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 **************************************************************************/
17 /////////////////////////////////////////////////////////////////////
19 // START ( T-zero) detector version 1 //
23 <img src="gif/AliSTARTv1Class.gif">
28 //////////////////////////////////////////////////////////////////////
30 #include <Riostream.h>
33 #include <TGeometry.h>
34 #include <TLorentzVector.h>
38 #include <TVirtualMC.h>
43 #include "AliSTARThit.h"
44 #include "AliSTARTv1.h"
49 //--------------------------------------------------------------------
50 AliSTARTv1::AliSTARTv1(const char *name, const char *title):
54 // Standart constructor for START Detector version 0
59 //_____________________________________________________________________________
61 AliSTARTv1::~AliSTARTv1()
66 //-------------------------------------------------------------------------
67 void AliSTARTv1::CreateGeometry()
70 // Create the geometry of START Detector version 0
74 <img src="gif/AliSTARTv0.gif">
80 Int_t *idtmed = fIdtmed->GetArray();
86 Float_t pstartR[18]={0., 360., 5.,
87 -76.5+0.00+69.7, 4.25, 10.,
88 -76.5+6.05+69.7, 4.5, 10.,
89 -76.5+8.05+69.7, 4.5, 10.,
90 -76.5+8.05+69.7, 5.1, 10.,
91 -62.9+0.00+69.7, 5.1, 10.};
93 Float_t pstart[3]={4.3, 12.,6.8};
94 Float_t pinstart[3]={0.,1.6,6.5};
95 Float_t ppmt[3]={0.,1.5,3.5};
96 Float_t ptop[3]={0.,1.,1.5};
97 Float_t preg[3]={0., 1.0, 0.005}; //photcathode dobavil bogdanov
98 Float_t ptopout[3]={1.,1.01,1.5};
99 // Float_t pregafter[3]={0.,1.0,0.005};
100 Float_t pdivider[3]={0.,1.2,1.75};
101 Float_t pdiv2[3]={0.,1.2,1.25};
102 Float_t pdiv1[3]={0.6,1.2,0.5};
103 Float_t pbot[3]={0.6,1.2,0.1};
104 Float_t pglass[3]={1.2,1.3,2.};
105 Float_t pcer[3]={0.9,1.1,0.09};
106 Float_t psteel[3]={0.9,1.1,0.01};
107 Float_t ppins[3]={0.6,1.2,0.014};
108 Float_t phole[3]={0.6,1.2,0.015};
109 Float_t pknob[3]={0.5,0.6,0.4};
110 Float_t pknob_vac[3]={0.,0.5,0.4};
111 Float_t pknob_bot[3]={0.,0.6,0.05};
112 Float_t pribber[3] = {0.,1.2,2.413/2.};
113 Float_t presist[3] = {0.,1.2,0.087/2.};
114 Float_t psupport1[3] = {4.51,4.6,4.0};//C kozhuh vnutri
115 Float_t psupport2[3] = {9.4,9.5,4.0};// snaruzhi C
116 Float_t psupport3[3] = {4.51,9.5,0.05};//kryshki C
117 Float_t psupport5[3] = {1.44,1.5,6.5}; // stakanchik dlai feu C
118 Float_t psupport6[3] = {0,1.5,0.05}; //kryshechka stakanchika Al
119 Float_t psupport7[3] = {1.5,1.6,0.6}; //kolechko snaruzhu stakanchika Al
121 // Mother Volume katushka dlia krepezha vokrug truby k Absorbru
122 AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
132 ppcon[6] = ppcon[3]+1.;
142 ppcon[12] = ppcon[9]+0.1;
147 ppcon[15] = ppcon[12];
152 ppcon[18] = ppcon[15]+7.05;
157 ppcon[21] = ppcon[18];
162 ppcon[24] = ppcon[21]+0.01;
167 ppcon[27] = ppcon[24];
172 ppcon[30] = ppcon[27]+4.5;
177 ppcon[33] = ppcon[30];
182 ppcon[36] = ppcon[33];
187 ppcon[39] = ppcon[33]+0.4;
192 // ppcon[39] = ppcon[36];
196 gMC->Gsvolu("0SUP", "PCON", idtmed[kAir], ppcon,42);
198 gMC->Gspos("0SUP",1,"ALIC",0.,0.,z,idrotm[901],"ONLY");
201 Float_t zdetRight=69.7,zdetLeft=350;
202 //-------------------------------------------------------------------
204 //-------------------------------------------------------------------
207 gMC->Gsvolu("0STR","PCON",idtmed[kAir],pstartR,18);
208 gMC->Gsvolu("0STL","TUBE",idtmed[kAir],pstart,3);
209 gMC->Gspos("0STR",1,"ALIC",0.,0.,-zdetRight-pstart[2],idrotm[901],"ONLY");
210 gMC->Gspos("0STL",1,"ALIC",0.,0.,zdetLeft+pstart[2],0,"ONLY");
213 gMC->Gsvolu("0INS","TUBE",idtmed[kAir],pinstart,3);
214 gMC->Gsvolu("0PMT","TUBE",idtmed[kAir],ppmt,3);
216 gMC->Gsvolu("0DIV","TUBE",idtmed[kVac],pdivider,3);
217 gMC->Gsvolu("0SU1","TUBE",idtmed[kC],psupport1,3);//C kozhuh vnutri
218 gMC->Gsvolu("0SU2","TUBE",idtmed[kC],psupport2,3);// snaruzhi C
219 gMC->Gsvolu("0SU3","TUBE",idtmed[kC],psupport3,3);//kryshka perednaiai C
220 gMC->Gsvolu("0SU4","TUBE",idtmed[kC],psupport3,3);//kryshka zadnaiai C
221 // gMC->Gsvolu("0SU5","TUBE",idtmed[kAir],psupport4,3);// dyrki dlia feu v zadnej kryshke Air
222 gMC->Gsvolu("0SU6","TUBE",idtmed[kC],psupport5,3);// stakanchik dlai feu C
223 gMC->Gsvolu("0SU7","TUBE",idtmed[kAl],psupport6,3);//kryshechka stakanchika Al
224 gMC->Gsvolu("0SU8","TUBE",idtmed[kAl],psupport7,3);//kolechko snaruzhu stakanchika Al
226 // first ring: 12 units of Scintillator+PMT+divider
227 Float_t theta = (180 / TMath::Pi()) * TMath::ATan(6.5 / zdetRight);
228 printf(" theta %f", theta);
229 Float_t angle = 2 * TMath::Pi() / 12;
232 for (is=0; is<12; is++)
235 x = 6.5 * TMath::Sin(is * angle);
236 y = 6.5 * TMath::Cos(is * angle);
239 phi[1] = 90 - is * 30;
240 phi[2] = 90 - is * 30;
241 for (Int_t j = 0; j < 3; j++)
242 if (phi[j] < 0) phi[j] += 360;
244 AliMatrix (idrotm[902 + is], 90., phi[0],
247 z=-pstart[2]+pinstart[2]+0.2;
248 gMC->Gspos ("0INS", is + 1, "0STR", x, y, z, idrotm[902 + is], "ONLY");
249 gMC->Gspos ("0INS", is + 13, "0STL", x, y, z, 0, "ONLY");
251 x = 9.1 * TMath::Sin(angle/2+is * angle);
252 y = 9.1 * TMath::Cos(angle/2+is * angle);
254 gMC->Gspos ("0INS", is + 25, "0STL", x, y, z, 0, "ONLY");
261 // z=-pinstart[2]+ppmt[2]+2.*psupport6[2]+0.1;
262 z=-pinstart[2]+ppmt[2];
263 gMC->Gspos("0PMT",1,"0INS",x,y,z,0,"ONLY");
264 // z=z+pdivider[2]+ppmt[2];
265 // gMC->Gspos("0DIV",1,"0INS",x,y,z,0,"ONLY");
269 // Entry window (glass)
270 gMC->Gsvolu("0TOP","TUBE",idtmed[kOpGlass],ptop,3); //glass
271 // gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
273 gMC->Gspos("0TOP",1,"0PMT",0,0,z,0,"ONLY");
274 //metal volume to simulate reclection
275 gMC->Gsvolu("0TOO","TUBE",idtmed[kOpAir],ptopout,3); //glass
276 // gMC->Gsvolu("0TOP","TUBE",idtmed[12],ptop,3); //lucite
277 gMC->Gspos("0TOO",1,"0PMT",0,0,z,0,"ONLY");
280 gMC->Gsvolu ("0REG", "TUBE", idtmed[kOpGlassCathode], preg, 3);
281 z = -ppmt[2] + 2 * ptop[2] + preg[2];
282 gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
283 //optical volume special to detect photons in cathode
284 // gMC->Gsvolu ("0RE1", "TUBE", idtmed[kOpAirNext], pregafter, 3);
285 // z = -ppmt[2] + 2 * ptop[2] + 2*preg[2] + pregafter[2];
286 // gMC->Gspos ("0RE1", 1, "0PMT", 0, 0, z, 0, "ONLY");
289 gMC->Gsvolu("0BOT","TUBE",idtmed[kGlass],pbot,3);
291 if(fDebug) printf("%s: Z bottom %f\n",ClassName(),z);
292 gMC->Gspos("0BOT",1,"0PMT",0,0,z,0,"ONLY");
293 // Side cylinder glass
294 gMC->Gsvolu("0OUT","TUBE",idtmed[kGlass],pglass,3);
296 gMC->Gspos("0OUT",1,"0PMT",0,0,z,0,"ONLY");
297 //PMT electrodes support structure
298 gMC->Gsvolu("0CER","TUBE",idtmed[kCer],pcer,3);
299 gMC->Gsvolu("0STE","TUBE",idtmed[kSteel],psteel,3);
300 z=-ppmt[2]+2*ptop[2]+0.3;;
301 for (is=1; is<=15; is++)
303 z=z+psteel[2]+pcer[2];
304 gMC->Gspos("0CER",is,"0PMT",0,0,z,0,"ONLY");
305 z=z+psteel[2]+pcer[2];
306 gMC->Gspos("0STE",is,"0PMT",0,0,z,0,"ONLY");
310 // Knob at the bottom of PMT baloon
312 gMC->Gsvolu("0NB","TUBE",idtmed[6],pknob,3);
313 z=-pdivider[2]+pknob[2];
314 gMC->Gspos("0NB",1,"0DIV",0,0,z,0,"ONLY");
315 gMC->Gsvolu("0KB","TUBE",idtmed[kGlass],pknob_bot,3);
316 z=-pdivider[2]+2*pknob[2]+pknob_bot[2];
317 gMC->Gspos("0KB",1,"0DIV ",0,0,z,0,"ONLY");
318 gMC->Gsvolu("0VAC","TUBE",idtmed[kVac],pknob_vac,3);
319 z=-pdivider[2]+pknob_vac[2];
320 gMC->Gspos("0VAC",1,"0DIV",0,0,z,0,"ONLY");
321 //Steel pins + pin holes
322 gMC->Gsvolu("0PIN","TUBE",idtmed[kSteel],ppins,3);
323 z=-pdivider[2]+ppins[2];
324 gMC->Gspos("0PIN",1,"0DIV",0,0,z,0,"ONLY");
325 gMC->Gsvolu("0HOL","TUBE",idtmed[kBrass],phole,3);
326 z=-pdivider[2]+2*ppins[2]+phole[2];
327 gMC->Gspos("0HOL",1,"0DIV",0,0,z,0,"ONLY");
330 gMC->Gsvolu("0V1","TUBE",idtmed[kCer],pdiv1,3);
331 z=-pdivider[2]+pdiv1[2];
332 gMC->Gspos("0V1",1,"0DIV",0,0,z,0,"ONLY");
334 gMC->Gsvolu("0V2","TUBE",idtmed[kAir],pdiv2,3);
335 z=pdivider[2]-pdiv2[2];
336 gMC->Gspos("0V2",1,"0DIV",0,0,z,0,"ONLY");
337 gMC->Gsvolu("0RS","TUBE",idtmed[kCer],presist,3);
338 z=-pdiv2[2]+presist[2];
339 gMC->Gspos("0RS",1,"0V2",0,0,z,0,"ONLY");
340 gMC->Gsvolu("0RB","TUBE",idtmed[kRibber],pribber,3);
341 z=pdiv2[2]-pribber[2];
342 gMC->Gspos("0RB",1,"0V2",0,0,z,0,"ONLY");
346 z=-pstart[2]+psupport1[2]+0.1;
347 gMC->Gspos("0SU1",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh snaruzhi
348 gMC->Gspos("0SU2",1,"0STR",0,0,z,0,"ONLY"); //C kozhuh vnutri
349 z=-pstart[2]+psupport3[2]+0.1;
350 gMC->Gspos("0SU3",1,"0STR",0,0,z,0,"ONLY"); //peredniaia kryshka
351 z=-pstart[2]+2.*psupport1[2]+0.1;
352 gMC->Gspos("0SU4",1,"0STR",0,0,z,0,"MANY"); //zadnaiai kryshka
353 gMC->Gspos("0SU6",1,"0INS",0,0,0,0,"ONLY");//C stakanchik dlia feu
354 z=-pinstart[2]+psupport6[2];
355 gMC->Gspos("0SU7",1,"0INS",0,0,z,0,"ONLY"); //Al kryshechka
357 z=pinstart[2]-psupport7[2];
358 gMC->Gspos("0SU8",1,"0INS",0,0,z,0,"ONLY"); //Al kolechko
365 gMC->Gsvolu("0SC0","TUBE",idtmed[kC],par,3);
367 gMC->Gspos("0SC0",1,"0SUP",0,0,z,0,"ONLY");
372 gMC->Gsvolu("0SC1","TUBE",idtmed[kC],par,3);
374 gMC->Gspos("0SC1",1,"0SUP",0,0,z,0,"ONLY");
379 gMC->Gsvolu("0SC2","TUBE",idtmed[kC],par,3);
381 gMC->Gspos("0SC2",1,"0SUP",0,0,z,0,"ONLY");
387 gMC->Gsvolu("0SA1","TUBE",idtmed[kAl],par,3);
390 gMC->Gspos("0SA1",1,"0SUP",0,0,z,0,"ONLY");
395 gMC->Gsvolu("0SA2","TUBE",idtmed[kAl],par,3);
397 gMC->Gspos("0SA2",1,"0SUP",0,0,z,0,"ONLY");
399 par[0]=3.16; // eta chast' prikruchena k absorberu
402 gMC->Gsvolu("0SA3","TUBE",idtmed[kAl],par,3);
404 gMC->Gspos("0SA3",1,"0SUP",0,0,z,0,"ONLY");
405 par[0]=3.16; // gvozdi eta chast' prikruchena k absorberu
408 gMC->Gsvolu("0SN2","TUBE",idtmed[kSteel],par,3);
409 gMC->Gspos("0SN2",1,"0SUP",0,0,z,0,"ONLY");
413 //------------------------------------------------------------------------
414 void AliSTARTv1::CreateMaterials()
416 Int_t isxfld = gAlice->Field()->Integ();
417 Float_t sxmgmx = gAlice->Field()->Max();
418 // Float_t a,z,d,radl,absl,buf[1];
420 Int_t *idtmed = fIdtmed->GetArray();
424 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
425 Float_t zAir[4]={6.,7.,8.,18.};
426 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
427 Float_t dAir = 1.20479E-3;
430 Float_t ascin[2]={1.01,12.01};
431 Float_t zscin[2]={1,6};
432 Float_t wscin[2]={1,1};
433 Float_t denscin=1.03;
434 //Lucite C(CH3)CO2CH3
435 Float_t alucite[3]={1.01,12.01,15.999};
436 Float_t zlucite[3]={1,6,8};
437 Float_t wlucite[3]={8,5,2};
438 Float_t denlucite=1.16;
440 Float_t aglass[2]={28.0855,15.9994};
441 Float_t zglass[2]={14.,8.};
442 Float_t wglass[2]={1.,2.};
444 // Ceramic 97.2% Al2O3 , 2.8% SiO2
445 // Float_t wcer[2]={0.972,0.028};
446 Float_t aCeramic[2] = { 26.981539,15.9994 };
447 Float_t zCeramic[2] = { 13.,8. };
448 Float_t wCeramic[2] = { 2.,3. };
449 Float_t denscer = 3.6;
451 // Brass 80% Cu, 20% Zn
452 Float_t abrass[2] = {63.546,65.39};
453 Float_t zbrass[2] = {29,30};
454 Float_t wbrass[2] = {0.8,0.2};
455 Float_t denbrass=8.96;
458 Float_t aribber[3] = {12.,1.,32.};
459 Float_t zribber[3] = {6.,1.,16.};
460 Float_t wribber[3] = {6.,12.,1.};
461 Float_t denribber=0.8;
463 Float_t asupport[2] = {12.,1.};
464 Float_t zsupport[2] = {6.,1.};
465 Float_t wsupport[2] = {1.,1.};
466 Float_t densupport=0.1;
468 //*** Definition Of avaible START materials ***
469 AliMaterial(0, "START Steel$", 55.850,26.,7.87,1.76,999);
470 AliMaterial(1, "START Vacuum$", 1.e-16,1.e-16,1.e-16,1.e16,999);
471 AliMixture(2, "START Air$", aAir, zAir, dAir,4,wAir);
472 AliMaterial(10, "CarbonPlastic$", 12.01, 6.0, 2.26, 18.8,999);
473 AliMaterial(11, "Aliminium$", 26.98, 13.0, 2.7, 8.9,999);
475 AliMixture( 3, "Ceramic $",aCeramic, zCeramic, denscer, -2, wCeramic);
476 AliMixture( 4, "PMT glass $",aglass,zglass,dglass,-2,wglass);
480 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
484 gMC->Gfmate((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
487 AliMixture( 11, "Ceramic $", acer, zcer, denscer, 2, wcer);
489 AliMixture( 5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
490 AliMixture( 6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
491 AliMixture( 7, "Ribber $",aribber,zribber,denribber,-3,wribber);
492 AliMixture( 8, "Lucite$",alucite,zlucite,denlucite,-3,wlucite);
493 AliMixture( 9, "Penoplast$",asupport,zsupport,densupport,-2,wsupport);
494 AliMixture( 21, "PMT Optical glass $",aglass,zglass,dglass,-2,wglass);
495 AliMixture( 24, "PMT Optical glass cathode $",aglass,zglass,dglass,-2,wglass);
496 AliMixture(22, "START Opt Air$", aAir, zAir, dAir,4,wAir);
497 AliMixture(23, "START Opt Air Next$", aAir, zAir, dAir,4,wAir);
499 AliMedium(1, "START Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
500 AliMedium(2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
501 AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
502 AliMedium(4, "Ceramic$", 3, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
503 AliMedium(6, "Glass$", 4, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
504 AliMedium(8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
505 AliMedium(9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
506 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
507 AliMedium(12, "Lucite$", 8, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
508 AliMedium(13, "CarbonPlastic$", 10, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
509 AliMedium(14, "PenoPlast$", 9, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
510 AliMedium(15, "Aluminium$", 11, 0, isxfld, sxmgmx, 10., .01, 1., .003, .003);
511 AliMedium(16, "OpticalGlass$", 21, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
512 AliMedium(17, "START OpAir$", 22, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
513 AliMedium(18, "START OpAirNext$", 23, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
514 AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
517 // Definition Cherenkov parameters
519 const Int_t kNbins=31;
521 Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
524 Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
525 25.9, 25.3, 24.9, 24.5, 23.7,
526 23.2, 22.8, 22.4, 21.8, 21.3,
527 22.8, 22.1, 21.7, 21.2, 20.5,
528 19.9, 19.3, 18.7, 18.0, 17.1,
529 16.3, 15.3, 14.3, 14.3 };
531 Float_t aPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
532 4.48, 4.58, 4.69, 4.81, 4.93,
533 5.05, 5.19, 5.33, 5.48, 5.63,
534 5.8, 5.97, 6.16, 6.36, 6.57,
535 6.8, 7.04, 7.3, 7.58, 7.89,
536 8.22, 8.57, 8.97, 9.39 };
538 Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
539 0.21, 0.22, 0.23, 0.24, 0.26,
540 0.27, 0.29, 0.30, 0.29, 0.29,
541 0.28, 0.28, 0.27, 0.26, 0.25,
542 0.25, 0.23, 0.20, 0.19, 0.17,
543 0.17, 0.17, 0.2, 0.23};
545 // Float_t aAbsSiO2[kNbins]; //quartz 30mm
546 for(i=0;i<kNbins;i++)
548 aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
550 rindexSiO2[i]=1.458; //refractive index for qwarts
551 rindexCathodeNext[i]=0;
554 // aAbsSiO2[i]=28.5; //quartz 30mm
556 absorbCathodeNext[i]=0;
561 gMC->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
562 // gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
563 gMC->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
564 gMC->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
565 gMC->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
567 if(fDebug) cout<<ClassName()<<": ++++++++++++++Medium set++++++++++"<<endl;
571 //---------------------------------------------------------------------
572 void AliSTARTv1::DrawDetector()
575 // Draw a shaded view of the Forward multiplicity detector version 0
578 //Set ALIC mother transparent
579 gMC->Gsatt("ALIC","SEEN",0);
581 //Set volumes visible
582 // gMC->Gsatt("0STR","SEEN",0);
583 // gMC->Gsatt("0INS","SEEN",0);
584 // gMC->Gsatt("0PMT","SEEN",1);
585 // gMC->Gsatt("0DIV","SEEN",1);
587 gMC->Gdopt("hide","off");
588 gMC->Gdopt("shad","on");
589 gMC->SetClipBox(".");
590 gMC->SetClipBox("*",0,1000,-1000,1000,-1000,1000);
592 gMC->Gdraw("alic",90,0,0,-35,9.5,.6,0.6);
593 //gMC->Gdraw("alic",0,0,0,10,9.5,.8,0.8); //other side view
594 gMC->Gdhead(1111,"T-Zero detector");
595 gMC->Gdopt("hide","off");
598 //-------------------------------------------------------------------
599 void AliSTARTv1::Init()
601 // Initialises version 0 of the Forward Multiplicity Detector
603 //Int_t *idtmed = gAlice->Idtmed();
605 fIdSens1=gMC->VolId("0REG");
607 AliDebug(1,Form("%s: *** START version 1 initialized ***\n",ClassName()));
611 //-------------------------------------------------------------------
613 void AliSTARTv1::StepManager()
616 // Called for every step in the START Detector
619 static Float_t hits[6];
623 // TClonesArray &lhits = *fHits;
625 if(!gMC->IsTrackAlive()) return; // particle has disappeared
627 // If particles is photon then ...
629 if (gMC->TrackPid() == 50000050)
631 id=gMC->CurrentVolID(copy);
634 // Check the sensetive volume
636 if(gMC->IsTrackEntering()) {
637 gMC->CurrentVolOffID(2,copy);
639 gMC->CurrentVolOffID(3,copy1);
641 gMC->TrackPosition(pos);
645 if(pos[2]<0) vol[0]=2;
646 if(pos[2]>=0) vol[0]=1;
648 Float_t etot=gMC->Etot();
650 Int_t iPart= gMC->TrackPid();
651 Int_t partID=gMC->IdFromPDG(iPart);
653 Float_t ttime=gMC->TrackTime();
655 AddHit(fIshunt,vol,hits);
656 // cout<< gAlice->GetMCApp()->GetCurrentTrackNumber()<<" hit added "<<endl;
659 printf("track(%i) alive(%i) disap(%i) enter(%i) exit(%i) inside(%i) out(%i) stop(%i) new(%i) \n",
660 gAlice->GetMCApp()->GetCurrentTrackNumber(),
662 gMC->IsTrackDisappeared(),
663 gMC->IsTrackEntering(),
664 gMC->IsTrackExiting(),
665 gMC->IsTrackInside(),