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Services volumes slightly modified and material added following Pierluigi Barberis...
[u/mrichter/AliRoot.git] / ITS / AliITSvPPRcoarsesymm.cxx
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69efe7cb 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/*
17$Log$
e6892b92 18Revision 1.4 2000/10/07 15:33:07 barbera
19Small corrections to the ITSV mother volume
20
990d421f 21Revision 1.3 2000/10/07 13:06:50 barbera
22Some new materials and media defined
23
d12d92a5 24Revision 1.2 2000/10/07 10:42:43 barbera
25Mother volume ITSV corrected
26
c6e3abc5 27Revision 1.1 2000/10/06 23:09:12 barbera
28New coarse geometry (symmetric services
29
69efe7cb 30Revision 1.20 2000/10/02 21:28:08 fca
31Removal of useless dependecies via forward declarations
32
33Revision 1.19 2000/07/10 16:07:19 fca
34Release version of ITS code
35
36Revision 1.14.2.2 2000/05/19 10:09:21 nilsen
37fix for bug with HP and Sun unix + fix for event display in ITS-working branch
38
39Revision 1.14.2.1 2000/03/04 23:45:19 nilsen
40Fixed up the comments/documentation.
41
42Revision 1.14 1999/11/25 06:52:56 fca
43Correct value of drca
44
45Revision 1.13.2.1 1999/11/25 06:52:21 fca
46Correct value of drca
47
48Revision 1.13 1999/10/27 11:16:26 fca
49Correction of problem in geometry
50
51Revision 1.12 1999/10/22 08:25:25 fca
52remove double definition of destructors
53
54Revision 1.11 1999/10/22 08:16:49 fca
55Correct destructors, thanks to I.Hrivnacova
56
57Revision 1.10 1999/10/06 19:56:50 fca
58Add destructor
59
60Revision 1.9 1999/10/05 08:05:09 fca
61Minor corrections for uninitialised variables.
62
63Revision 1.8 1999/09/29 09:24:20 fca
64Introduction of the Copyright and cvs Log
65
66*/
67
68///////////////////////////////////////////////////////////////////////////////
69// //
70// Inner Traking System version PPR coarse symmetric //
71// This class contains the base procedures for the Inner Tracking System //
72// //
73// Authors: R. Barbera
74// version 6.
75// Created 2000.
76//
77// NOTE: THIS IS THE COARSE SYMMETRIC PPR geometry of the ITS.
78// THIS WILL NOT WORK
79// with the geometry or module classes or any analysis classes. You are
80// strongly encouraged to uses AliITSv5.
81// //
82///////////////////////////////////////////////////////////////////////////////
83
84#include <TMath.h>
85#include <TRandom.h>
86#include <TVector.h>
87#include <TGeometry.h>
88#include <TNode.h>
89#include <TTUBE.h>
90#include <TFile.h> // only required for Tracking function?
91#include <TCanvas.h>
92#include <TObjArray.h>
93#include <TClonesArray.h>
94
95
96#include "AliMC.h"
97#include "AliMagF.h"
98#include "AliConst.h"
99
100#include "AliITShit.h"
101#include "AliITSvPPRcoarsesymm.h"
102#include "AliRun.h"
103
104
105ClassImp(AliITSvPPRcoarsesymm)
106
107//_____________________________________________________________________________
108AliITSvPPRcoarsesymm::AliITSvPPRcoarsesymm() {
109////////////////////////////////////////////////////////////////////////
110// Standard default constructor for the ITS version 7.
111////////////////////////////////////////////////////////////////////////
112
113 fIdN = 6;
114 fIdName = new TString[fIdN];
115 fIdName[0] = "ITS1";
116 fIdName[1] = "ITS2";
117 fIdName[2] = "ITS3";
118 fIdName[3] = "ITS4";
119 fIdName[4] = "ITS5";
120 fIdName[5] = "ITS6";
121 fIdSens = new Int_t[fIdN];
122 for (Int_t i=0;i<fIdN;i++) fIdSens[i]=fIdName[i].Length();
123}
124//_____________________________________________________________________________
125AliITSvPPRcoarsesymm::AliITSvPPRcoarsesymm(const char *name, const char *title) : AliITS(name, title){
126////////////////////////////////////////////////////////////////////////
127// Standard constructor for the ITS version 7.
128////////////////////////////////////////////////////////////////////////
129
130 fIdN = 6;
131 fIdName = new TString[fIdN];
132 fIdName[0] = "ITS1";
133 fIdName[1] = "ITS2";
134 fIdName[2] = "ITS3";
135 fIdName[3] = "ITS4";
136 fIdName[4] = "ITS5";
137 fIdName[5] = "ITS6";
138 fIdSens = new Int_t[fIdN];
139 for (Int_t i=0;i<fIdN;i++) fIdSens[i]=fIdName[i].Length();
140
141}
142//____________________________________________________________________________
143AliITSvPPRcoarsesymm::AliITSvPPRcoarsesymm(const AliITSvPPRcoarsesymm &source){
144////////////////////////////////////////////////////////////////////////
145// Copy Constructor for ITS version 7.
146////////////////////////////////////////////////////////////////////////
147 if(&source == this) return;
148 printf("Not allowed to copy AliITSvPPRcoarsesymm\n");
149 return;
150}
151//_____________________________________________________________________________
152AliITSvPPRcoarsesymm& AliITSvPPRcoarsesymm::operator=(const AliITSvPPRcoarsesymm &source){
153////////////////////////////////////////////////////////////////////////
154// Assignment operator for the ITS version 7.
155////////////////////////////////////////////////////////////////////////
156 if(&source == this) return *this;
157 printf("Not allowed to copy AliITSvPPRcoarsesymm\n");
158 return *this;
159}
160//_____________________________________________________________________________
161AliITSvPPRcoarsesymm::~AliITSvPPRcoarsesymm() {
162////////////////////////////////////////////////////////////////////////
163// Standard destructor for the ITS version 7.
164////////////////////////////////////////////////////////////////////////
165}
166
167//__________________________________________________________________________
168void AliITSvPPRcoarsesymm::BuildGeometry(){
169////////////////////////////////////////////////////////////////////////
170// Geometry builder for the ITS version 7.
171////////////////////////////////////////////////////////////////////////
172 TNode *node, *top;
173 const int kColorITS=kYellow;
174 //
175 top = gAlice->GetGeometry()->GetNode("alice");
176
177 new TTUBE("S_layer1","Layer1 of ITS","void",3.95,3.95+0.05475,12.25);
178 top->cd();
179 node = new TNode("Layer1","Layer1","S_layer1",0,0,0,"");
180 node->SetLineColor(kColorITS);
181 fNodes->Add(node);
182
183 new TTUBE("S_layer2","Layer2 of ITS","void",7.,7.+0.05475,16.3);
184 top->cd();
185 node = new TNode("Layer2","Layer2","S_layer2",0,0,0,"");
186 node->SetLineColor(kColorITS);
187 fNodes->Add(node);
188
189 new TTUBE("S_layer3","Layer3 of ITS","void",15.,15.+0.05288,21.1);
190 top->cd();
191 node = new TNode("Layer3","Layer3","S_layer3",0,0,0,"");
192 node->SetLineColor(kColorITS);
193 fNodes->Add(node);
194
195 new TTUBE("S_layer4","Layer4 of ITS","void",24,24+0.05288,29.6);
196 top->cd();
197 node = new TNode("Layer4","Layer4","S_layer4",0,0,0,"");
198 node->SetLineColor(kColorITS);
199 fNodes->Add(node);
200
201 new TTUBE("S_layer5","Layer5 of ITS","void",40,40+0.05382,45.1);
202 top->cd();
203 node = new TNode("Layer5","Layer5","S_layer5",0,0,0,"");
204 node->SetLineColor(kColorITS);
205 fNodes->Add(node);
206
207 new TTUBE("S_layer6","Layer6 of ITS","void",45,45+0.05382,50.4);
208 top->cd();
209 node = new TNode("Layer6","Layer6","S_layer6",0,0,0,"");
210 node->SetLineColor(kColorITS);
211 fNodes->Add(node);
212}
213//_____________________________________________________________________________
214void AliITSvPPRcoarsesymm::CreateGeometry(){
215////////////////////////////////////////////////////////////////////////
216// This routine defines and Creates the geometry for version 7 of the ITS.
217////////////////////////////////////////////////////////////////////////
218
219 //INNER RADII OF THE SILICON LAYERS
220 Float_t rl[6] = { 3.95,7.,15.,24.,38.1,43.5765 };
221 //THICKNESSES OF LAYERS (in % radiation length)
222 Float_t drl[6] = { 1.03,1.03+0.36,0.34+0.94,0.95,0.34+0.91,0.87 };
223 //HALF LENGTHS OF LAYERS
224 Float_t dzl[6] = { 14.344,14.344,25.1,32.1,49.405,55.27 };
225 //LENGTHS OF END-LADDER BOXES (ALL INCLUDED)
226 Float_t dzb[6] = { 17.,17.,15.,17.,12.,11. }; // check !!
227 //THICKNESSES OF END-LADDER BOXES (ALL INCLUDED)
228 Float_t drb[6] = { 1.5,1.5,5.,5.,3.,3. }; // check spd and ssd !!
229
230
231 Float_t dits[3], rlim, zmax;
232 Float_t zpos;
233 Float_t pcits[15], xltpc;
234 Int_t idrotm[399], i;
235 Float_t dgh[50];
236
237 Int_t *idtmed = fIdtmed->GetArray()-199;
238
239 // CONVERT INTO CM (RL(SI)=9.36 CM)
240 for (i = 0; i < 6; ++i) {
241 drl[i] = drl[i] / 100. * 9.36;
242 }
243
244 // FIELD CAGE HALF LENGTH
245
246 rlim = 56.;
247 zmax = 76.708;
248 xltpc = 284.;
249
c6e3abc5 250 // --- Define ghost volume containing the whole ITS (including services)
251 // and fill it with air
252
253 dgh[0] = 0.;
254 dgh[1] = 360.;
255 dgh[2] = 12.;
256 dgh[3] = -xltpc-5.-0.1;
257 dgh[4] = 62.4;
258 dgh[5] = 85.;
259 dgh[6] = -xltpc;
260 dgh[7] = 61.5;
261 dgh[8] = 85.;
262 dgh[9] = -xltpc;
263 dgh[10] = 61.5;
264 dgh[11] = 61.5+4.;
265 dgh[12] = -100.7;
266 dgh[13] = 44.9;
267 dgh[14] = 56.1;
990d421f 268 dgh[15] = -77.2;
c6e3abc5 269 dgh[16] = 44.9;
270 dgh[17] = 56.1;
271 dgh[18] = -36.;
272 dgh[19] = 3.29;
273 dgh[20] = 56.1;
274 dgh[21] = 36.;
275 dgh[22] = 3.29;
276 dgh[23] = 56.1;
990d421f 277 dgh[24] = 77.2;
c6e3abc5 278 dgh[25] = 44.9;
279 dgh[26] = 56.1;
280 dgh[27] = 100.7;
281 dgh[28] = 44.9;
282 dgh[29] = 56.1;
283 dgh[30] = xltpc;
284 dgh[31] = 61.5;
285 dgh[32] = 61.5+4.;
286 dgh[33] = xltpc;
287 dgh[34] = 61.5;
288 dgh[35] = 85.;
289 dgh[36] = xltpc+4.+0.1;
290 dgh[37] = 62.4;
291 dgh[38] = 85.;
292
293 gMC->Gsvolu("ITSV", "PCON", idtmed[275], dgh, 39);
294
295 // --- Place the ghost volume in its mother volume (ALIC) and make it
296 // invisible
297
298 gMC->Gspos("ITSV", 1, "ALIC", 0., 0., 0., 0, "ONLY");
299 //gMC->Gsatt("ITSV", "SEEN", 0);
300
69efe7cb 301
302 // --- Define ghost volume containing the six layers and fill it with air
303
304 dgh[0] = 0.;
305 dgh[1] = 360.;
306 dgh[2] = 4.;
307 dgh[3] = -76.708;
308 dgh[4] = 45.;
309 dgh[5] = 56.;
310 dgh[6] = -36.;
311 dgh[7] = 3.3;
312 dgh[8] = 56.;
313 dgh[9] = 36.;
314 dgh[10] = 3.3;
315 dgh[11] = 56.;
316 dgh[12] = 76.708;
317 dgh[13] = 45.;
318 dgh[14] = 56.;
c6e3abc5 319 gMC->Gsvolu("ITSD", "PCON", idtmed[275], dgh, 15);
69efe7cb 320
c6e3abc5 321 // --- Place the ghost volume in its mother volume (ALIC) and make it
69efe7cb 322 // invisible
323
c6e3abc5 324 gMC->Gspos("ITSD", 1, "ITSV", 0., 0., 0., 0, "ONLY");
69efe7cb 325 //gMC->Gsatt("ITSV", "SEEN", 0);
326
327 // ITS LAYERS (SILICON)
328
329 dits[0] = rl[0];
330 dits[1] = rl[0] + drl[0];
331 dits[2] = dzl[0];
332 gMC->Gsvolu("ITS1", "TUBE", idtmed[199], dits, 3);
c6e3abc5 333 gMC->Gspos("ITS1", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 334
335 dits[0] = rl[1];
336 dits[1] = rl[1] + drl[1];
337 dits[2] = dzl[1];
338 gMC->Gsvolu("ITS2", "TUBE", idtmed[199], dits, 3);
c6e3abc5 339 gMC->Gspos("ITS2", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 340
341 dits[0] = rl[2];
342 dits[1] = rl[2] + drl[2];
343 dits[2] = dzl[2];
344 gMC->Gsvolu("ITS3", "TUBE", idtmed[224], dits, 3);
c6e3abc5 345 gMC->Gspos("ITS3", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 346
347 dits[0] = rl[3];
348 dits[1] = rl[3] + drl[3];
349 dits[2] = dzl[3];
350 gMC->Gsvolu("ITS4", "TUBE", idtmed[224], dits, 3);
c6e3abc5 351 gMC->Gspos("ITS4", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 352
353 dits[0] = rl[4];
354 dits[1] = rl[4] + drl[4];
355 dits[2] = dzl[4];
356 gMC->Gsvolu("ITS5", "TUBE", idtmed[249], dits, 3);
c6e3abc5 357 gMC->Gspos("ITS5", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 358
359 dits[0] = rl[5];
360 dits[1] = rl[5] + drl[5];
361 dits[2] = dzl[5];
362 gMC->Gsvolu("ITS6", "TUBE", idtmed[249], dits, 3);
c6e3abc5 363 gMC->Gspos("ITS6", 1, "ITSD", 0., 0., 0., 0, "ONLY");
69efe7cb 364
d12d92a5 365 // END-LADDER ELECTRONICS BOXES AND CABLES FOR SPD
69efe7cb 366
d12d92a5 367 gMC->Gsvolu("IEL1", "TUBE", idtmed[208], dits, 0);
368 for (i = 0; i < 2; i++) {
69efe7cb 369 dits[0] = rl[i];
370 dits[1] = dits[0] + drb[i];
371 dits[2] = dzb[i] / 2.;
372 zpos = dzl[i] + dits[2];
d12d92a5 373 gMC->Gsposp("IEL1", i+1, "ITSD", 0., 0., zpos, 0, "ONLY", dits, 3);
374 gMC->Gsposp("IEL1", i+1+6, "ITSD", 0., 0.,-zpos, 0, "ONLY", dits, 3);
69efe7cb 375 }
d12d92a5 376
377 // END-LADDER ELECTRONICS BOXES AND CABLES FOR SDD
378
379 gMC->Gsvolu("IEL2", "TUBE", idtmed[237], dits, 0);
380 for (i = 2; i < 4; i++) {
381 dits[0] = rl[i];
382 dits[1] = dits[0] + drb[i];
383 dits[2] = dzb[i] / 2.;
384 zpos = dzl[i] + dits[2];
385 gMC->Gsposp("IEL2", i+1, "ITSD", 0., 0., zpos, 0, "ONLY", dits, 3);
386 gMC->Gsposp("IEL2", i+1+6, "ITSD", 0., 0.,-zpos, 0, "ONLY", dits, 3);
387 }
388
389 // END-LADDER ELECTRONICS BOXES AND CABLES FOR SSD
390
391 gMC->Gsvolu("IEL3", "TUBE", idtmed[263], dits, 0);
392 for (i = 4; i < 6; i++) {
393 dits[0] = rl[i];
394 dits[1] = dits[0] + drb[i];
395 dits[2] = dzb[i] / 2.;
396 zpos = dzl[i] + dits[2];
397 gMC->Gsposp("IEL3", i+1, "ITSD", 0., 0., zpos, 0, "ONLY", dits, 3);
398 gMC->Gsposp("IEL3", i+1+6, "ITSD", 0., 0.,-zpos, 0, "ONLY", dits, 3);
399 }
69efe7cb 400
69efe7cb 401 // DEFINE END CONES FOR SPD
402
403 pcits[0] = 0.;
404 pcits[1] = 360.;
405 pcits[2] = 2.;
406 pcits[3] = 32.;
407 pcits[4] = (rl[0]+rl[1])/2.;
408 pcits[5] = (rl[0]+rl[1])/2.+2.; // check thickness !!
409 pcits[6] = 39.4;
410 pcits[7] = 10.065;
411 pcits[8] = 10.065+2.; // check thickness !!
d12d92a5 412 gMC->Gsvolu("ICO1", "PCON", idtmed[209], pcits, 9);
69efe7cb 413 AliMatrix(idrotm[200], 90., 0., 90., 90., 180., 0.);
c6e3abc5 414 gMC->Gspos("ICO1", 1, "ITSD", 0., 0., 0., 0, "ONLY");
415 gMC->Gspos("ICO1", 2, "ITSD", 0., 0., 0., idrotm[200], "ONLY");
69efe7cb 416
417
418 // DEFINE END CONES FOR SDD
419
420 pcits[0] = 0.;
421 pcits[1] = 360.;
422 pcits[2] = 2.;
423 pcits[3] = 39.4;
424 pcits[4] = 10.065;
425 pcits[5] = 10.065+3.0; // check thickness !!
426 pcits[6] = 57.4;
427 pcits[7] = 28.;
428 pcits[8] = 28.+3.0; // check thickness !!
d12d92a5 429 gMC->Gsvolu("ICO2", "PCON", idtmed[238], pcits, 9);
c6e3abc5 430 gMC->Gspos("ICO2", 1, "ITSD", 0., 0., 0., 0, "ONLY");
431 gMC->Gspos("ICO2", 2, "ITSD", 0., 0., 0., idrotm[200], "ONLY");
69efe7cb 432
433
434 // DEFINE END CONES FOR SSD
435
436 pcits[0] = 0.;
437 pcits[1] = 360.;
438 pcits[2] = 2.;
439 pcits[3] = 57.4;
440 pcits[4] = 28.0;
441 pcits[5] = 28.0+4.0; // check thickness !!
442 pcits[6] = 74.0;
443 pcits[7] = 47.;
444 pcits[8] = 47.+4.0; // check thickness !!
d12d92a5 445 gMC->Gsvolu("ICO3", "PCON", idtmed[264], pcits, 9);
c6e3abc5 446 gMC->Gspos("ICO3", 1, "ITSD", 0., 0., 0., 0, "ONLY");
447 gMC->Gspos("ICO3", 2, "ITSD", 0., 0., 0., idrotm[200], "ONLY");
69efe7cb 448
449
450 // SERVICES
451
452
e6892b92 453 // --- Define cables at the end of the ITS cones - copper part
69efe7cb 454
455 dgh[0] = 45.;
e6892b92 456 dgh[1] = 45.+1.0;
457 dgh[2] = 9.75;
458
459 gMC->Gsvolu("ICCU", "TUBE", idtmed[279], dgh, 3);
460 gMC->Gspos("ICCU", 1, "ITSV", 0., 0., 86.45, 0, "ONLY");
461 gMC->Gspos("ICCU", 2, "ITSV", 0., 0., -86.45, idrotm[200], "ONLY");
462
463 // --- Define cables at the end of the ITS cones - carbon part
464
465 dgh[0] = 45.+1.0;
466 dgh[1] = 45.+1.0+1.5;
69efe7cb 467 dgh[2] = 9.75;
468
e6892b92 469 gMC->Gsvolu("ICCC", "TUBE", idtmed[274], dgh, 3);
470 gMC->Gspos("ICCC", 1, "ITSV", 0., 0., 86.45, 0, "ONLY");
471 gMC->Gspos("ICCC", 2, "ITSV", 0., 0., -86.45, idrotm[200], "ONLY");
69efe7cb 472
473 // --- Define patch panels at the end of the ITS cones
474
475 dgh[0] = 45.;
476 dgh[1] = 56.;
477 dgh[2] = 2.25;
478
e6892b92 479 gMC->Gsvolu("IPAN", "TUBE", idtmed[285], dgh, 3);
c6e3abc5 480 gMC->Gspos("IPAN", 1, "ITSV", 0., 0., 98.45, 0, "ONLY");
481 gMC->Gspos("IPAN", 2, "ITSV", 0., 0., -98.45, idrotm[200], "ONLY");
69efe7cb 482
e6892b92 483 // --- Define cables/cooling below the TPC - copper part
69efe7cb 484
485 dgh[0] = 0.;
486 dgh[1] = 360.;
487 dgh[2] = 2.;
488 dgh[3] = 100.7;
489 dgh[4] = 45.2;
e6892b92 490 dgh[5] = 45.2+1.0;
69efe7cb 491 dgh[6] = xltpc;
492 dgh[7] = 61.8;
e6892b92 493 dgh[8] = 61.8+1.0;
494 gMC->Gsvolu("ICU1", "PCON", idtmed[279], dgh, 9);
495 gMC->Gspos("ICU1", 1, "ITSV", 0., 0., 0., 0, "ONLY");
496 gMC->Gspos("ICU1", 2, "ITSV", 0., 0., 0., idrotm[200], "ONLY");
497
498 // --- Define cables/cooling below the TPC - carbon part
499
500 dgh[0] = 0.;
501 dgh[1] = 360.;
502 dgh[2] = 2.;
503 dgh[3] = 100.7;
504 dgh[4] = 45.2+1.0;
505 dgh[5] = 45.2+1.0+1.5;
506 dgh[6] = xltpc;
507 dgh[7] = 61.8+1.0;
508 dgh[8] = 61.8+1.0+1.5;
509 gMC->Gsvolu("ICC1", "PCON", idtmed[274], dgh, 9);
c6e3abc5 510 gMC->Gspos("ICC1", 1, "ITSV", 0., 0., 0., 0, "ONLY");
e6892b92 511 gMC->Gspos("ICC1", 2, "ITSV", 0., 0., 0., idrotm[200], "ONLY");
512
513
514 // --- Define cables/cooling behind the TPC - copper part
515
516 dgh[0] = 0.;
517 dgh[1] = 360.;
518 dgh[2] = 2.;
519 dgh[3] = xltpc+1.5;
520 dgh[4] = 62.5;
521 dgh[5] = 74.5;
522 dgh[6] = xltpc+1.5+1.0;
523 dgh[7] = 62.5;
524 dgh[8] = 74.5;
525 gMC->Gsvolu("ICU2", "PCON", idtmed[279], dgh, 9);
526 gMC->Gspos("ICU2", 1, "ITSV", 0., 0., 0., 0, "ONLY");
527 gMC->Gspos("ICU2", 2, "ITSV", 0., 0., 0., idrotm[200], "ONLY");
69efe7cb 528
e6892b92 529 // --- Define cables/cooling behind the TPC - carbon part
69efe7cb 530
531 dgh[0] = 0.;
532 dgh[1] = 360.;
533 dgh[2] = 2.;
534 dgh[3] = xltpc;
535 dgh[4] = 62.5;
536 dgh[5] = 74.5;
e6892b92 537 dgh[6] = xltpc+1.5;
69efe7cb 538 dgh[7] = 62.5;
539 dgh[8] = 74.5;
e6892b92 540 gMC->Gsvolu("ICC2", "PCON", idtmed[274], dgh, 9);
c6e3abc5 541 gMC->Gspos("ICC2", 1, "ITSV", 0., 0., 0., 0, "ONLY");
e6892b92 542 gMC->Gspos("ICC2", 2, "ITSV", 0., 0., 0., idrotm[200], "ONLY");
69efe7cb 543
d12d92a5 544 // --- Define hook to the TPC on other side w.r.t. the absorber
69efe7cb 545
546 dgh[0] = 74.5;
547 dgh[1] = 79.5;
548 dgh[2] = 2.5;
d12d92a5 549 gMC->Gsvolu("IHOK", "TUBE", idtmed[284], dgh, 3);
c6e3abc5 550 gMC->Gspos("IHOK", 1, "ITSV", 0., 0., -xltpc-dgh[2], 0, "ONLY");
69efe7cb 551
552
553 // --- Outputs the geometry tree in the EUCLID/CAD format
554
555 if (fEuclidOut) {
556 gMC->WriteEuclid("ITSgeometry", "ITSV", 1, 5);
557 }
558}
559//_____________________________________________________________________________
560void AliITSvPPRcoarsesymm::CreateMaterials(){
561////////////////////////////////////////////////////////////////////////
562 //
563 // Create ITS materials
564 // This function defines the default materials used in the Geant
565 // Monte Carlo simulations for the geometries AliITSv1, AliITSv3,
566 // AliITSvPPRcoarsesymm, AliITSvPPRcoarseasymm.
567 // In general it is automatically replaced by
568 // the CreatMaterials routine defined in AliITSv?. Should the function
569 // CreateMaterials not exist for the geometry version you are using this
570 // one is used. See the definition found in AliITSv5 or the other routine
571 // for a complete definition.
572 //
573 // Water H2O
574 Float_t awat[2] = { 1.00794,15.9994 };
575 Float_t zwat[2] = { 1.,8. };
576 Float_t wwat[2] = { 2.,1. };
577 Float_t denswat = 1.;
578 // Freon
579 Float_t afre[2] = { 12.011,18.9984032 };
580 Float_t zfre[2] = { 6.,9. };
581 Float_t wfre[2] = { 5.,12. };
582 Float_t densfre = 1.5;
583 // Ceramics
584 // 94.4% Al2O3 , 2.8% SiO2 , 2.3% MnO , 0.5% Cr2O3
585 Float_t acer[5] = { 26.981539,15.9994,28.0855,54.93805,51.9961 };
586 Float_t zcer[5] = { 13.,8.,14.,25., 24. };
587 Float_t wcer[5] = { .49976,1.01233,.01307, .01782,.00342 };
588 Float_t denscer = 3.6;
589 //
590 // 60% SiO2 , 40% G10FR4
591 // PC board
592 Float_t apcb[3] = { 28.0855,15.9994,17.749 };
593 Float_t zpcb[3] = { 14.,8.,8.875 };
594 Float_t wpcb[3] = { .28,.32,.4 };
595 Float_t denspcb = 1.8;
596 // POLYETHYL
597 Float_t apoly[2] = { 12.01,1. };
598 Float_t zpoly[2] = { 6.,1. };
599 Float_t wpoly[2] = { .33,.67 };
d12d92a5 600 // old SERVICES
69efe7cb 601 Float_t zserv[4] = { 1.,6.,26.,29. };
602 Float_t aserv[4] = { 1.,12.,55.8,63.5 };
603 Float_t wserv[4] = { .014,.086,.42,.48 };
d12d92a5 604 // Stainless steel
605 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
606 Float_t zsteel[4] = { 26.,24.,28.,14. };
607 Float_t wsteel[4] = { .715,.18,.1,.005 };
608
69efe7cb 609
610 Int_t isxfld = gAlice->Field()->Integ();
611 Float_t sxmgmx = gAlice->Field()->Max();
612
613
614 // --- Define the various materials for GEANT ---
615
616 // 200-224 --> Silicon Pixel Detectors (detectors, chips, buses, cooling,..)
617
618 AliMaterial(0, "SPD Si$", 28.0855, 14., 2.33, 9.36, 999);
619 AliMaterial(1, "SPD Si chip$", 28.0855, 14., 2.33, 9.36, 999);
620 AliMaterial(2, "SPD Si bus$", 28.0855, 14., 2.33, 9.36, 999);
621 AliMaterial(3, "SPD C$", 12.011, 6., 2.265,18.8, 999);
622 // v. dens
623 AliMaterial(4, "SPD Air$", 14.61, 7.3, .001205, 30423., 999);
624 AliMaterial(5, "SPD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
625 AliMaterial(6, "SPD Al$", 26.981539, 13., 2.6989, 8.9, 999);
626 AliMixture( 7, "SPD Water $", awat, zwat, denswat, -2, wwat);
627 AliMixture( 8, "SPD Freon$", afre, zfre, densfre, -2, wfre);
d12d92a5 628 AliMaterial(9, "SPD End ladder$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
629 AliMaterial(10, "SPD cone$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
69efe7cb 630 // **
d12d92a5 631 AliMedium(0, "SPD Si$", 0, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
632 AliMedium(1, "SPD Si chip$", 1, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
633 AliMedium(2, "SPD Si bus$", 2, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
634 AliMedium(3, "SPD C$", 3, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
635 AliMedium(4, "SPD Air$", 4, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
636 AliMedium(5, "SPD Vacuum$", 5, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
637 AliMedium(6, "SPD Al$", 6, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
638 AliMedium(7, "SPD Water $", 7, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
639 AliMedium(8, "SPD Freon$", 8, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
640 AliMedium(9, "SPD End ladder",9, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
641 AliMedium(10, "SPD cone$", 10, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
69efe7cb 642
643 // 225-249 --> Silicon Drift Detectors (detectors, chips, buses, cooling,..)
644
645 AliMaterial(25, "SDD Si$", 28.0855, 14., 2.33, 9.36, 999);
646 AliMaterial(26, "SDD Si chip$", 28.0855, 14., 2.33, 9.36, 999);
647 AliMaterial(27, "SDD Si bus$", 28.0855, 14., 2.33, 9.36, 999);
648 AliMaterial(28, "SDD C$", 12.011, 6., 2.265,18.8, 999);
649 // v. dens
650 AliMaterial(29, "SDD Air$", 14.61, 7.3, .001205, 30423., 999);
651 AliMaterial(30, "SDD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
652 AliMaterial(31, "SDD Al$", 26.981539, 13., 2.6989, 8.9, 999);
653 // After a call with ratios by number (negative number of elements),
654 // the ratio array is changed to the ratio by weight, so all successive
655 // calls with the same array must specify the number of elements as
656 // positive
657 AliMixture(32, "SDD Water $", awat, zwat, denswat, 2, wwat);
658 // After a call with ratios by number (negative number of elements),
659 // the ratio array is changed to the ratio by weight, so all successive
660 // calls with the same array must specify the number of elements as
661 // positive
662 AliMixture( 33, "SDD Freon$", afre, zfre, densfre, 2, wfre);
663 AliMixture( 34, "SDD PCB$", apcb, zpcb, denspcb, 3, wpcb);
664 AliMaterial(35, "SDD Copper$", 63.546, 29., 8.96, 1.43, 999);
665 AliMixture( 36, "SDD Ceramics$", acer, zcer, denscer, -5, wcer);
666 AliMaterial(37, "SDD Kapton$", 12.011, 6., 1.3, 31.27, 999);
d12d92a5 667 AliMaterial(38, "SDD End ladder$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
668 AliMaterial(39, "SDD cone$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
69efe7cb 669 // **
670 // check A and Z
d12d92a5 671 AliMedium(25, "SDD Si$", 25, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
69efe7cb 672 AliMedium(26, "SDD Si chip$", 26, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
673 AliMedium(27, "SDD Si bus$", 27, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
674 AliMedium(28, "SDD C$", 28, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
675 AliMedium(29, "SDD Air$", 29, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
676 AliMedium(30, "SDD Vacuum$", 30, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
677 AliMedium(31, "SDD Al$", 31, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
678 AliMedium(32, "SDD Water $", 32, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
679 AliMedium(33, "SDD Freon$", 33, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
680 AliMedium(34, "SDD PCB$", 34, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
681 AliMedium(35, "SDD Copper$", 35, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
682 AliMedium(36, "SDD Ceramics$",36, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
683 AliMedium(37, "SDD Kapton$", 37, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
d12d92a5 684 AliMedium(38, "SDD End ladder",38, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
685 AliMedium(39, "SDD cone$", 39, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
69efe7cb 686
687 // 250-274 --> Silicon Strip Detectors (detectors, chips, buses, cooling,..)
688
689 AliMaterial(50, "SSD Si$", 28.0855, 14., 2.33, 9.36, 999.);
690 AliMaterial(51, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
691 AliMaterial(52, "SSD Si bus$", 28.0855, 14., 2.33, 9.36, 999.);
692 AliMaterial(53, "SSD C$", 12.011, 6., 2.265,18.8, 999.);
693 // v. dens
694 AliMaterial(54, "SSD Air$", 14.61, 7.3, .001205, 30423., 999);
695 AliMaterial(55, "SSD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
696 AliMaterial(56, "SSD Al$", 26.981539, 13., 2.6989, 8.9, 999);
697 // After a call with ratios by number (negative number of elements),
698 // the ratio array is changed to the ratio by weight, so all successive
699 // calls with the same array must specify the number of elements as
700 // positive
701 AliMixture(57, "SSD Water $", awat, zwat, denswat, 2, wwat);
702 // After a call with ratios by number (negative number of elements),
703 // the ratio array is changed to the ratio by weight, so all successive
704 // calls with the same array must specify the number of elements as
705 // positive
706 AliMixture(58, "SSD Freon$", afre, zfre, densfre, 2, wfre);
707 AliMixture(59, "SSD PCB$", apcb, zpcb, denspcb, 3, wpcb);
708 AliMaterial(60, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
709 // After a call with ratios by number (negative number of elements),
710 // the ratio array is changed to the ratio by weight, so all successive
711 // calls with the same array must specify the number of elements as
712 // positive
713 AliMixture( 61, "SSD Ceramics$", acer, zcer, denscer, 5, wcer);
714 AliMaterial(62, "SSD Kapton$", 12.011, 6., 1.3, 31.27, 999.);
715 // check A and Z
d12d92a5 716 AliMaterial(63, "SSD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
717 AliMaterial(64, "SSD End ladder$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
718 AliMaterial(65, "SSD cone$",28.0855, 14., 2.33, 9.36, 999); // check !!!!
69efe7cb 719 // **
d12d92a5 720 AliMedium(50, "SSD Si$", 50, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
69efe7cb 721 AliMedium(51, "SSD Si chip$", 51, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
722 AliMedium(52, "SSD Si bus$", 52, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
723 AliMedium(53, "SSD C$", 53, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
724 AliMedium(54, "SSD Air$", 54, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
725 AliMedium(55, "SSD Vacuum$", 55, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
726 AliMedium(56, "SSD Al$", 56, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
727 AliMedium(57, "SSD Water $", 57, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
728 AliMedium(58, "SSD Freon$", 58, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
729 AliMedium(59, "SSD PCB$", 59, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
730 AliMedium(60, "SSD Copper$", 60, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
731 AliMedium(61, "SSD Ceramics$",61, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
732 AliMedium(62, "SSD Kapton$", 62, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
733 AliMedium(63, "SSD G10FR4$", 63, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
d12d92a5 734 AliMedium(64, "SPD End ladder",64, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
735 AliMedium(65, "SPD cone$", 65, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
69efe7cb 736
737 // 275-299 --> General (end-caps, frames, cooling, cables, etc.)
738
739 AliMaterial(75, "GEN C$", 12.011, 6., 2.265, 18.8, 999.);
740 // verify density
741 AliMaterial(76, "GEN Air$", 14.61, 7.3, .001205, 30423., 999);
742 AliMaterial(77, "GEN Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
743 AliMixture( 78, "GEN POLYETHYL$", apoly, zpoly, .95, -2, wpoly);
744 AliMixture( 79, "GEN SERVICES$", aserv, zserv, 4.68, 4, wserv);
e6892b92 745 AliMaterial(80, "GEN Copper$", 63.546, 29., 8.96, 1.43, 999.);
69efe7cb 746 // After a call with ratios by number (negative number of elements),
747 // the ratio array is changed to the ratio by weight, so all successive
748 // calls with the same array must specify the number of elements as
749 // positive
750 AliMixture(81, "GEN Water $", awat, zwat, denswat, 2, wwat);
e6892b92 751 //AliMaterial(82, "GEN Cables$", 12.011, 6., 2.265, 18.8, 999.); // check !!!
752 //AliMaterial(83, "GEN patch pan$", 12.011, 6., 2.265, 18.8, 999.); // check !!!
753 //AliMaterial(84, "GEN serv$", 12.011, 6., 2.265, 18.8, 999.); // check !!!
d12d92a5 754 AliMixture(85, "GEN Inox$", asteel, zsteel, 7.88, 4, wsteel);
e6892b92 755 AliMaterial(86, "GEN Al$", 26.981539, 13., 2.6989, 8.9, 999);
69efe7cb 756 // **
757 AliMedium(75,"GEN C$", 75, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
758 AliMedium(76,"GEN Air$", 76, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
759 AliMedium(77,"GEN Vacuum$", 77, 0,isxfld,sxmgmx, 10., .10, .1, .100,10.00);
760 AliMedium(78,"GEN POLYETHYL$",78, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
761 AliMedium(79,"GEN SERVICES$", 79, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
762 AliMedium(80,"GEN Copper$", 80, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
763 AliMedium(81,"GEN Water $", 81, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
e6892b92 764 //AliMedium(82,"GEN Cables$", 82, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
765 //AliMedium(83,"GEN patch pan$",83, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
766 //AliMedium(84,"GEN serv$", 84, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
d12d92a5 767 AliMedium(85,"GEN Inox$", 85, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
e6892b92 768 AliMedium(86, "GEN Al$", 86, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
769
69efe7cb 770}
771//_____________________________________________________________________________
772void AliITSvPPRcoarsesymm::Init(){
773////////////////////////////////////////////////////////////////////////
774// Initialise the ITS after it has been created.
775////////////////////////////////////////////////////////////////////////
776
777 //
778 AliITS::Init();
779 fMajorVersion = 1;
780 fMinorVersion = 0;
781}
782
783//_____________________________________________________________________________
784void AliITSvPPRcoarsesymm::DrawModule(){
785////////////////////////////////////////////////////////////////////////
786// Draw a shaded view of the FMD version 6.
787////////////////////////////////////////////////////////////////////////
788
789 // Set everything unseen
790 gMC->Gsatt("*", "seen", -1);
791 //
792 // Set ALIC mother visible
793 gMC->Gsatt("ALIC","SEEN",0);
794 //
795 // Set the volumes visible
796 gMC->Gsatt("ITSD","SEEN",0);
797 gMC->Gsatt("ITS1","SEEN",1);
798 gMC->Gsatt("ITS2","SEEN",1);
799 gMC->Gsatt("ITS3","SEEN",1);
800 gMC->Gsatt("ITS4","SEEN",1);
801 gMC->Gsatt("ITS5","SEEN",1);
802 gMC->Gsatt("ITS6","SEEN",1);
803
804 gMC->Gsatt("IPCB","SEEN",1);
805 gMC->Gsatt("ICO2","SEEN",1);
806 gMC->Gsatt("ICER","SEEN",0);
807 gMC->Gsatt("ISI2","SEEN",0);
808 gMC->Gsatt("IPLA","SEEN",0);
809 gMC->Gsatt("ICO3","SEEN",0);
810 gMC->Gsatt("IEPX","SEEN",0);
811 gMC->Gsatt("ISI3","SEEN",1);
812 gMC->Gsatt("ISUP","SEEN",0);
813 gMC->Gsatt("ICHO","SEEN",0);
814 gMC->Gsatt("ICMO","SEEN",0);
815 gMC->Gsatt("ICMD","SEEN",0);
816 gMC->Gsatt("ICCO","SEEN",1);
817 gMC->Gsatt("ICCM","SEEN",0);
818 gMC->Gsatt("ITMD","SEEN",0);
819 gMC->Gsatt("ITTT","SEEN",1);
820
821 //
822 gMC->Gdopt("hide", "on");
823 gMC->Gdopt("shad", "on");
824 gMC->Gsatt("*", "fill", 7);
825 gMC->SetClipBox(".");
826 gMC->SetClipBox("*", 0, 300, -300, 300, -300, 300);
827 gMC->DefaultRange();
828 gMC->Gdraw("alic", 40, 30, 0, 11, 10, .07, .07);
829 gMC->Gdhead(1111, "Inner Tracking System Version 1");
830 gMC->Gdman(17, 6, "MAN");
831}
832//_____________________________________________________________________________
833void AliITSvPPRcoarsesymm::StepManager(){
834////////////////////////////////////////////////////////////////////////
835// Called for every step in the ITS, then calls the AliITShit class
836// creator with the information to be recoreded about that hit.
837////////////////////////////////////////////////////////////////////////
c6e3abc5 838
839/*
69efe7cb 840 Int_t copy, id;
841 Float_t hits[8];
842 Int_t vol[4];
843 TLorentzVector position, momentum;
844// TClonesArray &lhits = *fHits;
845//
846// no hits for this coarse symmetric version.
847//
848
849 //
850 // Track status
851 vol[3] = 0;
852 if(gMC->IsTrackInside()) vol[3] += 1;
853 if(gMC->IsTrackEntering()) vol[3] += 2;
854 if(gMC->IsTrackExiting()) vol[3] += 4;
855 if(gMC->IsTrackOut()) vol[3] += 8;
856 if(gMC->IsTrackDisappeared()) vol[3] += 16;
857 if(gMC->IsTrackStop()) vol[3] += 32;
858 if(gMC->IsTrackAlive()) vol[3] += 64;
859 //
860 // Fill hit structure.
861 if( !(gMC->TrackCharge()) ) return;
862 //
863 // Only entering charged tracks
864 if((id=gMC->CurrentVolID(copy))==fIdSens[0]) {
865 vol[0]=1;
866 id=gMC->CurrentVolOffID(1,copy);
867 vol[1]=copy;
868 id=gMC->CurrentVolOffID(2,copy);
869 vol[2]=copy;
870 } else if(id==fIdSens[1]) {
871 vol[0]=2;
872 id=gMC->CurrentVolOffID(1,copy);
873 vol[1]=copy;
874 id=gMC->CurrentVolOffID(2,copy);
875 vol[2]=copy;
876 } else if(id==fIdSens[2]) {
877 vol[0]=3;
878 vol[1]=copy;
879 id=gMC->CurrentVolOffID(1,copy);
880 vol[2]=copy;
881 } else if(id==fIdSens[3]) {
882 vol[0]=4;
883 vol[1]=copy;
884 id=gMC->CurrentVolOffID(1,copy);
885 vol[2]=copy;
886 } else if(id==fIdSens[4]) {
887 vol[0]=5;
888 vol[1]=copy;
889 id=gMC->CurrentVolOffID(1,copy);
890 vol[2]=copy;
891 } else if(id==fIdSens[5]) {
892 vol[0]=6;
893 vol[1]=copy;
894 id=gMC->CurrentVolOffID(1,copy);
895 vol[2]=copy;
896 } else return;
897 gMC->TrackPosition(position);
898 gMC->TrackMomentum(momentum);
899 hits[0]=position[0];
900 hits[1]=position[1];
901 hits[2]=position[2];
902 hits[3]=momentum[0];
903 hits[4]=momentum[1];
904 hits[5]=momentum[2];
905 hits[6]=gMC->Edep();
906 hits[7]=gMC->TrackTime();
907// new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,hits);
908//
909// no hits for this coarse symmetric version.
910//
c6e3abc5 911*/
69efe7cb 912}
913/*
914//____________________________________________________________________________
915void AliITSvPPRcoarsesymm::Streamer(TBuffer &R__b){
916////////////////////////////////////////////////////////////////////////
917// A dummy Streamer function for this class AliITSvPPRcoarsesymm. By default it
918// only streams the AliITS class as it is required. Since this class
919// dosen't contain any "real" data to be saved, it doesn't.
920////////////////////////////////////////////////////////////////////////
921
922 if (R__b.IsReading()) {
923 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
924 AliITS::Streamer(R__b);
925 } else {
926 R__b.WriteVersion(AliITSvPPRcoarsesymm::IsA());
927 AliITS::Streamer(R__b);
928 } // end if R__b.IsReading()
929}
930*/