| 9e1a0ddb |
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 | $Log$ |
| 17 | Revision 1.2 2001/05/14 13:47:34 morsch |
| 18 | Obsolete versions removed. |
| 19 | |
| 20 | Revision 1.1 2001/04/06 14:09:29 morsch |
| 21 | Version 3 of the PMD. (Tapan K. Nayak) |
| 22 | |
| 23 | Revision March 2001 new geometry for relocated PMD : Viyogi |
| 24 | |
| 25 | Revision 1.8 2000/06/09 10:31:36 hristov |
| 26 | sqrt changed to TMath::Sqrt |
| 27 | |
| 28 | Revision 1.7 1999/11/03 18:01:40 fca |
| 29 | Remove non orthogonal unused matrix |
| 30 | |
| 31 | Revision 1.6 1999/09/29 09:24:28 fca |
| 32 | Introduction of the Copyright and cvs Log |
| 33 | |
| 34 | */ |
| 35 | // |
| 36 | /////////////////////////////////////////////////////////////////////////////// |
| 37 | // // |
| 38 | // Photon Multiplicity Detector Version 1 // |
| 39 | // // |
| 40 | //Begin_Html |
| 41 | /* |
| 42 | <img src="picts/AliPMDv3Class.gif"> |
| 43 | */ |
| 44 | //End_Html |
| 45 | // // |
| 46 | /////////////////////////////////////////////////////////////////////////////// |
| 47 | //// |
| 48 | |
| 49 | #include "AliPMDv3.h" |
| 50 | #include "AliRun.h" |
| 51 | #include "AliMagF.h" |
| 52 | #include "AliMC.h" |
| 53 | #include "AliConst.h" |
| 54 | #include "iostream.h" |
| 55 | |
| 56 | static Int_t kdet, ncell_sm, ncell_hole; |
| 57 | static Float_t zdist, zdist1; |
| 58 | static Float_t sm_length, sm_thick, cell_radius, cell_wall, cell_depth; |
| 59 | static Float_t boundary, th_base, th_air, th_pcb; |
| 60 | static Float_t th_lead, th_steel; |
| 61 | |
| 62 | ClassImp(AliPMDv3) |
| 63 | |
| 64 | //_____________________________________________________________________________ |
| 65 | AliPMDv3::AliPMDv3() |
| 66 | { |
| 67 | // |
| 68 | // Default constructor |
| 69 | // |
| 70 | fMedSens=0; |
| 71 | } |
| 72 | |
| 73 | //_____________________________________________________________________________ |
| 74 | AliPMDv3::AliPMDv3(const char *name, const char *title) |
| 75 | : AliPMD(name,title) |
| 76 | { |
| 77 | // |
| 78 | // Standard constructor |
| 79 | // |
| 80 | fMedSens=0; |
| 81 | } |
| 82 | |
| 83 | //_____________________________________________________________________________ |
| 84 | void AliPMDv3::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/AliPMDv3.gif"> |
| 93 | */ |
| 94 | //End_Html |
| 95 | //Begin_Html |
| 96 | /* |
| 97 | <img src="picts/AliPMDv3Tree.gif"> |
| 98 | */ |
| 99 | //End_Html |
| 100 | GetParameters(); |
| 101 | CreateSupermodule(); |
| 102 | CreatePMD(); |
| 103 | } |
| 104 | |
| 105 | //_____________________________________________________________________________ |
| 106 | void AliPMDv3::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 10 MM SQUARE EQUIVALENT |
| 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 (ESM1 or ESM2), 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 | // ESM1 is placed in EMM1 along with EMPB (Pb converter) and EMFE (iron support) |
| 129 | // EMM1 made of |
| 130 | // ESM1 --> Normal supermodule |
| 131 | // EMPB --> Pb converter |
| 132 | // EMFE --> Fe backing |
| 133 | // |
| 134 | // ESM2 is placed in EMM2 along with EMPB (Pb converter) and EMFE (iron support) |
| 135 | // EMM2 made of |
| 136 | // ESM2 --> Special supermodule containing the cut for the hole |
| 137 | // EMPB --> Pb converter |
| 138 | // EMFE --> Fe backing |
| 139 | |
| 140 | // |
| 141 | // EPMD |
| 142 | // | |
| 143 | // | |
| 144 | // ------------------------------------------------------------------- |
| 145 | // | | | | |
| 146 | // EHOL EMM1 EMM2 EALM |
| 147 | // | | |
| 148 | // ---------------------- ------------------------ |
| 149 | // | | | | | | | | |
| 150 | // ESM1 EMPB EMFE ESM1 ESM2 EMPB EMFE ESM2 |
| 151 | // | | |
| 152 | // ------------ ------------- |
| 153 | // | | | | | | |
| 154 | // EAIR EHC1 EAIR EAIR EHC2 EAIR |
| 155 | // | | |
| 156 | // ECCU ECCU |
| 157 | // | | |
| 158 | // ECAR ECAR |
| 159 | |
| 160 | |
| 161 | Int_t i, j; |
| 162 | Float_t xb, yb, zb; |
| 163 | Int_t number; |
| 164 | Int_t ihrotm,irotdm; |
| 165 | const Float_t root3_2 = TMath::Sqrt(3.) /2.; |
| 166 | Int_t *idtmed = fIdtmed->GetArray()-599; |
| 167 | |
| 168 | AliMatrix(ihrotm, 90., 30., 90., 120., 0., 0.); |
| 169 | AliMatrix(irotdm, 90., 180., 90., 270., 180., 0.); |
| 170 | |
| 171 | zdist = TMath::Abs(zdist1); |
| 172 | |
| 173 | |
| 174 | //Subhasis, dimensional parameters of rhombus (dpara) as given to gsvolu |
| 175 | // rhombus to accomodate 72 x 72 hexagons, and with total 1.2cm extension |
| 176 | //(1mm tolerance on both side and 5mm thick G10 wall) |
| 177 | // |
| 178 | |
| 179 | // **** CELL SIZE 20mm^2 EQUIVALENT |
| 180 | |
| 181 | // Inner hexagon filled with gas (Ar+CO2) |
| 182 | |
| 183 | Float_t hexd2[10] = {0.,360.,6,2,-0.25,0.,0.23,0.25,0.,0.23}; |
| 184 | |
| 185 | hexd2[4]= - cell_depth/2.; |
| 186 | hexd2[7]= cell_depth/2.; |
| 187 | hexd2[6]= cell_radius - cell_wall; |
| 188 | hexd2[9]= cell_radius - cell_wall; |
| 189 | |
| 190 | gMC->Gsvolu("ECAR", "PGON", idtmed[604], hexd2,10); |
| 191 | gMC->Gsatt("ECAR", "SEEN", 0); |
| 192 | |
| 193 | // Outer hexagon made of Copper |
| 194 | |
| 195 | Float_t hexd1[10] = {0.,360.,6,2,-0.25,0.,0.25,0.25,0.,0.25}; |
| 196 | //total wall thickness=0.2*2 |
| 197 | |
| 198 | hexd1[4]= - cell_depth/2.; |
| 199 | hexd1[7]= cell_depth/2.; |
| 200 | hexd1[6]= cell_radius; |
| 201 | hexd1[9]= cell_radius; |
| 202 | |
| 203 | gMC->Gsvolu("ECCU", "PGON", idtmed[614], hexd1,10); |
| 204 | gMC->Gsatt("ECCU", "SEEN", 1); |
| 205 | |
| 206 | |
| 207 | // Rhombus shaped supermodules (defined by PARA) |
| 208 | |
| 209 | // volume for SUPERMODULE |
| 210 | |
| 211 | Float_t dpara_sm[6] = {12.5,12.5,0.8,30.,0.,0.}; |
| 212 | dpara_sm[0]=(ncell_sm+0.25)*hexd1[6] ; |
| 213 | dpara_sm[1] = dpara_sm[0] *root3_2; |
| 214 | dpara_sm[2] = sm_thick/2.; |
| 215 | |
| 216 | // G10 inner part of supermodule, these will be 9 in all, one being special |
| 217 | |
| 218 | Float_t dpara_g10[6] = {12.5,12.5,8.,30.,0.,0.}; |
| 219 | dpara_g10[0]= dpara_sm[0]; |
| 220 | dpara_g10[1]= dpara_sm[1]; |
| 221 | dpara_g10[2]= dpara_sm[2]; |
| 222 | |
| 223 | // |
| 224 | gMC->Gsvolu("ESM1","PARA", idtmed[607], dpara_g10, 6); |
| 225 | gMC->Gsatt("ESM1", "SEEN", 0); |
| 226 | // |
| 227 | gMC->Gsvolu("ESM2","PARA", idtmed[607], dpara_g10, 6); |
| 228 | gMC->Gsatt("ESM2", "SEEN", 0); |
| 229 | |
| 230 | // Air residing between the PCB and the base |
| 231 | |
| 232 | Float_t dpara_air[6] = {12.5,12.5,8.,30.,0.,0.}; |
| 233 | dpara_air[0]= dpara_sm[0]; |
| 234 | dpara_air[1]= dpara_sm[1]; |
| 235 | dpara_air[2]= th_air/2.; |
| 236 | |
| 237 | gMC->Gsvolu("EAIR","PARA", idtmed[698], dpara_air, 6); |
| 238 | gMC->Gsatt("EAIR", "SEEN", 0); |
| 239 | |
| 240 | // volume for honeycomb chamber (EHC1 and EHC2) |
| 241 | |
| 242 | Float_t dpara[6] = {12.5,12.5,0.4,30.,0.,0.}; |
| 243 | dpara[0] = dpara_sm[0]; |
| 244 | dpara[1] = dpara_sm[1]; |
| 245 | dpara[2] = cell_depth/2.; |
| 246 | |
| 247 | gMC->Gsvolu("EHC1","PARA", idtmed[698], dpara, 6); |
| 248 | gMC->Gsatt("EHC1", "SEEN", 1); |
| 249 | |
| 250 | gMC->Gsvolu("EHC2","PARA", idtmed[698], dpara, 6); |
| 251 | gMC->Gsatt("EHC2", "SEEN", 1); |
| 252 | |
| 253 | // --- place inner hex inside outer hex |
| 254 | |
| 255 | gMC->Gsposp("ECAR", 1, "ECCU", 0., 0., 0., 0, "ONLY", hexd2, 10); |
| 256 | |
| 257 | // Place outer hex ECCU cells inside EHC1 (72 X 72) |
| 258 | |
| 259 | Int_t xrow=1; |
| 260 | |
| 261 | yb = -dpara[1] + (1./root3_2)*hexd1[6]; |
| 262 | zb = 0.; |
| 263 | |
| 264 | for (j = 1; j <= ncell_sm; ++j) { |
| 265 | xb =-(dpara[0] + dpara[1]*0.577) + 2*hexd1[6]; //0.577=tan(30deg) |
| 266 | if(xrow >= 2){ |
| 267 | xb = xb+(xrow-1)*hexd1[6]; |
| 268 | } |
| 269 | for (i = 1; i <= ncell_sm; ++i) { |
| 270 | number = i+(j-1)*ncell_sm; |
| 271 | gMC->Gsposp("ECCU", number, "EHC1", xb,yb,zb, ihrotm, "ONLY", hexd1,10); |
| 272 | xb += (hexd1[6]*2.); |
| 273 | } |
| 274 | xrow = xrow+1; |
| 275 | yb += (hexd1[6]*TMath::Sqrt(3.)); |
| 276 | } |
| 277 | |
| 278 | |
| 279 | // Place outer hex ECCU inside EHC2 |
| 280 | // skip cells which go into the hole in top left corner. |
| 281 | |
| 282 | xrow=1; |
| 283 | yb = -dpara[1] + (1./root3_2)*hexd1[6]; |
| 284 | zb = 0.; |
| 285 | for (j = 1; j <= ncell_sm; ++j) { |
| 286 | xb =-(dpara[0] + dpara[1]*0.577) + 2*hexd1[6]; |
| 287 | if(xrow >= 2){ |
| 288 | xb = xb+(xrow-1)*hexd1[6]; |
| 289 | } |
| 290 | for (i = 1; i <= ncell_sm; ++i) { |
| 291 | number = i+(j-1)*ncell_sm; |
| 292 | if(i > ncell_hole || j <= (ncell_sm - ncell_hole)) |
| 293 | { |
| 294 | gMC->Gsposp("ECCU", number, "EHC2", xb,yb,zb, ihrotm, "ONLY", hexd1,10); |
| 295 | } |
| 296 | xb += (hexd1[6]*2.); |
| 297 | } |
| 298 | xrow = xrow+1; |
| 299 | yb += (hexd1[6]*TMath::Sqrt(3.)); |
| 300 | } |
| 301 | |
| 302 | // Place EHC1 and EAIR into ESM1; EHC2 and EAIR into ESM2 |
| 303 | |
| 304 | Float_t z_air1,z_air2,z_gas; |
| 305 | |
| 306 | z_air1= -dpara_g10[2] + th_base + dpara_air[2]; |
| 307 | gMC->Gspos("EAIR", 1, "ESM1", 0., 0., z_air1, 0, "ONLY"); |
| 308 | z_gas=z_air1+dpara_air[2]+ th_pcb + dpara[2]; |
| 309 | gMC->Gspos("EHC1", 1, "ESM1", 0., 0., z_gas, 0, "ONLY"); |
| 310 | z_air2=z_gas+dpara[2]+ th_pcb + dpara_air[2]; |
| 311 | gMC->Gspos("EAIR", 2, "ESM1", 0., 0., z_air2, 0, "ONLY"); |
| 312 | |
| 313 | z_air1= -dpara_g10[2] + th_base + dpara_air[2]; |
| 314 | gMC->Gspos("EAIR", 1, "ESM2", 0., 0., z_air1, 0, "ONLY"); |
| 315 | z_gas=z_air1+dpara_air[2]+ th_pcb + dpara[2]; |
| 316 | gMC->Gspos("EHC2", 1, "ESM2", 0., 0., z_gas, 0, "ONLY"); |
| 317 | z_air2=z_gas+dpara[2]+ th_pcb + dpara_air[2]; |
| 318 | gMC->Gspos("EAIR", 2, "ESM2", 0., 0., z_air2, 0, "ONLY"); |
| 319 | |
| 320 | } |
| 321 | |
| 322 | //_____________________________________________________________________________ |
| 323 | |
| 324 | void AliPMDv3::CreatePMD() |
| 325 | { |
| 326 | // |
| 327 | // Create final detector from supermodules |
| 328 | // |
| 329 | // -- Author : Y.P. VIYOGI, 07/05/1996. |
| 330 | // -- Modified: P.V.K.S.Baba(JU), 15-12-97. |
| 331 | // -- Modified: For New Geometry YPV, March 2001. |
| 332 | |
| 333 | |
| 334 | // Gaspmd, the dimension of TUBE mother volume of PMD, |
| 335 | |
| 336 | Float_t gaspmd[3] = { 0.,150.,10.}; |
| 337 | |
| 338 | const Float_t root3_2 = TMath::Sqrt(3.)/2.; |
| 339 | const Float_t pi = 3.14159; |
| 340 | Int_t i,j; |
| 341 | |
| 342 | Float_t xp, yp, zp; |
| 343 | |
| 344 | Int_t num_mod; |
| 345 | Int_t jhrot12,jhrot13, irotdm; |
| 346 | |
| 347 | Int_t *idtmed = fIdtmed->GetArray()-599; |
| 348 | |
| 349 | // VOLUMES Names : begining with D for all PMD volumes, |
| 350 | // The names of SIZE variables begin with S and have more meaningful |
| 351 | // characters as shown below. |
| 352 | |
| 353 | // VOLUME SIZE MEDIUM : REMARKS |
| 354 | // ------ ----- ------ : --------------------------- |
| 355 | |
| 356 | // EPMD GASPMD AIR : INSIDE PMD and its SIZE |
| 357 | |
| 358 | // *** Define the EPMD Volume and fill with air *** |
| 359 | |
| 360 | gMC->Gsvolu("EPMD", "TUBE", idtmed[698], gaspmd, 3); |
| 361 | gMC->Gsatt("EPMD", "SEEN", 0); |
| 362 | |
| 363 | AliMatrix(irotdm, 90., 0., 90., 90., 180., 0.); |
| 364 | |
| 365 | AliMatrix(jhrot12, 90., 120., 90., 210., 0., 0.); |
| 366 | AliMatrix(jhrot13, 90., 240., 90., 330., 0., 0.); |
| 367 | |
| 368 | // dpara_emm1 array contains parameters of the imaginary volume EMM1, |
| 369 | // this is just a little more than the side of a supermodule. |
| 370 | |
| 371 | Float_t dm_thick = 2. * sm_thick + th_lead + th_steel; |
| 372 | |
| 373 | Float_t dpara_emm1[6] = {12.5,12.5,0.8,30.,0.,0.}; |
| 374 | dpara_emm1[0] = sm_length/2.; |
| 375 | dpara_emm1[1] = dpara_emm1[0] *root3_2; |
| 376 | dpara_emm1[2] = dm_thick/2.; |
| 377 | |
| 378 | // EMM1 : normal volume as in old cases |
| 379 | gMC->Gsvolu("EMM1","PARA", idtmed[698], dpara_emm1, 6); |
| 380 | gMC->Gsatt("EMM1", "SEEN", 1); |
| 381 | |
| 382 | // EMM2 : special volume containing special supermodule |
| 383 | gMC->Gsvolu("EMM2","PARA", idtmed[698], dpara_emm1, 6); |
| 384 | gMC->Gsatt("EMM2", "SEEN", 1); |
| 385 | |
| 386 | // |
| 387 | // --- DEFINE MODules, iron, and lead voLUMES |
| 388 | |
| 389 | //place ESM1 into EMM1 and ESM2 into EMM2 along with EMPB and EMFE |
| 390 | |
| 391 | Float_t dx = sm_length; |
| 392 | Float_t dy = dx * root3_2; |
| 393 | |
| 394 | Float_t xsup[9] = {-dx/2., dx/2., 3.*dx/2., |
| 395 | -dx, 0., dx, |
| 396 | -3.*dx/2., -dx/2., dx/2.}; |
| 397 | |
| 398 | Float_t ysup[9] = {dy, dy, dy, |
| 399 | 0., 0., 0., |
| 400 | -dy, -dy, -dy}; |
| 401 | |
| 402 | // |
| 403 | |
| 404 | // volume for SUPERMODULE |
| 405 | |
| 406 | // Pb Convertor |
| 407 | Float_t dpara_pb[6] = {12.5,12.5,8.,30.,0.,0.}; |
| 408 | dpara_pb[0] = sm_length/2.; |
| 409 | dpara_pb[1] = dpara_pb[0] * root3_2; |
| 410 | dpara_pb[2] = th_lead/2.; |
| 411 | |
| 412 | gMC->Gsvolu("EMPB","PARA", idtmed[600], dpara_pb, 6); |
| 413 | gMC->Gsatt ("EMPB", "SEEN", 0); |
| 414 | |
| 415 | // Fe Support |
| 416 | Float_t dpara_fe[6] = {12.5,12.5,8.,30.,0.,0.}; |
| 417 | dpara_fe[0] = dpara_pb[0]; |
| 418 | dpara_fe[1] = dpara_pb[1]; |
| 419 | dpara_fe[2] = th_steel/2.; |
| 420 | |
| 421 | gMC->Gsvolu("EMFE","PARA", idtmed[618], dpara_fe, 6); |
| 422 | gMC->Gsatt ("EMFE", "SEEN", 0); |
| 423 | |
| 424 | // position supermodule ESM1 inside EMM1 |
| 425 | |
| 426 | Float_t z_ps,z_pb,z_fe,z_cv; |
| 427 | |
| 428 | z_ps = - dpara_emm1[2] + sm_thick/2.; |
| 429 | gMC->Gspos("ESM1", 2, "EMM1", 0., 0., z_ps, irotdm, "ONLY"); |
| 430 | z_pb=z_ps+sm_thick/2.+dpara_pb[2]; |
| 431 | gMC->Gspos("EMPB", 1, "EMM1", 0., 0., z_pb, 0, "ONLY"); |
| 432 | z_fe=z_pb+dpara_pb[2]+dpara_fe[2]; |
| 433 | gMC->Gspos("EMFE", 1, "EMM1", 0., 0., z_fe, 0, "ONLY"); |
| 434 | z_cv=z_fe+dpara_fe[2]+sm_thick/2.; |
| 435 | gMC->Gspos("ESM1", 1, "EMM1", 0., 0., z_cv, 0, "ONLY"); |
| 436 | |
| 437 | // position supermodule ESM2 inside EMM2 |
| 438 | |
| 439 | z_ps = - dpara_emm1[2] + sm_thick/2.; |
| 440 | gMC->Gspos("ESM2", 2, "EMM2", 0., 0., z_ps, irotdm, "ONLY"); |
| 441 | z_pb = z_ps + sm_thick/2.+dpara_pb[2]; |
| 442 | gMC->Gspos("EMPB", 1, "EMM2", 0., 0., z_pb, 0, "ONLY"); |
| 443 | z_fe = z_pb + dpara_pb[2]+dpara_fe[2]; |
| 444 | gMC->Gspos("EMFE", 1, "EMM2", 0., 0., z_fe, 0, "ONLY"); |
| 445 | z_cv = z_fe + dpara_fe[2]+sm_thick/2.; |
| 446 | gMC->Gspos("ESM2", 1, "EMM2", 0., 0., z_cv, 0, "ONLY"); |
| 447 | // |
| 448 | |
| 449 | // EHOL is a tube structure made of air |
| 450 | |
| 451 | Float_t d_hole[3]; |
| 452 | d_hole[0] = 0.; |
| 453 | d_hole[1] = ncell_hole * cell_radius *2. * root3_2 + boundary; |
| 454 | d_hole[2] = dm_thick/2.; |
| 455 | |
| 456 | gMC->Gsvolu("EHOL", "TUBE", idtmed[698], d_hole, 3); |
| 457 | gMC->Gsatt("EHOL", "SEEN", 1); |
| 458 | |
| 459 | //Al-rod as boundary of the supermodules |
| 460 | |
| 461 | Float_t Al_rod[3] ; |
| 462 | Al_rod[0] = sm_length * 3/2.; |
| 463 | Al_rod[1] = boundary; |
| 464 | Al_rod[2] = dm_thick/2.; |
| 465 | |
| 466 | gMC->Gsvolu("EALM","BOX ", idtmed[698], Al_rod, 3); |
| 467 | gMC->Gsatt ("EALM", "SEEN", 1); |
| 468 | Float_t xalm[3]; |
| 469 | xalm[0]=Al_rod[0]; |
| 470 | xalm[1]=-xalm[0]/2.; |
| 471 | xalm[2]=xalm[1]; |
| 472 | |
| 473 | Float_t yalm[3]; |
| 474 | yalm[0]=0.; |
| 475 | yalm[1]=xalm[0]*root3_2; |
| 476 | yalm[2]=-yalm[1]; |
| 477 | |
| 478 | // delx = full side of the supermodule |
| 479 | Float_t delx=sm_length * 3.; |
| 480 | Float_t x1= delx*root3_2 /2.; |
| 481 | Float_t x4=delx/4.; |
| 482 | |
| 483 | // xpos and ypos are the x & y coordinates of the centres of EMM1 volumes |
| 484 | |
| 485 | Float_t xoff = boundary * TMath::Tan(pi/6.); |
| 486 | Float_t xmod[3]={x4 + xoff , x4 + xoff, -2.*x4-boundary/root3_2}; |
| 487 | Float_t ymod[3] = {-x1 - boundary, x1 + boundary, 0.}; |
| 488 | Float_t xpos[9], ypos[9]; |
| 489 | Float_t theta[3] = {0., 2.*pi/3., 4.*pi/3.}; |
| 490 | Int_t irotate[3] = {0, jhrot12, jhrot13}; |
| 491 | |
| 492 | for (j=0; j<3; ++j) |
| 493 | { |
| 494 | gMC->Gsposp("EALM", j+1, "EPMD", xalm[j],yalm[j], 0., irotate[j], "ONLY", Al_rod, 3); |
| 495 | for (i=0; i<9; ++i) |
| 496 | { |
| 497 | xpos[i]=xmod[j] + xsup[i]*TMath::Cos(theta[j]) - ysup[i]*TMath::Sin(theta[j]); |
| 498 | ypos[i]=ymod[j] + xsup[i]*TMath::Sin(theta[j]) + ysup[i]*TMath::Cos(theta[j]); |
| 499 | |
| 500 | if(fDebug) printf("%s: %f %f \n", ClassName(), xpos[i], ypos[i]); |
| 501 | |
| 502 | num_mod = i + 1 + j*9; |
| 503 | |
| 504 | printf("\n%s: Num_mod %d\n",ClassName(),num_mod); |
| 505 | |
| 506 | if(i==0){ |
| 507 | gMC->Gsposp("EMM2", num_mod, "EPMD", xpos[i],ypos[i], 0., irotate[j], "ONLY", dpara_emm1, 6); |
| 508 | } |
| 509 | else { |
| 510 | gMC->Gsposp("EMM1", num_mod, "EPMD", xpos[i],ypos[i], 0., irotate[j], "ONLY", dpara_emm1, 6); |
| 511 | } |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | |
| 516 | // place EHOL in the centre of EPMD |
| 517 | gMC->Gspos("EHOL", 1, "EPMD", 0.,0.,0., 0, "ONLY"); |
| 518 | |
| 519 | // --- Place the EPMD in ALICE |
| 520 | xp = 0.; |
| 521 | yp = 0.; |
| 522 | zp = zdist1; |
| 523 | |
| 524 | gMC->Gspos("EPMD", 1, "ALIC", xp,yp,zp, 0, "ONLY"); |
| 525 | |
| 526 | } |
| 527 | |
| 528 | |
| 529 | //_____________________________________________________________________________ |
| 530 | void AliPMDv3::DrawModule() |
| 531 | { |
| 532 | // |
| 533 | // Draw a shaded view of the Photon Multiplicity Detector |
| 534 | // |
| 535 | |
| 536 | gMC->Gsatt("*", "seen", -1); |
| 537 | gMC->Gsatt("alic", "seen", 0); |
| 538 | // |
| 539 | // Set the visibility of the components |
| 540 | // |
| 541 | gMC->Gsatt("ECAR","seen",0); |
| 542 | gMC->Gsatt("ECCU","seen",1); |
| 543 | gMC->Gsatt("EHC1","seen",1); |
| 544 | gMC->Gsatt("EHC1","seen",1); |
| 545 | gMC->Gsatt("EHC2","seen",1); |
| 546 | gMC->Gsatt("EMM1","seen",1); |
| 547 | gMC->Gsatt("EHOL","seen",1); |
| 548 | gMC->Gsatt("EPMD","seen",0); |
| 549 | // |
| 550 | gMC->Gdopt("hide", "on"); |
| 551 | gMC->Gdopt("shad", "on"); |
| 552 | gMC->Gsatt("*", "fill", 7); |
| 553 | gMC->SetClipBox("."); |
| 554 | gMC->SetClipBox("*", 0, 3000, -3000, 3000, -6000, 6000); |
| 555 | gMC->DefaultRange(); |
| 556 | gMC->Gdraw("alic", 40, 30, 0, 22, 20.5, .02, .02); |
| 557 | gMC->Gdhead(1111, "Photon Multiplicity Detector Version 1"); |
| 558 | |
| 559 | //gMC->Gdman(17, 5, "MAN"); |
| 560 | gMC->Gdopt("hide", "off"); |
| 561 | } |
| 562 | |
| 563 | //_____________________________________________________________________________ |
| 564 | void AliPMDv3::CreateMaterials() |
| 565 | { |
| 566 | // |
| 567 | // Create materials for the PMD |
| 568 | // |
| 569 | // ORIGIN : Y. P. VIYOGI |
| 570 | // |
| 571 | |
| 572 | // --- The Argon- CO2 mixture --- |
| 573 | Float_t ag[2] = { 39.95 }; |
| 574 | Float_t zg[2] = { 18. }; |
| 575 | Float_t wg[2] = { .8,.2 }; |
| 576 | Float_t dar = .001782; // --- Ar density in g/cm3 --- |
| 577 | // --- CO2 --- |
| 578 | Float_t ac[2] = { 12.,16. }; |
| 579 | Float_t zc[2] = { 6.,8. }; |
| 580 | Float_t wc[2] = { 1.,2. }; |
| 581 | Float_t dc = .001977; |
| 582 | Float_t dco = .002; // --- CO2 density in g/cm3 --- |
| 583 | |
| 584 | Float_t absl, radl, a, d, z; |
| 585 | Float_t dg; |
| 586 | Float_t x0ar; |
| 587 | //Float_t x0xe=2.4; |
| 588 | //Float_t dxe=0.005858; |
| 589 | Float_t buf[1]; |
| 590 | Int_t nbuf; |
| 591 | Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 }; |
| 592 | Float_t zsteel[4] = { 26.,24.,28.,14. }; |
| 593 | Float_t wsteel[4] = { .715,.18,.1,.005 }; |
| 594 | |
| 595 | Int_t *idtmed = fIdtmed->GetArray()-599; |
| 596 | Int_t isxfld = gAlice->Field()->Integ(); |
| 597 | Float_t sxmgmx = gAlice->Field()->Max(); |
| 598 | |
| 599 | // --- Define the various materials for GEANT --- |
| 600 | AliMaterial(1, "Pb $", 207.19, 82., 11.35, .56, 18.5); |
| 601 | x0ar = 19.55 / dar; |
| 602 | AliMaterial(2, "Argon$", 39.95, 18., dar, x0ar, 6.5e4); |
| 603 | AliMixture(3, "CO2 $", ac, zc, dc, -2, wc); |
| 604 | AliMaterial(4, "Al $", 26.98, 13., 2.7, 8.9, 18.5); |
| 605 | AliMaterial(6, "Fe $", 55.85, 26., 7.87, 1.76, 18.5); |
| 606 | AliMaterial(7, "W $", 183.85, 74., 19.3, .35, 10.3); |
| 607 | AliMaterial(8, "G10 $", 20., 10., 1.7, 19.4, 999.); |
| 608 | AliMaterial(9, "SILIC$", 28.09, 14., 2.33, 9.36, 45.); |
| 609 | AliMaterial(10, "Be $", 9.01, 4., 1.848, 35.3, 36.7); |
| 610 | AliMaterial(15, "Cu $", 63.54, 29., 8.96, 1.43, 15.); |
| 611 | AliMaterial(16, "C $", 12.01, 6., 2.265, 18.8, 49.9); |
| 612 | AliMaterial(17, "POLYCARBONATE $", 20., 10., 1.2, 34.6, 999.); |
| 613 | AliMixture(19, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel); |
| 614 | // AliMaterial(31, "Xenon$", 131.3, 54., dxe, x0xe, 6.5e4); |
| 615 | |
| 616 | AliMaterial(96, "MYLAR$", 8.73, 4.55, 1.39, 28.7, 62.); |
| 617 | AliMaterial(97, "CONCR$", 20., 10., 2.5, 10.7, 40.); |
| 618 | AliMaterial(98, "Vacum$", 1e-9, 1e-9, 1e-9, 1e16, 1e16); |
| 619 | AliMaterial(99, "Air $", 14.61, 7.3, .0012, 30420., 67500.); |
| 620 | |
| 621 | // define gas-mixtures |
| 622 | |
| 623 | char namate[21]; |
| 624 | gMC->Gfmate((*fIdmate)[3], namate, a, z, d, radl, absl, buf, nbuf); |
| 625 | ag[1] = a; |
| 626 | zg[1] = z; |
| 627 | dg = (dar * 4 + dco) / 5; |
| 628 | AliMixture(5, "ArCO2$", ag, zg, dg, 2, wg); |
| 629 | |
| 630 | // Define tracking media |
| 631 | AliMedium(1, "Pb conv.$", 1, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); |
| 632 | AliMedium(7, "W conv.$", 7, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); |
| 633 | AliMedium(8, "G10plate$", 8, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); |
| 634 | AliMedium(4, "Al $", 4, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 635 | AliMedium(6, "Fe $", 6, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 636 | AliMedium(5, "ArCO2 $", 5, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1); |
| 637 | AliMedium(9, "SILICON $", 9, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1); |
| 638 | AliMedium(10, "Be $", 10, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 639 | AliMedium(98, "Vacuum $", 98, 0, 0, isxfld, sxmgmx, 1., .1, .1, 10); |
| 640 | AliMedium(99, "Air gaps$", 99, 0, 0, isxfld, sxmgmx, 1., .1, .1, .1); |
| 641 | AliMedium(15, "Cu $", 15, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 642 | AliMedium(16, "C $", 16, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 643 | AliMedium(17, "PLOYCARB$", 17, 0, 0, isxfld, sxmgmx, .1, .1, .01, .1); |
| 644 | AliMedium(19, " S steel$", 19, 0, 0, isxfld, sxmgmx, 1., .1, .01, .1); |
| 645 | // AliMedium(31, "Xenon $", 31, 1, 0, isxfld, sxmgmx, .1, .1, .1, .1); |
| 646 | |
| 647 | // --- Generate explicitly delta rays in the iron, aluminium and lead --- |
| 648 | gMC->Gstpar(idtmed[600], "LOSS", 3.); |
| 649 | gMC->Gstpar(idtmed[600], "DRAY", 1.); |
| 650 | |
| 651 | gMC->Gstpar(idtmed[603], "LOSS", 3.); |
| 652 | gMC->Gstpar(idtmed[603], "DRAY", 1.); |
| 653 | |
| 654 | gMC->Gstpar(idtmed[604], "LOSS", 3.); |
| 655 | gMC->Gstpar(idtmed[604], "DRAY", 1.); |
| 656 | |
| 657 | gMC->Gstpar(idtmed[605], "LOSS", 3.); |
| 658 | gMC->Gstpar(idtmed[605], "DRAY", 1.); |
| 659 | |
| 660 | gMC->Gstpar(idtmed[606], "LOSS", 3.); |
| 661 | gMC->Gstpar(idtmed[606], "DRAY", 1.); |
| 662 | |
| 663 | gMC->Gstpar(idtmed[607], "LOSS", 3.); |
| 664 | gMC->Gstpar(idtmed[607], "DRAY", 1.); |
| 665 | |
| 666 | // --- Energy cut-offs in the Pb and Al to gain time in tracking --- |
| 667 | // --- without affecting the hit patterns --- |
| 668 | gMC->Gstpar(idtmed[600], "CUTGAM", 1e-4); |
| 669 | gMC->Gstpar(idtmed[600], "CUTELE", 1e-4); |
| 670 | gMC->Gstpar(idtmed[600], "CUTNEU", 1e-4); |
| 671 | gMC->Gstpar(idtmed[600], "CUTHAD", 1e-4); |
| 672 | gMC->Gstpar(idtmed[605], "CUTGAM", 1e-4); |
| 673 | gMC->Gstpar(idtmed[605], "CUTELE", 1e-4); |
| 674 | gMC->Gstpar(idtmed[605], "CUTNEU", 1e-4); |
| 675 | gMC->Gstpar(idtmed[605], "CUTHAD", 1e-4); |
| 676 | gMC->Gstpar(idtmed[606], "CUTGAM", 1e-4); |
| 677 | gMC->Gstpar(idtmed[606], "CUTELE", 1e-4); |
| 678 | gMC->Gstpar(idtmed[606], "CUTNEU", 1e-4); |
| 679 | gMC->Gstpar(idtmed[606], "CUTHAD", 1e-4); |
| 680 | gMC->Gstpar(idtmed[603], "CUTGAM", 1e-4); |
| 681 | gMC->Gstpar(idtmed[603], "CUTELE", 1e-4); |
| 682 | gMC->Gstpar(idtmed[603], "CUTNEU", 1e-4); |
| 683 | gMC->Gstpar(idtmed[603], "CUTHAD", 1e-4); |
| 684 | gMC->Gstpar(idtmed[609], "CUTGAM", 1e-4); |
| 685 | gMC->Gstpar(idtmed[609], "CUTELE", 1e-4); |
| 686 | gMC->Gstpar(idtmed[609], "CUTNEU", 1e-4); |
| 687 | gMC->Gstpar(idtmed[609], "CUTHAD", 1e-4); |
| 688 | |
| 689 | // --- Prevent particles stopping in the gas due to energy cut-off --- |
| 690 | gMC->Gstpar(idtmed[604], "CUTGAM", 1e-5); |
| 691 | gMC->Gstpar(idtmed[604], "CUTELE", 1e-5); |
| 692 | gMC->Gstpar(idtmed[604], "CUTNEU", 1e-5); |
| 693 | gMC->Gstpar(idtmed[604], "CUTHAD", 1e-5); |
| 694 | gMC->Gstpar(idtmed[604], "CUTMUO", 1e-5); |
| 695 | } |
| 696 | |
| 697 | //_____________________________________________________________________________ |
| 698 | void AliPMDv3::Init() |
| 699 | { |
| 700 | // |
| 701 | // Initialises PMD detector after it has been built |
| 702 | // |
| 703 | Int_t i; |
| 704 | kdet=1; |
| 705 | // |
| 706 | if(fDebug) { |
| 707 | printf("\n%s: ",ClassName()); |
| 708 | for(i=0;i<35;i++) printf("*"); |
| 709 | printf(" PMD_INIT "); |
| 710 | for(i=0;i<35;i++) printf("*"); |
| 711 | printf("\n"); |
| 712 | printf("%s: PMD simulation package (v3) initialised\n", |
| 713 | ClassName()); |
| 714 | printf("%s: parameters of pmd\n",ClassName()); |
| 715 | printf("%s: %10.2f %10.2f %10.2f %10.2f\n",ClassName(), |
| 716 | cell_radius,cell_wall,cell_depth,zdist1 ); |
| 717 | printf("%s: ",ClassName()); |
| 718 | for(i=0;i<80;i++) printf("*"); |
| 719 | printf("\n"); |
| 720 | } |
| 721 | |
| 722 | Int_t *idtmed = fIdtmed->GetArray()-599; |
| 723 | fMedSens=idtmed[605-1]; |
| 724 | } |
| 725 | |
| 726 | //_____________________________________________________________________________ |
| 727 | void AliPMDv3::StepManager() |
| 728 | { |
| 729 | // |
| 730 | // Called at each step in the PMD |
| 731 | // |
| 732 | Int_t copy; |
| 733 | Float_t hits[4], destep; |
| 734 | Float_t center[3] = {0,0,0}; |
| 735 | Int_t vol[5]; |
| 736 | //char *namep; |
| 737 | |
| 738 | if(gMC->GetMedium() == fMedSens && (destep = gMC->Edep())) { |
| 739 | |
| 740 | gMC->CurrentVolID(copy); |
| 741 | |
| 742 | //namep=gMC->CurrentVolName(); |
| 743 | //printf("Current vol is %s \n",namep); |
| 744 | |
| 745 | vol[0]=copy; |
| 746 | gMC->CurrentVolOffID(1,copy); |
| 747 | |
| 748 | //namep=gMC->CurrentVolOffName(1); |
| 749 | //printf("Current vol 11 is %s \n",namep); |
| 750 | |
| 751 | vol[1]=copy; |
| 752 | gMC->CurrentVolOffID(2,copy); |
| 753 | |
| 754 | //namep=gMC->CurrentVolOffName(2); |
| 755 | //printf("Current vol 22 is %s \n",namep); |
| 756 | |
| 757 | vol[2]=copy; |
| 758 | |
| 759 | // if(strncmp(namep,"EHC1",4))vol[2]=1; |
| 760 | |
| 761 | gMC->CurrentVolOffID(3,copy); |
| 762 | |
| 763 | //namep=gMC->CurrentVolOffName(3); |
| 764 | //printf("Current vol 33 is %s \n",namep); |
| 765 | |
| 766 | vol[3]=copy; |
| 767 | gMC->CurrentVolOffID(4,copy); |
| 768 | |
| 769 | //namep=gMC->CurrentVolOffName(4); |
| 770 | //printf("Current vol 44 is %s \n",namep); |
| 771 | |
| 772 | vol[4]=copy; |
| 773 | //printf("volume number %d,%d,%d,%d,%d,%f \n",vol[0],vol[1],vol[2],vol[3],vol[4],destep*1000000); |
| 774 | |
| 775 | gMC->Gdtom(center,hits,1); |
| 776 | hits[3] = destep*1e9; //Number in eV |
| 777 | AddHit(gAlice->CurrentTrack(), vol, hits); |
| 778 | } |
| 779 | } |
| 780 | |
| 781 | |
| 782 | //------------------------------------------------------------------------ |
| 783 | // Get parameters |
| 784 | |
| 785 | void AliPMDv3::GetParameters() |
| 786 | { |
| 787 | Int_t ncell_um, num_um; |
| 788 | ncell_um=24; |
| 789 | num_um=3; |
| 790 | ncell_hole=12; |
| 791 | cell_radius=0.25; |
| 792 | cell_wall=0.02; |
| 793 | cell_depth=0.25 * 2.; |
| 794 | // |
| 795 | boundary=0.7; |
| 796 | ncell_sm=ncell_um * num_um; //no. of cells in a row in one supermodule |
| 797 | sm_length= ((ncell_sm + 0.25 ) * cell_radius) * 2.; |
| 798 | // |
| 799 | th_base=0.3; |
| 800 | th_air=0.1; |
| 801 | th_pcb=0.16; |
| 802 | // |
| 803 | sm_thick = th_base + th_air + th_pcb + cell_depth + th_pcb + th_air + th_pcb; |
| 804 | // |
| 805 | th_lead=1.5; |
| 806 | th_steel=0.5; |
| 807 | // |
| 808 | zdist1 = -370.; |
| 809 | } |
| 810 | |
| 811 | |
| 812 | |
| 813 | |
| 814 | |
| 815 | |
| 816 | |
| 817 | |
| 818 | |
| 819 | |
| 820 | |
| 821 | |
| 822 | |
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