1 /***************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 Revision 1.32 2003/11/03 11:53:05 bnandi
18 global variables are removed
20 Revision 1.31 2003/10/31 12:25:36 bnandi
21 variable names are changed according to ALICE convention
23 Revision 1.30 2003/10/23 16:32:19 hristov
24 MC-dependent part of AliRun extracted in AliMC (F.Carminati)
26 Revision 1.29 2003/10/13 05:28:59 bnandi
27 gaspmd[2] value changed 0.25->7.0 because of overlap
29 Revision 1.28 2003/10/08 12:59:08 bnandi
32 Revision 1.27 2003/10/08 12:56:58 bnandi
33 gaspmd[2] value changed from 7.0 to 0.25
35 Revision 1.26 2003/10/03 06:04:10 bnandi
36 z_psa and z_psb bugs fixed
38 Revision 1.25 2003/10/01 11:08:04 bnandi
41 Revision 1.24 2003/10/01 08:32:51 hristov
42 CurrentTrack replaced by GetCurrentTrackNumber
44 Revision 1.23 2003/10/01 05:07:51 bnandi
45 New geometry in new Alice Coordinate system
47 New rectangular geometry for ALICE PMD - Bedanga Mohanty and Y. P. Viyogi
51 ///////////////////////////////////////////////////////////////////////////////
53 // Photon Multiplicity Detector Version 1 //
57 <img src="picts/AliPMDv1Class.gif">
61 ///////////////////////////////////////////////////////////////////////////////
68 #include "Riostream.h"
69 #include <TVirtualMC.h>
72 const Int_t AliPMDv1::fgkNcolUM1 = 48; // Number of cols in UM, type 1
73 const Int_t AliPMDv1::fgkNcolUM2 = 96; // Number of cols in UM, type 2
74 const Int_t AliPMDv1::fgkNrowUM1 = 96; // Number of rows in UM, type 1
75 const Int_t AliPMDv1::fgkNrowUM2 = 48; // Number of rows in UM, type 2
76 const Float_t AliPMDv1::fgkCellRadius = 0.25; // Radius of a hexagonal cell
77 const Float_t AliPMDv1::fgkCellWall = 0.02; // Thickness of cell Wall
78 const Float_t AliPMDv1::fgkCellDepth = 0.50; // Gas thickness
79 const Float_t AliPMDv1::fgkBoundary = 0.7; // Thickness of Boundary wall
80 const Float_t AliPMDv1::fgkThBase = 0.3; // Thickness of Base plate
81 const Float_t AliPMDv1::fgkThAir = 0.1; // Thickness of Air
82 const Float_t AliPMDv1::fgkThPCB = 0.16; // Thickness of PCB
83 const Float_t AliPMDv1::fgkThLead = 1.5; // Thickness of Pb
84 const Float_t AliPMDv1::fgkThSteel = 0.5; // Thickness of Steel
85 const Float_t AliPMDv1::fgkGap = 0.025; // Air Gap
86 const Float_t AliPMDv1::fgkZdist = 361.5; // z-position of the detector
87 const Float_t AliPMDv1::fgkSqroot3 = 1.7320508;// Square Root of 3
88 const Float_t AliPMDv1::fgkSqroot3by2 = 0.8660254;// Square Root of 3 by 2
92 //_____________________________________________________________________________
96 // Default constructor
101 //_____________________________________________________________________________
102 AliPMDv1::AliPMDv1(const char *name, const char *title)
106 // Standard constructor
111 //_____________________________________________________________________________
112 void AliPMDv1::CreateGeometry()
114 // Create geometry for Photon Multiplicity Detector
121 //_____________________________________________________________________________
122 void AliPMDv1::CreateSupermodule()
125 // Creates the geometry of the cells of PMD, places them in supermodule
126 // which is a rectangular object.
127 // Basic unit is ECAR, a hexagonal cell made of Ar+CO2, which is
128 // placed inside another hexagonal cell made of Cu (ECCU) with larger
129 // radius, compared to ECAR. The difference in radius gives the dimension
130 // of half width of each cell wall.
131 // These cells are placed in a rectangular strip which are of 2 types
133 // 2 types of unit modules are made EUM1 and EUM2 which contains these strips
135 // Each supermodule (ESMA, ESMB), made of G10 is filled with following
136 //components. They have 9 unit moudles inside them
137 // ESMA, ESMB are placed in EPMD along with EMPB (Pb converter)
138 // and EMFE (iron support)
146 // const Float_t kroot3by2 = TMath::Sqrt(3.) /2.;
147 // const Float_t kroot3 = TMath::Sqrt(3.);
149 Int_t *idtmed = fIdtmed->GetArray()-599;
151 AliMatrix(ihrotm, 90., 30., 90., 120., 0., 0.);
152 AliMatrix(irotdm, 90., 180., 90., 270., 180., 0.);
154 // gAliZdist = TMath::Abs(gAliZdist1);
156 // First create the sensitive medium of a hexagon cell (ECAR)
157 // Inner hexagon filled with gas (Ar+CO2)
159 Float_t hexd2[10] = {0.,360.,6,2,-0.25,0.,0.23,0.25,0.,0.23};
160 hexd2[4] = -fgkCellDepth/2.;
161 hexd2[7] = fgkCellDepth/2.;
162 hexd2[6] = fgkCellRadius - fgkCellWall;
163 hexd2[9] = fgkCellRadius - fgkCellWall;
165 gMC->Gsvolu("ECAR", "PGON", idtmed[604], hexd2,10);
166 gMC->Gsatt("ECAR", "SEEN", 0);
168 // Place the sensitive medium inside a hexagon copper cell (ECCU)
169 // Outer hexagon made of Copper
171 Float_t hexd1[10] = {0.,360.,6,2,-0.25,0.,0.25,0.25,0.,0.25};
172 hexd1[4] = -fgkCellDepth/2.;
173 hexd1[7] = fgkCellDepth/2.;
174 hexd1[6] = fgkCellRadius;
175 hexd1[9] = fgkCellRadius;
177 gMC->Gsvolu("ECCU", "PGON", idtmed[614], hexd1,10);
178 gMC->Gsatt("ECCU", "SEEN", 0);
180 // Place inner hex (sensitive volume) inside outer hex (copper)
182 gMC->Gsposp("ECAR", 1, "ECCU", 0., 0., 0., 0, "ONLY", hexd2, 10);
184 // Now create Rectangular TWO strips (EST1, EST2)
185 // of 1 column and 48 or 96 cells length
187 // volume for first strip EST1 made of AIR
190 dbox1[0] = fgkNcolUM1*fgkCellRadius;
191 dbox1[1] = fgkCellRadius/fgkSqroot3by2;
192 dbox1[2] = fgkCellDepth/2.;
194 gMC->Gsvolu("EST1","BOX", idtmed[698], dbox1, 3);
195 gMC->Gsatt("EST1", "SEEN", 0);
197 // volume for second strip EST2
200 dbox2[0] = fgkNcolUM2*fgkCellRadius;
204 gMC->Gsvolu("EST2","BOX", idtmed[698], dbox2, 3);
205 gMC->Gsatt("EST2", "SEEN", 0);
207 // Place hexagonal cells ECCU placed inside EST1
210 xb = -(dbox1[0]) + fgkCellRadius;
211 for (i = 1; i <= fgkNcolUM1; ++i)
214 gMC->Gsposp("ECCU", number, "EST1", xb,yb,zb, ihrotm, "ONLY", hexd1,10);
215 xb += (fgkCellRadius*2.);
217 // Place hexagonal cells ECCU placed inside EST2
220 xb = -(dbox2[0]) + fgkCellRadius;
221 for (i = 1; i <= fgkNcolUM2; ++i)
224 gMC->Gsposp("ECCU", number, "EST2", xb,yb,zb, ihrotm, "ONLY", hexd1,10);
225 xb += (fgkCellRadius*2.);
230 // 2 types of rectangular shaped unit modules EUM1 and EUM2 (defined by BOX)
235 dbox3[0] = dbox1[0]+fgkCellRadius/2.;
236 dbox3[1] = (dbox1[1]*fgkNrowUM1)-(fgkCellRadius*fgkSqroot3*(fgkNrowUM1-1)/6.);
237 dbox3[2] = fgkCellDepth/2.;
239 gMC->Gsvolu("EUM1","BOX", idtmed[698], dbox3, 3);
240 gMC->Gsatt("EUM1", "SEEN", 1);
242 // Place rectangular strips EST1 inside EUM1 unit module
244 yb = -dbox3[1]+dbox1[1];
245 for (j = 1; j <= fgkNrowUM1; ++j)
249 xb = fgkCellRadius/2.0;
253 xb = -fgkCellRadius/2.0;
256 gMC->Gsposp("EST1",number, "EUM1", xb, yb , 0. , 0, "MANY",dbox1,3);
257 yb = (-dbox3[1]+dbox1[1])+j*1.0*fgkCellRadius*fgkSqroot3;
263 dbox4[0] = dbox2[0] + fgkCellRadius/2.;
264 dbox4[1] =(dbox2[1]*fgkNrowUM2)-(fgkCellRadius*fgkSqroot3*(fgkNrowUM2-1)/6.);
267 gMC->Gsvolu("EUM2","BOX", idtmed[698], dbox4, 3);
268 gMC->Gsatt("EUM2", "SEEN", 1);
270 // Place rectangular strips EST2 inside EUM2 unit module
272 yb = -dbox4[1]+dbox2[1];
273 for (j = 1; j <= fgkNrowUM2; ++j)
277 xb = fgkCellRadius/2.0;
281 xb = -fgkCellRadius/2.0;
284 gMC->Gsposp("EST2",number, "EUM2", xb, yb , 0. , 0, "MANY",dbox2,3);
285 yb = (-dbox4[1]+dbox2[1])+j*1.0*fgkCellRadius*fgkSqroot3;
288 // 2 types of Rectangular shaped supermodules (BOX)
289 //each with 6 unit modules
291 // volume for SUPERMODULE ESMA
292 //Space added to provide a gapping for HV between UM's
295 dboxSM1[0] = 3.0*dbox3[0]+(2.0*0.025);
296 dboxSM1[1] = 2.0*dbox3[1]+0.025;
297 dboxSM1[2] = fgkCellDepth/2.;
299 gMC->Gsvolu("ESMA","BOX", idtmed[698], dboxSM1, 3);
300 gMC->Gsatt("ESMA", "SEEN", 1);
302 //Position the 6 unit modules in EMSA
303 Float_t xa1,xa2,xa3,ya1,ya2;
304 xa1 = -dboxSM1[0] + dbox3[0];
306 xa3 = dboxSM1[0] - dbox3[0];
307 ya1 = dboxSM1[1] - dbox3[1];
308 ya2 = -dboxSM1[1] + dbox3[1];
310 gMC->Gsposp("EUM1", 1, "ESMA", xa1, ya1, 0., 0, "ONLY",dbox3,3);
311 gMC->Gsposp("EUM1", 2, "ESMA", xa2, ya1, 0., 0, "ONLY",dbox3,3);
312 gMC->Gsposp("EUM1", 3, "ESMA", xa3, ya1, 0., 0, "ONLY",dbox3,3);
313 gMC->Gsposp("EUM1", 4, "ESMA", xa1, ya2, 0., 0, "ONLY",dbox3,3);
314 gMC->Gsposp("EUM1", 5, "ESMA", xa2, ya2, 0., 0, "ONLY",dbox3,3);
315 gMC->Gsposp("EUM1", 6, "ESMA", xa3, ya2, 0., 0, "ONLY",dbox3,3);
318 // volume for SUPERMODULE ESMB
319 //Space is added to provide a gapping for HV between UM's
321 dboxSM2[0] = 2.0*dbox4[0]+0.025;
322 dboxSM2[1] = 3.0*dbox4[1]+(2.0*0.025);
323 dboxSM2[2] = fgkCellDepth/2.;
325 gMC->Gsvolu("ESMB","BOX", idtmed[698], dboxSM2, 3);
326 gMC->Gsatt("ESMB", "SEEN", 1);
328 //Position the 6 unit modules in EMSB
329 Float_t xb1,xb2,yb1,yb2,yb3;
330 xb1 = -dboxSM2[0] +dbox4[0];
331 xb2 = dboxSM2[0]-dbox4[0];
332 yb1 = dboxSM2[1]-dbox4[1];
334 yb3 = -dboxSM2[1]+dbox4[1];
336 gMC->Gsposp("EUM2", 1, "ESMB", xb1, yb1, 0., 0, "ONLY",dbox4,3);
337 gMC->Gsposp("EUM2", 2, "ESMB", xb2, yb1, 0., 0, "ONLY",dbox4,3);
338 gMC->Gsposp("EUM2", 3, "ESMB", xb1, yb2, 0., 0, "ONLY",dbox4,3);
339 gMC->Gsposp("EUM2", 4, "ESMB", xb2, yb2, 0., 0, "ONLY",dbox4,3);
340 gMC->Gsposp("EUM2", 5, "ESMB", xb1, yb3, 0., 0, "ONLY",dbox4,3);
341 gMC->Gsposp("EUM2", 6, "ESMB", xb2, yb3, 0., 0, "ONLY",dbox4,3);
344 // Make a 3mm thick G10 Base plate for ESMA
346 dboxG1a[0] = dboxSM1[0];
347 dboxG1a[1] = dboxSM1[1];
348 dboxG1a[2] = fgkThBase/2.;
350 gMC->Gsvolu("EBPA","BOX", idtmed[607], dboxG1a, 3);
351 gMC->Gsatt("EBPA", "SEEN", 1);
353 // Make a 1.6mm thick G10 PCB for ESMA
355 dboxG2a[0] = dboxSM1[0];
356 dboxG2a[1] = dboxSM1[1];
357 dboxG2a[2] = fgkThPCB/2.;
359 gMC->Gsvolu("EPCA","BOX", idtmed[607], dboxG2a, 3);
360 gMC->Gsatt("EPCA", "SEEN", 1);
363 // Make a Full module EFPA of AIR to place EBPA,
364 // 1mm AIR, EPCA, ESMA,EPCA for PMD
367 dboxAlla[0] = dboxSM1[0];
368 dboxAlla[1] = dboxSM1[1];
369 dboxAlla[2] = (fgkThBase+fgkThAir+fgkThPCB+dboxSM1[2]+fgkThPCB)/2.;
371 gMC->Gsvolu("EFPA","BOX", idtmed[698], dboxAlla, 3);
372 gMC->Gsatt("EFPA", "SEEN", 1);
375 // Make a Full module EFCA of AIR to place EBPA,
376 // 1mm AIR, EPCA, ESMA,EPC for CPV
377 Float_t dboxAlla2[3];
378 dboxAlla2[0] = dboxSM1[0];
379 dboxAlla2[1] = dboxSM1[1];
380 dboxAlla2[2] = (fgkThBase+fgkThAir+fgkThPCB+dboxSM1[2]+fgkThPCB)/2.;
382 gMC->Gsvolu("EFCA","BOX", idtmed[698], dboxAlla2, 3);
383 gMC->Gsatt("EFCA", "SEEN", 1);
385 // Now place everything in EFPA for PMD
387 Float_t zbpa,zpcba1,zpcba2,zsma;
388 zpcba1 = - dboxAlla[2]+fgkThPCB/2.0;
389 gMC->Gsposp("EPCA", 1, "EFPA", 0., 0., zpcba1, 0, "ONLY",dboxG2a,3);
390 zsma = zpcba1+dboxSM1[2];
391 gMC->Gsposp("ESMA", 1, "EFPA", 0., 0., zsma, 0, "ONLY",dboxSM1,3);
392 zpcba2 = zsma+fgkThPCB/2.0;
393 gMC->Gsposp("EPCA", 2, "EFPA", 0., 0., zpcba2, 0, "ONLY",dboxG2a,3);
394 zbpa = zpcba2+fgkThAir+fgkThBase/2.0;
395 gMC->Gsposp("EBPA", 1, "EFPA", 0., 0., zbpa, 0, "ONLY",dboxG1a,3);
397 // Now place everything in EFCA for CPV
399 Float_t zbpa2,zpcba12,zpcba22,zsma2;
400 zbpa2 = - dboxAlla2[2]+fgkThBase/2.0;
401 gMC->Gsposp("EBPA", 1, "EFCA", 0., 0., zbpa2, 0, "ONLY",dboxG1a,3);
402 zpcba12 = zbpa2+fgkThAir+fgkThPCB/2.0;
403 gMC->Gsposp("EPCA", 1, "EFCA", 0., 0., zpcba12, 0, "ONLY",dboxG2a,3);
404 zsma2 = zpcba12+dboxSM1[2];
405 gMC->Gsposp("ESMA", 1, "EFCA", 0., 0., zsma2, 0, "ONLY",dboxSM1,3);
406 zpcba22 = zsma2+fgkThPCB/2.0;
407 gMC->Gsposp("EPCA", 2, "EFCA", 0., 0., zpcba22, 0, "ONLY",dboxG2a,3);
411 // Make a 3mm thick G10 Base plate for ESMB
413 dboxG1b[0] = dboxSM2[0];
414 dboxG1b[1] = dboxSM2[1];
415 dboxG1b[2] = fgkThBase/2.;
417 gMC->Gsvolu("EBPB","BOX", idtmed[607], dboxG1b, 3);
418 gMC->Gsatt("EBPB", "SEEN", 1);
420 // Make a 1.6mm thick G10 PCB for ESMB
422 dboxG2b[0] = dboxSM2[0];
423 dboxG2b[1] = dboxSM2[1];
424 dboxG2b[2] = fgkThPCB/2.;
426 gMC->Gsvolu("EPCB","BOX", idtmed[607], dboxG2b, 3);
427 gMC->Gsatt("EPCB", "SEEN", 1);
430 // Make a Full module EFPB of AIR to place EBPB,
431 //1mm AIR, EPCB, ESMB,EPCB for PMD
433 dboxAllb[0] = dboxSM2[0];
434 dboxAllb[1] = dboxSM2[1];
435 dboxAllb[2] = (fgkThBase+fgkThAir+fgkThPCB+dboxSM2[2]+fgkThPCB)/2.;
437 gMC->Gsvolu("EFPB","BOX", idtmed[698], dboxAllb, 3);
438 gMC->Gsatt("EFPB", "SEEN", 1);
440 // Make a Full module EFCB of AIR to place EBPB,
441 //1mm AIR, EPCB, ESMB,EPCB for CPV
442 Float_t dboxAllb2[3];
443 dboxAllb2[0] = dboxSM2[0];
444 dboxAllb2[1] = dboxSM2[1];
445 dboxAllb2[2] = (fgkThBase+fgkThAir+fgkThPCB+dboxSM2[2]+fgkThPCB)/2.;
447 gMC->Gsvolu("EFCB","BOX", idtmed[698], dboxAllb2, 3);
448 gMC->Gsatt("EFCB", "SEEN", 1);
451 // Now place everything in EFPB for PMD
453 Float_t zbpb,zpcbb1,zpcbb2,zsmb;
454 zpcbb1 = - dboxAllb[2]+fgkThPCB/2.0;
455 gMC->Gsposp("EPCB", 1, "EFPB", 0., 0., zpcbb1, 0, "ONLY",dboxG2b,3);
456 zsmb = zpcbb1+dboxSM2[2];
457 gMC->Gsposp("ESMB", 1, "EFPB", 0., 0., zsmb, 0, "ONLY",dboxSM2,3);
458 zpcbb2 = zsmb+fgkThPCB/2.0;
459 gMC->Gsposp("EPCB", 2, "EFPB", 0., 0., zpcbb2, 0, "ONLY",dboxG2b,3);
460 zbpb = zpcbb2+fgkThAir+fgkThBase/2.0;
461 gMC->Gsposp("EBPB", 1, "EFPB", 0., 0., zbpb, 0, "ONLY",dboxG1b,3);
464 // Now place everything in EFCB for CPV
466 Float_t zbpb2,zpcbb12,zpcbb22,zsmb2;
467 zbpb2 = - dboxAllb2[2]+fgkThBase/2.0;
468 gMC->Gsposp("EBPB", 1, "EFCB", 0., 0., zbpb2, 0, "ONLY",dboxG1b,3);
469 zpcbb12 = zbpb2+0.1+fgkThPCB/2.0;
470 gMC->Gsposp("EPCB", 1, "EFCB", 0., 0., zpcbb12, 0, "ONLY",dboxG2b,3);
471 zsmb2 = zpcbb12+dboxSM2[2];
472 gMC->Gsposp("ESMB", 1, "EFCB", 0., 0., zsmb2, 0, "ONLY",dboxSM2,3);
473 zpcbb22 = zsmb2+fgkThPCB/2.0;
474 gMC->Gsposp("EPCB", 2, "EFCB", 0., 0., zpcbb22, 0, "ONLY",dboxG2b,3);
477 // Master MODULE EMPA of aluminum for PMD
478 fDboxmm1[0] = dboxSM1[0]+fgkBoundary;
479 fDboxmm1[1] = dboxSM1[1]+fgkBoundary;
480 fDboxmm1[2] = dboxAlla[2];
482 gMC->Gsvolu("EMPA","BOX", idtmed[603], fDboxmm1, 3);
483 gMC->Gsatt("EMPA", "SEEN", 1);
485 // Master MODULE EMCA of aluminum for CPV
486 fDboxmm12[0] = dboxSM1[0]+fgkBoundary;
487 fDboxmm12[1] = dboxSM1[1]+fgkBoundary;
488 fDboxmm12[2] = dboxAlla[2];
490 gMC->Gsvolu("EMCA","BOX", idtmed[603], fDboxmm12, 3);
491 gMC->Gsatt("EMCA", "SEEN", 1);
494 //Position EFMA inside EMMA for PMD and CPV
495 gMC->Gsposp("EFPA", 1, "EMPA", 0., 0., 0., 0, "ONLY",dboxAlla,3);
496 gMC->Gsposp("EFCA", 1, "EMCA", 0., 0., 0., 0, "ONLY",dboxAlla2,3);
499 // Master MODULE EMPB of aluminum for PMD
500 fDboxmm2[0] = dboxSM2[0]+fgkBoundary;
501 fDboxmm2[1] = dboxSM2[1]+fgkBoundary;
502 fDboxmm2[2] = dboxAllb[2];
504 gMC->Gsvolu("EMPB","BOX", idtmed[603], fDboxmm2, 3);
505 gMC->Gsatt("EMPB", "SEEN", 1);
507 // Master MODULE EMCB of aluminum for CPV
508 fDboxmm22[0] = dboxSM2[0]+fgkBoundary;
509 fDboxmm22[1] = dboxSM2[1]+fgkBoundary;
510 fDboxmm22[2] = dboxAllb[2];
512 gMC->Gsvolu("EMCB","BOX", idtmed[603], fDboxmm22, 3);
513 gMC->Gsatt("EMCB", "SEEN", 1);
516 //Position EFMB inside EMMB
517 gMC->Gsposp("EFPB", 1, "EMPB", 0., 0., 0., 0, "ONLY",dboxAllb,3);
518 gMC->Gsposp("EFCB", 1, "EMCB", 0., 0., 0., 0, "ONLY",dboxAllb2,3);
523 //_____________________________________________________________________________
525 void AliPMDv1::CreatePMD()
528 // Create final detector from supermodules
529 // -- Author : Bedanga and Viyogi June 2003
532 Int_t jhrot12,jhrot13, irotdm;
533 Int_t *idtmed = fIdtmed->GetArray()-599;
535 //VOLUMES Names : begining with "E" for all PMD volumes,
537 // --- DEFINE Iron, and lead volumes for SM A
540 dboxPba[0] = fSMLengthax;
541 dboxPba[1] = fSMLengthay;
542 dboxPba[2] = fgkThLead/2.;
544 gMC->Gsvolu("EPBA","BOX", idtmed[600], dboxPba, 3);
545 gMC->Gsatt ("EPBA", "SEEN", 0);
549 dboxFea[0] = fSMLengthax;
550 dboxFea[1] = fSMLengthay;
551 dboxFea[2] = fgkThSteel/2.;
553 gMC->Gsvolu("EFEA","BOX", idtmed[618], dboxFea, 3);
554 gMC->Gsatt ("EFEA", "SEEN", 0);
556 // --- DEFINE Iron, and lead volumes for SM B
559 dboxPbb[0] = fSMLengthbx;
560 dboxPbb[1] = fSMLengthby;
561 dboxPbb[2] = fgkThLead/2.;
563 gMC->Gsvolu("EPBB","BOX", idtmed[600], dboxPbb, 3);
564 gMC->Gsatt ("EPBB", "SEEN", 0);
568 dboxFeb[0] = fSMLengthbx;
569 dboxFeb[1] = fSMLengthby;
570 dboxFeb[2] = fgkThSteel/2.;
572 gMC->Gsvolu("EFEB","BOX", idtmed[618], dboxFeb, 3);
573 gMC->Gsatt ("EFEB", "SEEN", 0);
576 // Gaspmd, the dimension of RECTANGULAR mother volume of PMD,
578 Float_t gaspmd[3] = {81.5,94.5,7.};
579 gaspmd[0] = fSMLengthax + fSMLengthbx;
580 gaspmd[1] = fSMLengthay + fSMLengthby;
582 gMC->Gsvolu("EPMD", "BOX", idtmed[698], gaspmd, 3);
583 gMC->Gsatt("EPMD", "SEEN", 1);
585 AliMatrix(irotdm, 90., 0., 90., 90., 180., 0.);
587 AliMatrix(jhrot12, 90., 180., 90., 270., 0., 0.);
588 AliMatrix(jhrot13, 90., 240., 90., 330., 0., 0.);
597 //Complete detector for Type A
598 //Position Super modules type A for both CPV and PMD in EPMD
599 Float_t zpsa,zpba,zfea,zcva;
601 zpsa = - gaspmd[2] + fSMthick/2.;
603 gMC->Gsposp("EMPA", 1, "EPMD", xsma, ysma, zpsa, 0, "ONLY",fDboxmm1,3);
604 gMC->Gsposp("EMPA", 2, "EPMD", -xsma, -ysma, zpsa, jhrot12, "ONLY",fDboxmm1,3);
605 zpba=zpsa+fSMthick/2.+dboxPba[2];
606 gMC->Gsposp("EPBA", 1, "EPMD", xsma, ysma, zpba, 0, "ONLY",dboxPba,3);
607 gMC->Gsposp("EPBA", 2, "EPMD", -xsma, -ysma, zpba, 0, "ONLY",dboxPba,3);
608 zfea=zpba+dboxPba[2]+dboxFea[2];
609 gMC->Gsposp("EFEA", 1, "EPMD", xsma, ysma, zfea, 0, "ONLY",dboxFea,3);
610 gMC->Gsposp("EFEA", 2, "EPMD", -xsma, -ysma, zfea, 0, "ONLY",dboxFea,3);
611 zcva=zfea+dboxFea[2]+fSMthick/2.;
612 gMC->Gsposp("EMCA", 1, "EPMD", xsma, ysma, zcva, 0, "ONLY",fDboxmm12,3);
613 gMC->Gsposp("EMCA", 2, "EPMD", -xsma,-ysma, zcva, jhrot12, "ONLY",fDboxmm12,3);
615 //Complete detector for Type B
616 //Position Super modules type B for both CPV and PMD in EPMD
617 Float_t zpsb,zpbb,zfeb,zcvb;
618 zpsb = - gaspmd[2] + fSMthick/2.;
620 gMC->Gsposp("EMPB", 3, "EPMD", xsmb, ysmb, zpsb, 0, "ONLY",fDboxmm2,3);
621 gMC->Gsposp("EMPB", 4, "EPMD", -xsmb, -ysmb, zpsb, jhrot12, "ONLY",fDboxmm2,3);
622 zpbb=zpsb+fSMthick/2.+dboxPbb[2];
623 gMC->Gsposp("EPBB", 3, "EPMD", xsmb, ysmb, zpbb, 0, "ONLY",dboxPbb,3);
624 gMC->Gsposp("EPBB", 4, "EPMD", -xsmb, -ysmb, zpbb, 0, "ONLY",dboxPbb,3);
625 zfeb=zpbb+dboxPbb[2]+dboxFeb[2];
626 gMC->Gsposp("EFEB", 3, "EPMD", xsmb, ysmb, zfeb, 0, "ONLY",dboxFeb,3);
627 gMC->Gsposp("EFEB", 4, "EPMD", -xsmb, -ysmb, zfeb, 0, "ONLY",dboxFeb,3);
628 zcvb=zfeb+dboxFeb[2]+fSMthick/2.;
629 gMC->Gsposp("EMCB", 3, "EPMD", xsmb, ysmb, zcvb, 0, "ONLY",fDboxmm22,3);
630 gMC->Gsposp("EMCB", 4, "EPMD", -xsmb,-ysmb, zcvb, jhrot12, "ONLY",fDboxmm22,3);
632 // --- Place the EPMD in ALICE
637 //Position Full PMD in ALICE
638 gMC->Gsposp("EPMD", 1, "ALIC", xp,yp,zp, 0, "ONLY",gaspmd,3);
643 //_____________________________________________________________________________
644 void AliPMDv1::DrawModule() const
646 // Draw a shaded view of the Photon Multiplicity Detector
648 // cout << " Inside Draw Modules " << endl;
650 gMC->Gsatt("*", "seen", -1);
651 gMC->Gsatt("alic", "seen", 0);
653 // Set the visibility of the components
655 gMC->Gsatt("ECAR","seen",0);
656 gMC->Gsatt("ECCU","seen",1);
657 gMC->Gsatt("EST1","seen",1);
658 gMC->Gsatt("EST2","seen",1);
659 gMC->Gsatt("EUM1","seen",1);
660 gMC->Gsatt("EUM2","seen",1);
661 gMC->Gsatt("ESMA","seen",1);
662 gMC->Gsatt("EPMD","seen",1);
664 gMC->Gdopt("hide", "on");
665 gMC->Gdopt("shad", "on");
666 gMC->Gsatt("*", "fill", 7);
667 gMC->SetClipBox(".");
668 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
670 gMC->Gdraw("alic", 40, 30, 0, 22, 20.5, .02, .02);
671 gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1");
673 //gMC->Gdman(17, 5, "MAN");
674 gMC->Gdopt("hide", "off");
676 cout << " Outside Draw Modules " << endl;
679 //_____________________________________________________________________________
680 void AliPMDv1::CreateMaterials()
682 // Create materials for the PMD
684 // ORIGIN : Y. P. VIYOGI
686 // cout << " Inside create materials " << endl;
687 // --- The Argon- CO2 mixture ---
688 Float_t ag[2] = { 39.95 };
689 Float_t zg[2] = { 18. };
690 Float_t wg[2] = { 0.7,0.3 };
691 Float_t dar = 0.001782; // --- Ar density in g/cm3 ---
693 Float_t ac[2] = { 12.,16. };
694 Float_t zc[2] = { 6.,8. };
695 Float_t wc[2] = { 1.,2. };
696 Float_t dc = 0.001977;
697 Float_t dco = 0.002; // --- CO2 density in g/cm3 ---
699 Float_t absl, radl, a, d, z;
704 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
705 Float_t zsteel[4] = { 26.,24.,28.,14. };
706 Float_t wsteel[4] = { .715,.18,.1,.005 };
708 Int_t *idtmed = fIdtmed->GetArray()-599;
709 Int_t isxfld = gAlice->Field()->Integ();
710 Float_t sxmgmx = gAlice->Field()->Max();
712 // --- Define the various materials for GEANT ---
713 AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5);
715 AliMaterial(2, "Argon$", 39.95, 18., dar, x0ar, 6.5e4);
716 AliMixture(3, "CO2 $", ac, zc, dc, -2, wc);
717 AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5);
718 AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5);
719 AliMaterial(7, "W $", 183.85, 74., 19.3, .35, 10.3);
720 AliMaterial(8, "G10 $", 20., 10., 1.7, 19.4, 999.);
721 AliMaterial(9, "SILIC$", 28.09, 14., 2.33, 9.36, 45.);
722 AliMaterial(10, "Be $", 9.01, 4., 1.848, 35.3, 36.7);
723 AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.);
724 AliMaterial(16, "C $", 12.01, 6., 2.265, 18.8, 49.9);
725 AliMaterial(17, "POLYCARBONATE $", 20., 10., 1.2, 34.6, 999.);
726 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
727 // AliMaterial(31, "Xenon$", 131.3, 54., dxe, x0xe, 6.5e4);
729 AliMaterial(96, "MYLAR$", 8.73, 4.55, 1.39, 28.7, 62.);
730 AliMaterial(97, "CONCR$", 20., 10., 2.5, 10.7, 40.);
731 AliMaterial(98, "Vacum$", 1e-9, 1e-9, 1e-9, 1e16, 1e16);
732 AliMaterial(99, "Air $", 14.61, 7.3, .0012, 30420., 67500.);
734 // define gas-mixtures
737 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
740 dg = (dar * 4 + dco) / 5;
741 AliMixture(5, "ArCO2$", ag, zg, dg, 2, wg);
743 // Define tracking media
744 AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
745 AliMedium(7, "W conv.$", 7, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
746 AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
747 AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
748 AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
749 AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
750 AliMedium(9, "SILICON $", 9, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
751 AliMedium(10, "Be $", 10, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
752 AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .1, 10);
753 AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .1, .1);
754 AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
755 AliMedium(16, "C $", 16, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
756 AliMedium(17, "PLOYCARB$", 17, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
757 AliMedium(19, " S steel$", 19, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
758 // AliMedium(31, "Xenon $", 31, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
760 // --- Generate explicitly delta rays in the iron, aluminium and lead ---
761 gMC->Gstpar(idtmed[600], "LOSS", 3.);
762 gMC->Gstpar(idtmed[600], "DRAY", 1.);
764 gMC->Gstpar(idtmed[603], "LOSS", 3.);
765 gMC->Gstpar(idtmed[603], "DRAY", 1.);
767 gMC->Gstpar(idtmed[604], "LOSS", 3.);
768 gMC->Gstpar(idtmed[604], "DRAY", 1.);
770 gMC->Gstpar(idtmed[605], "LOSS", 3.);
771 gMC->Gstpar(idtmed[605], "DRAY", 1.);
773 gMC->Gstpar(idtmed[606], "LOSS", 3.);
774 gMC->Gstpar(idtmed[606], "DRAY", 1.);
776 gMC->Gstpar(idtmed[607], "LOSS", 3.);
777 gMC->Gstpar(idtmed[607], "DRAY", 1.);
779 // --- Energy cut-offs in the Pb and Al to gain time in tracking ---
780 // --- without affecting the hit patterns ---
781 gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4);
782 gMC->Gstpar(idtmed[600], "CUTELE", 1e-4);
783 gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4);
784 gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4);
785 gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4);
786 gMC->Gstpar(idtmed[605], "CUTELE", 1e-4);
787 gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4);
788 gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4);
789 gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4);
790 gMC->Gstpar(idtmed[606], "CUTELE", 1e-4);
791 gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4);
792 gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4);
793 gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4);
794 gMC->Gstpar(idtmed[603], "CUTELE", 1e-4);
795 gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4);
796 gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4);
797 gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4);
798 gMC->Gstpar(idtmed[609], "CUTELE", 1e-4);
799 gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4);
800 gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4);
802 // --- Prevent particles stopping in the gas due to energy cut-off ---
803 gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5);
804 gMC->Gstpar(idtmed[604], "CUTELE", 1e-5);
805 gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5);
806 gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5);
807 gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5);
809 cout << " Outside create materials " << endl;
813 //_____________________________________________________________________________
814 void AliPMDv1::Init()
817 // Initialises PMD detector after it has been built
823 cout << " Inside Init " << endl;
825 printf("\n%s: ",ClassName());
826 for(i=0;i<35;i++) printf("*");
827 printf(" PMD_INIT ");
828 for(i=0;i<35;i++) printf("*");
829 printf("\n%s: ",ClassName());
830 printf(" PMD simulation package (v1) initialised\n");
831 printf("%s: parameters of pmd\n",ClassName());
832 printf("%s: %10.2f %10.2f %10.2f \
833 %10.2f\n",ClassName(),fgkCellRadius,fgkCellWall,fgkCellDepth,fgkZdist );
834 printf("%s: ",ClassName());
835 for(i=0;i<80;i++) printf("*");
839 Int_t *idtmed = fIdtmed->GetArray()-599;
840 fMedSens=idtmed[605-1];
844 //_____________________________________________________________________________
845 void AliPMDv1::StepManager()
848 // Called at each step in the PMD
852 Float_t hits[4], destep;
853 Float_t center[3] = {0,0,0};
857 if(gMC->GetMedium() == fMedSens && (destep = gMC->Edep())) {
859 gMC->CurrentVolID(copy);
860 //namep=gMC->CurrentVolName();
861 //printf("Current vol is %s \n",namep);
864 gMC->CurrentVolOffID(1,copy);
865 //namep=gMC->CurrentVolOffName(1);
866 //printf("Current vol 11 is %s \n",namep);
869 gMC->CurrentVolOffID(2,copy);
870 //namep=gMC->CurrentVolOffName(2);
871 //printf("Current vol 22 is %s \n",namep);
874 // if(strncmp(namep,"EHC1",4))vol[2]=1;
876 gMC->CurrentVolOffID(3,copy);
877 //namep=gMC->CurrentVolOffName(3);
878 //printf("Current vol 33 is %s \n",namep);
881 gMC->CurrentVolOffID(4,copy);
882 //namep=gMC->CurrentVolOffName(4);
883 //printf("Current vol 44 is %s \n",namep);
886 gMC->CurrentVolOffID(5,copy);
887 //namep=gMC->CurrentVolOffName(5);
888 //printf("Current vol 55 is %s \n",namep);
891 gMC->CurrentVolOffID(6,copy);
892 //namep=gMC->CurrentVolOffName(6);
893 //printf("Current vol 66 is %s \n",namep);
896 gMC->CurrentVolOffID(7,copy);
897 //namep=gMC->CurrentVolOffName(7);
898 //printf("Current vol 77 is %s \n",namep);
902 //printf("volume number %4d %4d %4d %4d %4d %4d %4d %4d %10.3f \n",vol[0],vol[1],vol[2],vol[3],vol[4],vol[5],vol[6],vol[7],destep*1000000);
904 gMC->Gdtom(center,hits,1);
905 hits[3] = destep*1e9; //Number in eV
906 AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits);
912 //------------------------------------------------------------------------
915 void AliPMDv1::GetParameters()
917 // This gives all the parameters of the detector
918 // such as Length of Supermodules, type A, type B,
919 // thickness of the Supermodule
922 fSMLengthax = (3.0*(fgkNcolUM1*fgkCellRadius+fgkCellRadius/2.)
923 + (2.0*fgkGap)) + fgkBoundary;
924 fSMLengthbx = 2.0*(fgkNcolUM2*fgkCellRadius+fgkCellRadius/2.)
925 + fgkGap + fgkBoundary;
927 fSMLengthay = 2.0*(((fgkCellRadius/fgkSqroot3by2)*fgkNrowUM1)
928 - (fgkCellRadius*fgkSqroot3*(fgkNrowUM1-1)/6.))
929 + fgkGap + fgkBoundary;
930 fSMLengthby = 3.0*(((fgkCellRadius/fgkSqroot3by2)*fgkNrowUM2)
931 - (fgkCellRadius*fgkSqroot3*(fgkNrowUM2-1)/6.))
932 + (2.0*fgkGap) + fgkBoundary;
934 fSMthick = fgkThBase + fgkThAir + fgkThPCB
935 + fgkCellDepth + fgkThPCB + fgkThAir + fgkThPCB;