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 1.8 2000/06/09 10:31:36 hristov
19 sqrt changed to TMath::Sqrt
21 Revision 1.7 1999/11/03 18:01:40 fca
22 Remove non orthogonal unused matrix
24 Revision 1.6 1999/09/29 09:24:28 fca
25 Introduction of the Copyright and cvs Log
29 ///////////////////////////////////////////////////////////////////////////////
31 // Photon Multiplicity Detector Version 1 //
35 <img src="picts/AliPMDv1Class.gif">
39 ///////////////////////////////////////////////////////////////////////////////
47 static Int_t maxbox, kdet;
48 static Float_t thmin,thmax,zdist,zdist1,thlow,thhigh;
52 //_____________________________________________________________________________
56 // Default constructor
61 //_____________________________________________________________________________
62 AliPMDv1::AliPMDv1(const char *name, const char *title)
66 // Standard constructor
70 //_____________________________________________________________________________
71 void AliPMDv1::CreateGeometry()
74 // Create geometry for Photon Multiplicity Detector Version 1
78 <img src="picts/AliPMDv1.gif">
83 <img src="picts/AliPMDv1Tree.gif">
90 //_____________________________________________________________________________
91 void AliPMDv1::CreateInside()
94 // Create inside of Pads
96 // -- Author : Y.P. VIYOGI, 07/05/1996.
97 // -- Modified: P.V.K.S.Baba(JU), 15-12-97.
98 // Sipmd, the dimension of TUBE mother volume of PMD, other dimensions
99 // like sip01.. are to place more tubes in the volume at different eta bins.
100 Float_t sipmd[3] = { 40.,270.,15.};
101 Float_t sip01[3] = { 10.,57.89,25.};
102 Float_t sip02[3] = { 10.,64.03,25.};
103 Float_t sip03[3] = { 10.,70.80,25.};
104 Float_t sip04[3] = { 10.,78.32,25.};
105 Float_t sip05[3] = { 10.,86.68,25.};
106 Float_t sip06[3] = { 10.,95.91,25.};
107 Float_t sip07[3] = { 10.,106.14,25.};
108 Float_t sip08[3] = { 10.,117.48,25.};
109 Float_t sip09[3] = { 10.,130.18,25.};
110 Float_t sip10[3] = { 10.,144.18,25.};
111 Float_t sip11[3] = { 10.,159.87,25.};
112 Float_t sip12[3] = { 10.,177.43,25.};
113 Float_t sip13[3] = { 10.,197.11,25.};
114 Float_t sip14[3] = { 10.,219.28,25.};
115 Float_t sipmdl[5] = { 10.,310.,25.,90.,270. };
116 Float_t sipmdr[5] = { 10.,310.,25.,270.,90. };
118 const Float_t root3_4 = TMath::Sqrt(3.)/4.;
119 const Float_t root3_2 = TMath::Sqrt(3.)/2.;
120 // Float_t xiqa[4], yiqa[4];
124 // Int_t idrotm[100];
126 Int_t jhrotc,jhrotac;
127 // const Float_t delx=78.8;
128 const Float_t delx=76.75;
129 // const Float_t dely=delx*root3_2;
130 // const Float_t delz=1.6/2.;
131 AliMatrix(jhrotc, 90., 30., 90., 120., 0., 0.);
132 AliMatrix(jhrotac, 90., 330., 90., 240., 0., 0.);
133 Float_t x1= delx*root3_4;
134 Float_t x2= delx*root3_4 + delx*root3_2;
135 Float_t x3= delx*root3_4 + 2*delx*root3_2;
136 Float_t xpos[13]={-x1,-x1,-x1,-x1,-x2,-x2,-x2,-x2,-x2,-x3,-x3,-x3,-x3};
138 Float_t ypos[13]={(-70.-x4-delx),-(70.+x4),(70.+x4),(70.+x4+delx),-x4+2*delx,-x4+delx,-x4,-x4-delx,-x4-2*delx,-3*x4-delx,-x4-delx/2.,-3*x4+delx,-3*x4+2*delx};
139 // Float_t ypos[13]={(-70.-x4-delx),-(70.+x4),(70.+x4),(70.+x4+delx),(4*dely),(2*dely),0.,-(2*dely),-(4*dely),-3*x4-delx,-x4-delx/2.,-3*x4+delx,-3*x4+2*delx};
140 Int_t *idtmed = fIdtmed->GetArray()-599;
142 // VOLUMES Names : begining with D for all PMD volumes,
143 // The names of SIZE variables begin with S and have more meaningful
144 // characters as shown below.
146 // VOLUME SIZE MEDIUM : REMARKS
147 // ------ ----- ------ : ---------------------------
149 // DPMD SIPMD AIR : INSIDE PMD and its SIZE
153 // *** Define the DPMD Volume and fill with air ***
155 gMC->Gsvolu("DPMD", "TUBE", idtmed[698], sipmd, 3);
156 gMC->Gsvolu("PM01", "TUBE", idtmed[698], sip01, 3);
157 gMC->Gsvolu("PM02", "TUBE", idtmed[698], sip02, 3);
158 gMC->Gsvolu("PM03", "TUBE", idtmed[698], sip03, 3);
159 gMC->Gsvolu("PM04", "TUBE", idtmed[698], sip04, 3);
160 gMC->Gsvolu("PM05", "TUBE", idtmed[698], sip05, 3);
161 gMC->Gsvolu("PM06", "TUBE", idtmed[698], sip06, 3);
162 gMC->Gsvolu("PM07", "TUBE", idtmed[698], sip07, 3);
163 gMC->Gsvolu("PM08", "TUBE", idtmed[698], sip08, 3);
164 gMC->Gsvolu("PM09", "TUBE", idtmed[698], sip09, 3);
165 gMC->Gsvolu("PM10", "TUBE", idtmed[698], sip10, 3);
166 gMC->Gsvolu("PM11", "TUBE", idtmed[698], sip11, 3);
167 gMC->Gsvolu("PM12", "TUBE", idtmed[698], sip12, 3);
168 gMC->Gsvolu("PM13", "TUBE", idtmed[698], sip13, 3);
169 gMC->Gsvolu("PM14", "TUBE", idtmed[698], sip14, 3);
170 gMC->Gsvolu("PMDL", "TUBS", idtmed[698], sipmdl, 5);
171 gMC->Gsvolu("PMDR", "TUBS", idtmed[698], sipmdr, 5);
173 const Int_t npad2=72;
174 Float_t hexd1[10] = {0.,360.,6,2,-0.4,0.,0.53,0.4,0.,0.53};
175 Float_t dpara_sm[6] = {12.5,12.5,0.8,30.,0.,0.};
176 dpara_sm[0]=(npad2+0.25)*hexd1[6] + 1.2;
177 dpara_sm[1] = dpara_sm[0] *root3_2;
178 Float_t dpara_dm11[6] = {12.5,12.5,0.8,30.,0.,0.};
179 dpara_dm11[0]=dpara_sm[0]+.01;
180 dpara_dm11[1] = dpara_dm11[0] *root3_2;
181 dpara_dm11[2]= 6.2/2.;
183 for (i = 0; i < 2; ++i) {
185 gMC->Gsposp("DM11", num_mod, "DPMD", xpos[i],ypos[i],0., jhrotac, "ONLY", dpara_dm11, 6);
186 gMC->Gsposp("DM11", num_mod+13, "DPMD", TMath::Abs(xpos[i]),ypos[i],0., jhrotc, "ONLY", dpara_dm11, 6);
187 printf("Num_mod %d\n",num_mod);
190 for (i = 2; i < maxbox; ++i) {
192 gMC->Gsposp("DM11", num_mod, "DPMD", xpos[i],ypos[i],0., jhrotc, "ONLY", dpara_dm11, 6);
193 gMC->Gsposp("DM11", num_mod+13, "DPMD", TMath::Abs(xpos[i]),ypos[i],0., jhrotac, "ONLY", dpara_dm11, 6);
194 printf("Num_mod %d\n",num_mod);
196 // gMC->Gspos("PM01", 1, "DPMD", 0.,0.,0., 0, "ONLY");
197 // gMC->Gspos("PM02", 1, "DPMD", 0.,0.,0., 0, "ONLY");
198 // gMC->Gspos("PM03", 1, "DPMD", 0.,0.,0., 0, "ONLY");
199 // gMC->Gspos("PM04", 1, "DPMD", 0.,0.,0., 0, "ONLY");
200 // gMC->Gspos("PM05", 1, "DPMD", 0.,0.,0., 0, "ONLY");
201 // gMC->Gspos("PM06", 1, "DPMD", 0.,0.,0., 0, "ONLY");
202 // gMC->Gspos("PM07", 1, "DPMD", 0.,0.,0., 0, "ONLY");
203 // gMC->Gspos("PM08", 1, "DPMD", 0.,0.,0., 0, "ONLY");
204 // gMC->Gspos("PM09", 1, "DPMD", 0.,0.,0., 0, "ONLY");
205 // gMC->Gspos("PM10", 1, "DPMD", 0.,0.,0., 0, "ONLY");
206 // gMC->Gspos("PM11", 1, "DPMD", 0.,0.,0., 0, "ONLY");
207 // gMC->Gspos("PM12", 1, "DPMD", 0.,0.,0., 0, "ONLY");
208 // gMC->Gspos("PM13", 1, "DPMD", 0.,0.,0., 0, "ONLY");
209 // gMC->Gspos("PM14", 1, "DPMD", 0.,0.,0., 0, "ONLY");
210 // --- Place the DPMD in ALICE with front edge 5.8m from vertex ---
214 // gMC->Gspos("PMDL", 1, "DPMD", xp,yp,0., 0, "ONLY");
215 // gMC->Gspos("PMDR", 1, "DPMD", xp,yp,0., 0, "ONLY");
216 gMC->Gspos("DPMD", 1, "ALIC", xp,yp,zp, 0, "ONLY");
220 //_____________________________________________________________________________
221 void AliPMDv1::CreatePads()
224 // Create the geometry of the pads
225 // *** DEFINITION OF THE GEOMETRY OF THE PMD ***
226 // *** HEXAGONAL PADS WITH 10 MM SQUARE EQUIVALENT
227 // -- Author : S. Chattopadhyay, 02/04/1999.
229 // Basic unit is DP11, a hexagonal cell, which is placed inside another
230 // hexagonal cell (DS11) of larger radius, compared to DP11. The difference in r// adius gives the dimension of half width of each cell wall.
231 // These cells are placed as 72 x 72 array in a
232 // rhombus shaped supermodule (DW11). The rhombus shaped modules are designed
233 // to have closed packed structure.
234 // Each supermodule (SUPR), made of G10 is filled with following components
235 // SMSS --> SS backing,
236 // SMAR --> Gap between gas hexagonal cells and G10 backing.
237 // DW11 --> Ar-Co2 filled gas hexagonal cells.
239 // These supermodules are placed inside the main module (DM11), with Fe and
240 // Pb converter positioned between CPV and PMD.
242 // SUPR (rotated to place steel on the other side), this works as preshower
243 // when PMD is placed in -ve z.
244 // SUPB --> Pb converter
245 // SUFE --> Fe backing
246 // SUPR --> supermodule without rotation (this acts as CPV).
249 const Int_t npad2 = 72;
250 Float_t hexd1[10] = {0.,360.,6,2,-0.4,0.,0.53,0.4,0.,0.53};
251 //total wall thickness=0.2*2
252 Float_t hexd2[10] = {0.,360.,6,2,-0.4,0.,0.51,0.4,0.,0.51};
254 Float_t xb, yb, zb;//, sw[3];
257 const Float_t root3_cons = TMath::Sqrt(3.) /2.;
258 Int_t *idtmed = fIdtmed->GetArray()-599;
260 AliMatrix(ihrotm, 90., 30., 90., 120., 0., 0.);
261 AliMatrix(irotdm, 90., 180., 90., 270., 180., 0.);
263 zdist = TMath::Abs(zdist1);
266 Float_t dpara[6] = {12.5,12.5,0.4,30.,0.,0.};
267 dpara[0]=(npad2+0.25)*hexd1[6];
268 dpara[1] = dpara[0] *root3_cons;
270 //Subhasis, dimensional parameters of rhombus (dpara) as given to gsvolu
271 // rhombus to accomodate 72 x 72 hexagons, and with total 1.2cm extension
272 //(1mm tolerance on both side and 5mm thick G10 wall)
275 // **** PAD SIZE 10 MM SQUARE EQUIVALENT
277 // Inner hex filled with gas
278 gMC->Gsvolu("DP11", "PGON", idtmed[604], hexd2,10);
279 gMC->Gsatt("DP11", "SEEN", 1);
281 // Outer hex filled with Plastic
282 //plastic gMC->Gsvolu("DS11", "PGON", idtmed[616], hexd1,10);
284 gMC->Gsvolu("DS11", "PGON", idtmed[601], hexd1,10);
285 gMC->Gsatt("DS11", "SEEN", 1);
286 // --- place inner hex inside outer hex
287 gMC->Gsposp("DP11", 1, "DS11", 0., 0., 0., 0, "ONLY", hexd2, 10);
288 // Rhombus shaped supermodules (defined by PARA)
289 // volume for SUPERMODULE
290 Float_t dpara_sm[6] = {12.5,12.5,0.8,30.,0.,0.};
291 dpara_sm[0]=(npad2+0.25)*hexd1[6] + 1.2;
292 dpara_sm[1] = dpara_sm[0] *root3_cons;
294 gMC->Gsvolu("SUPR","PARA", idtmed[607], dpara_sm, 6);
295 gMC->Gsatt("SUPR", "SEEN", 1);
297 Float_t dpara_ss[6] = {12.5,12.5,8.,30.,0.,0.};
298 dpara_ss[0]= dpara[0];
299 dpara_ss[1]= dpara[1];
302 gMC->Gsvolu("SMSS","PARA", idtmed[601], dpara_ss, 6);
303 gMC->Gsatt("SMSS", "SEEN", 1);
305 Float_t dpara_air[6] = {12.5,12.5,8.,30.,0.,0.};
306 dpara_air[0]= dpara[0] - 0.5;
307 dpara_air[1]= dpara_air[0] * root3_cons;
308 dpara_air[2]= 0.1/2.;
309 // gMC->Gsvolu("SMAR","PARA", idtmed[604], dpara_air, 6);
310 gMC->Gsvolu("SMAR","PARA", idtmed[698], dpara_air, 6);
311 gMC->Gsatt("SMAR", "SEEN", 1);
313 // volume for gas chamber (DW11)
315 // gMC->Gsvolu("DW11","PARA", idtmed[604], dpara, 6);
316 gMC->Gsvolu("DW11","PARA", idtmed[698], dpara, 6);
317 gMC->Gsatt("DW11", "SEEN", 1);
318 // Place outer hex inside DW11
319 yb = -dpara[1] + (1./root3_cons)*hexd1[6];
321 for (j = 1; j <= npad2; ++j) {
322 xb =-(dpara[0] + dpara[1]*0.577) + 2*hexd1[6];
324 xb = xb+(xrow-1)*hexd1[6];
326 for (i = 1; i <= npad2; ++i) {
327 number = i+(j-1)*npad2;
328 gMC->Gsposp("DS11", number, "DW11", xb, yb, zb, ihrotm, "ONLY", hexd1, 10);
332 yb += (hexd1[6]*TMath::Sqrt(3.));
334 Float_t z_ss,z_air1,z_air2,z_gas;
335 // Place other components inside super module
336 z_ss=-dpara_sm[2]+dpara_ss[2];
337 gMC->Gspos("SMSS", 1, "SUPR", 0., 0., z_ss, 0, "ONLY");
338 z_air1=z_ss+dpara_ss[2] +dpara_air[2];
339 gMC->Gspos("SMAR", 1, "SUPR", 0., 0., z_air1, 0, "ONLY");
340 z_gas=z_air1+dpara_air[2]+dpara[2]+0.1;
341 gMC->Gspos("DW11", 1, "SUPR", 0., 0., z_gas, 0, "ONLY");
342 z_air2=z_gas+dpara[2]+0.1+dpara_air[2];
343 gMC->Gspos("SMAR", 2, "SUPR", 0., 0., z_air2, 0, "ONLY");
345 // --- DEFINE MODules, iron, and lead voLUMES
348 // volume for SUPERMODULE
350 Float_t dpara_pb[6] = {12.5,12.5,8.,30.,0.,0.};
351 dpara_pb[0]=dpara_sm[0];
352 dpara_pb[1]=dpara_sm[1];
353 // dpara_pb[2]=1.1/2.;
355 gMC->Gsvolu("SUPB","PARA", idtmed[600], dpara_pb, 6);
356 gMC->Gsatt("SUPB", "SEEN", 1);
358 Float_t dpara_fe[6] = {12.5,12.5,8.,30.,0.,0.};
359 dpara_fe[0]=dpara_sm[0];
360 dpara_fe[1]=dpara_sm[1];
362 gMC->Gsvolu("SUFE","PARA", idtmed[601], dpara_fe, 6);
363 gMC->Gsatt("SUFE", "SEEN", 1);
365 Float_t dpara_dm11[6] = {12.5,12.5,0.8,30.,0.,0.};
366 dpara_dm11[0]=dpara_sm[0]+.01;
367 dpara_dm11[1] = dpara_dm11[0] *root3_cons;
368 dpara_dm11[2]= 6.2/2.;
371 gMC->Gsvolu("DM11","PARA", idtmed[698], dpara_dm11, 6);
372 gMC->Gsatt("DM11", "SEEN", 1);
373 // position super module inside DM11
374 Float_t z_ps,z_pb,z_fe,z_cv;
375 z_ps=-dpara_dm11[2]+dpara_sm[2];
376 gMC->Gspos("SUPR", 1, "DM11", 0., 0., z_ps, irotdm, "ONLY");
377 z_pb=z_ps+dpara_sm[2]+dpara_pb[2];
378 gMC->Gspos("SUPB", 1, "DM11", 0., 0., z_pb, 0, "ONLY");
379 z_fe=z_pb+dpara_pb[2]+dpara_fe[2];
380 gMC->Gspos("SUFE", 1, "DM11", 0., 0., z_fe, 0, "ONLY");
381 z_cv=z_fe+dpara_fe[2]+dpara_sm[2];
382 gMC->Gspos("SUPR", 2, "DM11", 0., 0., z_cv, 0, "ONLY");
386 //_____________________________________________________________________________
387 void AliPMDv1::DrawModule()
390 // Draw a shaded view of the Photon Multiplicity Detector
393 gMC->Gsatt("*", "seen", -1);
394 gMC->Gsatt("alic", "seen", 0);
396 // Set the visibility of the components
398 gMC->Gsatt("DP11","seen",0);
399 gMC->Gsatt("DS11","seen",1);
400 gMC->Gsatt("DW11","seen",0);
401 gMC->Gsatt("DM11","seen",1);
402 gMC->Gsatt("DPMD","seen",0);
404 gMC->Gdopt("hide", "on");
405 gMC->Gdopt("shad", "on");
406 gMC->Gsatt("*", "fill", 7);
407 gMC->SetClipBox(".");
408 gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000);
410 gMC->Gdraw("alic", 40, 30, 0, 22, 20.5, .02, .02);
411 gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1");
412 //gMC->Gdman(17, 5, "MAN");
413 gMC->Gdopt("hide", "off");
416 //_____________________________________________________________________________
417 void AliPMDv1::CreateMaterials()
420 // Create materials for the PMD version 1
422 // ORIGIN : Y. P. VIYOGI
425 // --- The Argon- CO2 mixture ---
426 Float_t ag[2] = { 39.95 };
427 Float_t zg[2] = { 18. };
428 Float_t wg[2] = { .8,.2 };
429 Float_t dar = .001782; // --- Ar density in g/cm3 ---
431 Float_t ac[2] = { 12.,16. };
432 Float_t zc[2] = { 6.,8. };
433 Float_t wc[2] = { 1.,2. };
434 Float_t dc = .001977;
435 Float_t dco = .002; // --- CO2 density in g/cm3 ---
437 Float_t absl, radl, a, d, z;
442 Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
443 Float_t zsteel[4] = { 26.,24.,28.,14. };
444 Float_t wsteel[4] = { .715,.18,.1,.005 };
446 Int_t *idtmed = fIdtmed->GetArray()-599;
447 Int_t isxfld = gAlice->Field()->Integ();
448 Float_t sxmgmx = gAlice->Field()->Max();
450 // --- Define the various materials for GEANT ---
451 AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5);
453 AliMaterial(2, "Argon$", 39.95, 18., dar, x0ar, 6.5e4);
454 AliMixture(3, "CO2 $", ac, zc, dc, -2, wc);
455 AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5);
456 AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5);
457 AliMaterial(7, "W $", 183.85, 74., 19.3, .35, 10.3);
458 AliMaterial(8, "G10 $", 20., 10., 1.7, 19.4, 999.);
459 AliMaterial(9, "SILIC$", 28.09, 14., 2.33, 9.36, 45.);
460 AliMaterial(10, "Be $", 9.01, 4., 1.848, 35.3, 36.7);
461 AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.);
462 AliMaterial(16, "C $", 12.01, 6., 2.265, 18.8, 49.9);
463 AliMaterial(17, "POLYCARBONATE $", 20., 10., 1.2, 34.6, 999.);
465 AliMaterial(96, "MYLAR$", 8.73, 4.55, 1.39, 28.7, 62.);
466 AliMaterial(97, "CONCR$", 20., 10., 2.5, 10.7, 40.);
467 AliMaterial(98, "Vacum$", 1e-9, 1e-9, 1e-9, 1e16, 1e16);
468 AliMaterial(99, "Air $", 14.61, 7.3, .0012, 30420., 67500.);
469 AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
470 // define gas-mixtures
473 gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf);
476 dg = (dar * 4 + dco) / 5;
477 AliMixture(5, "ArCO2$", ag, zg, dg, 2, wg);
479 // Define tracking media
480 AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
481 AliMedium(2, " S steel$", 19, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
482 AliMedium(7, "W conv.$", 7, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
483 AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1);
484 AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
485 AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
486 AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
487 AliMedium(9, "SILICON $", 9, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1);
488 AliMedium(10, "Be $", 10, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
489 AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .1, 10);
490 AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .1, .1);
491 AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
492 AliMedium(16, "C $", 16, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
493 AliMedium(17, "PLOYCARB$", 17, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1);
495 // --- Generate explicitly delta rays in the iron, aluminium and lead ---
496 gMC->Gstpar(idtmed[600], "LOSS", 3.);
497 gMC->Gstpar(idtmed[600], "DRAY", 1.);
499 gMC->Gstpar(idtmed[603], "LOSS", 3.);
500 gMC->Gstpar(idtmed[603], "DRAY", 1.);
502 gMC->Gstpar(idtmed[604], "LOSS", 3.);
503 gMC->Gstpar(idtmed[604], "DRAY", 1.);
505 gMC->Gstpar(idtmed[605], "LOSS", 3.);
506 gMC->Gstpar(idtmed[605], "DRAY", 1.);
508 gMC->Gstpar(idtmed[606], "LOSS", 3.);
509 gMC->Gstpar(idtmed[606], "DRAY", 1.);
511 gMC->Gstpar(idtmed[607], "LOSS", 3.);
512 gMC->Gstpar(idtmed[607], "DRAY", 1.);
514 // --- Energy cut-offs in the Pb and Al to gain time in tracking ---
515 // --- without affecting the hit patterns ---
516 gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4);
517 gMC->Gstpar(idtmed[600], "CUTELE", 1e-4);
518 gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4);
519 gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4);
520 gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4);
521 gMC->Gstpar(idtmed[605], "CUTELE", 1e-4);
522 gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4);
523 gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4);
524 gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4);
525 gMC->Gstpar(idtmed[606], "CUTELE", 1e-4);
526 gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4);
527 gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4);
528 gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4);
529 gMC->Gstpar(idtmed[603], "CUTELE", 1e-4);
530 gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4);
531 gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4);
532 gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4);
533 gMC->Gstpar(idtmed[609], "CUTELE", 1e-4);
534 gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4);
535 gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4);
537 // --- Prevent particles stopping in the gas due to energy cut-off ---
538 gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5);
539 gMC->Gstpar(idtmed[604], "CUTELE", 1e-5);
540 gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5);
541 gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5);
542 gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5);
545 //_____________________________________________________________________________
546 void AliPMDv1::Init()
549 // Initialises PMD detector after it has been built
555 for(i=0;i<35;i++) printf("*");
556 printf(" PMD_INIT ");
557 for(i=0;i<35;i++) printf("*");
559 printf(" PMD simulation package (v1) initialised\n");
560 printf(" parameters of pmd\n");
561 printf("%6d %10.2f %10.2f %10.2f %10.2f %10.2f\n",kdet,thmin,thmax,zdist,thlow,thhigh);
563 for(i=0;i<80;i++) printf("*");
566 Int_t *idtmed = fIdtmed->GetArray()-599;
567 fMedSens=idtmed[605-1];
570 //_____________________________________________________________________________
571 void AliPMDv1::StepManager()
574 // Called at each step in the PMD
577 Float_t hits[4], destep;
578 Float_t center[3] = {0,0,0};
582 if(gMC->GetMedium() == fMedSens && (destep = gMC->Edep())) {
584 gMC->CurrentVolID(copy);
585 // namep=gMC->CurrentVolName();
586 // printf("Current vol is %s \n",namep);
588 gMC->CurrentVolOffID(1,copy);
589 // namep=gMC->CurrentVolOffName(1);
590 // printf("Current vol 11 is %s \n",namep);
592 gMC->CurrentVolOffID(2,copy);
593 // namep=gMC->CurrentVolOffName(2);
594 // printf("Current vol 22 is %s \n",namep);
596 // if(strncmp(namep,"DW11",4))vol[2]=1;
597 gMC->CurrentVolOffID(3,copy);
598 // namep=gMC->CurrentVolOffName(3);
599 // printf("Current vol 33 is %s \n",namep);
601 gMC->CurrentVolOffID(4,copy);
602 // namep=gMC->CurrentVolOffName(4);
603 // printf("Current vol 44 is %s \n",namep);
605 // printf("volume number %d,%d,%d,%d,%d \n",vol[0],vol[1],vol[2],vol[3],vol[4]);
606 gMC->Gdtom(center,hits,1);
607 hits[3] = destep*1e9; //Number in eV
608 AddHit(gAlice->CurrentTrack(), vol, hits);