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Prototype for PMD reconstructed hits (AliPMDRecPoint) added.
[u/mrichter/AliRoot.git] / PMD / AliPMDv0.cxx
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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$Log$
94de3818 18Revision 1.7 1999/10/06 13:05:52 fca
19Temporary fix to keep the code working waiting for Y.Viyogi
20
acfb3a8d 21Revision 1.6 1999/09/29 09:24:28 fca
22Introduction of the Copyright and cvs Log
23
4c039060 24*/
25
6edc06da 26///////////////////////////////////////////////////////////////////////////////
27// //
28// Photon Multiplicity Detector Version 1 //
29// //
30//Begin_Html
31/*
1439f98e 32<img src="picts/AliPMDv0Class.gif">
6edc06da 33*/
34//End_Html
35// //
36///////////////////////////////////////////////////////////////////////////////
37#include "AliPMDv0.h"
38#include "AliRun.h"
39#include "AliMC.h"
40#include "AliConst.h"
94de3818 41#include "AliMagF.h"
6edc06da 42
43static Float_t smod2[3], smod3[3], smod4[3];
44static Int_t maxbox, kdet;
45static Float_t thgas,thmin,thmax,zdist,zdist1,thlow,
46 thhigh,edge;
47static Int_t numqu;
48static Float_t xbox[40][40], ybox[40][40];
49static Int_t pindex[40][40];
50
51ClassImp(AliPMDv0)
52//_____________________________________________________________________________
53AliPMDv0::AliPMDv0() : AliPMD()
54{
55 //
56 // Default constructor
57 //
58 fMedSens=0;
59}
60
61//_____________________________________________________________________________
62AliPMDv0::AliPMDv0(const char *name, const char *title)
63 : AliPMD(name,title)
64{
65 //
66 // Standard constructor
67 //
68 fMedSens=0;
69}
70
71//_____________________________________________________________________________
72void AliPMDv0::Coordnew()
73{
74 //
75 // Find coordinates for pad geometry
76 //
77 // Author Y.P. Viyogi, VECC Calcutta
78 //
79
80 Float_t th1, th2, dbox, dist;
81 //Float_t xoff[40][40], yoff[40][40];
82 Int_t i, j, nbox;
83 Float_t rlow;
84 Int_t xoff1[3], yoff1[3], l;
85 Float_t rhigh, dmax, hole;
86 Int_t kk, nhol;
87 Float_t rr, xx, yy;
88
89 th1 = thmin * kPI / 180;
90 th2 = thmax * kPI / 180;
91 /* ESTIMATES FOR OCTAGON */
92 dist = zdist * TMath::Tan(th2);
93 /* *** 04.06.97 Fixed Module size of 6 cm, 0 mm boundary. */
94 /* *** variable pad sizes of 0.3 mm, 0.5 mm, 1.0 mm and 1.2 mm */
95 dbox = edge * 2 + 24;
96 maxbox = Int_t(dist / dbox + .5);
97 dmax= maxbox * dbox;
98 /* NOW GET THE HOLE SIZE ETC. */
99 hole = zdist * TMath::Tan(th1);
100 nhol = Int_t(hole / dbox + .5);
101 hole = nhol * dbox;
102
103 rlow = zdist * TMath::Tan(thlow * kPI / 180);
104 rhigh = zdist * TMath::Tan(thhigh * kPI / 180);
105 for (i = 1; i <= 40; ++i) {
106 for (j = 1; j <= 40; ++j) {
107 //index[j][i] = 0;
108 //xoff[j][i] = 0;
109 //yoff[j][i] = 0;
110 xbox[j][i] = 0;
111 /* L5: */
112 ybox[j][i] = 0;
113 }
114 }
115
116 // NOW START PLACING THE BOXES IN VARIOUS LAYERS, START FROM THE CENTRE
117
118 yy = dbox / 2;
119 for(i=0;i<3;i++) yoff1[i]=0;
120 nbox = 0;
121 // PRINT*,'MAXBOX=',MAXBOX
122 for (i = 1; i <= maxbox; ++i) {
123 xx = dbox / 2;
124 for(j=0;j<3;j++) xoff1[j]=0;
125 for (j = 1; j <= maxbox; ++j) {
126 rr = sqrt(xx*xx+yy*yy);
127 if (rr >= hole && rr <= dmax) {
128 // BOX CAN BE FITTED
129 //index[j][i] = 2;
130 //if (rr < rlow) index[j][i] = 1;
131 //else if (rr > rhigh) index[j][i] = 3;
132 xbox[j][i] = xx;
133 ybox[j][i] = yy;
134 ++nbox;
135 //xoff[j][i] = xoff1[index[j][i] - 1];
136 //yoff[j][i] = yoff1[index[j][i] - 1];
137 }
138 if (kdet == 1) kk = 1; else kk = 0;
139 for (l = 1; l <= 3; ++l)
140 xoff1[l - 1] += fNumPads[l + kk - 1];
141 xx += dbox;
142 }
143
144 if (kdet == 1) kk = 1; else kk=0;
145
146 for (l = 1; l <= 3; ++l)
147 yoff1[l - 1] += fNumPads[l + kk - 1];
148 yy += dbox;
149 }
150}
151
152//_____________________________________________________________________________
153void AliPMDv0::Coordinates()
154{
155 //
156 // SUBROUTINE TO COMPUTE THE X- AND Y- COORDINATES OF THE BOXES
157 // WHICH CAN FIT INTO THE CIRCULAR REGION BETWEEN THE GIVEN ANGLES.
158 // INPUT : ZDIST, THMIN, THMAX, PADSIZE (FOR INSIDE and OUTSIDE PMD).
159 // ALL DIMENSIONS IN CM.
160 // -- Author : Y.P. VIYOGI, 10/05/1996.
161
162 Float_t hole, dmax, dbox;
163 Int_t nhol;
164 Float_t dist;
165 Int_t nbox;
166 Float_t rlow;
167 Int_t i, j;
168 Float_t rhigh, rr, xx, yy, th1, th2;
169
170 th1 = thmin*kPI/180;
171 th2 = thmax*kPI/180;
172 // ESTIMATES FOR OCTAGON
173 dist = zdist * TMath::Tan(th2);
174 // *** 04.06.97 Fixed Module size of 24 cm, 3 mm boundary.
175 // *** variable pad sizes of 8 mm, 10 mm, 12mm and 15 mm
176 dbox = edge*2 + 24.;
177 maxbox = Int_t(dist / dbox + .5);
178 dmax = maxbox*dbox;
179 // NOW GET THE HOLE SIZE ETC.
180 hole = zdist * TMath::Tan(th1);
181 nhol = Int_t(hole / dbox + .5);
182 hole = nhol * dbox;
183
184 rlow = zdist * TMath::Tan(thlow*kPI/180);
185 rhigh = zdist * TMath::Tan(thhigh*kPI/180);
186 for (i = 0; i < 40; ++i) {
187 for (j = 0; j < 40; ++j) {
188 pindex[j][i] = 0;
189 xbox[j][i] = 0;
190 ybox[j][i] = 0;
191 }
192 }
193
194 // NOW START PLACING THE BOXES IN VARIOUS LAYERS, START FROM THE CENTRE
195 yy = dbox / 2;
196 nbox = 0;
197 for (i = 0; i < maxbox; ++i) {
198 xx = dbox / 2;
199 for (j = 0; j < maxbox; ++j) {
200 rr = TMath::Sqrt(xx*xx + yy*yy);
201 if (rr >= hole && rr <= dmax) { // BOX CAN BE FITTED
202 pindex[j][i] = 2;
203 if (rr < rlow) pindex[j][i] = 1;
204 if (rr > rhigh) pindex[j][i] = 3;
205 xbox[j][i] = xx;
206 ybox[j][i] = yy;
207 ++nbox;
208 }
209 xx += dbox;
210 }
211 yy += dbox;
212 }
213}
214
215//_____________________________________________________________________________
216void AliPMDv0::CreateGeometry()
217{
218 //
219 // Create geometry for Photon Multiplicity Detector Version 1
220 //
221 //Begin_Html
222 /*
1439f98e 223 <img src="picts/AliPMDv0.gif">
6edc06da 224 */
225 //End_Html
226 //Begin_Html
227 /*
1439f98e 228 <img src="picts/AliPMDv0Tree.gif">
6edc06da 229 */
230 //End_Html
231 CreatePads();
232 CreateInside();
233}
234
235//_____________________________________________________________________________
236void AliPMDv0::CreateInside()
237{
238 //
239 // Create inside of Pads
240 //
241 // -- Author : Y.P. VIYOGI, 07/05/1996.
242 // -- Modified: P.V.K.S.Baba(JU), 15-12-97.
243
244 Float_t sipmd[3] = { 300.,300.,5. };
245
246 Int_t i2;
247
248 Float_t xiqa[4], yiqa[4];
249 Int_t inum2, inum3, inum4, i, j, k;
250 Float_t siqad[4];
251 Float_t zd, xd, yd, xp, yp, zp;
252 Int_t idrotm[100];
253
ad51aeb0 254 Int_t *idtmed = fIdtmed->GetArray()-599;
6edc06da 255
256 // VOLUMES Names : begining with D for all PMD volumes,
257 // The names of SIZE variables begin with S and have more meaningful
258 // characters as shown below.
259
260 // VOLUME SIZE MEDIUM : REMARKS
261 // ------ ----- ------ : ---------------------------
262
263 // DPMD SIPMD AIR : INSIDE PMD and its SIZE
264
265
266
267 // *** Define the DPMD Volume and fill with air ***
268
cfce8870 269 gMC->Gsvolu("DPMD", "BOX ", idtmed[698], sipmd, 3);
6edc06da 270
271 // *** Define DIQU Volume and fill with air
272 siqad[0] = sipmd[0] / 2. - 1.;
273 siqad[1] = sipmd[1] / 2. - 1.;
274 siqad[2] = sipmd[2];
cfce8870 275 gMC->Gsvolu("DIQU","BOX ", idtmed[698], siqad, 3);
276 gMC->Gsatt("DIQU", "SEEN", 1);
6edc06da 277
278
279 // --- Place the modules in INSIDE PMD (DPMD)
280 // --- FIRST CALCULATE THE COORDINATES OF THE MODULES WHICH CAN BE
281 // --- ACCOMODATED.
282
283 kdet = 1;
284 Coordinates();
285
286 //inum = 0;
287 zd = 0.;
288 AliMatrix(idrotm[1], 90., 0., 90., 90., 0., 0.);
289 AliMatrix(idrotm[2], 90., 180., 90., 90., 0., 0.);
290 AliMatrix(idrotm[3], 90., 180., 90., 270., 0., 0.);
291 AliMatrix(idrotm[4], 90., 0., 90., 270., 0., 0.);
292 // **** Filling the DIQU Vol. (One Quadrant)
293 inum2 = 0;
294 inum3 = 0;
295 inum4 = 0;
296 for (i = 0; i < maxbox; ++i) {
297 i2 = maxbox;
298 for (j = 0; j < i2; ++j) {
299 if (xbox[j][i] <= 0 && ybox[j][i] <= 0) continue;
300 xd = xbox[j][i] - siqad[0];
301 yd = ybox[j][i] - siqad[1];
302 if (pindex[j][i] == 1) {
303 ++inum2;
cfce8870 304 gMC->Gsposp("DM11", inum2, "DIQU", xd, yd, zd, 0, "ONLY", smod2, 3);
6edc06da 305 }
306 if (pindex[j][i] == 2) {
307 ++inum3;
cfce8870 308 gMC->Gsposp("DM12", inum3, "DIQU", xd, yd, zd, 0, "ONLY", smod3, 3);
6edc06da 309 }
310 if (pindex[j][i] == 3) {
311 ++inum4;
cfce8870 312 gMC->Gsposp("DM13", inum4, "DIQU", xd, yd, zd, 0, "ONLY", smod4, 3);
6edc06da 313 }
314 }
315 }
316 xiqa[0] = siqad[0];
317 xiqa[1] = -siqad[0];
318 xiqa[2] = xiqa[1];
319 xiqa[3] = xiqa[0];
320 yiqa[0] = siqad[0];
321 yiqa[1] = yiqa[0];
322 yiqa[2] = -siqad[0];
323 yiqa[3] = yiqa[2];
324 i2 = numqu;
325 for (k = 1; k <= i2; ++k) {
cfce8870 326 gMC->Gsposp("DIQU", k, "DPMD", xiqa[k-1], yiqa[k-1], zd, idrotm[k], "ONLY", siqad, 3);
6edc06da 327 }
328
329 // --- Place the DPMD in ALICE with front edge 6.0m from vertex ---
330 xp = 0.;
331 yp = 0.;
332 zp = zdist1;
cfce8870 333 gMC->Gspos("DPMD", 1, "ALIC", xp, yp, zp, 0, "ONLY");
6edc06da 334
335}
336
337//_____________________________________________________________________________
338void AliPMDv0::CreatePads()
339{
340 //
341 // Create the geometry of the pads
342 // *** DEFINITION OF THE GEOMETRY OF THE PMD ***
343 // *** DIFFERENT PADS WITH SIZES 8 MM, 10 MM, 12 MM AND 15 MM SQUARE
344 // -- Author : Y.P. VIYOGI, 04/06/1997.
345 // -- Modified: P.V.K.S.Baba(JU), 13-12-97.
346
6edc06da 347 Int_t npad2;
348 Float_t /* scpv1[3], */ scpv2[3] /*, scpv3[3], scpv4[3] */;
349 Float_t spsw1[3], spsw2[3];//, spsw3[3], spsw4[3];
350 Float_t sw[3], xc, yc, zc;
351 Float_t sfe[3];
352 Float_t spb[3], pad1, pad2, pad3, pad4;
353 // VOLUMES Names : begining with D for all PMD volumes,
354
355 // DM11 : MODULE TYPE
356
357 // The names of SIZE variables begin with S and have more meaningful
358 // characters as shown below.
359
360 // VOLUME SIZE MEDIUM : REMARKS
361 // ------ ----- ------ : ---------------------------
362
363 // DPPB SPB PB : PB Converter and its SIZE
364 // DPFE SFE FE : FE Support Plate and its SIZE
365
366 // DW11 SPSW3 G10 : PRESHOWER
367 // DV11 SCPV3 G10 : CPV
368 // ****************** VOLUME TREE ******************
369
370 // DM11 (Module)
371 // |
372 // |
373 // -------------------------------------------------
374 // | | | |
375 // | | | |
376 // DV11( CPV) DPFE DPPB DW11(Preshower)
377 // ************************************************************
378
379
380
ad51aeb0 381 Int_t *idtmed = fIdtmed->GetArray()-599;
6edc06da 382
383 thgas = fPar[2];
384 thmin = fIn[0];
385 thmax = fIn[1];
386 zdist1 = fIn[2];
387 zdist = TMath::Abs(zdist1);
388 thlow = fIn[3];
389 thhigh = fIn[4];
390 edge = fGeo[1];
391 numqu = Int_t(fGeo[2]);
392
393 pad1 = fPadSize[0];
394 pad2 = fPadSize[1];
395 pad3 = fPadSize[2];
396 pad4 = fPadSize[3];
397 npad2 = Int_t(24/fPadSize[1]);
398
399 spsw2[0] = (npad2 * pad2)/2 + edge;
400 spsw2[1] = spsw2[0];
401 spsw2[2] = (thgas + .4) / 2;
402 scpv2[0] = spsw2[0];
403 scpv2[1] = spsw2[1];
404 scpv2[2] = spsw2[2];
405// The modules (DW11 and DV11 are filed with gas, G10 plate is ignored)
cfce8870 406 gMC->Gsvolu("DW11","BOX ", idtmed[604], spsw2, 3);
407 gMC->Gsatt("DW11", "SEEN", 1);
408 gMC->Gsvolu("DV11","BOX ", idtmed[604], spsw2, 3);
409 gMC->Gsatt("DV11", "SEEN", 1);
6edc06da 410
411 // --- DEFINE MODULES, IRON, TUNGSTEN AND LEAD VOLUMES
acfb3a8d 412
413 // This mod by fca, waiting for Yogendra Viyogi answer
414 spsw1[0] = spsw2[0];
415 spsw1[1] = spsw2[1];
416 spsw1[2] = spsw2[2];
417 // End of fca mod
6edc06da 418
419
420 spb[0] = spsw1[0];
421 spb[1] = spsw1[1];
422 spb[2] = .75;
cfce8870 423 gMC->Gsvolu("DPPB","BOX ", idtmed[600], spb, 3);
424 gMC->Gsatt("DPPB", "SEEN", 1);
6edc06da 425
426 sw[0] = spsw1[0];
427 sw[1] = spsw1[1];
428 sw[2] = 0.9/2.;
cfce8870 429 gMC->Gsvolu("DPW ","BOX ", idtmed[600], sw, 3);
430 gMC->Gsatt("DPW ", "SEEN", 1);
6edc06da 431
432 sfe[0] = spsw1[0];
433 sfe[1] = spsw1[1];
434 sfe[2] = 0.6/2.;
cfce8870 435 gMC->Gsvolu("DPFE","BOX ", idtmed[605], sfe, 3);
436 gMC->Gsatt("DPFE", "SEEN", 1);
6edc06da 437
438 smod2[0] = spsw2[0];
439 smod2[1] = smod2[0];
440 smod2[2] = spsw2[2] + sfe[2] + spb[2] + scpv2[2];
cfce8870 441 gMC->Gsvolu("DM11", "BOX ", idtmed[698], smod2, 3);
6edc06da 442
443 // --- place gas box (as CPV), iron support, lead converter and gas box
444 // --- (preshower) in the module
445 xc = 0.;
446 yc = 0.;
447 // --- First the CPV box
448 zc = -(spsw2[2] + sfe[2] + spb[2] + spsw2[2]) + spsw2[2];
cfce8870 449 gMC->Gspos("DV11", 1, "DM11", xc, yc, zc, 0, "ONLY");
6edc06da 450 // --- Then iron support plate
451 zc = zc + sfe[2] + spsw2[2];
cfce8870 452 gMC->Gspos("DPFE", 1, "DM11", xc, yc, zc, 0, "ONLY");
6edc06da 453 // --- Then lead converter plate
454 zc = zc + sfe[2] + spb[2];
cfce8870 455 gMC->Gspos("DPPB", 1, "DM11", xc, yc, zc, 0, "ONLY");
6edc06da 456 // --- Lastly the preshower box
457 zc = zc + spb[2] + spsw2[2];
cfce8870 458 gMC->Gspos("DW11", 1, "DM11", xc, yc, zc, 0, "ONLY");
6edc06da 459
460}
461
462//_____________________________________________________________________________
463void AliPMDv0::DrawModule()
464{
465 //
466 // Draw a shaded view of the Photon Multiplicity Detector
467 //
468
cfce8870 469 gMC->Gsatt("*", "seen", -1);
470 gMC->Gsatt("alic", "seen", 0);
6edc06da 471 //
472 // Set the visibility of the components
473 //
cfce8870 474 gMC->Gsatt("DW11","seen",0);
475 gMC->Gsatt("DV11","seen",0);
476 gMC->Gsatt("DPPB","seen",1);
477 gMC->Gsatt("DPW ","seen",1);
478 gMC->Gsatt("DPFE","seen",1);
479 gMC->Gsatt("DM11","seen",1);
480 gMC->Gsatt("DPMD","seen",0);
481 gMC->Gsatt("DIQU","seen",0);
6edc06da 482 //
cfce8870 483 gMC->Gdopt("hide", "on");
484 gMC->Gdopt("shad", "on");
485 gMC->Gsatt("*", "fill", 7);
486 gMC->SetClipBox(".");
487 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
488 gMC->DefaultRange();
489 gMC->Gdraw("alic", 40, 30, 0, 22, 15.5, .04, .04);
490 gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1");
491 gMC->Gdman(17, 5, "MAN");
492 gMC->Gdopt("hide", "off");
6edc06da 493}
494
495//_____________________________________________________________________________
496void AliPMDv0::CreateMaterials()
497{
498 //
499 // Create materials for the PMD version 1
500 //
501 // ORIGIN : Y. P. VIYOGI
502 //
503
6edc06da 504 // --- The Argon- CO2 mixture ---
505 Float_t ag[2] = { 39.95 };
506 Float_t zg[2] = { 18. };
507 Float_t wg[2] = { .8,.2 };
508 Float_t dar = .001782; // --- Ar density in g/cm3 ---
509 // --- CO2 ---
510 Float_t ac[2] = { 12.,16. };
511 Float_t zc[2] = { 6.,8. };
512 Float_t wc[2] = { 1.,2. };
513 Float_t dc = .001977;
514 Float_t dco = .002; // --- CO2 density in g/cm3 ---
515
516 Float_t absl, radl, a, d, z;
517 Float_t dg;
518 Float_t x0ar;
519 Float_t buf[1];
520 Int_t nbuf;
521
ad51aeb0 522 Int_t *idtmed = fIdtmed->GetArray()-599;
6edc06da 523 Int_t isxfld = gAlice->Field()->Integ();
524 Float_t sxmgmx = gAlice->Field()->Max();
525
526 // --- Define the various materials for GEANT ---
527 AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5);
528 x0ar = 19.55 / dar;
529 AliMaterial(2, "Argon$", 39.95, 18., dar, x0ar, 6.5e4);
530 AliMixture(3, "CO2 $", ac, zc, dc, -2, wc);
531 AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5);
532 AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5);
533 AliMaterial(7, "W $", 183.85, 74., 19.3, .35, 10.3);
534 AliMaterial(8, "G10 $", 20., 10., 1.7, 19.4, 999);
535 AliMaterial(9, "SILIC$", 28.09, 14., 2.33, 9.36, 45.);
536 AliMaterial(10, "Be $", 9.01, 4., 1.848, 35.3, 36.7);
537 AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.);
538 AliMaterial(16, "C $", 12.01, 6., 2.265, 18.8, 49.9);
539
540 AliMaterial(96, "MYLAR$", 8.73, 4.55, 1.39, 28.7, 62.);
541 AliMaterial(97, "CONCR$", 20., 10., 2.5, 10.7, 40.);
542 AliMaterial(98, "Vacum$", 1e-9, 1e-9, 1e-9, 1e16, 1e16);
543 AliMaterial(99, "Air $", 14.61, 7.3, .0012, 30420., 67500.);
544
545 // define gas-mixtures
546
547 char namate[21];
cfce8870 548 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
6edc06da 549 ag[1] = a;
550 zg[1] = z;
551 dg = (dar * 4 + dco) / 5;
552 AliMixture(5, "ArCO2$", ag, zg, dg, 2, wg);
553
554 // Define tracking media
ad51aeb0 555 AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
556 AliMedium(7, "W conv.$", 7, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
557 AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
558 AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
559 AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
560 AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
561 AliMedium(9, "SILICON $", 9, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
562 AliMedium(10, "Be $", 10, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
563 AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .1, 10);
564 AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .1, .1);
565 AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
566 AliMedium(16, "C $", 16, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
6edc06da 567
568 // --- Generate explicitly delta rays in the iron, aluminium and lead ---
cfce8870 569 gMC->Gstpar(idtmed[600], "LOSS", 3.);
570 gMC->Gstpar(idtmed[600], "DRAY", 1.);
6edc06da 571
cfce8870 572 gMC->Gstpar(idtmed[603], "LOSS", 3.);
573 gMC->Gstpar(idtmed[603], "DRAY", 1.);
6edc06da 574
cfce8870 575 gMC->Gstpar(idtmed[604], "LOSS", 3.);
576 gMC->Gstpar(idtmed[604], "DRAY", 1.);
6edc06da 577
cfce8870 578 gMC->Gstpar(idtmed[605], "LOSS", 3.);
579 gMC->Gstpar(idtmed[605], "DRAY", 1.);
6edc06da 580
cfce8870 581 gMC->Gstpar(idtmed[606], "LOSS", 3.);
582 gMC->Gstpar(idtmed[606], "DRAY", 1.);
6edc06da 583
cfce8870 584 gMC->Gstpar(idtmed[607], "LOSS", 3.);
585 gMC->Gstpar(idtmed[607], "DRAY", 1.);
6edc06da 586
587 // --- Energy cut-offs in the Pb and Al to gain time in tracking ---
588 // --- without affecting the hit patterns ---
cfce8870 589 gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4);
590 gMC->Gstpar(idtmed[600], "CUTELE", 1e-4);
591 gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4);
592 gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4);
593 gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4);
594 gMC->Gstpar(idtmed[605], "CUTELE", 1e-4);
595 gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4);
596 gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4);
597 gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4);
598 gMC->Gstpar(idtmed[606], "CUTELE", 1e-4);
599 gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4);
600 gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4);
601 gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4);
602 gMC->Gstpar(idtmed[603], "CUTELE", 1e-4);
603 gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4);
604 gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4);
605 gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4);
606 gMC->Gstpar(idtmed[609], "CUTELE", 1e-4);
607 gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4);
608 gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4);
6edc06da 609
610 // --- Prevent particles stopping in the gas due to energy cut-off ---
cfce8870 611 gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5);
612 gMC->Gstpar(idtmed[604], "CUTELE", 1e-5);
613 gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5);
614 gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5);
615 gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5);
6edc06da 616}
617
618//_____________________________________________________________________________
619void AliPMDv0::Init()
620{
621 //
622 // Initialises PMD detector after it has been built
623 //
624 Int_t i;
625 kdet=1;
626 //
627 printf("\n");
628 for(i=0;i<35;i++) printf("*");
629 printf(" PMD_INIT ");
630 for(i=0;i<35;i++) printf("*");
631 printf("\n");
632 printf(" PMD simulation package initialised\n");
633 printf(" parameters of pmd\n");
634 printf("%6d %10.2f %10.2f %10.2f %10.2f %10.2f\n",kdet,thmin,thmax,zdist,thlow,thhigh);
635 //
636 for(i=0;i<80;i++) printf("*");
637 printf("\n");
638 //
ad51aeb0 639 Int_t *idtmed = fIdtmed->GetArray()-599;
6edc06da 640 fMedSens=idtmed[605-1];
641}
642
643//_____________________________________________________________________________
644void AliPMDv0::StepManager()
645{
646 //
647 // Called at each step in the PMD
648 //
649 Int_t copy;
650 Float_t hits[4], destep;
651 Float_t center[3] = {0,0,0};
652 Int_t vol[5];
0a6d8768 653 const char* namep;
6edc06da 654
cfce8870 655 if(gMC->GetMedium() == fMedSens && (destep = gMC->Edep())) {
6edc06da 656
0a6d8768 657 gMC->CurrentVolID(copy);
6edc06da 658 vol[0]=copy;
0a6d8768 659 gMC->CurrentVolOffID(1,copy);
6edc06da 660 vol[1]=copy;
0a6d8768 661 gMC->CurrentVolOffID(2,copy);
662 namep=gMC->CurrentVolOffName(2);
6edc06da 663 vol[2]=copy;
664 if(strncmp(namep,"DW11",4))vol[2]=1;
665 if(strncmp(namep,"DV11",4))vol[2]=2;
0a6d8768 666 gMC->CurrentVolOffID(3,copy);
6edc06da 667 vol[3]=copy;
0a6d8768 668 gMC->CurrentVolOffID(4,copy);
6edc06da 669 vol[4]=copy;
cfce8870 670 gMC->Gdtom(center,hits,1);
6edc06da 671 hits[3] = destep*1e9; //Number in eV
672 AddHit(gAlice->CurrentTrack(), vol, hits);
673 }
674}