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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 | /* $Id$ */ | |
17 | ||
18 | // | |
19 | /////////////////////////////////////////////////////////////////////////////// | |
20 | // // | |
21 | // Photon Multiplicity Detector Version 1 // | |
22 | // // | |
23 | //Begin_Html | |
24 | /* | |
25 | <img src="picts/AliPMDv0Class.gif"> | |
26 | */ | |
27 | //End_Html | |
28 | // // | |
29 | /////////////////////////////////////////////////////////////////////////////// | |
30 | //// | |
31 | ||
32 | #include "Riostream.h" | |
33 | #include <TVirtualMC.h> | |
34 | #include "AliConst.h" | |
35 | #include "AliMagF.h" | |
36 | #include "AliPMDv0.h" | |
37 | #include "AliRun.h" | |
38 | #include "AliMC.h" | |
39 | #include "AliLog.h" | |
40 | ||
41 | const Int_t AliPMDv0::fgkNcellHole = 24; // Hole dimension | |
42 | const Float_t AliPMDv0::fgkCellRadius = 0.25; // Radius of a hexagonal cell | |
43 | const Float_t AliPMDv0::fgkCellWall = 0.02; // Thickness of cell Wall | |
44 | const Float_t AliPMDv0::fgkCellDepth = 0.50; // Gas thickness | |
45 | const Float_t AliPMDv0::fgkBoundary = 0.7; // Thickness of Boundary wall | |
46 | const Float_t AliPMDv0::fgkThBase = 0.3; // Thickness of Base plate | |
47 | const Float_t AliPMDv0::fgkThAir = 0.1; // Thickness of Air | |
48 | const Float_t AliPMDv0::fgkThPCB = 0.16; // Thickness of PCB | |
49 | const Float_t AliPMDv0::fgkThLead = 1.5; // Thickness of Pb | |
50 | const Float_t AliPMDv0::fgkThSteel = 0.5; // Thickness of Steel | |
51 | const Float_t AliPMDv0::fgkZdist = 361.5; // z-position of the detector | |
52 | const Float_t AliPMDv0::fgkSqroot3 = 1.7320508;// Square Root of 3 | |
53 | const Float_t AliPMDv0::fgkSqroot3by2 = 0.8660254;// Square Root of 3 by 2 | |
54 | const Float_t AliPMDv0::fgkPi = 3.14159; // pi | |
55 | ||
56 | ClassImp(AliPMDv0) | |
57 | ||
58 | //_____________________________________________________________________________ | |
59 | AliPMDv0::AliPMDv0(): | |
60 | fSMthick(0.), | |
61 | fSMLength(0.), | |
62 | fMedSens(0), | |
63 | fNcellSM(0) | |
64 | { | |
65 | // | |
66 | // Default constructor | |
67 | // | |
68 | } | |
69 | ||
70 | //_____________________________________________________________________________ | |
71 | AliPMDv0::AliPMDv0(const char *name, const char *title): | |
72 | AliPMD(name,title), | |
73 | fSMthick(0.), | |
74 | fSMLength(0.), | |
75 | fMedSens(0), | |
76 | fNcellSM(0) | |
77 | { | |
78 | // | |
79 | // Standard constructor | |
80 | // | |
81 | } | |
82 | ||
83 | //_____________________________________________________________________________ | |
84 | void AliPMDv0::CreateGeometry() | |
85 | { | |
86 | // | |
87 | // Create geometry for Photon Multiplicity Detector Version 3 : | |
88 | // April 2, 2001 | |
89 | // | |
90 | //Begin_Html | |
91 | /* | |
92 | <img src="picts/AliPMDv0.gif"> | |
93 | */ | |
94 | //End_Html | |
95 | //Begin_Html | |
96 | /* | |
97 | <img src="picts/AliPMDv0Tree.gif"> | |
98 | */ | |
99 | //End_Html | |
100 | GetParameters(); | |
101 | CreateSupermodule(); | |
102 | CreatePMD(); | |
103 | } | |
104 | ||
105 | //_____________________________________________________________________________ | |
106 | void AliPMDv0::CreateSupermodule() | |
107 | { | |
108 | // | |
109 | // Creates the geometry of the cells, places them in supermodule which | |
110 | // is a rhombus object. | |
111 | ||
112 | // *** DEFINITION OF THE GEOMETRY OF THE PMD *** | |
113 | // *** HEXAGONAL CELLS WITH CELL RADIUS 0.25 cm (see "GetParameters") | |
114 | // -- Author : S. Chattopadhyay, 02/04/1999. | |
115 | ||
116 | // Basic unit is ECAR, a hexagonal cell made of Ar+CO2, which is placed inside another | |
117 | // hexagonal cell made of Cu (ECCU) with larger radius, compared to ECAR. The difference | |
118 | // in radius gives the dimension of half width of each cell wall. | |
119 | // These cells are placed as 72 x 72 array in a | |
120 | // rhombus shaped supermodule (EHC1). The rhombus shaped modules are designed | |
121 | // to have closed packed structure. | |
122 | // | |
123 | // Each supermodule (ESMA, ESMB), made of G10 is filled with following components | |
124 | // EAIR --> Air gap between gas hexagonal cells and G10 backing. | |
125 | // EHC1 --> Rhombus shaped parallelopiped containing the hexagonal cells | |
126 | // EAIR --> Air gap between gas hexagonal cells and G10 backing. | |
127 | // | |
128 | // ESMA, ESMB are placed in EMM1 along with EMPB (Pb converter) | |
129 | // and EMFE (iron support) | |
130 | ||
131 | // EMM1 made of | |
132 | // ESMB --> Normal supermodule, mirror image of ESMA | |
133 | // EMPB --> Pb converter | |
134 | // EMFE --> Fe backing | |
135 | // ESMA --> Normal supermodule | |
136 | // | |
137 | // ESMX, ESMY are placed in EMM2 along with EMPB (Pb converter) | |
138 | // and EMFE (iron support) | |
139 | ||
140 | // EMM2 made of | |
141 | // ESMY --> Special supermodule, mirror image of ESMX, | |
142 | // EMPB --> Pb converter | |
143 | // EMFE --> Fe backing | |
144 | // ESMX --> First of the two Special supermodules near the hole | |
145 | ||
146 | // EMM3 made of | |
147 | // ESMQ --> Special supermodule, mirror image of ESMX, | |
148 | // EMPB --> Pb converter | |
149 | // EMFE --> Fe backing | |
150 | // ESMP --> Second of the two Special supermodules near the hole | |
151 | ||
152 | // EMM2 and EMM3 are used to create the hexagonal HOLE | |
153 | ||
154 | // | |
155 | // EPMD | |
156 | // | | |
157 | // | | |
158 | // --------------------------------------------------------------------------- | |
159 | // | | | | | | |
160 | // EHOL EMM1 EMM2 EMM3 EALM | |
161 | // | | | | |
162 | // -------------------- -------------------- -------------------- | |
163 | // | | | | | | | | | | | | | |
164 | // ESMB EMPB EMFE ESMA ESMY EMPB EMFE ESMX ESMQ EMPB EMFE ESMP | |
165 | // | | | | |
166 | // ------------ ------------ ------------- | |
167 | // | | | | | | | | | | |
168 | // EAIR EHC1 EAIR EAIR EHC2 EAIR EAIR EHC3 EAIR | |
169 | // | | | | |
170 | // ECCU ECCU ECCU | |
171 | // | | | | |
172 | // ECAR ECAR ECAR | |
173 | ||
174 | ||
175 | Int_t i, j; | |
176 | Float_t xb, yb, zb; | |
177 | Int_t number; | |
178 | Int_t ihrotm,irotdm; | |
179 | Int_t *idtmed = fIdtmed->GetArray()-599; | |
180 | ||
181 | AliMatrix(ihrotm, 90., 30., 90., 120., 0., 0.); | |
182 | AliMatrix(irotdm, 90., 180., 90., 270., 180., 0.); | |
183 | ||
184 | //Subhasis, dimensional parameters of rhombus (dpara) as given to gsvolu | |
185 | // rhombus to accomodate 72 x 72 hexagons, and with total 1.2cm extension | |
186 | //(1mm tolerance on both side and 5mm thick G10 wall) | |
187 | // | |
188 | // **** CELL SIZE 20 mm^2 EQUIVALENT | |
189 | // Inner hexagon filled with gas (Ar+CO2) | |
190 | ||
191 | Float_t hexd2[10] = {0.,360.,6,2,-0.25,0.,0.23,0.25,0.,0.23}; | |
192 | ||
193 | hexd2[4]= -fgkCellDepth/2.; | |
194 | hexd2[7]= fgkCellDepth/2.; | |
195 | hexd2[6]= fgkCellRadius - fgkCellWall; | |
196 | hexd2[9]= fgkCellRadius - fgkCellWall; | |
197 | ||
198 | // Gas replaced by vacuum for v0(insensitive) version of PMD. | |
199 | ||
200 | gMC->Gsvolu("ECAR", "PGON", idtmed[697], hexd2,10); | |
201 | gMC->Gsatt("ECAR", "SEEN", 0); | |
202 | ||
203 | // Outer hexagon made of Copper | |
204 | ||
205 | Float_t hexd1[10] = {0.,360.,6,2,-0.25,0.,0.25,0.25,0.,0.25}; | |
206 | ||
207 | hexd1[4]= -fgkCellDepth/2.; | |
208 | hexd1[7]= fgkCellDepth/2.; | |
209 | hexd1[6]= fgkCellRadius; | |
210 | hexd1[9]= fgkCellRadius; | |
211 | ||
212 | gMC->Gsvolu("ECCU", "PGON", idtmed[614], hexd1,10); | |
213 | gMC->Gsatt("ECCU", "SEEN", 1); | |
214 | ||
215 | // --- place inner hex inside outer hex | |
216 | ||
217 | gMC->Gspos("ECAR", 1, "ECCU", 0., 0., 0., 0, "ONLY"); | |
218 | ||
219 | // Rhombus shaped supermodules (defined by PARA) | |
220 | ||
221 | // volume for SUPERMODULE | |
222 | ||
223 | Float_t dparasm1[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
224 | dparasm1[0] = (fNcellSM+0.25)*hexd1[6] ; | |
225 | dparasm1[1] = dparasm1[0] *fgkSqroot3by2; | |
226 | dparasm1[2] = fSMthick/2.; | |
227 | ||
228 | // | |
229 | gMC->Gsvolu("ESMA","PARA", idtmed[607], dparasm1, 6); | |
230 | gMC->Gsatt("ESMA", "SEEN", 0); | |
231 | // | |
232 | gMC->Gsvolu("ESMB","PARA", idtmed[607], dparasm1, 6); | |
233 | gMC->Gsatt("ESMB", "SEEN", 0); | |
234 | ||
235 | // Air residing between the PCB and the base | |
236 | ||
237 | Float_t dparaair[6] = {12.5,12.5,8.,30.,0.,0.}; | |
238 | dparaair[0]= dparasm1[0]; | |
239 | dparaair[1]= dparasm1[1]; | |
240 | dparaair[2]= fgkThAir/2.; | |
241 | ||
242 | gMC->Gsvolu("EAIR","PARA", idtmed[698], dparaair, 6); | |
243 | gMC->Gsatt("EAIR", "SEEN", 0); | |
244 | ||
245 | // volume for honeycomb chamber EHC1 | |
246 | ||
247 | Float_t dpara1[6] = {12.5,12.5,0.4,30.,0.,0.}; | |
248 | dpara1[0] = dparasm1[0]; | |
249 | dpara1[1] = dparasm1[1]; | |
250 | dpara1[2] = fgkCellDepth/2.; | |
251 | ||
252 | gMC->Gsvolu("EHC1","PARA", idtmed[698], dpara1, 6); | |
253 | gMC->Gsatt("EHC1", "SEEN", 1); | |
254 | ||
255 | // Place hexagonal cells ECCU cells inside EHC1 (72 X 72) | |
256 | ||
257 | Int_t xrow = 1; | |
258 | ||
259 | yb = -dpara1[1] + (1./fgkSqroot3by2)*hexd1[6]; | |
260 | zb = 0.; | |
261 | ||
262 | for (j = 1; j <= fNcellSM; ++j) { | |
263 | xb =-(dpara1[0] + dpara1[1]*0.577) + 2*hexd1[6]; //0.577=tan(30deg) | |
264 | if(xrow >= 2){ | |
265 | xb = xb+(xrow-1)*hexd1[6]; | |
266 | } | |
267 | for (i = 1; i <= fNcellSM; ++i) { | |
268 | number = i+(j-1)*fNcellSM; | |
269 | gMC->Gspos("ECCU", number, "EHC1", xb,yb,zb, ihrotm, "ONLY"); | |
270 | xb += (hexd1[6]*2.); | |
271 | } | |
272 | xrow = xrow+1; | |
273 | yb += (hexd1[6]*fgkSqroot3); | |
274 | } | |
275 | ||
276 | ||
277 | // Place EHC1 and EAIR into ESMA and ESMB | |
278 | ||
279 | Float_t zAir1,zAir2,zGas; | |
280 | ||
281 | //ESMA is normal supermodule with base at bottom, with EHC1 | |
282 | zAir1= -dparasm1[2] + fgkThBase + dparaair[2]; | |
283 | gMC->Gspos("EAIR", 1, "ESMA", 0., 0., zAir1, 0, "ONLY"); | |
284 | zGas=zAir1+dparaair[2]+ fgkThPCB + dpara1[2]; | |
285 | //Line below Commented for version 0 of PMD routine | |
286 | // gMC->Gspos("EHC1", 1, "ESMA", 0., 0., zGas, 0, "ONLY"); | |
287 | zAir2=zGas+dpara1[2]+ fgkThPCB + dparaair[2]; | |
288 | gMC->Gspos("EAIR", 2, "ESMA", 0., 0., zAir2, 0, "ONLY"); | |
289 | ||
290 | // ESMB is mirror image of ESMA, with base at top, with EHC1 | |
291 | ||
292 | zAir1= -dparasm1[2] + fgkThPCB + dparaair[2]; | |
293 | gMC->Gspos("EAIR", 3, "ESMB", 0., 0., zAir1, 0, "ONLY"); | |
294 | zGas=zAir1+dparaair[2]+ fgkThPCB + dpara1[2]; | |
295 | //Line below Commented for version 0 of PMD routine | |
296 | // gMC->Gspos("EHC1", 2, "ESMB", 0., 0., zGas, 0, "ONLY"); | |
297 | zAir2=zGas+dpara1[2]+ fgkThPCB + dparaair[2]; | |
298 | gMC->Gspos("EAIR", 4, "ESMB", 0., 0., zAir2, 0, "ONLY"); | |
299 | ||
300 | ||
301 | // special supermodule EMM2(GEANT only) containing 6 unit modules | |
302 | // volume for SUPERMODULE | |
303 | ||
304 | Float_t dparasm2[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
305 | dparasm2[0]=(fNcellSM+0.25)*hexd1[6] ; | |
306 | dparasm2[1] = (fNcellSM - fgkNcellHole + 0.25) * fgkSqroot3by2 * hexd1[6]; | |
307 | dparasm2[2] = fSMthick/2.; | |
308 | ||
309 | gMC->Gsvolu("ESMX","PARA", idtmed[607], dparasm2, 6); | |
310 | gMC->Gsatt("ESMX", "SEEN", 0); | |
311 | // | |
312 | gMC->Gsvolu("ESMY","PARA", idtmed[607], dparasm2, 6); | |
313 | gMC->Gsatt("ESMY", "SEEN", 0); | |
314 | ||
315 | Float_t dpara2[6] = {12.5,12.5,0.4,30.,0.,0.}; | |
316 | dpara2[0] = dparasm2[0]; | |
317 | dpara2[1] = dparasm2[1]; | |
318 | dpara2[2] = fgkCellDepth/2.; | |
319 | ||
320 | gMC->Gsvolu("EHC2","PARA", idtmed[698], dpara2, 6); | |
321 | gMC->Gsatt("EHC2", "SEEN", 1); | |
322 | ||
323 | ||
324 | // Air residing between the PCB and the base | |
325 | ||
326 | Float_t dpara2Air[6] = {12.5,12.5,8.,30.,0.,0.}; | |
327 | dpara2Air[0]= dparasm2[0]; | |
328 | dpara2Air[1]= dparasm2[1]; | |
329 | dpara2Air[2]= fgkThAir/2.; | |
330 | ||
331 | gMC->Gsvolu("EAIX","PARA", idtmed[698], dpara2Air, 6); | |
332 | gMC->Gsatt("EAIX", "SEEN", 0); | |
333 | ||
334 | // Place hexagonal single cells ECCU inside EHC2 | |
335 | // skip cells which go into the hole in top left corner. | |
336 | ||
337 | xrow=1; | |
338 | yb = -dpara2[1] + (1./fgkSqroot3by2)*hexd1[6]; | |
339 | zb = 0.; | |
340 | for (j = 1; j <= (fNcellSM - fgkNcellHole); ++j) { | |
341 | xb =-(dpara2[0] + dpara2[1]*0.577) + 2*hexd1[6]; | |
342 | if(xrow >= 2){ | |
343 | xb = xb+(xrow-1)*hexd1[6]; | |
344 | } | |
345 | for (i = 1; i <= fNcellSM; ++i) { | |
346 | number = i+(j-1)*fNcellSM; | |
347 | gMC->Gspos("ECCU", number, "EHC2", xb,yb,zb, ihrotm, "ONLY"); | |
348 | xb += (hexd1[6]*2.); | |
349 | } | |
350 | xrow = xrow+1; | |
351 | yb += (hexd1[6]*fgkSqroot3); | |
352 | } | |
353 | ||
354 | ||
355 | // ESMX is normal supermodule with base at bottom, with EHC2 | |
356 | ||
357 | zAir1= -dparasm2[2] + fgkThBase + dpara2Air[2]; | |
358 | gMC->Gspos("EAIX", 1, "ESMX", 0., 0., zAir1, 0, "ONLY"); | |
359 | zGas=zAir1+dpara2Air[2]+ fgkThPCB + dpara2[2]; | |
360 | //Line below Commented for version 0 of PMD routine | |
361 | // gMC->Gspos("EHC2", 1, "ESMX", 0., 0., zGas, 0, "ONLY"); | |
362 | zAir2=zGas+dpara2[2]+ fgkThPCB + dpara2Air[2]; | |
363 | gMC->Gspos("EAIX", 2, "ESMX", 0., 0., zAir2, 0, "ONLY"); | |
364 | ||
365 | // ESMY is mirror image of ESMX with base at bottom, with EHC2 | |
366 | ||
367 | zAir1= -dparasm2[2] + fgkThPCB + dpara2Air[2]; | |
368 | gMC->Gspos("EAIX", 3, "ESMY", 0., 0., zAir1, 0, "ONLY"); | |
369 | zGas=zAir1+dpara2Air[2]+ fgkThPCB + dpara2[2]; | |
370 | //Line below Commented for version 0 of PMD routine | |
371 | // gMC->Gspos("EHC2", 2, "ESMY", 0., 0., zGas, 0, "ONLY"); | |
372 | zAir2=zGas+dpara2[2]+ fgkThPCB + dpara2Air[2]; | |
373 | gMC->Gspos("EAIX", 4, "ESMY", 0., 0., zAir2, 0, "ONLY"); | |
374 | ||
375 | // | |
376 | // special supermodule EMM3 (GEANT only) containing 2 unit modules | |
377 | // volume for SUPERMODULE | |
378 | // | |
379 | Float_t dparaSM3[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
380 | dparaSM3[0]=(fNcellSM - fgkNcellHole +0.25)*hexd1[6] ; | |
381 | dparaSM3[1] = (fgkNcellHole + 0.25) * hexd1[6] * fgkSqroot3by2; | |
382 | dparaSM3[2] = fSMthick/2.; | |
383 | ||
384 | gMC->Gsvolu("ESMP","PARA", idtmed[607], dparaSM3, 6); | |
385 | gMC->Gsatt("ESMP", "SEEN", 0); | |
386 | // | |
387 | gMC->Gsvolu("ESMQ","PARA", idtmed[607], dparaSM3, 6); | |
388 | gMC->Gsatt("ESMQ", "SEEN", 0); | |
389 | ||
390 | Float_t dpara3[6] = {12.5,12.5,0.4,30.,0.,0.}; | |
391 | dpara3[0] = dparaSM3[0]; | |
392 | dpara3[1] = dparaSM3[1]; | |
393 | dpara3[2] = fgkCellDepth/2.; | |
394 | ||
395 | gMC->Gsvolu("EHC3","PARA", idtmed[698], dpara3, 6); | |
396 | gMC->Gsatt("EHC3", "SEEN", 1); | |
397 | ||
398 | // Air residing between the PCB and the base | |
399 | ||
400 | Float_t dpara3Air[6] = {12.5,12.5,8.,30.,0.,0.}; | |
401 | dpara3Air[0]= dparaSM3[0]; | |
402 | dpara3Air[1]= dparaSM3[1]; | |
403 | dpara3Air[2]= fgkThAir/2.; | |
404 | ||
405 | gMC->Gsvolu("EAIP","PARA", idtmed[698], dpara3Air, 6); | |
406 | gMC->Gsatt("EAIP", "SEEN", 0); | |
407 | ||
408 | ||
409 | // Place hexagonal single cells ECCU inside EHC3 | |
410 | // skip cells which go into the hole in top left corner. | |
411 | ||
412 | xrow=1; | |
413 | yb = -dpara3[1] + (1./fgkSqroot3by2)*hexd1[6]; | |
414 | zb = 0.; | |
415 | for (j = 1; j <= fgkNcellHole; ++j) { | |
416 | xb =-(dpara3[0] + dpara3[1]*0.577) + 2*hexd1[6]; | |
417 | if(xrow >= 2){ | |
418 | xb = xb+(xrow-1)*hexd1[6]; | |
419 | } | |
420 | for (i = 1; i <= (fNcellSM - fgkNcellHole); ++i) { | |
421 | number = i+(j-1)*(fNcellSM - fgkNcellHole); | |
422 | gMC->Gspos("ECCU", number, "EHC3", xb,yb,zb, ihrotm, "ONLY"); | |
423 | xb += (hexd1[6]*2.); | |
424 | } | |
425 | xrow = xrow+1; | |
426 | yb += (hexd1[6]*fgkSqroot3); | |
427 | } | |
428 | ||
429 | // ESMP is normal supermodule with base at bottom, with EHC3 | |
430 | ||
431 | zAir1= -dparaSM3[2] + fgkThBase + dpara3Air[2]; | |
432 | gMC->Gspos("EAIP", 1, "ESMP", 0., 0., zAir1, 0, "ONLY"); | |
433 | zGas=zAir1+dpara3Air[2]+ fgkThPCB + dpara3[2]; | |
434 | //Line below Commented for version 0 of PMD routine | |
435 | // gMC->Gspos("EHC3", 1, "ESMP", 0., 0., zGas, 0, "ONLY"); | |
436 | zAir2=zGas+dpara3[2]+ fgkThPCB + dpara3Air[2]; | |
437 | gMC->Gspos("EAIP", 2, "ESMP", 0., 0., zAir2, 0, "ONLY"); | |
438 | ||
439 | // ESMQ is mirror image of ESMP with base at bottom, with EHC3 | |
440 | ||
441 | zAir1= -dparaSM3[2] + fgkThPCB + dpara3Air[2]; | |
442 | gMC->Gspos("EAIP", 3, "ESMQ", 0., 0., zAir1, 0, "ONLY"); | |
443 | zGas=zAir1+dpara3Air[2]+ fgkThPCB + dpara3[2]; | |
444 | //Line below Commented for version 0 of PMD routine | |
445 | // gMC->Gspos("EHC3", 2, "ESMQ", 0., 0., zGas, 0, "ONLY"); | |
446 | zAir2=zGas+dpara3[2]+ fgkThPCB + dpara3Air[2]; | |
447 | gMC->Gspos("EAIP", 4, "ESMQ", 0., 0., zAir2, 0, "ONLY"); | |
448 | ||
449 | } | |
450 | ||
451 | //_____________________________________________________________________________ | |
452 | ||
453 | void AliPMDv0::CreatePMD() | |
454 | { | |
455 | // | |
456 | // Create final detector from supermodules | |
457 | // | |
458 | // -- Author : Y.P. VIYOGI, 07/05/1996. | |
459 | // -- Modified: P.V.K.S.Baba(JU), 15-12-97. | |
460 | // -- Modified: For New Geometry YPV, March 2001. | |
461 | ||
462 | Float_t xp, yp, zp; | |
463 | Int_t i,j; | |
464 | Int_t nummod; | |
465 | Int_t jhrot12,jhrot13, irotdm; | |
466 | Int_t *idtmed = fIdtmed->GetArray()-599; | |
467 | ||
468 | // VOLUMES Names : begining with "E" for all PMD volumes, | |
469 | // The names of SIZE variables begin with S and have more meaningful | |
470 | // characters as shown below. | |
471 | // VOLUME SIZE MEDIUM : REMARKS | |
472 | // ------ ----- ------ : --------------------------- | |
473 | // EPMD GASPMD AIR : INSIDE PMD and its SIZE | |
474 | // *** Define the EPMD Volume and fill with air *** | |
475 | // Gaspmd, the dimension of HEXAGONAL mother volume of PMD, | |
476 | ||
477 | ||
478 | Float_t gaspmd[10] = {0.,360.,6,2,-4.,12.,150.,4.,12.,150.}; | |
479 | ||
480 | gaspmd[5] = fgkNcellHole * fgkCellRadius * 2. * fgkSqroot3by2; | |
481 | gaspmd[8] = gaspmd[5]; | |
482 | ||
483 | gMC->Gsvolu("EPMD", "PGON", idtmed[698], gaspmd, 10); | |
484 | gMC->Gsatt("EPMD", "SEEN", 0); | |
485 | ||
486 | AliMatrix(irotdm, 90., 0., 90., 90., 180., 0.); | |
487 | ||
488 | AliMatrix(jhrot12, 90., 120., 90., 210., 0., 0.); | |
489 | AliMatrix(jhrot13, 90., 240., 90., 330., 0., 0.); | |
490 | ||
491 | ||
492 | Float_t dmthick = 2. * fSMthick + fgkThLead + fgkThSteel; | |
493 | ||
494 | // dparaemm1 array contains parameters of the imaginary volume EMM1, | |
495 | // EMM1 is a master module of type 1, which has 24 copies in the PMD. | |
496 | // EMM1 : normal volume as in old cases | |
497 | ||
498 | ||
499 | Float_t dparaemm1[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
500 | dparaemm1[0] = fSMLength/2.; | |
501 | dparaemm1[1] = dparaemm1[0] *fgkSqroot3by2; | |
502 | dparaemm1[2] = dmthick/2.; | |
503 | ||
504 | gMC->Gsvolu("EMM1","PARA", idtmed[698], dparaemm1, 6); | |
505 | gMC->Gsatt("EMM1", "SEEN", 1); | |
506 | ||
507 | // | |
508 | // --- DEFINE Modules, iron, and lead volumes | |
509 | // Pb Convertor for EMM1 | |
510 | ||
511 | Float_t dparapb1[6] = {12.5,12.5,8.,30.,0.,0.}; | |
512 | dparapb1[0] = fSMLength/2.; | |
513 | dparapb1[1] = dparapb1[0] * fgkSqroot3by2; | |
514 | dparapb1[2] = fgkThLead/2.; | |
515 | ||
516 | gMC->Gsvolu("EPB1","PARA", idtmed[600], dparapb1, 6); | |
517 | gMC->Gsatt ("EPB1", "SEEN", 0); | |
518 | ||
519 | // Fe Support for EMM1 | |
520 | Float_t dparafe1[6] = {12.5,12.5,8.,30.,0.,0.}; | |
521 | dparafe1[0] = dparapb1[0]; | |
522 | dparafe1[1] = dparapb1[1]; | |
523 | dparafe1[2] = fgkThSteel/2.; | |
524 | ||
525 | gMC->Gsvolu("EFE1","PARA", idtmed[618], dparafe1, 6); | |
526 | gMC->Gsatt ("EFE1", "SEEN", 0); | |
527 | ||
528 | // | |
529 | // position supermodule ESMA, ESMB, EPB1, EFE1 inside EMM1 | |
530 | ||
531 | Float_t zps,zpb,zfe,zcv; | |
532 | ||
533 | zps = -dparaemm1[2] + fSMthick/2.; | |
534 | gMC->Gspos("ESMB", 1, "EMM1", 0., 0., zps, 0, "ONLY"); | |
535 | zpb = zps+fSMthick/2.+dparapb1[2]; | |
536 | gMC->Gspos("EPB1", 1, "EMM1", 0., 0., zpb, 0, "ONLY"); | |
537 | zfe = zpb+dparapb1[2]+dparafe1[2]; | |
538 | gMC->Gspos("EFE1", 1, "EMM1", 0., 0., zfe, 0, "ONLY"); | |
539 | zcv = zfe+dparafe1[2]+fSMthick/2.; | |
540 | gMC->Gspos("ESMA", 1, "EMM1", 0., 0., zcv, 0, "ONLY"); | |
541 | ||
542 | // EMM2 : special master module having full row of cells but the number | |
543 | // of rows limited by hole. | |
544 | ||
545 | Float_t dparaemm2[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
546 | dparaemm2[0] = fSMLength/2.; | |
547 | dparaemm2[1] = (fNcellSM - fgkNcellHole + 0.25)*fgkCellRadius*fgkSqroot3by2; | |
548 | dparaemm2[2] = dmthick/2.; | |
549 | ||
550 | gMC->Gsvolu("EMM2","PARA", idtmed[698], dparaemm2, 6); | |
551 | gMC->Gsatt("EMM2", "SEEN", 1); | |
552 | ||
553 | // Pb Convertor for EMM2 | |
554 | Float_t dparapb2[6] = {12.5,12.5,8.,30.,0.,0.}; | |
555 | dparapb2[0] = dparaemm2[0]; | |
556 | dparapb2[1] = dparaemm2[1]; | |
557 | dparapb2[2] = fgkThLead/2.; | |
558 | ||
559 | gMC->Gsvolu("EPB2","PARA", idtmed[600], dparapb2, 6); | |
560 | gMC->Gsatt ("EPB2", "SEEN", 0); | |
561 | ||
562 | // Fe Support for EMM2 | |
563 | Float_t dparafe2[6] = {12.5,12.5,8.,30.,0.,0.}; | |
564 | dparafe2[0] = dparapb2[0]; | |
565 | dparafe2[1] = dparapb2[1]; | |
566 | dparafe2[2] = fgkThSteel/2.; | |
567 | ||
568 | gMC->Gsvolu("EFE2","PARA", idtmed[618], dparafe2, 6); | |
569 | gMC->Gsatt ("EFE2", "SEEN", 0); | |
570 | ||
571 | // position supermodule ESMX, ESMY inside EMM2 | |
572 | ||
573 | zps = -dparaemm2[2] + fSMthick/2.; | |
574 | gMC->Gspos("ESMY", 1, "EMM2", 0., 0., zps, 0, "ONLY"); | |
575 | zpb = zps + fSMthick/2.+dparapb2[2]; | |
576 | gMC->Gspos("EPB2", 1, "EMM2", 0., 0., zpb, 0, "ONLY"); | |
577 | zfe = zpb + dparapb2[2]+dparafe2[2]; | |
578 | gMC->Gspos("EFE2", 1, "EMM2", 0., 0., zfe, 0, "ONLY"); | |
579 | zcv = zfe + dparafe2[2]+fSMthick/2.; | |
580 | gMC->Gspos("ESMX", 1, "EMM2", 0., 0., zcv, 0, "ONLY"); | |
581 | // | |
582 | // EMM3 : special master module having truncated rows and columns of cells | |
583 | // limited by hole. | |
584 | ||
585 | Float_t dparaemm3[6] = {12.5,12.5,0.8,30.,0.,0.}; | |
586 | dparaemm3[0] = dparaemm2[1]/fgkSqroot3by2; | |
587 | dparaemm3[1] = (fgkNcellHole + 0.25) * fgkCellRadius *fgkSqroot3by2; | |
588 | dparaemm3[2] = dmthick/2.; | |
589 | ||
590 | gMC->Gsvolu("EMM3","PARA", idtmed[698], dparaemm3, 6); | |
591 | gMC->Gsatt("EMM3", "SEEN", 1); | |
592 | ||
593 | // Pb Convertor for EMM3 | |
594 | Float_t dparapb3[6] = {12.5,12.5,8.,30.,0.,0.}; | |
595 | dparapb3[0] = dparaemm3[0]; | |
596 | dparapb3[1] = dparaemm3[1]; | |
597 | dparapb3[2] = fgkThLead/2.; | |
598 | ||
599 | gMC->Gsvolu("EPB3","PARA", idtmed[600], dparapb3, 6); | |
600 | gMC->Gsatt ("EPB3", "SEEN", 0); | |
601 | ||
602 | // Fe Support for EMM3 | |
603 | Float_t dparafe3[6] = {12.5,12.5,8.,30.,0.,0.}; | |
604 | dparafe3[0] = dparapb3[0]; | |
605 | dparafe3[1] = dparapb3[1]; | |
606 | dparafe3[2] = fgkThSteel/2.; | |
607 | ||
608 | gMC->Gsvolu("EFE3","PARA", idtmed[618], dparafe3, 6); | |
609 | gMC->Gsatt ("EFE3", "SEEN", 0); | |
610 | ||
611 | // position supermodule ESMP, ESMQ inside EMM3 | |
612 | ||
613 | zps = -dparaemm3[2] + fSMthick/2.; | |
614 | gMC->Gspos("ESMQ", 1, "EMM3", 0., 0., zps, 0, "ONLY"); | |
615 | zpb = zps + fSMthick/2.+dparapb3[2]; | |
616 | gMC->Gspos("EPB3", 1, "EMM3", 0., 0., zpb, 0, "ONLY"); | |
617 | zfe = zpb + dparapb3[2]+dparafe3[2]; | |
618 | gMC->Gspos("EFE3", 1, "EMM3", 0., 0., zfe, 0, "ONLY"); | |
619 | zcv = zfe + dparafe3[2] + fSMthick/2.; | |
620 | gMC->Gspos("ESMP", 1, "EMM3", 0., 0., zcv, 0, "ONLY"); | |
621 | // | |
622 | ||
623 | // EHOL is a tube structure made of air | |
624 | // | |
625 | //Float_t d_hole[3]; | |
626 | //d_hole[0] = 0.; | |
627 | //d_hole[1] = fgkNcellHole * fgkCellRadius *2. * fgkSqroot3by2 + boundary; | |
628 | //d_hole[2] = dmthick/2.; | |
629 | // | |
630 | //gMC->Gsvolu("EHOL", "TUBE", idtmed[698], d_hole, 3); | |
631 | //gMC->Gsatt("EHOL", "SEEN", 1); | |
632 | ||
633 | //Al-rod as boundary of the supermodules | |
634 | ||
635 | Float_t alRod[3] ; | |
636 | alRod[0] = fSMLength * 3/2. - gaspmd[5]/2 - fgkBoundary ; | |
637 | alRod[1] = fgkBoundary; | |
638 | alRod[2] = dmthick/2.; | |
639 | ||
640 | gMC->Gsvolu("EALM","BOX ", idtmed[698], alRod, 3); | |
641 | gMC->Gsatt ("EALM", "SEEN", 1); | |
642 | Float_t xalm[3]; | |
643 | xalm[0]=alRod[0] + gaspmd[5] + 3.0*fgkBoundary; | |
644 | xalm[1]=-xalm[0]/2.; | |
645 | xalm[2]=xalm[1]; | |
646 | ||
647 | Float_t yalm[3]; | |
648 | yalm[0]=0.; | |
649 | yalm[1]=xalm[0]*fgkSqroot3by2; | |
650 | yalm[2]=-yalm[1]; | |
651 | ||
652 | // delx = full side of the supermodule | |
653 | Float_t delx=fSMLength * 3.; | |
654 | Float_t x1= delx*fgkSqroot3by2 /2.; | |
655 | Float_t x4=delx/4.; | |
656 | ||
657 | // placing master modules and Al-rod in PMD | |
658 | ||
659 | Float_t dx = fSMLength; | |
660 | Float_t dy = dx * fgkSqroot3by2; | |
661 | Float_t xsup[9] = {-dx/2., dx/2., 3.*dx/2., | |
662 | -dx, 0., dx, | |
663 | -3.*dx/2., -dx/2., dx/2.}; | |
664 | ||
665 | Float_t ysup[9] = {dy, dy, dy, | |
666 | 0., 0., 0., | |
667 | -dy, -dy, -dy}; | |
668 | ||
669 | // xpos and ypos are the x & y coordinates of the centres of EMM1 volumes | |
670 | ||
671 | Float_t xoff = fgkBoundary * TMath::Tan(fgkPi/6.); | |
672 | Float_t xmod[3]={x4 + xoff , x4 + xoff, -2.*x4-fgkBoundary/fgkSqroot3by2}; | |
673 | Float_t ymod[3] = {-x1 - fgkBoundary, x1 + fgkBoundary, 0.}; | |
674 | Float_t xpos[9], ypos[9], x2, y2, x3, y3; | |
675 | ||
676 | Float_t xemm2 = fSMLength/2. - | |
677 | (fNcellSM + fgkNcellHole + 0.25) * fgkCellRadius * 0.5 | |
678 | + xoff; | |
679 | Float_t yemm2 = -(fNcellSM + fgkNcellHole + 0.25)*fgkCellRadius*fgkSqroot3by2 | |
680 | - fgkBoundary; | |
681 | ||
682 | Float_t xemm3 = (fNcellSM + 0.5 * fgkNcellHole + 0.25) * fgkCellRadius + | |
683 | xoff; | |
684 | Float_t yemm3 = - (fgkNcellHole - 0.25) * fgkCellRadius * fgkSqroot3by2 - | |
685 | fgkBoundary; | |
686 | ||
687 | Float_t theta[3] = {0., 2.*fgkPi/3., 4.*fgkPi/3.}; | |
688 | Int_t irotate[3] = {0, jhrot12, jhrot13}; | |
689 | ||
690 | nummod=0; | |
691 | for (j=0; j<3; ++j) { | |
692 | gMC->Gspos("EALM", j+1, "EPMD", xalm[j],yalm[j], 0., irotate[j], "ONLY"); | |
693 | x2=xemm2*TMath::Cos(theta[j]) - yemm2*TMath::Sin(theta[j]); | |
694 | y2=xemm2*TMath::Sin(theta[j]) + yemm2*TMath::Cos(theta[j]); | |
695 | ||
696 | gMC->Gspos("EMM2", j+1, "EPMD", x2,y2, 0., irotate[j], "ONLY"); | |
697 | ||
698 | x3=xemm3*TMath::Cos(theta[j]) - yemm3*TMath::Sin(theta[j]); | |
699 | y3=xemm3*TMath::Sin(theta[j]) + yemm3*TMath::Cos(theta[j]); | |
700 | ||
701 | gMC->Gspos("EMM3", j+4, "EPMD", x3,y3, 0., irotate[j], "ONLY"); | |
702 | ||
703 | for (i=1; i<9; ++i) { | |
704 | xpos[i]=xmod[j] + xsup[i]*TMath::Cos(theta[j]) - | |
705 | ysup[i]*TMath::Sin(theta[j]); | |
706 | ypos[i]=ymod[j] + xsup[i]*TMath::Sin(theta[j]) + | |
707 | ysup[i]*TMath::Cos(theta[j]); | |
708 | ||
709 | AliDebugClass(1,Form("xpos: %f, ypos: %f", xpos[i], ypos[i])); | |
710 | ||
711 | nummod = nummod+1; | |
712 | ||
713 | AliDebugClass(1,Form("nummod %d",nummod)); | |
714 | ||
715 | gMC->Gspos("EMM1", nummod + 6, "EPMD", xpos[i],ypos[i], 0., irotate[j], "ONLY"); | |
716 | ||
717 | } | |
718 | } | |
719 | ||
720 | ||
721 | // place EHOL in the centre of EPMD | |
722 | // gMC->Gspos("EHOL", 1, "EPMD", 0.,0.,0., 0, "ONLY"); | |
723 | ||
724 | // --- Place the EPMD in ALICE | |
725 | xp = 0.; | |
726 | yp = 0.; | |
727 | zp = fgkZdist; | |
728 | ||
729 | gMC->Gspos("EPMD", 1, "ALIC", xp,yp,zp, 0, "ONLY"); | |
730 | ||
731 | } | |
732 | ||
733 | ||
734 | //_____________________________________________________________________________ | |
735 | void AliPMDv0::DrawModule() const | |
736 | { | |
737 | // | |
738 | // Draw a shaded view of the Photon Multiplicity Detector | |
739 | // | |
740 | ||
741 | gMC->Gsatt("*", "seen", -1); | |
742 | gMC->Gsatt("alic", "seen", 0); | |
743 | // | |
744 | // Set the visibility of the components | |
745 | // | |
746 | gMC->Gsatt("ECAR","seen",0); | |
747 | gMC->Gsatt("ECCU","seen",1); | |
748 | gMC->Gsatt("EHC1","seen",1); | |
749 | gMC->Gsatt("EHC1","seen",1); | |
750 | gMC->Gsatt("EHC2","seen",1); | |
751 | gMC->Gsatt("EMM1","seen",1); | |
752 | gMC->Gsatt("EHOL","seen",1); | |
753 | gMC->Gsatt("EPMD","seen",0); | |
754 | // | |
755 | gMC->Gdopt("hide", "on"); | |
756 | gMC->Gdopt("shad", "on"); | |
757 | gMC->Gsatt("*", "fill", 7); | |
758 | gMC->SetClipBox("."); | |
759 | gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000); | |
760 | gMC->DefaultRange(); | |
761 | gMC->Gdraw("alic", 40, 30, 0, 22, 20.5, .02, .02); | |
762 | gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1"); | |
763 | ||
764 | //gMC->Gdman(17, 5, "MAN"); | |
765 | gMC->Gdopt("hide", "off"); | |
766 | } | |
767 | ||
768 | //_____________________________________________________________________________ | |
769 | void AliPMDv0::CreateMaterials() | |
770 | { | |
771 | // | |
772 | // Create materials for the PMD | |
773 | // | |
774 | // ORIGIN : Y. P. VIYOGI | |
775 | // | |
776 | ||
777 | // cout << " Inside create materials " << endl; | |
778 | ||
779 | Int_t isxfld = gAlice->Field()->Integ(); | |
780 | Float_t sxmgmx = gAlice->Field()->Max(); | |
781 | ||
782 | // --- Define the various materials for GEANT --- | |
783 | ||
784 | AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5); | |
785 | ||
786 | // Argon | |
787 | ||
788 | Float_t dAr = 0.001782; // --- Ar density in g/cm3 --- | |
789 | Float_t x0Ar = 19.55 / dAr; | |
790 | AliMaterial(2, "Argon$", 39.95, 18., dAr, x0Ar, 6.5e4); | |
791 | ||
792 | // --- CO2 --- | |
793 | ||
794 | Float_t aCO2[2] = { 12.,16. }; | |
795 | Float_t zCO2[2] = { 6.,8. }; | |
796 | Float_t wCO2[2] = { 1.,2. }; | |
797 | Float_t dCO2 = 0.001977; | |
798 | AliMixture(3, "CO2 $", aCO2, zCO2, dCO2, -2, wCO2); | |
799 | ||
800 | AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5); | |
801 | ||
802 | // ArCO2 | |
803 | ||
804 | Float_t aArCO2[3] = {39.948,12.0107,15.9994}; | |
805 | Float_t zArCO2[3] = {18.,6.,8.}; | |
806 | Float_t wArCO2[3] = {0.7,0.08,0.22}; | |
807 | Float_t dArCO2 = dAr * 0.7 + dCO2 * 0.3; | |
808 | AliMixture(5, "ArCO2$", aArCO2, zArCO2, dArCO2, 3, wArCO2); | |
809 | ||
810 | AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5); | |
811 | ||
812 | // G10 | |
813 | ||
814 | Float_t aG10[4]={1.,12.011,15.9994,28.086}; | |
815 | Float_t zG10[4]={1.,6.,8.,14.}; | |
816 | //PH Float_t wG10[4]={0.148648649,0.104054054,0.483499056,0.241666667}; | |
817 | Float_t wG10[4]={0.15201,0.10641,0.49444,0.24714}; | |
818 | AliMixture(8,"G10",aG10,zG10,1.7,4,wG10); | |
819 | ||
820 | AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.); | |
821 | ||
822 | // Steel | |
823 | Float_t aSteel[4] = { 55.847,51.9961,58.6934,28.0855 }; | |
824 | Float_t zSteel[4] = { 26.,24.,28.,14. }; | |
825 | Float_t wSteel[4] = { .715,.18,.1,.005 }; | |
826 | Float_t dSteel = 7.88; | |
827 | AliMixture(19, "STAINLESS STEEL$", aSteel, zSteel, dSteel, 4, wSteel); | |
828 | ||
829 | //Air | |
830 | ||
831 | Float_t aAir[4]={12.0107,14.0067,15.9994,39.948}; | |
832 | Float_t zAir[4]={6.,7.,8.,18.}; | |
833 | Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827}; | |
834 | Float_t dAir1 = 1.20479E-10; | |
835 | Float_t dAir = 1.20479E-3; | |
836 | AliMixture(98, "Vacum$", aAir, zAir, dAir1, 4, wAir); | |
837 | AliMixture(99, "Air $", aAir, zAir, dAir , 4, wAir); | |
838 | ||
839 | // Define tracking media | |
840 | AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); | |
841 | AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); | |
842 | AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .10, .1); | |
843 | AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); | |
844 | AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); | |
845 | AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); | |
846 | AliMedium(19, "S steel$", 19, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); | |
847 | AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .10, 10); | |
848 | AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .10, .1); | |
849 | ||
850 | } | |
851 | ||
852 | //_____________________________________________________________________________ | |
853 | void AliPMDv0::Init() | |
854 | { | |
855 | // | |
856 | // Initialises PMD detector after it has been built | |
857 | // | |
858 | Int_t i; | |
859 | // kdet=1; | |
860 | // | |
861 | if(AliLog::GetGlobalDebugLevel()>0) { | |
862 | printf("\n%s: ",ClassName()); | |
863 | for(i=0;i<35;i++) printf("*"); | |
864 | printf(" PMD_INIT "); | |
865 | for(i=0;i<35;i++) printf("*"); | |
866 | printf("\n%s: ",ClassName()); | |
867 | printf(" PMD simulation package (v0) initialised\n"); | |
868 | printf("%s: parameters of pmd\n", ClassName()); | |
869 | printf("%s: %10.2f %10.2f %10.2f \ | |
870 | %10.2f\n",ClassName(),fgkCellRadius,fgkCellWall,fgkCellDepth,fgkZdist ); | |
871 | printf("%s: ",ClassName()); | |
872 | for(i=0;i<80;i++) printf("*"); | |
873 | printf("\n"); | |
874 | } | |
875 | Int_t *idtmed = fIdtmed->GetArray()-599; | |
876 | fMedSens=idtmed[605-1]; | |
877 | // --- Generate explicitly delta rays in the iron, aluminium and lead --- | |
878 | gMC->Gstpar(idtmed[600], "LOSS", 3.); | |
879 | gMC->Gstpar(idtmed[600], "DRAY", 1.); | |
880 | ||
881 | gMC->Gstpar(idtmed[603], "LOSS", 3.); | |
882 | gMC->Gstpar(idtmed[603], "DRAY", 1.); | |
883 | ||
884 | gMC->Gstpar(idtmed[604], "LOSS", 3.); | |
885 | gMC->Gstpar(idtmed[604], "DRAY", 1.); | |
886 | ||
887 | gMC->Gstpar(idtmed[605], "LOSS", 3.); | |
888 | gMC->Gstpar(idtmed[605], "DRAY", 1.); | |
889 | ||
890 | gMC->Gstpar(idtmed[606], "LOSS", 3.); | |
891 | gMC->Gstpar(idtmed[606], "DRAY", 1.); | |
892 | ||
893 | gMC->Gstpar(idtmed[607], "LOSS", 3.); | |
894 | gMC->Gstpar(idtmed[607], "DRAY", 1.); | |
895 | ||
896 | // --- Energy cut-offs in the Pb and Al to gain time in tracking --- | |
897 | // --- without affecting the hit patterns --- | |
898 | gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4); | |
899 | gMC->Gstpar(idtmed[600], "CUTELE", 1e-4); | |
900 | gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4); | |
901 | gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4); | |
902 | gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4); | |
903 | gMC->Gstpar(idtmed[605], "CUTELE", 1e-4); | |
904 | gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4); | |
905 | gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4); | |
906 | gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4); | |
907 | gMC->Gstpar(idtmed[606], "CUTELE", 1e-4); | |
908 | gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4); | |
909 | gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4); | |
910 | gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4); | |
911 | gMC->Gstpar(idtmed[603], "CUTELE", 1e-4); | |
912 | gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4); | |
913 | gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4); | |
914 | // gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4); | |
915 | // gMC->Gstpar(idtmed[609], "CUTELE", 1e-4); | |
916 | // gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4); | |
917 | // gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4); | |
918 | ||
919 | // --- Prevent particles stopping in the gas due to energy cut-off --- | |
920 | gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5); | |
921 | gMC->Gstpar(idtmed[604], "CUTELE", 1e-5); | |
922 | gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5); | |
923 | gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5); | |
924 | gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5); | |
925 | } | |
926 | ||
927 | //_____________________________________________________________________________ | |
928 | void AliPMDv0::StepManager() | |
929 | { | |
930 | // | |
931 | // Called at each step in the PMD | |
932 | // | |
933 | Int_t copy; | |
934 | Float_t hits[4], destep; | |
935 | Float_t center[3] = {0,0,0}; | |
936 | Int_t vol[5]; | |
937 | //char *namep; | |
938 | ||
939 | if(gMC->CurrentMedium() == fMedSens && (destep = gMC->Edep())) { | |
940 | ||
941 | gMC->CurrentVolID(copy); | |
942 | ||
943 | //namep=gMC->CurrentVolName(); | |
944 | //printf("Current vol is %s \n",namep); | |
945 | ||
946 | vol[0]=copy; | |
947 | gMC->CurrentVolOffID(1,copy); | |
948 | ||
949 | //namep=gMC->CurrentVolOffName(1); | |
950 | //printf("Current vol 11 is %s \n",namep); | |
951 | ||
952 | vol[1]=copy; | |
953 | gMC->CurrentVolOffID(2,copy); | |
954 | ||
955 | //namep=gMC->CurrentVolOffName(2); | |
956 | //printf("Current vol 22 is %s \n",namep); | |
957 | ||
958 | vol[2]=copy; | |
959 | ||
960 | // if(strncmp(namep,"EHC1",4))vol[2]=1; | |
961 | ||
962 | gMC->CurrentVolOffID(3,copy); | |
963 | ||
964 | //namep=gMC->CurrentVolOffName(3); | |
965 | //printf("Current vol 33 is %s \n",namep); | |
966 | ||
967 | vol[3]=copy; | |
968 | gMC->CurrentVolOffID(4,copy); | |
969 | ||
970 | //namep=gMC->CurrentVolOffName(4); | |
971 | //printf("Current vol 44 is %s \n",namep); | |
972 | ||
973 | vol[4]=copy; | |
974 | //printf("volume number %d,%d,%d,%d,%d,%f \n",vol[0],vol[1],vol[2],vol[3],vol[4],destep*1000000); | |
975 | ||
976 | gMC->Gdtom(center,hits,1); | |
977 | hits[3] = destep*1e9; //Number in eV | |
978 | AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(), vol, hits); | |
979 | } | |
980 | } | |
981 | ||
982 | ||
983 | //------------------------------------------------------------------------ | |
984 | // Get parameters | |
985 | ||
986 | void AliPMDv0::GetParameters() | |
987 | { | |
988 | // This gives all the parameters of the detector | |
989 | // such as Length of Supermodules | |
990 | // thickness of the Supermodule | |
991 | // | |
992 | Int_t ncellum, numum; | |
993 | ncellum = 24; | |
994 | numum = 3; | |
995 | fNcellSM = ncellum * numum; //no. of cells in a row in one supermodule | |
996 | fSMLength = (fNcellSM + 0.25 )*fgkCellRadius*2.; | |
997 | fSMthick = fgkThBase + fgkThAir + fgkThPCB + fgkCellDepth + | |
998 | fgkThPCB + fgkThAir + fgkThPCB; | |
999 | } |