2;
151 ppcon[10] = 4.4;
152 ppcon[11] = 5.1;
153
154// 4
155
156 ppcon[12] = 8.3;
157 ppcon[13] = 4.4;
158 ppcon[14] = 5.1;
159// 5
160
161 ppcon[15] = 8.3;
162 ppcon[16] = 4.9;
163 ppcon[17] = 5.1;
164
165// 6
166 ppcon[18] = 15.;
167 ppcon[19] = 4.9;
168 ppcon[20] = 5.1;
169
170// 7
171 ppcon[21] = 15.;
172 ppcon[22] = 3.15 ;
173 ppcon[23] = 5.1;
174
175/// 8
176 ppcon[24] = 15.01;
177 ppcon[25] = 3.15;
178 ppcon[26] = 5.1;
179
180/// 9
181 ppcon[27] = 15.01;
182 ppcon[28] = 3.15;
183 ppcon[29] = 3.25;
184
185
186/// 9
187 ppcon[30] = 19.71;
188 ppcon[31] = 3.15;
189 ppcon[32] = 3.25;
190// 10
191 ppcon[33] = 19.8;
192 ppcon[34] = 3.15;
193 ppcon[35] = 3.25;
194 // 11
195 ppcon[36] = 19.8;
196 ppcon[37] = 3.15;
197 ppcon[38] = 7.6;
198
199 // 14
200
201 ppcon[39] = 19.91;
202 ppcon[40] = 3.15;
203 ppcon[41] = 7.6;
204
205
206 gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
207 z = -zdetC;
208 gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
209
210//-------------------------------------------------------------------
211 // T0 volume
212 //-------------------------------------------------------------------
213
214
215 gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
216 gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
217 gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetC+pstartR[3],idrotm[901],"ONLY");
218 // gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetA+pstart[2],0,"ONLY");
219
220//T0 interior
221 gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
222 gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
223
224 gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
225 gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi C
226 gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai C
227 gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai C
228 // gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
229 gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu C
230 gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika Al
231 gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
232
233
234
235 //non-absorber side support and T0A !!!!!!!!
236
237 TGeoPgon * supPgon = new TGeoPgon("supPgon",0.,360.,360,4);
238 supPgon->DefineSection(0, 0, 4.1, 5.5);
239 supPgon->DefineSection(1, 10.5 , 4.1, 5.5);
240 supPgon->DefineSection(2, 10.5 , 4.1, 4.9);
241 supPgon->DefineSection(3, 12.5 , 4.1, 4.9);
242 TGeoTranslation *trPgon = new TGeoTranslation("trPgon",0,0,0);
243 trPgon->RegisterYourself();
244
245 TGeoVolumeAssembly * stlin = new TGeoVolumeAssembly("OSTL");//empty segment
246 TGeoVolume *ins = gGeoManager->GetVolume("0INS");
247
248 Double_t phimin = TMath::ACos((16-4.8)/16.) * (180 / TMath::Pi()) ;
249 // TGeoTubeSeg *hole = new TGeoTubeSeg("hole", 0, 1.6, 0, -phimin+90, phimin+90);
250 TGeoTube*hole = new TGeoTube("hole", 0, 1.61, 6.5);
251 TGeoTranslation *tr [12];
252 Float_t angle = 2 * TMath::Pi() / 12;
253 Char_t nameTr[4];
254 for (Int_t itr=0; itr<12; itr++) {
255 sprintf (nameTr,"tr%i",itr+1);
256 x = 6.5 * TMath::Sin(itr * angle);
257 y = 6.5 * TMath::Cos(itr * angle);
258 tr[itr] = new TGeoTranslation(nameTr,x,y,6.5);
259 tr[itr]->RegisterYourself();
260 stlin->AddNode(ins,itr+13,tr[itr]);
261 }
262 TGeoCompositeShape *supsh = new TGeoCompositeShape("supsh","supPgon:trPgon-(hole:tr1+hole:tr2+hole:tr3+hole:tr4+hole:tr5+hole:tr6+hole:tr7+hole:tr8+hole:tr9+hole:tr10+hole:tr11+hole:tr12)");
263
264 TGeoMedium *medal = gGeoManager->GetMedium("T0_Aluminium$");
265 TGeoVolume *supA = new TGeoVolume("0SUA",supsh,medal);
266 stlin->AddNode(supA,1,new TGeoTranslation(0,0,0));
267
268 TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
269 alice->AddNode(stlin,1,new TGeoTranslation(0,0, zdetA ));
270
271 // T0A finished
272
273 //T0C
274// first ring: 12 units of Scintillator+PMT+divider
275 Float_t theta = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetC);
276 Float_t phi[3];
277 for (is=0; is<12; is++)
278 {
279
280 x = 6.5 * TMath::Sin(is * angle);
281 y = 6.5 * TMath::Cos(is * angle);
282
283 phi[0] = -30 * is;
284 phi[1] = 90 - is * 30;
285 phi[2] = 90 - is * 30;
286 for (Int_t j = 0; j < 3; j++)
287 if (phi[j] < 0) phi[j] += 360;
288
289 AliMatrix (idrotm[902 + is], 90., phi[0],
290 90. + theta, phi[1],
291 theta, phi[2]);
292 z=-pstart[2]+pinstart[2]+0.2;
293 gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
294 }
295
296 x=0;
297 y=0;
298 z=-pinstart[2]+ppmt[2]+psupport6[2]*2;
299 gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
300 // PMT
301
302 // Entry window (glass)
303 gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
304 z=-ppmt[2]+ptop[2];
305 gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
306 //"metal" air volume to simulate reclection
307 gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3);
308 gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
309
310 //Fotokatod
311 gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
312 z = -ppmt[2] + 2 * ptop[2] + preg[2];
313 gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
314 // Bottom glass
315 gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
316 z=ppmt[2]-pbot[2];
317 gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
318 // Side cylinder glass
319 gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
320 z=ppmt[2]-pglass[2];
321 gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
322 //PMT electrodes support structure
323 gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
324 gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
325 z=-ppmt[2]+2*ptop[2]+0.3 + pcer[2];
326 gMC->Gspos("0CER",1,"0PMT",0,0,z,0,"ONLY");
327 z +=psteel[2]+pcer[2];
328 gMC->Gspos("0STE",1,"0PMT",0,0,z,0,"ONLY");
329
330 //Support absorber (C) side
331 z=-pstart[2]+psupport1[2]+0.1;
332 gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
333 gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
334 z=-pstart[2]+psupport3[2]+0.1;
335 gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
336 z=-pstart[2]+2.*psupport1[2]-0.05;//+0.1;
337 gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
338 gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
339 z=-pinstart[2]+psupport6[2];
340 gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
341
342 z=pinstart[2]-psupport7[2];
343 gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
344
345
346 Float_t par[3];
347 par[0]=4.4;
348 par[1]=4.5;
349 par[2]=0.5;
350 gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
351 z=ppcon[3]+par[2];
352 gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
353 z += par[2];
354 par[0]=4.4;
355 par[1]=5.1;
356 par[2]=0.05;
357 gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
358 z += par[2];
359 gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
360 z=z+par[2];
361 par[0]=4.9;
362 par[1]=5.0;
363 par[2]=6.7/2;
364 gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
365 z += par[2];
366 gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
367 z += par[2];
368
369 par[0]=3.15;
370 par[1]=4.9;
371 par[2]=0.1/2;
372 gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
373
374 z += par[2];
375 cout<<" z 0SA1 "<<z<<endl;
376 gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
377 z=z+par[2];
378 par[0]=3.15;
379 par[1]=3.16;
380 par[2]=4.7/2;
381 cout<<" z 0SA2 "<<z<<endl;
382 gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
383 z += par[2];
384 gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
385 z=z+par[2];
386 par[0]=3.16; // eta chast' prikruchena k absorberu
387 par[1]=7.5;
388 par[2]=0.1;
389 cout<<" z 0SA23"<<z<<endl;
390 gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
391 z += par[2];
392 gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
393 par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
394 par[1]=7.5;
395 par[2]=0.01;
396 cout<<" z 0SN2 "<<z<<endl;
397 gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
398 gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
399
400
401
402
403}
404//------------------------------------------------------------------------
405void AliT0v1::AddAlignableVolumes() const
406{
407 //
408 // Create entries for alignable volumes associating the symbolic volume
409 // name with the corresponding volume path. Needs to be syncronized with
410 // eventual changes in the geometry.
411 //
412
413 TString volPath;
414 TString symName, sn;
415
416 TString vpA = "/ALIC_1/0STL_1/0INS_";
417 TString vpC = "/ALIC_1/0STR_1/0INS_";
418 TString vpInside = "/0PMT_1/0TOP_1";
419
420
421 for (Int_t imod=0; imod<24; imod++)
422 {
423 if (imod < 12)
424 {volPath = vpC; sn="T0/C/PMT";}
425 else
426 {volPath = vpA; sn="T0/A/PMT";}
427 volPath += imod+1;
428 volPath += vpInside;
429
430 symName = sn;
431 symName += imod+1;
432
433 AliDebug(2,"--------------------------------------------");
434 AliDebug(2,Form("Alignable object %d", imod));
435 AliDebug(2,Form("volPath=%s\n",volPath.Data()));
436 AliDebug(2,Form("symName=%s\n",symName.Data()));
437 AliDebug(2,"--------------------------------------------");
438 gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data());
439 // if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
440 // AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
441 // symName.Data(),volPath.Data()));
442
443 }
444}
445//------------------------------------------------------------------------
446void AliT0v1::CreateMaterials()
447{
448 Int_t isxfld = gAlice->Field()->Integ();
449 Float_t sxmgmx = gAlice->Field()->Max();
450 // Float_t a,z,d,radl,absl,buf[1];
451 // Int_t nbuf;
452 Int_t *idtmed = fIdtmed->GetArray();
453
454// AIR
455
456 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
457 Float_t zAir[4]={6.,7.,8.,18.};
458 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
459 Float_t dAir = 1.20479E-3;
460
461// Scintillator CH
462 Float_t ascin[2]={1.01,12.01};
463 Float_t zscin[2]={1,6};
464 Float_t wscin[2]={1,1};
465 Float_t denscin=1.03;
466//Lucite C(CH3)CO2CH3
467 Float_t alucite[3]={1.01,12.01,15.999};
468 Float_t zlucite[3]={1,6,8};
469 Float_t wlucite[3]={8,5,2};
470 Float_t denlucite=1.16;
471 // PMT glass SiO2
472 Float_t aglass[2]={28.0855,15.9994};
473 Float_t zglass[2]={14.,8.};
474 Float_t wglass[2]={1.,2.};
475 Float_t dglass=2.65;
476// Ceramic 97.2% Al2O3 , 2.8% SiO2
477 // Float_t wcer[2]={0.972,0.028};
478 Float_t aCeramic[2] = { 26.981539,15.9994 };
479 Float_t zCeramic[2] = { 13.,8. };
480 Float_t wCeramic[2] = { 2.,3. };
481 Float_t denscer = 3.6;
482
483// Brass 80% Cu, 20% Zn
484 Float_t abrass[2] = {63.546,65.39};
485 Float_t zbrass[2] = {29,30};
486 Float_t wbrass[2] = {0.8,0.2};
487 Float_t denbrass=8.96;
488
489//Ribber C6H12S
490 Float_t aribber[3] = {12.,1.,32.};
491 Float_t zribber[3] = {6.,1.,16.};
492 Float_t wribber[3] = {6.,12.,1.};
493 Float_t denribber=0.8;
494// Support inside
495 Float_t asupport[2] = {12.,1.};
496 Float_t zsupport[2] = {6.,1.};
497 Float_t wsupport[2] = {1.,1.};
498 Float_t densupport=0.1;
499
500//*** Definition Of avaible T0 materials ***
501 AliMaterial(0, "Steel$", 55.850,26.,7.87,1.76,999);
502 AliMaterial(1, "Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
503 AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
504 AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
505 AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
506
507 AliMixture( 3, "Ceramic $",aCeramic, zCeramic, denscer, -2, wCeramic);
508 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
509 /*
510 char namate[21]="";
511
512 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
513 acer[0]=a;
514
515 zcer[0]=z;
516 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
517 acer[1]=a;
518 zcer[1]=z;
519 AliMixture( 11, "Ceramic $", acer, zcer, denscer, 2, wcer);
520 */
521 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
522 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
523 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
524 AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
525 AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
526 AliMixture( 21, "PMT Optical glass $",aglass,zglass,dglass,-2,wglass);
527 AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
528 AliMixture(22, "T0 Opt Air$", aAir, zAir, dAir,4,wAir);
529 AliMixture(23, "T0 Opt Air Next$", aAir, zAir, dAir,4,wAir);
530
531 AliMedium(1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
532 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
533 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
534 AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
535 AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
536 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
537 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
538 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
539 AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
540 AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
541 AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
542 AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
543 AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
544 AliMedium(17, "T0 OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
545 AliMedium(18, "T0 OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
546 AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
547
548
549// Definition Cherenkov parameters
550 int i;
551 const Int_t kNbins=31;
552
553 Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
554
555 // quartz 20mm
556 Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
557 25.9, 25.3, 24.9, 24.5, 23.7,
558 23.2, 22.8, 22.4, 21.8, 21.3,
559 22.8, 22.1, 21.7, 21.2, 20.5,
560 19.9, 19.3, 18.7, 18.0, 17.1,
561 16.3, 15.3, 14.3, 14.3 };
562
563 Float_t aPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
564 4.48, 4.58, 4.69, 4.81, 4.93,
565 5.05, 5.19, 5.33, 5.48, 5.63,
566 5.8, 5.97, 6.16, 6.36, 6.57,
567 6.8, 7.04, 7.3, 7.58, 7.89,
568 8.22, 8.57, 8.97, 9.39 };
569 /*
570 Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
571 0.21, 0.22, 0.23, 0.24, 0.26,
572 0.27, 0.29, 0.30, 0.29, 0.29,
573 0.28, 0.28, 0.27, 0.26, 0.25,
574 0.25, 0.23, 0.20, 0.19, 0.17,
575 0.17, 0.17, 0.2, 0.23};
576 */
577 // Float_t aAbsSiO2[kNbins]; //quartz 30mm
578 for(i=0;i<kNbins;i++)
579 {
580 aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
581 rindexAir[i]=0;
582 rindexSiO2[i]=1.458; //refractive index for qwarts
583 rindexCathodeNext[i]=0;
584 efficAll[i]=1.;
585
586 // aAbsSiO2[i]=28.5; //quartz 30mm
587 absorAir[i]=0.3;
588 absorbCathodeNext[i]=0;
589
590 }
591
592
593 gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
594 // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
595 gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
596 gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
597 gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
598
599 AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
600
601
602}
603//---------------------------------------------------------------------
604void AliT0v1::DrawDetector()
605{
606//
607// Draw a shaded view of the Forward multiplicity detector version 0
608//
609
610 //Set ALIC mother transparent
611 gMC->Gsatt("ALIC","SEEN",0);
612 //
613 //Set volumes visible
614 // gMC->Gsatt("0STR","SEEN",0);
615 // gMC->Gsatt("0INS","SEEN",0);
616 // gMC->Gsatt("0PMT","SEEN",1);
617 // gMC->Gsatt("0DIV","SEEN",1);
618 //
619 gMC->Gdopt("hide","off");
620 gMC->Gdopt("shad","on");
621 gMC->SetClipBox(".");
622 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
623 gMC->DefaultRange();
624 gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
625 //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
626 gMC->Gdhead(1111,"T-Zero detector");
627 gMC->Gdopt("hide","off");
628}
629
630//-------------------------------------------------------------------
631void AliT0v1::Init()
632{
633// Initialises version 0 of the Forward Multiplicity Detector
634//
635//Int_t *idtmed = gAlice->Idtmed();
636 AliT0::Init();
637 fIdSens1=gMC->VolId("0REG");
638
639 AliDebug(1,Form("%s: *** T0 version 1 initialized ***\n",ClassName()));
640
641}
642
643//-------------------------------------------------------------------
644
645void AliT0v1::StepManager()
646{
647 //
648 // Called for every step in the T0 Detector
649 //
650 Int_t id,copy,copy1;
651 static Float_t hits[6];
652 static Int_t vol[2];
653 TLorentzVector pos;
654
655 // TClonesArray &lhits = *fHits;
656
657 if(!gMC->IsTrackAlive()) return; // particle has disappeared
658
659
660 // If particles is photon then ...
661
662 if (gMC->TrackPid() == 50000050)
663 {
664 id=gMC->CurrentVolID(copy);
665
666
667 // Check the sensetive volume
668 if(id==fIdSens1 ) {
669 if(gMC->IsTrackEntering()) {
670 gMC->CurrentVolOffID(2,copy);
671 vol[1]=copy;
672 gMC->CurrentVolOffID(3,copy1);
673 vol[0]=copy1;
674 gMC->TrackPosition(pos);
675 hits[0] = pos[0];
676 hits[1] = pos[1];
677 hits[2] = pos[2];
678 if(pos[2]<0) vol[0]=2;
679 if(pos[2]>=0) vol[0]=1;
680
681 Float_t etot=gMC->Etot();
682 hits[3]=etot;
683 Int_t iPart= gMC->TrackPid();
684 Int_t partID=gMC->IdFromPDG(iPart);
685 hits[4]=partID;
686 Float_t ttime=gMC->TrackTime();
687 hits[5]=ttime*1e12;
688 if(RegisterPhotoE(vol[1]-1,hits[3]))
689 AddHit(fIshunt,vol,hits);
690
691 }
692 // cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
693
694 /*
695 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
696 gAlice->GetMCApp()->GetCurrentTrackNumber(),
697 gMC->IsTrackAlive(),
698 gMC->IsTrackDisappeared(),
699 gMC->IsTrackEntering(),
700 gMC->IsTrackExiting(),
701 gMC->IsTrackInside(),
702 gMC->IsTrackOut(),
703 gMC->IsTrackStop(),
704 gMC->IsNewTrack());
705 */
706 } //sensitive
707 } //photon
708}
709
710
711
712//------------------------------------------------------------------------
713Bool_t AliT0v1::RegisterPhotoE(Int_t ipmt,Double_t energy)
714{
715
716
717 // Float_t hc=197.326960*1.e6; //mev*nm
718 Double_t hc=1.973*1.e-6; //gev*nm
719 Float_t lambda=hc/energy;
720 Float_t eff = ((TGraph*) fEffPMT.At(ipmt))->Eval(lambda);
721 Double_t p = gRandom->Rndm();
722
723 if (p > eff)
724 return kFALSE;
725
726 return kTRUE;
727}
728
729//----------------------------------------------------------------------------
730
731
732
733
734
735