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4c039060 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$Log$
b6668dd3 18Revision 1.14.2.2 2000/05/19 10:09:21 nilsen
19fix for bug with HP and Sun unix + fix for event display in ITS-working branch
c9a71be1 20
56d6a1ef 21Revision 1.14.2.1 2000/03/04 23:45:19 nilsen
22Fixed up the comments/documentation.
23
24Revision 1.14 1999/11/25 06:52:56 fca
25Correct value of drca
26
c4a5a168 27Revision 1.13.2.1 1999/11/25 06:52:21 fca
28Correct value of drca
29
30Revision 1.13 1999/10/27 11:16:26 fca
31Correction of problem in geometry
32
7963222e 33Revision 1.12 1999/10/22 08:25:25 fca
34remove double definition of destructors
35
1e3deba7 36Revision 1.11 1999/10/22 08:16:49 fca
37Correct destructors, thanks to I.Hrivnacova
38
5b8cc8df 39Revision 1.10 1999/10/06 19:56:50 fca
40Add destructor
41
1c1b73f8 42Revision 1.9 1999/10/05 08:05:09 fca
43Minor corrections for uninitialised variables.
44
593d2ea1 45Revision 1.8 1999/09/29 09:24:20 fca
46Introduction of the Copyright and cvs Log
47
4c039060 48*/
49
fe4da5cc 50///////////////////////////////////////////////////////////////////////////////
51// //
52// Inner Traking System version 1 //
58005f18 53// This class contains the base procedures for the Inner Tracking System //
fe4da5cc 54// //
58005f18 55// Authors: R. Barbera, A. Morsch.
56// version 1.
57// Created 1998.
58//
59// NOTE: THIS IS THE COARSE pre.TDR geometry of the ITS. THIS WILL NOT WORK
60// with the geometry or module classes or any analysis classes. You are
61// strongly encouraged to uses AliITSv5.
fe4da5cc 62// //
63///////////////////////////////////////////////////////////////////////////////
64
65#include <TMath.h>
66#include <TRandom.h>
67#include <TVector.h>
c9a71be1 68#include <TGeometry.h>
69#include <TNode.h>
70#include <TTUBE.h>
b6668dd3 71#include <TFile.h> // only required for Tracking function?
72#include <TCanvas.h>
73#include <TObjArray.h>
74#include <TClonesArray.h>
75
c9a71be1 76
77#include "AliMC.h"
78#include "AliConst.h"
79
58005f18 80#include "AliITShit.h"
fe4da5cc 81#include "AliITSv1.h"
82#include "AliRun.h"
83
fe4da5cc 84
85ClassImp(AliITSv1)
86
87//_____________________________________________________________________________
e8189707 88AliITSv1::AliITSv1() {
56d6a1ef 89////////////////////////////////////////////////////////////////////////
90// Standard default constructor for the ITS version 1.
91////////////////////////////////////////////////////////////////////////
e8189707 92
93 fIdN = 6;
94 fIdName = new TString[fIdN];
95 fIdName[0] = "ITS1";
96 fIdName[1] = "ITS2";
97 fIdName[2] = "ITS3";
98 fIdName[3] = "ITS4";
99 fIdName[4] = "ITS5";
100 fIdName[5] = "ITS6";
101 fIdSens = new Int_t[fIdN];
102 for (Int_t i=0;i<fIdN;i++) fIdSens[i]=fIdName[i].Length();
fe4da5cc 103}
fe4da5cc 104//_____________________________________________________________________________
56d6a1ef 105AliITSv1::AliITSv1(const char *name, const char *title) : AliITS(name, title){
106////////////////////////////////////////////////////////////////////////
107// Standard constructor for the ITS version 1.
108////////////////////////////////////////////////////////////////////////
e8189707 109
110 fIdN = 6;
111 fIdName = new TString[fIdN];
112 fIdName[0] = "ITS1";
113 fIdName[1] = "ITS2";
114 fIdName[2] = "ITS3";
115 fIdName[3] = "ITS4";
116 fIdName[4] = "ITS5";
117 fIdName[5] = "ITS6";
118 fIdSens = new Int_t[fIdN];
119 for (Int_t i=0;i<fIdN;i++) fIdSens[i]=fIdName[i].Length();
120
fe4da5cc 121}
b6668dd3 122//____________________________________________________________________________
123AliITSv1::AliITSv1(const AliITSv1 &source){
124////////////////////////////////////////////////////////////////////////
125// Copy Constructor for ITS version 1.
126////////////////////////////////////////////////////////////////////////
127 if(&source == this) return;
e8189707 128 printf("Not allowed to copy AliITSv1\n");
481937a6 129 return;
b6668dd3 130}
131//_____________________________________________________________________________
132AliITSv1& AliITSv1::operator=(const AliITSv1 &source){
133////////////////////////////////////////////////////////////////////////
134// Assignment operator for the ITS version 1.
135////////////////////////////////////////////////////////////////////////
481937a6 136 if(&source == this) return *this;
e8189707 137 printf("Not allowed to copy AliITSv1\n");
481937a6 138 return *this;
b6668dd3 139}
1c1b73f8 140//_____________________________________________________________________________
141AliITSv1::~AliITSv1() {
56d6a1ef 142////////////////////////////////////////////////////////////////////////
143// Standard destructor for the ITS version 1.
144////////////////////////////////////////////////////////////////////////
e8189707 145}
146
147//__________________________________________________________________________
c9a71be1 148void AliITSv1::BuildGeometry(){
b6668dd3 149////////////////////////////////////////////////////////////////////////
150// Geometry builder for the ITS version 1.
151////////////////////////////////////////////////////////////////////////
152 TNode *node, *top;
e8189707 153 const int kColorITS=kYellow;
c9a71be1 154 //
b6668dd3 155 top = gAlice->GetGeometry()->GetNode("alice");
c9a71be1 156
157 new TTUBE("S_layer1","Layer1 of ITS","void",3.9,3.9+0.05475,12.25);
b6668dd3 158 top->cd();
159 node = new TNode("Layer1","Layer1","S_layer1",0,0,0,"");
160 node->SetLineColor(kColorITS);
161 fNodes->Add(node);
c9a71be1 162
163 new TTUBE("S_layer2","Layer2 of ITS","void",7.6,7.6+0.05475,16.3);
b6668dd3 164 top->cd();
165 node = new TNode("Layer2","Layer2","S_layer2",0,0,0,"");
166 node->SetLineColor(kColorITS);
167 fNodes->Add(node);
c9a71be1 168
169 new TTUBE("S_layer3","Layer3 of ITS","void",14,14+0.05288,21.1);
b6668dd3 170 top->cd();
171 node = new TNode("Layer3","Layer3","S_layer3",0,0,0,"");
172 node->SetLineColor(kColorITS);
173 fNodes->Add(node);
c9a71be1 174
175 new TTUBE("S_layer4","Layer4 of ITS","void",24,24+0.05288,29.6);
b6668dd3 176 top->cd();
177 node = new TNode("Layer4","Layer4","S_layer4",0,0,0,"");
178 node->SetLineColor(kColorITS);
179 fNodes->Add(node);
c9a71be1 180
181 new TTUBE("S_layer5","Layer5 of ITS","void",40,40+0.05382,45.1);
b6668dd3 182 top->cd();
183 node = new TNode("Layer5","Layer5","S_layer5",0,0,0,"");
184 node->SetLineColor(kColorITS);
185 fNodes->Add(node);
c9a71be1 186
187 new TTUBE("S_layer6","Layer6 of ITS","void",45,45+0.05382,50.4);
b6668dd3 188 top->cd();
189 node = new TNode("Layer6","Layer6","S_layer6",0,0,0,"");
190 node->SetLineColor(kColorITS);
191 fNodes->Add(node);
c9a71be1 192}
fe4da5cc 193//_____________________________________________________________________________
56d6a1ef 194void AliITSv1::CreateGeometry(){
195////////////////////////////////////////////////////////////////////////
196// This routine defines and Creates the geometry for version 1 of the ITS.
197////////////////////////////////////////////////////////////////////////
fe4da5cc 198
199 Float_t drcer[6] = { 0.,0.,.08,.08,0.,0. }; //CERAMICS THICKNESS
200 Float_t drepx[6] = { 0.,0.,0.,0.,.5357,.5357 }; //EPOXY THICKNESS
201 Float_t drpla[6] = { 0.,0.,0.,0.,.1786,.1786 }; //PLASTIC THICKNESS
202 Float_t dzb[6] = { 0.,0.,15.,15.,4.,4. }; //LENGTH OF BOXES
203 Float_t dphi[6] = { 72.,72.,72.,72.,50.6,45. }; //COVERED PHI-RANGE FOR LAYERS 1-6
204 Float_t rl[6] = { 3.9,7.6,14.,24.,40.,45. }; //SILICON LAYERS INNER RADIUS
205 Float_t drl[6] = { .755,.755,.809,.809,.7,.7 }; //THICKNESS OF LAYERS (in % radiation length)
206 Float_t dzl[6] = { 12.67,16.91,20.85,29.15,45.11,50.975 };//HALF LENGTH OF LAYERS
207 Float_t drpcb[6] = { 0.,0.,.06,.06,0.,0. }; //PCB THICKNESS
208 Float_t drcu[6] = { 0.,0.,.0504,.0504,.0357,.0357 }; //COPPER THICKNESS
209 Float_t drsi[6] = { 0.,0.,.006,.006,.3571,.3571 }; //SILICON THICKNESS
210
c4a5a168 211 Float_t drca, dzfc;
fe4da5cc 212 Int_t i, nsec;
b6668dd3 213 Float_t rend, drcatpc, dzco, zend, dits[3], rlim, drsu, zmax;
fe4da5cc 214 Float_t zpos, dzco1, dzco2;
215 Float_t drcac[6], acone, dphii;
216 Float_t pcits[15], xltpc;
217 Float_t rzcone, rstep, r0, z0, acable, fp, dz, zi, ri;
218 Int_t idrotm[399];
219 Float_t dgh[15];
220
ad51aeb0 221 Int_t *idtmed = fIdtmed->GetArray()-199;
fe4da5cc 222
223 // CONVERT INTO CM (RL(SI)=9.36 CM)
e8189707 224 for (i = 0; i < 6; ++i) {
fe4da5cc 225 drl[i] = drl[i] / 100. * 9.36;
226 }
227
228 // SUPPORT ENDPLANE THICKNESS
229 drsu = 2.*0.06+1./20; // 1./20. is 1 cm of honeycomb (1/20 carbon density);
230
231 // CONE BELOW TPC
232
b6668dd3 233 drcatpc = 1.2/4.;
fe4da5cc 234
235 // CABLE THICKNESS (CONICAL CABLES CONNECTING THE LAYERS)
236
c4a5a168 237 drca = 0.2;
fe4da5cc 238
239 // ITS CONE ANGLE
240
241 acone = 45.;
242 acone *= kDegrad;
243
244 // CONE RADIUS AT 1ST LAYER
245
246 rzcone = 30.;
247
248 // FIELD CAGE HALF LENGTH
249
250 dzfc = 64.5;
251 rlim = 48.;
252 zmax = 80.;
253 xltpc = 275.;
254
255
256 // PARAMETERS FOR SMALL (1/2) ITS
257
e8189707 258 for (i = 0; i < 6; ++i) {
fe4da5cc 259 dzl[i] /= 2.;
260 dzb[i] /= 2.;
261 }
262 drca /= 2.;
263 acone /= 2.;
b6668dd3 264 drcatpc /= 2.;
fe4da5cc 265 rzcone /= 2.;
266 dzfc /= 2.;
267 zmax /= 2.;
268 xltpc /= 2.;
269 acable = 15.;
270
271
272
273 // EQUAL DISTRIBUTION INTO THE 6 LAYERS
b6668dd3 274 rstep = drcatpc / 6.;
e8189707 275 for (i = 0; i < 6; ++i) {
fe4da5cc 276 drcac[i] = (i+1) * rstep;
277 }
278
279 // NUMBER OF PHI SECTORS
280
281 nsec = 5;
282
283 // PACK IN PHI AS MUCH AS POSSIBLE
284 // NOW PACK USING THICKNESS
285
e8189707 286 for (i = 0; i < 6; ++i) {
fe4da5cc 287
288// PACKING FACTOR
289 fp = rl[5] / rl[i];
290
291 // PHI-PACKING NOT SUFFICIENT ?
292
293 if (dphi[i]/45 < fp) {
294 drcac[i] = drcac[i] * fp * 45/dphi[i];
295 }
296 }
297
298
299 // --- Define ghost volume containing the six layers and fill it with air
300
301 dgh[0] = 3.5;
302 dgh[1] = 50.;
303 dgh[2] = zmax;
cfce8870 304 gMC->Gsvolu("ITSV", "TUBE", idtmed[275], dgh, 3);
fe4da5cc 305
306 // --- Place the ghost volume in its mother volume (ALIC) and make it
307 // invisible
308
cfce8870 309 gMC->Gspos("ITSV", 1, "ALIC", 0., 0., 0., 0, "ONLY");
310 gMC->Gsatt("ITSV", "SEEN", 0);
fe4da5cc 311
312 // ITS LAYERS (SILICON)
313
314 dits[0] = rl[0];
315 dits[1] = rl[0] + drl[0];
316 dits[2] = dzl[0];
cfce8870 317 gMC->Gsvolu("ITS1", "TUBE", idtmed[199], dits, 3);
318 gMC->Gspos("ITS1", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 319
320 dits[0] = rl[1];
321 dits[1] = rl[1] + drl[1];
322 dits[2] = dzl[1];
cfce8870 323 gMC->Gsvolu("ITS2", "TUBE", idtmed[199], dits, 3);
324 gMC->Gspos("ITS2", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 325
326 dits[0] = rl[2];
327 dits[1] = rl[2] + drl[2];
328 dits[2] = dzl[2];
cfce8870 329 gMC->Gsvolu("ITS3", "TUBE", idtmed[224], dits, 3);
330 gMC->Gspos("ITS3", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 331
332 dits[0] = rl[3];
333 dits[1] = rl[3] + drl[3];
334 dits[2] = dzl[3];
cfce8870 335 gMC->Gsvolu("ITS4", "TUBE", idtmed[224], dits, 3);
336 gMC->Gspos("ITS4", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 337
338 dits[0] = rl[4];
339 dits[1] = rl[4] + drl[4];
340 dits[2] = dzl[4];
cfce8870 341 gMC->Gsvolu("ITS5", "TUBE", idtmed[249], dits, 3);
342 gMC->Gspos("ITS5", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 343
344 dits[0] = rl[5];
345 dits[1] = rl[5] + drl[5];
346 dits[2] = dzl[5];
cfce8870 347 gMC->Gsvolu("ITS6", "TUBE", idtmed[249], dits, 3);
348 gMC->Gspos("ITS6", 1, "ITSV", 0., 0., 0., 0, "ONLY");
fe4da5cc 349
350 // ELECTRONICS BOXES
351
352 // PCB (layer #3 and #4)
353
cfce8870 354 gMC->Gsvolu("IPCB", "TUBE", idtmed[233], dits, 0);
e8189707 355 for (i = 2; i < 4; ++i) {
fe4da5cc 356 dits[0] = rl[i];
357 dits[1] = dits[0] + drpcb[i];
358 dits[2] = dzb[i] / 2.;
359 zpos = dzl[i] + dits[2];
cfce8870 360 gMC->Gsposp("IPCB", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
361 gMC->Gsposp("IPCB", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 362 }
363
364 // COPPER (layer #3 and #4)
365
cfce8870 366 gMC->Gsvolu("ICO2", "TUBE", idtmed[234], dits, 0);
e8189707 367 for (i = 2; i < 4; ++i) {
fe4da5cc 368 dits[0] = rl[i] + drpcb[i];
369 dits[1] = dits[0] + drcu[i];
370 dits[2] = dzb[i] / 2.;
371 zpos = dzl[i] + dits[2];
cfce8870 372 gMC->Gsposp("ICO2", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
373 gMC->Gsposp("ICO2", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 374 }
375
376 // CERAMICS (layer #3 and #4)
377
cfce8870 378 gMC->Gsvolu("ICER", "TUBE", idtmed[235], dits, 0);
e8189707 379 for (i = 2; i < 4; ++i) {
fe4da5cc 380 dits[0] = rl[i] + drpcb[i] + drcu[i];
381 dits[1] = dits[0] + drcer[i];
382 dits[2] = dzb[i] / 2.;
383 zpos = dzl[i] + dits[2];
cfce8870 384 gMC->Gsposp("ICER", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
385 gMC->Gsposp("ICER", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 386 }
387
388 // SILICON (layer #3 and #4)
389
cfce8870 390 gMC->Gsvolu("ISI2", "TUBE", idtmed[226], dits, 0);
e8189707 391 for (i = 2; i < 4; ++i) {
fe4da5cc 392 dits[0] = rl[i] + drpcb[i] + drcu[i] + drcer[i];
393 dits[1] = dits[0] + drsi[i];
394 dits[2] = dzb[i] / 2.;
395 zpos = dzl[i] + dits[2];
cfce8870 396 gMC->Gsposp("ISI2", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
397 gMC->Gsposp("ISI2", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 398 }
399
400 // PLASTIC (G10FR4) (layer #5 and #6)
401
cfce8870 402 gMC->Gsvolu("IPLA", "TUBE", idtmed[262], dits, 0);
e8189707 403 for (i = 4; i < 6; ++i) {
fe4da5cc 404 dits[0] = rl[i];
405 dits[1] = dits[0] + drpla[i];
406 dits[2] = dzb[i] / 2.;
407 zpos = dzl[i] + dits[2];
cfce8870 408 gMC->Gsposp("IPLA", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
409 gMC->Gsposp("IPLA", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 410 }
411
412 // COPPER (layer #5 and #6)
413
cfce8870 414 gMC->Gsvolu("ICO3", "TUBE", idtmed[259], dits, 0);
e8189707 415 for (i = 4; i < 6; ++i) {
fe4da5cc 416 dits[0] = rl[i] + drpla[i];
417 dits[1] = dits[0] + drcu[i];
418 dits[2] = dzb[i] / 2.;
419 zpos = dzl[i] + dits[2];
cfce8870 420 gMC->Gsposp("ICO3", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
421 gMC->Gsposp("ICO3", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 422 }
423
424 // EPOXY (layer #5 and #6)
425
cfce8870 426 gMC->Gsvolu("IEPX", "TUBE", idtmed[262], dits, 0);
e8189707 427 for (i = 4; i < 6; ++i) {
fe4da5cc 428 dits[0] = rl[i] + drpla[i] + drcu[i];
429 dits[1] = dits[0] + drepx[i];
430 dits[2] = dzb[i] / 2.;
431 zpos = dzl[i] + dits[2];
cfce8870 432 gMC->Gsposp("IEPX", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
433 gMC->Gsposp("IEPX", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 434 }
435
436 // SILICON (layer #5 and #6)
437
cfce8870 438 gMC->Gsvolu("ISI3", "TUBE", idtmed[251], dits, 0);
e8189707 439 for (i = 4; i < 6; ++i) {
fe4da5cc 440 dits[0] = rl[i] + drpla[i] + drcu[i] + drepx[i];
441 dits[1] = dits[0] + drsi[i];
442 dits[2] = dzb[i] / 2.;
443 zpos = dzl[i] + dits[2];
cfce8870 444 gMC->Gsposp("ISI3", i-1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
445 gMC->Gsposp("ISI3", i+1, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 446 }
447
448 // SUPPORT
449
cfce8870 450 gMC->Gsvolu("ISUP", "TUBE", idtmed[274], dits, 0);
e8189707 451 for (i = 0; i < 6; ++i) {
fe4da5cc 452 dits[0] = rl[i];
7963222e 453 if (i < 5) dits[1] = rl[i+1];
fe4da5cc 454 else dits[1] = rlim;
455 dits[2] = drsu / 2.;
456 zpos = dzl[i] + dzb[i] + dits[2];
cfce8870 457 gMC->Gsposp("ISUP", i+1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
458 gMC->Gsposp("ISUP", i+7, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 459 }
460
461 // CABLES (HORIZONTAL)
462
cfce8870 463 gMC->Gsvolu("ICHO", "TUBE", idtmed[278], dits, 0);
e8189707 464 for (i = 0; i < 6; ++i) {
fe4da5cc 465 dits[0] = rl[i];
466 dits[1] = dits[0] + drca;
467 dits[2] = (rzcone + TMath::Tan(acone) * (rl[i] - rl[0]) - (dzl[i]+ dzb[i] + drsu)) / 2.;
468 zpos = dzl[i - 1] + dzb[i] + drsu + dits[2];
cfce8870 469 gMC->Gsposp("ICHO", i+1, "ITSV", 0., 0., zpos, 0, "ONLY", dits, 3);
470 gMC->Gsposp("ICHO", i+7, "ITSV", 0., 0.,-zpos, 0, "ONLY", dits, 3);
fe4da5cc 471 }
472 // DEFINE A CONICAL GHOST VOLUME FOR THE PHI SEGMENTATION
473 pcits[0] = 0.;
474 pcits[1] = 360.;
475 pcits[2] = 2.;
476 pcits[3] = rzcone;
477 pcits[4] = 3.5;
478 pcits[5] = rl[0];
479 pcits[6] = pcits[3] + TMath::Tan(acone) * (rlim - rl[0]);
480 pcits[7] = rlim - rl[0] + 3.5;
481 pcits[8] = rlim;
cfce8870 482 gMC->Gsvolu("ICMO", "PCON", idtmed[275], pcits, 9);
fe4da5cc 483 AliMatrix(idrotm[200], 90., 0., 90., 90., 180., 0.);
cfce8870 484 gMC->Gspos("ICMO", 1, "ITSV", 0., 0., 0., 0, "ONLY");
485 gMC->Gspos("ICMO", 2, "ITSV", 0., 0., 0., idrotm[200], "ONLY");
fe4da5cc 486
487 // DIVIDE INTO NSEC PHI-SECTIONS
488
cfce8870 489 gMC->Gsdvn("ICMD", "ICMO", nsec, 2);
490 gMC->Gsatt("ICMO", "SEEN", 0);
491 gMC->Gsatt("ICMD", "SEEN", 0);
fe4da5cc 492
493 // CONICAL CABLES
494
495 pcits[2] = 2.;
cfce8870 496 gMC->Gsvolu("ICCO", "PCON", idtmed[278], pcits, 0);
e8189707 497 for (i = 1; i < 6; ++i) {
fe4da5cc 498 pcits[0] = -dphi[i] / 2.;
499 pcits[1] = dphi[i];
500 if (i < 5) {
501 dzco = TMath::Tan(acone) * (rl[i+1] - rl[i]);
502 } else {
503 dzco1 = zmax - (rzcone + TMath::Tan(acone) * (rl[5] - rl[0])) -2.;
504 dzco2 = (rlim - rl[5]) * TMath::Tan(acone);
505 if (rl[5] + dzco1 / TMath::Tan(acone) < rlim) {
506 dzco = dzco1;
507 } else {
508 dzco = dzco2;
509 }
510 }
511 pcits[3] = rzcone + TMath::Tan(acone) * (rl[i] - rl[0]);
512 pcits[4] = rl[i] - drcac[i] / TMath::Sin(acone);
513 pcits[5] = rl[i];
514 pcits[6] = pcits[3] + dzco;
515 pcits[7] = rl[i] + dzco / TMath::Tan(acone) - drcac[i] / TMath::Sin(acone);
516 pcits[8] = rl[i] + dzco / TMath::Tan(acone);
517
cfce8870 518 gMC->Gsposp("ICCO", i, "ICMD", 0., 0., 0., 0, "ONLY", pcits, 9);
fe4da5cc 519
520 }
521 zend = pcits[6];
522 rend = pcits[8];
523
524 // CONICAL CABLES BELOW TPC
525
526 // DEFINE A CONICAL GHOST VOLUME FOR THE PHI SEGMENTATION
527 pcits[0] = 0.;
528 pcits[1] = 360.;
529 pcits[2] = 2.;
530 pcits[3] = zend;
531 pcits[5] = rend;
b6668dd3 532 pcits[4] = pcits[5] - drcatpc;
fe4da5cc 533 pcits[6] = xltpc;
534 pcits[8] = pcits[4] + (pcits[6] - pcits[3]) * TMath::Tan(acable * kDegrad);
b6668dd3 535 pcits[7] = pcits[8] - drcatpc;
fe4da5cc 536 AliMatrix(idrotm[200], 90., 0., 90., 90., 180., 0.);
cfce8870 537 gMC->Gsvolu("ICCM", "PCON", idtmed[275], pcits, 9);
538 gMC->Gspos("ICCM", 1, "ALIC", 0., 0., 0., 0, "ONLY");
539 gMC->Gspos("ICCM", 2, "ALIC", 0., 0., 0., idrotm[200], "ONLY");
540 gMC->Gsdvn("ITMD", "ICCM", nsec, 2);
541 gMC->Gsatt("ITMD", "SEEN", 0);
542 gMC->Gsatt("ICCM", "SEEN", 0);
fe4da5cc 543
544 // NOW PLACE SEGMENTS WITH DECREASING PHI SEGMENTS INTO THE
545 // GHOST-VOLUME
546
547 pcits[2] = 2.;
cfce8870 548 gMC->Gsvolu("ITTT", "PCON", idtmed[278], pcits, 0);
fe4da5cc 549 r0 = rend;
550 z0 = zend;
551 dz = (xltpc - zend) / 9.;
e8189707 552 for (i = 0; i < 9; ++i) {
fe4da5cc 553 zi = z0 + i*dz + dz / 2.;
554 ri = r0 + (zi - z0) * TMath::Tan(acable * kDegrad);
555 dphii = dphi[5] * r0 / ri;
556 pcits[0] = -dphii / 2.;
557 pcits[1] = dphii;
558 pcits[3] = zi - dz / 2.;
559 pcits[5] = r0 + (pcits[3] - z0) * TMath::Tan(acable * kDegrad);
b6668dd3 560 pcits[4] = pcits[5] - drcatpc;
fe4da5cc 561 pcits[6] = zi + dz / 2.;
562 pcits[8] = r0 + (pcits[6] - z0) * TMath::Tan(acable * kDegrad);
b6668dd3 563 pcits[7] = pcits[8] - drcatpc;
fe4da5cc 564
cfce8870 565 gMC->Gsposp("ITTT", i+1, "ITMD", 0., 0., 0., 0, "ONLY", pcits, 9);
fe4da5cc 566 }
567
568 // --- Outputs the geometry tree in the EUCLID/CAD format
569
570 if (fEuclidOut) {
cfce8870 571 gMC->WriteEuclid("ITSgeometry", "ITSV", 1, 5);
fe4da5cc 572 }
573}
fe4da5cc 574//_____________________________________________________________________________
56d6a1ef 575void AliITSv1::CreateMaterials(){
576////////////////////////////////////////////////////////////////////////
c9a71be1 577 //
578 // Create ITS materials
579 // This function defines the default materials used in the Geant
b6668dd3 580 // Monte Carlo simulations for the geometries AliITSv1 and AliITSv3.
581 // In general it is automatically replaced by
c9a71be1 582 // the CreatMaterials routine defined in AliITSv?. Should the function
583 // CreateMaterials not exist for the geometry version you are using this
584 // one is used. See the definition found in AliITSv5 or the other routine
585 // for a complete definition.
586 //
587 // Water H2O
588 Float_t awat[2] = { 1.00794,15.9994 };
589 Float_t zwat[2] = { 1.,8. };
590 Float_t wwat[2] = { 2.,1. };
591 Float_t denswat = 1.;
592 // Freon
593 Float_t afre[2] = { 12.011,18.9984032 };
594 Float_t zfre[2] = { 6.,9. };
595 Float_t wfre[2] = { 5.,12. };
596 Float_t densfre = 1.5;
597 // Ceramics
598 // 94.4% Al2O3 , 2.8% SiO2 , 2.3% MnO , 0.5% Cr2O3
599 Float_t acer[5] = { 26.981539,15.9994,28.0855,54.93805,51.9961 };
600 Float_t zcer[5] = { 13.,8.,14.,25., 24. };
601 Float_t wcer[5] = { .49976,1.01233,.01307, .01782,.00342 };
602 Float_t denscer = 3.6;
603 //
604 // 60% SiO2 , 40% G10FR4
605 // PC board
606 Float_t apcb[3] = { 28.0855,15.9994,17.749 };
607 Float_t zpcb[3] = { 14.,8.,8.875 };
608 Float_t wpcb[3] = { .28,.32,.4 };
609 Float_t denspcb = 1.8;
610 // POLYETHYL
611 Float_t apoly[2] = { 12.01,1. };
612 Float_t zpoly[2] = { 6.,1. };
613 Float_t wpoly[2] = { .33,.67 };
614 // SERVICES
615 Float_t zserv[4] = { 1.,6.,26.,29. };
616 Float_t aserv[4] = { 1.,12.,55.8,63.5 };
617 Float_t wserv[4] = { .014,.086,.42,.48 };
618
b6668dd3 619 Int_t isxfld = gAlice->Field()->Integ();
620 Float_t sxmgmx = gAlice->Field()->Max();
c9a71be1 621
622
623 // --- Define the various materials for GEANT ---
624
625 // 200-224 --> Silicon Pixel Detectors (detectors, chips, buses, cooling,..)
626
627 AliMaterial(0, "SPD Si$", 28.0855, 14., 2.33, 9.36, 999);
628 AliMaterial(1, "SPD Si chip$", 28.0855, 14., 2.33, 9.36, 999);
629 AliMaterial(2, "SPD Si bus$", 28.0855, 14., 2.33, 9.36, 999);
630 AliMaterial(3, "SPD C$", 12.011, 6., 2.265,18.8, 999);
631 // v. dens
632 AliMaterial(4, "SPD Air$", 14.61, 7.3, .001205, 30423., 999);
633 AliMaterial(5, "SPD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
634 AliMaterial(6, "SPD Al$", 26.981539, 13., 2.6989, 8.9, 999);
635 AliMixture( 7, "SPD Water $", awat, zwat, denswat, -2, wwat);
636 AliMixture( 8, "SPD Freon$", afre, zfre, densfre, -2, wfre);
637 // **
b6668dd3 638 AliMedium(0, "SPD Si$", 0, 1,isxfld,sxmgmx, 10., .01, .1, .003, .003);
639 AliMedium(1, "SPD Si chip$", 1, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
640 AliMedium(2, "SPD Si bus$", 2, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
641 AliMedium(3, "SPD C$", 3, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
642 AliMedium(4, "SPD Air$", 4, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
643 AliMedium(5, "SPD Vacuum$", 5, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
644 AliMedium(6, "SPD Al$", 6, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
645 AliMedium(7, "SPD Water $", 7, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
646 AliMedium(8, "SPD Freon$", 8, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
c9a71be1 647
648 // 225-249 --> Silicon Drift Detectors (detectors, chips, buses, cooling,..)
649
650 AliMaterial(25, "SDD Si$", 28.0855, 14., 2.33, 9.36, 999);
651 AliMaterial(26, "SDD Si chip$", 28.0855, 14., 2.33, 9.36, 999);
652 AliMaterial(27, "SDD Si bus$", 28.0855, 14., 2.33, 9.36, 999);
653 AliMaterial(28, "SDD C$", 12.011, 6., 2.265,18.8, 999);
654 // v. dens
655 AliMaterial(29, "SDD Air$", 14.61, 7.3, .001205, 30423., 999);
656 AliMaterial(30, "SDD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
657 AliMaterial(31, "SDD Al$", 26.981539, 13., 2.6989, 8.9, 999);
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(32, "SDD Water $", awat, zwat, denswat, 2, wwat);
663 // After a call with ratios by number (negative number of elements),
664 // the ratio array is changed to the ratio by weight, so all successive
665 // calls with the same array must specify the number of elements as
666 // positive
667 AliMixture( 33, "SDD Freon$", afre, zfre, densfre, 2, wfre);
668 AliMixture( 34, "SDD PCB$", apcb, zpcb, denspcb, 3, wpcb);
669 AliMaterial(35, "SDD Copper$", 63.546, 29., 8.96, 1.43, 999);
670 AliMixture( 36, "SDD Ceramics$", acer, zcer, denscer, -5, wcer);
671 AliMaterial(37, "SDD Kapton$", 12.011, 6., 1.3, 31.27, 999);
672 // **
673 // check A and Z
b6668dd3 674 AliMedium(25, "SDD Si$", 25, 1,isxfld,sxmgmx, 10., .01, .1, .003, .003);
675 AliMedium(26, "SDD Si chip$", 26, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
676 AliMedium(27, "SDD Si bus$", 27, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
677 AliMedium(28, "SDD C$", 28, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
678 AliMedium(29, "SDD Air$", 29, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
679 AliMedium(30, "SDD Vacuum$", 30, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
680 AliMedium(31, "SDD Al$", 31, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
681 AliMedium(32, "SDD Water $", 32, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
682 AliMedium(33, "SDD Freon$", 33, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
683 AliMedium(34, "SDD PCB$", 34, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
684 AliMedium(35, "SDD Copper$", 35, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
685 AliMedium(36, "SDD Ceramics$",36, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
686 AliMedium(37, "SDD Kapton$", 37, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
c9a71be1 687
688 // 250-274 --> Silicon Strip Detectors (detectors, chips, buses, cooling,..)
689
690 AliMaterial(50, "SSD Si$", 28.0855, 14., 2.33, 9.36, 999.);
691 AliMaterial(51, "SSD Si chip$", 28.0855, 14., 2.33, 9.36, 999.);
692 AliMaterial(52, "SSD Si bus$", 28.0855, 14., 2.33, 9.36, 999.);
693 AliMaterial(53, "SSD C$", 12.011, 6., 2.265,18.8, 999.);
694 // v. dens
695 AliMaterial(54, "SSD Air$", 14.61, 7.3, .001205, 30423., 999);
696 AliMaterial(55, "SSD Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
697 AliMaterial(56, "SSD Al$", 26.981539, 13., 2.6989, 8.9, 999);
698 // After a call with ratios by number (negative number of elements),
699 // the ratio array is changed to the ratio by weight, so all successive
700 // calls with the same array must specify the number of elements as
701 // positive
702 AliMixture(57, "SSD Water $", awat, zwat, denswat, 2, wwat);
703 // After a call with ratios by number (negative number of elements),
704 // the ratio array is changed to the ratio by weight, so all successive
705 // calls with the same array must specify the number of elements as
706 // positive
707 AliMixture(58, "SSD Freon$", afre, zfre, densfre, 2, wfre);
708 AliMixture(59, "SSD PCB$", apcb, zpcb, denspcb, 3, wpcb);
709 AliMaterial(60, "SSD Copper$", 63.546, 29., 8.96, 1.43, 999.);
710 // After a call with ratios by number (negative number of elements),
711 // the ratio array is changed to the ratio by weight, so all successive
712 // calls with the same array must specify the number of elements as
713 // positive
714 AliMixture( 61, "SSD Ceramics$", acer, zcer, denscer, 5, wcer);
715 AliMaterial(62, "SSD Kapton$", 12.011, 6., 1.3, 31.27, 999.);
716 // check A and Z
717 AliMaterial(63, "SDD G10FR4$", 17.749, 8.875, 1.8, 21.822, 999.);
718 // **
b6668dd3 719 AliMedium(50, "SSD Si$", 50, 1,isxfld,sxmgmx, 10., .01, .1, .003, .003);
720 AliMedium(51, "SSD Si chip$", 51, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
721 AliMedium(52, "SSD Si bus$", 52, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
722 AliMedium(53, "SSD C$", 53, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
723 AliMedium(54, "SSD Air$", 54, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
724 AliMedium(55, "SSD Vacuum$", 55, 0,isxfld,sxmgmx, 10.,1.00, .1, .100,10.00);
725 AliMedium(56, "SSD Al$", 56, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
726 AliMedium(57, "SSD Water $", 57, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
727 AliMedium(58, "SSD Freon$", 58, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
728 AliMedium(59, "SSD PCB$", 59, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
729 AliMedium(60, "SSD Copper$", 60, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
730 AliMedium(61, "SSD Ceramics$",61, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
731 AliMedium(62, "SSD Kapton$", 62, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
732 AliMedium(63, "SSD G10FR4$", 63, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
c9a71be1 733
734 // 275-299 --> General (end-caps, frames, cooling, cables, etc.)
735
736 AliMaterial(75, "GEN C$", 12.011, 6., 2.265, 18.8, 999.);
737 // verify density
738 AliMaterial(76, "GEN Air$", 14.61, 7.3, .001205, 30423., 999);
739 AliMaterial(77, "GEN Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
740 AliMixture( 78, "GEN POLYETHYL$", apoly, zpoly, .95, -2, wpoly);
741 AliMixture( 79, "GEN SERVICES$", aserv, zserv, 4.68, 4, wserv);
742 AliMaterial(80, "GEN Copper$", 63.546, 29., 8.96, 1.43, 999.);
743 // After a call with ratios by number (negative number of elements),
744 // the ratio array is changed to the ratio by weight, so all successive
745 // calls with the same array must specify the number of elements as
746 // positive
747 AliMixture(81, "GEN Water $", awat, zwat, denswat, 2, wwat);
748 // **
b6668dd3 749 AliMedium(75,"GEN C$", 75, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
750 AliMedium(76,"GEN Air$", 76, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
751 AliMedium(77,"GEN Vacuum$", 77, 0,isxfld,sxmgmx, 10., .10, .1, .100,10.00);
752 AliMedium(78,"GEN POLYETHYL$",78, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
753 AliMedium(79,"GEN SERVICES$", 79, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
754 AliMedium(80,"GEN Copper$", 80, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
755 AliMedium(81,"GEN Water $", 81, 0,isxfld,sxmgmx, 10., .01, .1, .003, .003);
fe4da5cc 756}
fe4da5cc 757//_____________________________________________________________________________
593d2ea1 758void AliITSv1::Init(){
56d6a1ef 759////////////////////////////////////////////////////////////////////////
760// Initialise the ITS after it has been created.
761////////////////////////////////////////////////////////////////////////
e8189707 762
593d2ea1 763 //
764 AliITS::Init();
765 fMajorVersion = 1;
766 fMinorVersion = 0;
fe4da5cc 767}
768
769//_____________________________________________________________________________
56d6a1ef 770void AliITSv1::DrawModule(){
771////////////////////////////////////////////////////////////////////////
772// Draw a shaded view of the FMD version 1.
773////////////////////////////////////////////////////////////////////////
fe4da5cc 774
775 // Set everything unseen
cfce8870 776 gMC->Gsatt("*", "seen", -1);
fe4da5cc 777 //
778 // Set ALIC mother visible
cfce8870 779 gMC->Gsatt("ALIC","SEEN",0);
fe4da5cc 780 //
781 // Set the volumes visible
cfce8870 782 gMC->Gsatt("ITSV","SEEN",0);
783 gMC->Gsatt("ITS1","SEEN",1);
784 gMC->Gsatt("ITS2","SEEN",1);
785 gMC->Gsatt("ITS3","SEEN",1);
786 gMC->Gsatt("ITS4","SEEN",1);
787 gMC->Gsatt("ITS5","SEEN",1);
788 gMC->Gsatt("ITS6","SEEN",1);
fe4da5cc 789
cfce8870 790 gMC->Gsatt("IPCB","SEEN",1);
791 gMC->Gsatt("ICO2","SEEN",1);
792 gMC->Gsatt("ICER","SEEN",0);
793 gMC->Gsatt("ISI2","SEEN",0);
794 gMC->Gsatt("IPLA","SEEN",0);
795 gMC->Gsatt("ICO3","SEEN",0);
796 gMC->Gsatt("IEPX","SEEN",0);
797 gMC->Gsatt("ISI3","SEEN",1);
798 gMC->Gsatt("ISUP","SEEN",0);
799 gMC->Gsatt("ICHO","SEEN",0);
800 gMC->Gsatt("ICMO","SEEN",0);
801 gMC->Gsatt("ICMD","SEEN",0);
802 gMC->Gsatt("ICCO","SEEN",1);
803 gMC->Gsatt("ICCM","SEEN",0);
804 gMC->Gsatt("ITMD","SEEN",0);
805 gMC->Gsatt("ITTT","SEEN",1);
fe4da5cc 806
807 //
cfce8870 808 gMC->Gdopt("hide", "on");
809 gMC->Gdopt("shad", "on");
810 gMC->Gsatt("*", "fill", 7);
811 gMC->SetClipBox(".");
812 gMC->SetClipBox("*", 0, 300, -300, 300, -300, 300);
813 gMC->DefaultRange();
814 gMC->Gdraw("alic", 40, 30, 0, 11, 10, .07, .07);
815 gMC->Gdhead(1111, "Inner Tracking System Version 1");
816 gMC->Gdman(17, 6, "MAN");
fe4da5cc 817}
fe4da5cc 818//_____________________________________________________________________________
56d6a1ef 819void AliITSv1::StepManager(){
820////////////////////////////////////////////////////////////////////////
821// Called for every step in the ITS, then calles the AliITShit class
822// creator with the information to be recoreded about that hit.
823////////////////////////////////////////////////////////////////////////
fe4da5cc 824 Int_t copy, id;
58005f18 825 Float_t hits[8];
826 Int_t vol[4];
0a6d8768 827 TLorentzVector position, momentum;
fe4da5cc 828 TClonesArray &lhits = *fHits;
fe4da5cc 829 //
58005f18 830 // Track status
831 vol[3] = 0;
832 if(gMC->IsTrackInside()) vol[3] += 1;
833 if(gMC->IsTrackEntering()) vol[3] += 2;
834 if(gMC->IsTrackExiting()) vol[3] += 4;
835 if(gMC->IsTrackOut()) vol[3] += 8;
836 if(gMC->IsTrackDisappeared()) vol[3] += 16;
837 if(gMC->IsTrackStop()) vol[3] += 32;
838 if(gMC->IsTrackAlive()) vol[3] += 64;
839 //
840 // Fill hit structure.
56d6a1ef 841 if( !(gMC->TrackCharge()) ) return;
fe4da5cc 842 //
843 // Only entering charged tracks
58005f18 844 if((id=gMC->CurrentVolID(copy))==fIdSens[0]) {
fe4da5cc 845 vol[0]=1;
0a6d8768 846 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 847 vol[1]=copy;
0a6d8768 848 id=gMC->CurrentVolOffID(2,copy);
fe4da5cc 849 vol[2]=copy;
58005f18 850 } else if(id==fIdSens[1]) {
fe4da5cc 851 vol[0]=2;
0a6d8768 852 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 853 vol[1]=copy;
0a6d8768 854 id=gMC->CurrentVolOffID(2,copy);
fe4da5cc 855 vol[2]=copy;
58005f18 856 } else if(id==fIdSens[2]) {
fe4da5cc 857 vol[0]=3;
858 vol[1]=copy;
0a6d8768 859 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 860 vol[2]=copy;
58005f18 861 } else if(id==fIdSens[3]) {
fe4da5cc 862 vol[0]=4;
863 vol[1]=copy;
0a6d8768 864 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 865 vol[2]=copy;
58005f18 866 } else if(id==fIdSens[4]) {
fe4da5cc 867 vol[0]=5;
868 vol[1]=copy;
0a6d8768 869 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 870 vol[2]=copy;
58005f18 871 } else if(id==fIdSens[5]) {
fe4da5cc 872 vol[0]=6;
873 vol[1]=copy;
0a6d8768 874 id=gMC->CurrentVolOffID(1,copy);
fe4da5cc 875 vol[2]=copy;
876 } else return;
cfce8870 877 gMC->TrackPosition(position);
878 gMC->TrackMomentum(momentum);
fe4da5cc 879 hits[0]=position[0];
880 hits[1]=position[1];
881 hits[2]=position[2];
0a6d8768 882 hits[3]=momentum[0];
883 hits[4]=momentum[1];
58005f18 884 hits[5]=momentum[2];
cfce8870 885 hits[6]=gMC->Edep();
58005f18 886 hits[7]=gMC->TrackTime();
fe4da5cc 887 new(lhits[fNhits++]) AliITShit(fIshunt,gAlice->CurrentTrack(),vol,hits);
fe4da5cc 888}
593d2ea1 889//____________________________________________________________________________
56d6a1ef 890void AliITSv1::Streamer(TBuffer &R__b){
891////////////////////////////////////////////////////////////////////////
892// A dummy Streamer function for this class AliITSv1. By default it
893// only streams the AliITS class as it is required. Since this class
894// dosen't contain any "real" data to be saved, it doesn't.
895////////////////////////////////////////////////////////////////////////
593d2ea1 896
897 if (R__b.IsReading()) {
898 Version_t R__v = R__b.ReadVersion(); if (R__v) { }
899 AliITS::Streamer(R__b);
593d2ea1 900 } else {
901 R__b.WriteVersion(AliITSv1::IsA());
902 AliITS::Streamer(R__b);
56d6a1ef 903 } // end if R__b.IsReading()
593d2ea1 904}