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[u/mrichter/AliRoot.git] / T0 / AliT0v2.cxx
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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 0 //
21//
22//Begin Html
23/*
24<img src="gif/AliT0v2Class.gif">
25*/
26//End Html
27// //
28// //
29//////////////////////////////////////////////////////////////////////
30
31#define RIGHT_ARRAY 1
32#define LEFT_ARRAY 2
33
34#include <Riostream.h>
35#include <stdlib.h>
36
37#include <TGeometry.h>
38#include <TLorentzVector.h>
39#include <TMath.h>
40#include <TNode.h>
41#include <TTUBE.h>
42#include <TVirtualMC.h>
43
44#include "AliMagF.h"
45#include "AliRun.h"
46#include "AliT0hit.h"
47#include "AliT0v2.h"
48#include "AliMC.h"
49//#include "AliT0hitPhoton.h"
50//#include "TGeant3.h"
51
52ClassImp(AliT0v2)
53
54
55//////////////////////////////////////////////////////////////////////
56// Standart constructor for T0 Detector version 2
57//////////////////////////////////////////////////////////////////////
58AliT0v2::AliT0v2(const char *name, const char *title):
59 AliT0(name,title)
60{
61 fIdSens1 = 0;
62// setBufferSize(128000);
63}
64
65
66//////////////////////////////////////////////////////////////////////
67// Create the geometry of T0 Detector version 2
68//////////////////////////////////////////////////////////////////////
69void AliT0v2::CreateGeometry()
70{
71 /*
72 <img src="gif/AliT0v2.gif">
73 */
74
75 Int_t *idtmed;
76 Int_t idrotm[999];
77 Int_t i, j;
78 Float_t x, y, z;
79 Float_t zRight;
80 Float_t zLeft;
81 Float_t phi[3];
82 Float_t theta;
83 Double_t angel;
84
85 Float_t pstart[3] = {4.5, 10.7, 5.3};
86 Float_t pinstart[3] = {0., 1.31, 5.25};
87 Float_t ppmt[3] = {0., 1.31, 3.5};
88 Float_t ptop[3] = {0., 1.3, 1.5};
89// Float_t preg[3] = {0., 1.3, 0.005};
90 Float_t preg[3] = {0., 0.875, 0.005};
91 Float_t pdes[3] = {0.875, 1.3, 0.005};
92
93
94 zRight = 75.;
95 zLeft = 350.;
96 theta = (180 / TMath::Pi()) * TMath::ATan(6.5 / zRight);
97 angel = 2 * TMath::Pi() / 12;
98 idtmed = fIdtmed->GetArray();
99
100
101 AliMatrix (idrotm[901], 90., 0., 90., 90., 180., 0.);
102
103 gMC->Gsvolu ("0RST", "TUBE", idtmed[3], pstart, 3);
104 gMC->Gsvolu ("0LST", "TUBE", idtmed[3], pstart, 3);
105 gMC->Gspos ("0RST", 1, "ALIC", 0., 0., -zRight, 0, "ONLY");
106 gMC->Gspos ("0LST", 1, "ALIC", 0., 0., zLeft, idrotm[901], "ONLY");
107
108// 12 unit: PMT + divider
109 gMC->Gsvolu("0INS", "TUBE", idtmed[3], pinstart, 3);
110 z = 0;
111 for (i = 0; i < 12; i++)
112 {
113 x = 6.5 * TMath::Sin(i * angel);
114 y = 6.5 * TMath::Cos(i * angel);
115
116 phi[0] = -30 * i;
117 phi[1] = 90 - i * 30;
118 phi[2] = 90 - i * 30;
119 for (j = 0; j < 3; j++)
120 if (phi[j] < 0) phi[j] += 360;
121
122 AliMatrix (idrotm[902 + i], 90., phi[0],
123 90. + theta, phi[1],
124 theta, phi[2]);
125
126 gMC->Gspos ("0INS", i + 1, "0RST", x, y, z, idrotm[902 + i], "ONLY");
127 gMC->Gspos ("0INS", i + 13, "0LST", x, y, z, 0, "ONLY");
128 }
129
130 gMC->Gsvolu ("0PMT", "TUBE", idtmed[1], ppmt, 3);
131 x = y = 0;
132 z = -pinstart[2] + ppmt[2];
133 gMC->Gspos ("0PMT", 1, "0INS", x, y, z, 0, "ONLY");
134
135// PMT
136 // Entry window (glass)
137 gMC->Gsvolu ("0TOP", "TUBE", idtmed[6], ptop, 3);
138 z = -ppmt[2] + ptop[2];
139 gMC->Gspos ("0TOP", 1, "0PMT", 0, 0, z, 0, "ONLY");
140
141 gMC->Gsvolu ("0REG", "TUBE", idtmed[6], preg, 3);
142 z = -ppmt[2] + 2 * ptop[2] + preg[2];
143 gMC->Gspos ("0REG", 1, "0PMT", 0, 0, z, 0, "ONLY");
144
145 gMC->Gsvolu ("0DES", "TUBE", idtmed[6], pdes, 3);
146 z = -ppmt[2] + 2 * ptop[2] + preg[2];
147 gMC->Gspos ("0DES", 1, "0PMT", 0, 0, z, 0, "ONLY");
148}
149
150
151//////////////////////////////////////////////////////////////////////
152// Definition of avaible T0 materials
153//////////////////////////////////////////////////////////////////////
154void AliT0v2::CreateMaterials()
155{
156 Int_t isxfld = gAlice->Field()->Integ();
157 Float_t sxmgmx = gAlice->Field()->Max();
158
159 Float_t a, z, d, radl, absl, buf[1];
160 Int_t nbuf;
161
162// Scintillator CH
163 Float_t ascin[2] = {1.01, 12.01};
164 Float_t zscin[2] = {1., 6.};
165 Float_t wscin[2] = {1., 1.};
166 Float_t denscin = 1.03;
167
168// PMT glass SiO2
169 Float_t aglass[2] = {28.0855, 15.9994};
170 Float_t zglass[2] = {14., 8.};
171 Float_t wglass[2] = { 1., 2.};
172 Float_t dglass = 2.65;
173
174// Ceramic 97.2% Al2O3 , 2.8% SiO2
175 Float_t acer[2], zcer[2];
176 Float_t wcer[2] = { 0.972, 0.028};
177 Float_t aal2o3[2] = {26.981539, 15.9994 };
178 Float_t zal2o3[2] = {13., 8.};
179 Float_t wal2o3[2] = { 2., 3.};
180 Float_t denscer = 3.6;
181
182// Brass 80% Cu, 20% Zn
183 Float_t abrass[2] = {63.546, 65.39};
184 Float_t zbrass[2] = {29., 30.};
185 Float_t wbrass[2] = { 0.8, 0.2};
186 Float_t denbrass = 8.96;
187
188//Ribber C6H12S
189 Float_t aribber[3] = {12., 1., 32.};
190 Float_t zribber[3] = { 6., 1., 16.};
191 Float_t wribber[3] = { 6., 12., 1.};
192 Float_t denribber = 0.8;
193
dc7ca31d 194
195 AliMaterial (0, "T0 Steel$", 55.850, 26., 7.87, 1.76, 999);
196 AliMaterial (1, "T0 Vacuum$", 1.e-16, 1.e-16, 1.e-16, 1.e16, 999);
197 AliMaterial (2, "T0 Air$", 14.61, 7.3, .001205, 30423., 999);
198
199 AliMixture (3, "Al2O3 $", aal2o3, zal2o3, denscer, -2, wal2o3);
200 AliMixture (4, "PMT glass $", aglass, zglass, dglass, -2, wglass);
201 char namate[21]="";
202 gMC->Gfmate ((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
203 acer[0] = a;
204 zcer[0] = z;
205 gMC->Gfmate ((*fIdmate)[4], namate, a, z, d, radl, absl, buf, nbuf);
206 acer[1] = a;
207 zcer[1] = z;
208
209 AliMixture (5, "Scintillator$",ascin,zscin,denscin,-2,wscin);
210 AliMixture (6, "Brass $", abrass, zbrass, denbrass, 2, wbrass);
211 AliMixture (7, "Ribber $",aribber,zribber,denribber,-3,wribber);
212 AliMixture (9, "Ceramic $", acer, zcer, denscer, 2, wcer);
213
214 AliMedium (1, "T0 Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
215 AliMedium (2, "Scintillator$", 5, 1, isxfld, sxmgmx, 10., .01, 1., .003, .003);
216 AliMedium (3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
217 AliMedium (4, "Ceramic$", 9, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
218 AliMedium (6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
219 AliMedium (8, "Steel$", 0, 0, isxfld, sxmgmx, 1., .001, 1., .001, .001);
220 AliMedium (9, "Ribber $", 7, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
221 AliMedium(11, "Brass $", 6, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
dc7ca31d 222}
223
224
225//////////////////////////////////////////////////////////////////////
226// Draw a shaded view of the Forward multiplicity detector version 2
227//////////////////////////////////////////////////////////////////////
228void AliT0v2::DrawModule() const
229{
230 //Set ALIC mother transparent
231 gMC->Gsatt ("ALIC", "SEEN", 0);
232
233 //Set volumes visible
234 gMC->Gsatt ("0STA", "SEEN", 0);
235 gMC->Gsatt ("0PMT", "SEEN", 1);
236 gMC->Gsatt ("0DIV", "SEEN", 1);
237
238 gMC->Gdopt ("hide", "on");
239 gMC->Gdopt ("shad", "on");
240 gMC->SetClipBox (".");
241 gMC->SetClipBox ("*", 0, 1000, -1000, 1000, -1000, 1000);
242 gMC->DefaultRange();
243 gMC->Gdraw ("alic", 40, 30, 0, 12, 9.5, 0.7, 0.7);
244 gMC->Gdhead (1111, "T-Zero detector");
245 gMC->Gdopt ("hide", "off");
246}
247
dc7ca31d 248//////////////////////////////////////////////////////////////////////
661663fa 249// Definition of optical properties for the Forward Multiplicity Detector
dc7ca31d 250//////////////////////////////////////////////////////////////////////
661663fa 251void AliT0v2::DefineOpticalProperties()
dc7ca31d 252{
661663fa 253// Optical properties definition.
7235aed2 254// Definition Cherenkov parameters
255 const Int_t NUMENTRIES = 32;
256
257 Float_t ppckov[NUMENTRIES] =
258 { 2.034E-9, 2.068E-9, 2.103E-9, 2.139E-9,
259 2.177E-9, 2.216E-9, 2.256E-9, 2.298E-9,
260 2.341E-9, 2.386E-9, 2.433E-9, 2.481E-9,
261 2.532E-9, 2.585E-9, 2.640E-9, 2.697E-9,
262 2.757E-9, 2.820E-9, 2.885E-9, 2.954E-9,
263 3.026E-9, 3.102E-9, 3.181E-9, 3.265E-9,
264 3.353E-9, 3.446E-9, 3.545E-9, 3.649E-9,
265 3.760E-9, 3.877E-9, 4.002E-9, 4.136E-9 };
266
267 Float_t rindex_qwarz[NUMENTRIES] =
268 { 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
269 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
270 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
271 1.458, 1.458, 1.458, 1.458, 1.458, 1.458, 1.458,
272 1.458, 1.458, 1.458, 1.458 };
273
274 Float_t rindex_air[NUMENTRIES] =
275 { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
276 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
277 1., 1., 1., 1. };
278
279 Float_t effic_all[NUMENTRIES] =
280 { 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
281 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.,
282 1., 1., 1., 1. };
283
284 Float_t absor_qwarz[NUMENTRIES] =
285 { 2000., 2000., 2000., 2000., 2000., 2000., 2000.,
286 2000., 2000., 2000., 2000., 2000., 2000., 2000.,
287 2000., 2000., 2000., 2000., 2000., 2000., 2000.,
288 2000., 2000., 2000., 2000., 2000., 2000., 2000.,
289 2000., 2000., 2000., 2000. };
290
291 Float_t absor_air[NUMENTRIES] =
292 { 200., 200., 200., 200., 200., 200., 200.,
293 200., 200., 200., 200., 200., 200., 200.,
294 200., 200., 200., 200., 200., 200., 200.,
295 200., 200., 200., 200., 200., 200., 200.,
296 200., 200., 200., 200. };
297
298 Int_t *idtmed = fIdtmed->GetArray();
299
300 gMC->SetCerenkov (idtmed[6], NUMENTRIES, ppckov, absor_qwarz, effic_all, rindex_qwarz);
301 gMC->SetCerenkov (idtmed[1], NUMENTRIES, ppckov, absor_air, effic_all, rindex_air);
661663fa 302}
dc7ca31d 303
661663fa 304//////////////////////////////////////////////////////////////////////
305// Initialises version 2 of the Forward Multiplicity Detector
306//////////////////////////////////////////////////////////////////////
307void AliT0v2::Init()
308{
309 AliT0::Init();
310 fIdSens1 = gMC->VolId ("0REG");
dc7ca31d 311 printf ("*** T0 version 2 initialized ***\n");
312}
313
314
315//////////////////////////////////////////////////////////////////////
316// Called for every step in the T0 Detector
317//////////////////////////////////////////////////////////////////////
318void AliT0v2::StepManager()
319{
320 Int_t id;
321 Int_t copy;
322// Int_t copy1;
323 Float_t xyz[3];
324 Float_t XYZ[3];
325 Float_t hitPhoton[6];
326 static Float_t hits[7];
327 static Float_t edep;
328 static Int_t vol[2];
329 TLorentzVector pos;
330 TLorentzVector mom;
331
332
333 if(!gMC->IsTrackAlive()) return; // particle has disappeared
334
335// TGeant3 *g3 = (TGeant3*) gMC;
336// g3->Gpcxyz();
337
338 TClonesArray &lhits = *fHits;
339
340
341///////////////////////////////////////////////
342// If particles is photon then ...
343
344 if (gMC->TrackPid() == 50000050)
345 {
346 id = gMC->CurrentVolID(copy);
347
348 // Check the sensetive volume
349 if (id == fIdSens1)
350 {
351 if (gMC->IsTrackEntering())
352 {
353 gMC->CurrentVolOffID(2,copy);
354 if (copy < 13)
355 {
356 vol[0] = RIGHT_ARRAY;
357 vol[1] = copy;
358 }
359 else
360 {
361 vol[0] = LEFT_ARRAY;
362 vol[1] = copy - 12;
363 }
364
365 gMC->TrackPosition(pos);
366 gMC->TrackMomentum(mom);
367 XYZ[0] = pos[0];
368 XYZ[1] = pos[1];
369 XYZ[2] = pos[2];
370 gMC->Gmtod (XYZ, xyz, 1);
371
372 hitPhoton[0] = sqrt (xyz[0] * xyz[0] + xyz[1] * xyz[1]);
373 hitPhoton[1] = mom[0];
374 hitPhoton[2] = mom[1];
375 hitPhoton[3] = mom[2];
376 hitPhoton[4] = 1e9 * gMC->TrackTime();
377 hitPhoton[5] = 1e9 * gMC->Etot();
378
379 AddHitPhoton (gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hitPhoton);
380 }
381 gMC->StopTrack();
382 }
383 else
384 if (id == gMC->VolId ("0DES")) gMC->StopTrack();
385 }
386
387// end photon particalary
388///////////////////////////////////////////////
389
390
391///////////////////////////////////////////////
392// If particles is charge then ...
393
394 // Float_t charge = gMC->TrackCharge();
395 // if(TMath::Abs(charge) <= 0.) return;
396 id = gMC->CurrentVolID(copy);
397
398
399 // printf("gMC->ckine->ipart %d",gMC->ckine->ipart);
400 // Check the sensetive volume
401 if(id==gMC->VolId("0TOP") ) {
402 if(gMC->IsTrackEntering()) {
403 gMC->CurrentVolOffID(2,copy);
404 if (copy < 13)
405 {
406 vol[0] = RIGHT_ARRAY;
407 vol[1] = copy;
408 }
409 else
410 {
411 vol[0] = LEFT_ARRAY;
412 vol[1] = copy - 12;
413 }
414
415 gMC->TrackPosition(pos);
416 hits[0] = pos[0];
417 hits[1] = pos[1];
418 hits[2] = pos[2];
419 Float_t etot = gMC->Etot();
420 hits[4] = etot;
421 Int_t part = gMC->TrackPid();
422 hits[5] = part;
423 Float_t ttime = gMC->TrackTime();
424 hits[6] = ttime*1e9;
425 edep = 0;
426 }
427 if(gMC->IsTrackInside()) {
428 Float_t de = gMC->Edep();
429 edep = edep + de;
430 // printf ("E deposition %f\n",edep);
431 // for (i=0; i<=6; i++){
432 // printf(" HITS on T0 inside %f\n",hits[i]); }
433 }
434 if(gMC->IsTrackExiting()) {
435 Float_t de = gMC->Edep();
436 edep = edep + de;
437 hits[3] = edep * 1e3;
438
439 // for (i=0; i<=6; i++){
440 // printf(" HITS on T0 Exit %f\n",hits[i]); }
441 //for (i=0; i<=1; i++) { printf("T0 vol %d\n",vol[i]);}
442
443 new(lhits[fNhits++]) AliT0hit(fIshunt,gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
444 }
445 }
446
447// end charge particles particalary
448///////////////////////////////////////////////
449
450}