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 **************************************************************************/
18 Revision 1.7 2000/10/02 21:28:12 fca
19 Removal of useless dependecies via forward declarations
21 Revision 1.6 1999/09/29 09:24:28 fca
22 Introduction of the Copyright and cvs Log
26 ///////////////////////////////////////////////////////////////////////////////
28 // Photon Multiplicity Detector Version 1 //
32 <img src="picts/AliPMDv2Class.gif">
36 ///////////////////////////////////////////////////////////////////////////////
44 static const Double_t kPI=TMath::Pi();
46 static Float_t smod1[3], smod2[3], smod3[3], smod4[3];
47 static Int_t maxbox, kdet;
48 static Float_t thgas,thcell,thmin,thmax,zdist,zdist1,thlow,
51 static Float_t xbox[40][40], ybox[40][40];
52 static Int_t pindex[40][40];
55 //_____________________________________________________________________________
56 AliPMDv2::AliPMDv2() : AliPMD()
59 // Default constructor
64 //_____________________________________________________________________________
65 AliPMDv2::AliPMDv2(const char *name, const char *title)
69 // Standard constructor
74 //_____________________________________________________________________________
75 void AliPMDv2::Coordnew()
78 // Find coordinates for pad geometry
80 // Author Y.P. Viyogi, VECC Calcutta
83 Float_t th1, th2, dbox, dist;
84 //Float_t xoff[40][40], yoff[40][40];
87 Int_t xoff1[3], yoff1[3], l;
88 Float_t rhigh, dmax, hole;
92 th1 = thmin * kPI / 180;
93 th2 = thmax * kPI / 180;
94 /* ESTIMATES FOR OCTAGON */
95 dist = zdist * TMath::Tan(th2);
96 /* *** 04.06.97 Fixed Module size of 6 cm, 0 mm boundary. */
97 /* *** variable pad sizes of 0.3 mm, 0.5 mm, 1.0 mm and 1.2 mm */
99 maxbox = Int_t(dist / dbox + .5);
101 /* NOW GET THE HOLE SIZE ETC. */
102 hole = zdist * TMath::Tan(th1);
103 nhol = Int_t(hole / dbox + .5);
106 rlow = zdist * TMath::Tan(thlow * kPI / 180);
107 rhigh = zdist * TMath::Tan(thhigh * kPI / 180);
108 for (i = 1; i <= 40; ++i) {
109 for (j = 1; j <= 40; ++j) {
119 // NOW START PLACING THE BOXES IN VARIOUS LAYERS, START FROM THE CENTRE
122 for(i=0;i<3;i++) yoff1[i]=0;
124 // PRINT*,'MAXBOX=',MAXBOX
125 for (i = 1; i <= maxbox; ++i) {
127 for(j=0;j<3;j++) xoff1[j]=0;
128 for (j = 1; j <= maxbox; ++j) {
129 rr = sqrt(xx*xx+yy*yy);
130 if (rr >= hole && rr <= dmax) {
133 //if (rr < rlow) index[j][i] = 1;
134 //else if (rr > rhigh) index[j][i] = 3;
138 //xoff[j][i] = xoff1[index[j][i] - 1];
139 //yoff[j][i] = yoff1[index[j][i] - 1];
141 if (kdet == 1) kk = 1; else kk = 0;
142 for (l = 1; l <= 3; ++l)
143 xoff1[l - 1] += fNumPads[l + kk - 1];
147 if (kdet == 1) kk = 1; else kk=0;
149 for (l = 1; l <= 3; ++l)
150 yoff1[l - 1] += fNumPads[l + kk - 1];
155 //_____________________________________________________________________________
156 void AliPMDv2::Coordinates()
159 // SUBROUTINE TO COMPUTE THE X- AND Y- COORDINATES OF THE BOXES
160 // WHICH CAN FIT INTO THE CIRCULAR REGION BETWEEN THE GIVEN ANGLES.
161 // INPUT : ZDIST, THMIN, THMAX, PADSIZE (FOR INSIDE and OUTSIDE PMD).
162 // ALL DIMENSIONS IN CM.
163 // -- Author : Y.P. VIYOGI, 10/05/1996.
165 Float_t hole, dmax, dbox;
171 Float_t rhigh, rr, xx, yy, th1, th2;
175 // ESTIMATES FOR OCTAGON
176 dist = zdist * TMath::Tan(th2);
177 // *** 04.06.97 Fixed Module size of 24 cm, 3 mm boundary.
178 // *** variable pad sizes of 8 mm, 10 mm, 12mm and 15 mm
180 maxbox = Int_t(dist / dbox + .5);
182 // NOW GET THE HOLE SIZE ETC.
183 hole = zdist * TMath::Tan(th1);
184 nhol = Int_t(hole / dbox + .5);
187 rlow = zdist * TMath::Tan(thlow*kPI/180);
188 rhigh = zdist * TMath::Tan(thhigh*kPI/180);
189 for (i = 0; i < 40; ++i) {
190 for (j = 0; j < 40; ++j) {
197 // NOW START PLACING THE BOXES IN VARIOUS LAYERS, START FROM THE CENTRE
200 for (i = 0; i < maxbox; ++i) {
202 for (j = 0; j < maxbox; ++j) {
203 rr = TMath::Sqrt(xx*xx + yy*yy);
204 if (rr >= hole && rr <= dmax) { // BOX CAN BE FITTED
206 if (rr < rlow) pindex[j][i] = 1;
207 if (rr > rhigh) pindex[j][i] = 3;
218 //_____________________________________________________________________________
219 void AliPMDv2::CreateGeometry()
222 // Create geometry for Photon Multiplicity Detector Version 1
226 <img src="picts/AliPMDv2.gif">
231 <img src="picts/AliPMDv2Tree.gif">
238 //_____________________________________________________________________________
239 void AliPMDv2::CreateInside()
242 // Create inside of Pads
244 // -- Author : Y.P. VIYOGI, 07/05/1996.
245 // -- Modified: P.V.K.S.Baba(JU), 15-12-97.
247 Float_t sipmd[3] = { 300.,300.,5. };
251 Float_t xiqa[4], yiqa[4];
252 Int_t inum2, inum3, inum4, i, j, k;
254 Float_t zd, xd, yd, xp, yp, zp;
257 Int_t *idtmed = fIdtmed->GetArray()-599;
259 // VOLUMES Names : begining with D for all PMD volumes,
260 // The names of SIZE variables begin with S and have more meaningful
261 // characters as shown below.
263 // VOLUME SIZE MEDIUM : REMARKS
264 // ------ ----- ------ : ---------------------------
266 // DPMD SIPMD AIR : INSIDE PMD and its SIZE
270 // *** Define the DPMD Volume and fill with air ***
272 gMC->Gsvolu("DPMD", "BOX ", idtmed[698], sipmd, 3);
274 // *** Define DIQU Volume and fill with air
275 siqad[0] = sipmd[0] / 2. - 1.;
276 siqad[1] = sipmd[1] / 2. - 1.;
278 gMC->Gsvolu("DIQU","BOX ", idtmed[698], siqad, 3);
279 gMC->Gsatt("DIQU", "SEEN", 1);
282 // --- Place the modules in INSIDE PMD (DPMD)
283 // --- FIRST CALCULATE THE COORDINATES OF THE MODULES WHICH CAN BE
291 AliMatrix(idrotm[1], 90., 0., 90., 90., 0., 0.);
292 AliMatrix(idrotm[2], 90., 180., 90., 90., 0., 0.);
293 AliMatrix(idrotm[3], 90., 180., 90., 270., 0., 0.);
294 AliMatrix(idrotm[4], 90., 0., 90., 270., 0., 0.);
295 // **** Filling the DIQU Vol. (One Quadrant)
299 for (i = 0; i < maxbox; ++i) {
301 for (j = 0; j < i2; ++j) {
302 if (xbox[j][i] <= 0 && ybox[j][i] <= 0) continue;
303 xd = xbox[j][i] - siqad[0];
304 yd = ybox[j][i] - siqad[1];
305 if (pindex[j][i] == 1) {
307 gMC->Gsposp("DM11", inum2, "DIQU", xd, yd, zd, 0, "ONLY", smod2, 3);
309 if (pindex[j][i] == 2) {
311 gMC->Gsposp("DM12", inum3, "DIQU", xd, yd, zd, 0, "ONLY", smod3, 3);
313 if (pindex[j][i] == 3) {
315 gMC->Gsposp("DM13", inum4, "DIQU", xd, yd, zd, 0, "ONLY", smod4, 3);
328 for (k = 1; k <= i2; ++k) {
329 gMC->Gsposp("DIQU", k, "DPMD", xiqa[k-1], yiqa[k-1], zd, idrotm[k], "ONLY", siqad, 3);
332 // --- Place the DPMD in ALICE with front edge 6.0m from vertex ---
336 gMC->Gspos("DPMD", 1, "ALIC", xp, yp, zp, 0, "ONLY");
340 //_____________________________________________________________________________
341 void AliPMDv2::CreatePads()
344 // Create the geometry of the pads
345 // *** DEFINITION OF THE GEOMETRY OF THE PMD ***
346 // *** DIFFERENT PADS WITH SIZES 8 MM, 10 MM, 12 MM AND 15 MM SQUARE
347 // -- Author : Y.P. VIYOGI, 04/06/1997.
348 // -- Modified: P.V.K.S.Baba(JU), 13-12-97.
350 Int_t npad1, npad2, npad3, npad4;
351 Float_t spad1[3], spad2[3], spad3[3], spad4[3];
352 Float_t scpv1[3], scpv2[3], scpv3[3], scpv4[3];
354 Float_t sstr1[3], spsw1[3], sstr2[3], spsw2[3], sstr3[3], spsw3[3],
356 Float_t xa, ya, za, xb, yb, zb, xc, sw[3], yc, zc;
358 Float_t spb[3], pad1, pad2, pad3, pad4;
359 // VOLUMES Names : begining with D for all PMD volumes,
360 // DMO1 : MODULE TYPE 1 ( 8 MM PADS)
361 // DM11 : MODULE TYPE 2 (10 MM PADS)
362 // DM12 : MODULE TYPE 3 (12 MM PADS)
363 // DM13 : MODULE TYPE 4 (15 MM PADS)
365 // The names of SIZE variables begin with S and have more meaningful
366 // characters as shown below.
368 // VOLUME SIZE MEDIUM : REMARKS
369 // ------ ----- ------ : ---------------------------
371 // DPPB SPB PB : PB Converter and its SIZE
372 // DPFE SFE FE : FE Support Plate and its SIZE
374 // DP11 SPAD2 GAS : PAD TYPE 2 (10 MM)
375 // DP12 SPAD2 GAS : PAD TYPE 2 FOR CPV(10 MM)
376 // DS11 SSTR2 FE : STRIP OF IRON
377 // DW11 SPSW2 G10 : PRESHOWER
378 // DV11 SCPV2 G10 : CPV
380 // DP13 SPAD3 GAS : PAD TYPE 3 (12 MM)
381 // DP14 SPAD3 GAS : PAD TYPE 3 FOR CPV(12 MM)
382 // DS12 SSTR3 FE : STRIP OF IRON
383 // DW12 SPSW3 G10 : PRESHOWER
384 // DV12 SCPV3 G10 : CPV
386 // DP15 SPAD4 GAS : PAD TYPE 4 (15 MM)
387 // DP16 SPAD4 GAS : PAD TYPE 4 FOR CPV(15 MM)
388 // DS13 SSTR4 FE : STRIP OF IRON
389 // DW13 SPSW4 G10 : PRESHOWER
390 // DV13 SCPV4 G10 : CPV
392 // ****************** VOLUME TREE ******************
397 // -------------------------------------------------
400 // DV11( CPV) DPFE DPPB DW11(Preshower)
403 // DS12(Strip) DS11(Strip)
406 // DP12(Pads) DP11(Pads)
408 // ************************************************************
410 // --- The above gives the Volume Tree. PAD is a gas cell of size
411 // --- given by PADSIZE in the input cards. STRIP is a collection of
412 //--- PADs in a row. STRIPs are positioned in the PRESHOWER BOX. This is
413 //--- then placed in the MODULE. The PSW and the MODULE have the same size
414 // --- ; Lead converter, Iron support plate are also placed
415 // --- in the MODULE.
418 // DATA PAD1,PAD2,PAD3,PAD4/4*0.8/
419 // DATA NPAD1,NPAD2,NPAD3,NPAD4/4*30/
421 Int_t *idtmed = fIdtmed->GetArray()-599;
423 // **** PAD SIZE 8 MM
431 zdist = TMath::Abs(zdist1);
436 numqu = Int_t(fGeo[2]);
444 npad1 = Int_t(24/fPadSize[0]);
445 npad2 = Int_t(24/fPadSize[1]);
446 npad3 = Int_t(24/fPadSize[2]);
447 npad4 = Int_t(24/fPadSize[3]);
449 spad1[0] = (pad1 - thcell) / 2.;
451 spad1[2] = thgas / 2;
452 gMC->Gsvolu("DP21", "BOX ", idtmed[604], spad1, 3);
453 gMC->Gsatt("DP21", "SEEN", 1);
454 gMC->Gsvolu("DP22", "BOX ", idtmed[604], spad1, 3);
455 gMC->Gsatt("DP22", "SEEN", 1);
457 sstr1[0] = npad1*pad1/2;
460 gMC->Gsvolu("DS21", "BOX ", idtmed[605], sstr1, 3);
461 gMC->Gsatt("DS21", "SEEN", 1);
462 gMC->Gsvolu("DS22", "BOX ", idtmed[605], sstr1, 3);
463 gMC->Gsatt("DS22", "SEEN", 1);
465 spsw1[0] = sstr1[0] + edge;
467 spsw1[2] = (thgas + .4) / 2;
468 // 2 mm G10 Plate cover (NMATE = 808)
472 gMC->Gsvolu("DW21", "BOX ", idtmed[607], spsw1, 3);
473 gMC->Gsatt("DW21", "SEEN", 1);
474 gMC->Gsvolu("DV21", "BOX ", idtmed[607], spsw1, 3);
475 gMC->Gsatt("DV21", "SEEN", 1);
477 // --- place pads in a strip
478 xa = (-npad1 + 1.) * pad1 / 2.;
481 for (i = 1; i <= npad1; ++i) {
482 gMC->Gsposp("DP21", i, "DS21", xa, ya, za, 0, "ONLY", spad1, 3);
483 gMC->Gsposp("DP22", i, "DS22", xa, ya, za, 0, "ONLY", spad1, 3);
486 // --- place strips in the PRESHOWER AND CPV boxes
488 yb = (-npad1 + 1.) * pad1 / 2.;
490 for (j = 1; j <= npad1; ++j) {
491 gMC->Gsposp("DS21", j, "DW21", xb, yb, zb, 0, "ONLY", sstr1, 3);
492 gMC->Gsposp("DS22", j, "DV21", xb, yb, zb, 0, "ONLY", sstr1, 3);
496 // **** PAD SIZE 10 MM
498 spad2[0] = (pad2 - thcell) / 2.;
500 spad2[2] = thgas / 2;
501 gMC->Gsvolu("DP11", "BOX ", idtmed[604], spad2, 3);
502 gMC->Gsatt("DP11", "SEEN", 1);
503 gMC->Gsvolu("DP12", "BOX ", idtmed[604], spad2, 3);
504 gMC->Gsatt("DP12", "SEEN", 1);
506 sstr2[0] = npad2 * pad2 / 2;
508 sstr2[2] = thgas / 2;
509 gMC->Gsvolu("DS11", "BOX ", idtmed[605], sstr2, 3);
510 gMC->Gsatt("DS11", "SEEN", 1);
511 gMC->Gsvolu("DS12", "BOX ", idtmed[605], sstr2, 3);
512 gMC->Gsatt("DS12", "SEEN", 1);
514 spsw2[0] = sstr2[0] + edge;
516 spsw2[2] = (thgas + .4) / 2;
517 // 2 mm G10 Plate cover (NMATE = 808)
521 gMC->Gsvolu("DW11","BOX ", idtmed[607], spsw2, 3);
522 gMC->Gsatt("DW11", "SEEN", 1);
523 gMC->Gsvolu("DV11","BOX ", idtmed[607], spsw2, 3);
524 gMC->Gsatt("DV11", "SEEN", 1);
526 // --- place pads in a strip
527 xa = (-npad2 + 1.) * pad2 / 2.;
530 for (i = 1; i <= npad2; ++i) {
531 gMC->Gsposp("DP11", i, "DS11", xa, ya, za, 0, "ONLY", spad2, 3);
532 gMC->Gsposp("DP12", i, "DS12", xa, ya, za, 0, "ONLY", spad2, 3);
535 // --- place strips in the PRESHOWER AND CPV boxes
537 yb = (-npad2 + 1.) * pad2 / 2.;
539 for (j = 1; j <= npad2; ++j) {
540 gMC->Gsposp("DS11", j, "DW11", xb, yb, zb, 0, "ONLY", sstr2, 3);
541 gMC->Gsposp("DS12", j, "DV11", xb, yb, zb, 0, "ONLY", sstr2, 3);
545 // **** PAD SIZE 12 MM
547 spad3[0] = (pad3 - thcell) / 2.;
549 spad3[2] = thgas / 2;
550 gMC->Gsvolu("DP13", "BOX ", idtmed[604], spad3, 3);
551 gMC->Gsatt("DP13", "SEEN", 1);
552 gMC->Gsvolu("DP14", "BOX ", idtmed[604], spad3, 3);
553 gMC->Gsatt("DP14", "SEEN", 1);
555 sstr3[0] = npad3 * pad3 / 2;
557 sstr3[2] = thgas / 2;
558 gMC->Gsvolu("DS13", "BOX ", idtmed[605], sstr3, 3);
559 gMC->Gsatt("DS13", "SEEN", 1);
560 gMC->Gsvolu("DS14", "BOX ", idtmed[605], sstr3, 3);
561 gMC->Gsatt("DS14", "SEEN", 1);
563 spsw3[0] = sstr3[0] + edge;
565 spsw3[2] = (thgas + .4) / 2;
566 // 2 mm G10 Plate cover (NMATE = 808)
570 gMC->Gsvolu("DW12","BOX ", idtmed[607], spsw3, 3);
571 gMC->Gsatt("DW12", "SEEN", 1);
572 gMC->Gsvolu("DV12","BOX ", idtmed[607], spsw3, 3);
573 gMC->Gsatt("DV12", "SEEN", 1);
575 // --- place pads in a strip
576 xa = (-npad3 + 1.) * pad3 / 2.;
579 for (i = 1; i <= npad3; ++i) {
580 gMC->Gsposp("DP13", i, "DS13", xa, ya, za, 0, "ONLY", spad3, 3);
581 gMC->Gsposp("DP14", i, "DS14", xa, ya, za, 0, "ONLY", spad3, 3);
584 // --- place strips in the PRESHOWER AND CPV boxes
586 yb = (-npad3 + 1.) * pad3 / 2.;
588 for (j = 1; j <= npad3; ++j) {
589 gMC->Gsposp("DS13", j, "DW12", xb, yb, zb, 0, "ONLY", sstr3, 3);
590 gMC->Gsposp("DS14", j, "DV12", xb, yb, zb, 0, "ONLY", sstr3, 3);
594 // **** PAD SIZE 15 MM
596 spad4[0] = (pad4 - thcell) / 2.;
598 spad4[2] = thgas / 2;
599 gMC->Gsvolu("DP15","BOX ", idtmed[604], spad4, 3);
600 gMC->Gsatt("DP15", "SEEN", 1);
601 gMC->Gsvolu("DP16","BOX ", idtmed[604], spad4, 3);
602 gMC->Gsatt("DP16", "SEEN", 1);
604 sstr4[0] = npad4 * pad4 / 2;
606 sstr4[2] = thgas / 2;
607 gMC->Gsvolu("DS15","BOX ", idtmed[605], sstr4, 3);
608 gMC->Gsatt("DS15", "SEEN", 1);
609 gMC->Gsvolu("DS16","BOX ", idtmed[605], sstr4, 3);
610 gMC->Gsatt("DS16", "SEEN", 1);
612 spsw4[0] = sstr4[0] + edge;
614 spsw4[2] = (thgas + .4) / 2;
615 // 2 mm G10 Plate cover (NMATE = 808)
619 gMC->Gsvolu("DW13","BOX ", idtmed[607], spsw4, 3);
620 gMC->Gsatt("DW13", "SEEN", 1);
621 gMC->Gsvolu("DV13","BOX ", idtmed[607], spsw4, 3);
622 gMC->Gsatt("DV13", "SEEN", 1);
624 // --- place pads in a strip
625 xa = (-npad4 + 1.) * pad4 / 2.;
628 for (i = 1; i <= npad4; ++i) {
629 gMC->Gsposp("DP15", i, "DS15", xa, ya, za, 0, "ONLY", spad4, 3);
630 gMC->Gsposp("DP16", i, "DS16", xa, ya, za, 0, "ONLY", spad4, 3);
633 // --- place strips in the PRESHOWER AND CPV boxes
635 yb = (-npad4 + 1.) * pad4 / 2.;
637 for (j = 1; j <= npad4; ++j) {
638 gMC->Gsposp("DS15", j, "DW13", xb, yb, zb, 0, "ONLY", sstr4, 3);
639 gMC->Gsposp("DS16", j, "DV13", xb, yb, zb, 0, "ONLY", sstr4, 3);
644 // --- DEFINE MODULES, IRON, TUNGSTEN AND LEAD VOLUMES
650 gMC->Gsvolu("DPPB","BOX ", idtmed[600], spb, 3);
651 gMC->Gsatt("DPPB", "SEEN", 1);
656 gMC->Gsvolu("DPW ","BOX ", idtmed[600], sw, 3);
657 gMC->Gsatt("DPW ", "SEEN", 1);
662 gMC->Gsvolu("DPFE","BOX ", idtmed[605], sfe, 3);
663 gMC->Gsatt("DPFE", "SEEN", 1);
667 // SMOD1(3)=SPSW1(3)+SFE(3)+SW (3)+SCPV1(3)
668 smod1[2] = spsw1[2] + sfe[2] + spb[2] + scpv1[2];
669 gMC->Gsvolu("DM21", "BOX ", idtmed[698], smod1, 3);
673 smod2[2] = spsw2[2] + sfe[2] + spb[2] + scpv2[2];
674 gMC->Gsvolu("DM11", "BOX ", idtmed[698], smod2, 3);
678 smod3[2] = spsw3[2] + sfe[2] + spb[2] + scpv3[2];
679 gMC->Gsvolu("DM12", "BOX ", idtmed[698], smod3, 3);
683 smod4[2] = spsw4[2] + sfe[2] + spb[2] + scpv4[2];
684 gMC->Gsvolu("DM13", "BOX ", idtmed[698], smod4, 3);
686 // **** MODULE TYPE 1 : ALWAYS WITH TUNSGTEN CONVERTER
688 // *** try with PB once 8.6.97
690 // --- place gas box (as CPV), iron support, lead converter and gas box
691 // --- (preshower) in the module
694 // --- First the CPV box
695 zc = -(spsw1[2] + sfe[2] + spb[2] + spsw1[2]) + spsw1[2];
696 gMC->Gspos("DV21", 1, "DM21", xc, yc, zc, 0, "ONLY");
697 // --- Then iron support plate
698 zc = zc + sfe[2] + spsw1[2];
699 gMC->Gspos("DPFE", 1, "DM21", xc, yc, zc, 0, "ONLY");
700 // --- Then converter plate
701 zc = zc + sfe[2] + spb[2];
702 gMC->Gspos("DPPB", 1, "DM21", xc, yc, zc, 0, "ONLY");
703 // --- Lastly the preshower box
704 zc = zc + spb[2] + spsw1[2];
705 gMC->Gspos("DW21", 1, "DM21", xc, yc, zc, 0, "ONLY");
707 // **** MODULE TYPE 2
709 // --- place gas box (as CPV), iron support, lead converter and gas box
710 // --- (preshower) in the module
713 // --- First the CPV box
714 zc = -(spsw2[2] + sfe[2] + spb[2] + spsw2[2]) + spsw2[2];
715 gMC->Gspos("DV11", 1, "DM11", xc, yc, zc, 0, "ONLY");
716 // --- Then iron support plate
717 zc = zc + sfe[2] + spsw2[2];
718 gMC->Gspos("DPFE", 1, "DM11", xc, yc, zc, 0, "ONLY");
719 // --- Then lead converter plate
720 zc = zc + sfe[2] + spb[2];
721 gMC->Gspos("DPPB", 1, "DM11", xc, yc, zc, 0, "ONLY");
722 // --- Lastly the preshower box
723 zc = zc + spb[2] + spsw2[2];
724 gMC->Gspos("DW11", 1, "DM11", xc, yc, zc, 0, "ONLY");
727 // **** MODULE TYPE 3
729 // --- place gas box (as CPV), iron support, lead converter and gas box
730 // --- (preshower) in the module
733 // --- First the CPV box
734 zc = -(spsw3[2] + sfe[2] + spb[2] + spsw3[2]) + spsw3[2];
735 gMC->Gspos("DV12", 1, "DM12", xc, yc, zc, 0, "ONLY");
736 // --- Then iron support plate
737 zc = zc + sfe[2] + spsw3[2];
738 gMC->Gspos("DPFE", 1, "DM12", xc, yc, zc, 0, "ONLY");
739 // --- Then lead converter plate
740 zc = zc + sfe[2] + spb[2];
741 gMC->Gspos("DPPB", 1, "DM12", xc, yc, zc, 0, "ONLY");
742 // --- Lastly the preshower box
743 zc = zc + spb[2] + spsw3[2];
744 gMC->Gspos("DW12", 1, "DM12", xc, yc, zc, 0, "ONLY");
747 // **** MODULE TYPE 4
749 // --- place gas box (as CPV), iron support, lead converter and gas box
750 // --- (preshower) in the module
753 // --- First the CPV box
754 zc = -(spsw4[2] + sfe[2] + spb[2] + spsw4[2]) + spsw4[2];
755 gMC->Gspos("DV13", 1, "DM13", xc, yc, zc, 0, "ONLY");
756 // --- Then iron support plate
757 zc = zc + sfe[2] + spsw4[2];
758 gMC->Gspos("DPFE", 1, "DM13", xc, yc, zc, 0, "ONLY");
759 // --- Then lead converter plate
760 zc = zc + sfe[2] + spb[2];
761 gMC->Gspos("DPPB", 1, "DM13", xc, yc, zc, 0, "ONLY");
762 // --- Lastly the preshower box
763 zc = zc + spb[2] + spsw4[2];
764 gMC->Gspos("DW13", 1, "DM13", xc, yc, zc, 0, "ONLY");
768 //_____________________________________________________________________________
769 void AliPMDv2::DrawModule()
772 // Draw a shaded view of the Photon Multiplicity Detector
775 gMC->Gsatt("*", "seen", -1);
776 gMC->Gsatt("alic", "seen", 0);
778 // Set the visibility of the components
780 gMC->Gsatt("DP21","seen",0);
781 gMC->Gsatt("DP22","seen",0);
782 gMC->Gsatt("DS21","seen",1);
783 gMC->Gsatt("DS22","seen",1);
784 gMC->Gsatt("DW21","seen",0);
785 gMC->Gsatt("DV21","seen",0);
786 gMC->Gsatt("DP11","seen",0);
787 gMC->Gsatt("DP12","seen",0);
788 gMC->Gsatt("DS11","seen",1);
789 gMC->Gsatt("DS12","seen",1);
790 gMC->Gsatt("DW11","seen",0);
791 gMC->Gsatt("DV11","seen",0);
792 gMC->Gsatt("DP13","seen",0);
793 gMC->Gsatt("DP14","seen",0);
794 gMC->Gsatt("DS13","seen",1);
795 gMC->Gsatt("DS14","seen",1);
796 gMC->Gsatt("DW12","seen",0);
797 gMC->Gsatt("DV12","seen",0);
798 gMC->Gsatt("DP15","seen",0);
799 gMC->Gsatt("DP16","seen",0);
800 gMC->Gsatt("DS15","seen",1);
801 gMC->Gsatt("DS16","seen",1);
802 gMC->Gsatt("DW13","seen",0);
803 gMC->Gsatt("DV13","seen",0);
804 gMC->Gsatt("DPPB","seen",1);
805 gMC->Gsatt("DPW ","seen",1);
806 gMC->Gsatt("DPFE","seen",1);
807 gMC->Gsatt("DM21","seen",1);
808 gMC->Gsatt("DM11","seen",1);
809 gMC->Gsatt("DM12","seen",1);
810 gMC->Gsatt("DM13","seen",1);
811 gMC->Gsatt("DPMD","seen",0);
812 gMC->Gsatt("DIQU","seen",0);
814 gMC->Gdopt("hide", "on");
815 gMC->Gdopt("shad", "on");
816 gMC->Gsatt("*", "fill", 7);
817 gMC->SetClipBox(".");
818 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
820 gMC->Gdraw("alic", 40, 30, 0, 22, 15.5, .04, .04);
821 gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1");
822 gMC->Gdman(17, 5, "MAN");
823 gMC->Gdopt("hide", "off");
826 //_____________________________________________________________________________
827 void AliPMDv2::CreateMaterials()
830 // Create materials for the PMD version 1
832 // ORIGIN : Y. P. VIYOGI
835 // --- The Argon- CO2 mixture ---
836 Float_t ag[2] = { 39.95 };
837 Float_t zg[2] = { 18. };
838 Float_t wg[2] = { .8,.2 };
839 Float_t dar = .001782; // --- Ar density in g/cm3 ---
841 Float_t ac[2] = { 12.,16. };
842 Float_t zc[2] = { 6.,8. };
843 Float_t wc[2] = { 1.,2. };
844 Float_t dc = .001977;
845 Float_t dco = .002; // --- CO2 density in g/cm3 ---
847 Float_t absl, radl, a, d, z;
853 Int_t *idtmed = fIdtmed->GetArray()-599;
854 Int_t isxfld = gAlice->Field()->Integ();
855 Float_t sxmgmx = gAlice->Field()->Max();
857 // --- Define the various materials for GEANT ---
858 AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5);
860 AliMaterial(2, "Argon$", 39.95, 18., dar, x0ar, 6.5e4);
861 AliMixture(3, "CO2 $", ac, zc, dc, -2, wc);
862 AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5);
863 AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5);
864 AliMaterial(7, "W $", 183.85, 74., 19.3, .35, 10.3);
865 AliMaterial(8, "G10 $", 20., 10., 1.7, 19.4, 999);
866 AliMaterial(9, "SILIC$", 28.09, 14., 2.33, 9.36, 45.);
867 AliMaterial(10, "Be $", 9.01, 4., 1.848, 35.3, 36.7);
868 AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.);
869 AliMaterial(16, "C $", 12.01, 6., 2.265, 18.8, 49.9);
871 AliMaterial(96, "MYLAR$", 8.73, 4.55, 1.39, 28.7, 62.);
872 AliMaterial(97, "CONCR$", 20., 10., 2.5, 10.7, 40.);
873 AliMaterial(98, "Vacum$", 1e-9, 1e-9, 1e-9, 1e16, 1e16);
874 AliMaterial(99, "Air $", 14.61, 7.3, .0012, 30420., 67500.);
876 // define gas-mixtures
879 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
882 dg = (dar * 4 + dco) / 5;
883 AliMixture(5, "ArCO2$", ag, zg, dg, 2, wg);
885 // Define tracking media
886 AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
887 AliMedium(7, "W conv.$", 7, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
888 AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
889 AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
890 AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
891 AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
892 AliMedium(9, "SILICON $", 9, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
893 AliMedium(10, "Be $", 10, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
894 AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .1, 10);
895 AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .1, .1);
896 AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
897 AliMedium(16, "C $", 16, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
899 // --- Generate explicitly delta rays in the iron, aluminium and lead ---
900 gMC->Gstpar(idtmed[600], "LOSS", 3.);
901 gMC->Gstpar(idtmed[600], "DRAY", 1.);
903 gMC->Gstpar(idtmed[603], "LOSS", 3.);
904 gMC->Gstpar(idtmed[603], "DRAY", 1.);
906 gMC->Gstpar(idtmed[604], "LOSS", 3.);
907 gMC->Gstpar(idtmed[604], "DRAY", 1.);
909 gMC->Gstpar(idtmed[605], "LOSS", 3.);
910 gMC->Gstpar(idtmed[605], "DRAY", 1.);
912 gMC->Gstpar(idtmed[606], "LOSS", 3.);
913 gMC->Gstpar(idtmed[606], "DRAY", 1.);
915 gMC->Gstpar(idtmed[607], "LOSS", 3.);
916 gMC->Gstpar(idtmed[607], "DRAY", 1.);
918 // --- Energy cut-offs in the Pb and Al to gain time in tracking ---
919 // --- without affecting the hit patterns ---
920 gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4);
921 gMC->Gstpar(idtmed[600], "CUTELE", 1e-4);
922 gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4);
923 gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4);
924 gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4);
925 gMC->Gstpar(idtmed[605], "CUTELE", 1e-4);
926 gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4);
927 gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4);
928 gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4);
929 gMC->Gstpar(idtmed[606], "CUTELE", 1e-4);
930 gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4);
931 gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4);
932 gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4);
933 gMC->Gstpar(idtmed[603], "CUTELE", 1e-4);
934 gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4);
935 gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4);
936 gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4);
937 gMC->Gstpar(idtmed[609], "CUTELE", 1e-4);
938 gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4);
939 gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4);
941 // --- Prevent particles stopping in the gas due to energy cut-off ---
942 gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5);
943 gMC->Gstpar(idtmed[604], "CUTELE", 1e-5);
944 gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5);
945 gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5);
946 gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5);
949 //_____________________________________________________________________________
950 void AliPMDv2::Init()
953 // Initialises PMD detector after it has been built
959 for(i=0;i<35;i++) printf("*");
960 printf(" PMD_INIT ");
961 for(i=0;i<35;i++) printf("*");
963 printf(" PMD simulation package initialised\n");
964 printf(" parameters of pmd\n");
965 printf("%6d %10.2f %10.2f %10.2f %10.2f %10.2f\n",kdet,thmin,thmax,zdist,thlow,thhigh);
967 for(i=0;i<80;i++) printf("*");
970 Int_t *idtmed = fIdtmed->GetArray()-599;
971 fMedSens=idtmed[605-1];
974 //_____________________________________________________________________________
975 void AliPMDv2::StepManager()
978 // Called at each step in the PMD
981 Float_t hits[4], destep;
982 Float_t center[3] = {0,0,0};
986 if(gMC->GetMedium() == fMedSens && (destep = gMC->Edep())) {
988 gMC->CurrentVolID(copy);
990 gMC->CurrentVolOffID(1,copy);
992 gMC->CurrentVolOffID(2,copy);
993 namep=gMC->CurrentVolOffName(2);
995 if(strncmp(namep,"DW11",4))vol[2]=1;
996 if(strncmp(namep,"DV11",4))vol[2]=2;
997 gMC->CurrentVolOffID(3,copy);
999 gMC->CurrentVolOffID(4,copy);
1001 gMC->Gdtom(center,hits,1);
1002 hits[3] = destep*1e9; //Number in eV
1003 AddHit(gAlice->CurrentTrack(), vol, hits);