RICH/AliRICHv3.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 #include "AliRICHv3.h"
  17 #include "AliRun.h"
  18 #include "AliMC.h"
  19 #include "AliMagF.h"
  20
  21 #include "AliConst.h"
  22 #include "AliPDG.h"
  23
  24 #include <iostream.h>
  25 #include <TNode.h>
  26 #include <TGeometry.h>
  27 #include <TBRIK.h>
  28
  29 #include <TLorentzVector.h>
  30 #include <TVector3.h>
  31 #include <TParticle.h>
  32
  33
  34 #include "AliRICHGeometry.h"
  35 #include "AliRICHSegmentationV1.h"
  36 #include "AliRICHResponseV0.h"
  37 #include "AliRICHHit.h"
  38
  39 ClassImp(AliRICHv3)
  40
  41 //______________________________________________________________
  42 //    Implementation of the RICH version 3 with azimuthal rotation
  43
  44
  45 AliRICHv3::AliRICHv3(const char *sName, const char *sTitle)
  46           :AliRICH(sName,sTitle)
  47 {
  48 // The named ctor currently creates a single copy of
  49 // AliRICHGeometry AliRICHSegmentationV1 AliRICHResponseV0
  50 // and initialises the corresponding models of all 7 chambers with these stuctures.
  51 // Note: all chambers share the single copy of models. MUST be changed later (???).
  52    cout<<ClassName()<<"::named ctor(sName,sTitle)>\n"; // no way to control it as ctor is called before call to SetDebugXXXX()
  53
  54    fCkovNumber=fFreonProd=fDebugLevel=0;
  55
  56    AliRICHGeometry       *pRICHGeometry    =new AliRICHGeometry;           // ??? to be moved to AlRICHChamber::named ctor
  57    AliRICHSegmentationV1 *pRICHSegmentation=new AliRICHSegmentationV1;     // ??? to be moved to AlRICHChamber::named ctor
  58    AliRICHResponseV0     *pRICHResponse    =new AliRICHResponseV0;         // ??? to be moved to AlRICHChamber::named ctor
  59
  60    fChambers = new TObjArray(kNCH);
  61    for (Int_t i=0; i<kNCH; i++){
  62       fChambers->AddAt(new AliRICHChamber,i); // ??? to be changed to named ctor of AliRICHChamber
  63       SetGeometryModel(i,pRICHGeometry);
  64       SetSegmentationModel(i,pRICHSegmentation);
  65       SetResponseModel(i,pRICHResponse);
  66       ((AliRICHChamber*)fChambers->At(i))->Init(i); // ??? to be removed
  67    }
  68 }//AliRICHv3::ctor(const char *pcName, const char *pcTitle)
  69
  70 AliRICHv3::~AliRICHv3()
  71 {
  72 // Dtor deletes RICH models. In future (???) AliRICHChamber will be responsible for that.
  73    if(IsDebugStart()) cout<<ClassName()<<"::dtor()>\n";
  74
  75    delete GetChamber(0)->GetGeometryModel();
  76    delete GetChamber(0)->GetResponseModel();
  77    delete GetChamber(0)->GetSegmentationModel();
  78 }//AliRICHv3::dtor()
  79
  80 void AliRICHv3::CreateMaterials()
  81 {
  82 // Provides material definition for simulation (currently GEANT)
  83    if(IsDebugStart()) cout<<ClassName()<<"::CreateMaterials()>\n";
  84
  85    Int_t   isxfld = gAlice->Field()->Integ();
  86    Float_t sxmgmx = gAlice->Field()->Max();
  87    Int_t i;
  88
  89
  90     //Photons energy intervals
  91     Float_t ppckov[26];
  92     for (i=0;i<26;i++)
  93     {
  94         ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9;
  95         //printf ("Energy intervals: %e\n",ppckov[i]);
  96     }
  97
  98
  99     //Refraction index for quarz
 100     Float_t rIndexQuarz[26];
 101     Float_t  e1= 10.666;
 102     Float_t  e2= 18.125;
 103     Float_t  f1= 46.411;
 104     Float_t  f2= 228.71;
 105     for (i=0;i<26;i++)
 106     {
 107         Float_t ene=ppckov[i]*1e9;
 108         Float_t a=f1/(e1*e1 - ene*ene);
 109         Float_t b=f2/(e2*e2 - ene*ene);
 110         rIndexQuarz[i] = TMath::Sqrt(1. + a + b );
 111         //printf ("rIndexQuarz: %e\n",rIndexQuarz[i]);
 112     }
 113
 114     //Refraction index for opaque quarz, methane and grid
 115     Float_t rIndexOpaqueQuarz[26];
 116     Float_t rIndexMethane[26];
 117     Float_t rIndexGrid[26];
 118     for (i=0;i<26;i++)
 119     {
 120         rIndexOpaqueQuarz[i]=1;
 121         rIndexMethane[i]=1.000444;
 122         rIndexGrid[i]=1;
 123         //printf ("rIndexOpaqueQuarz , etc: %e, %e, %e\n",rIndexOpaqueQuarz[i], rIndexMethane[i], rIndexGrid[i]=1);
 124     }
 125
 126     //Absorption index for freon
 127     Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987,  179.0987, 179.0987, 179.0987,
 128                                179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196,
 129                                7.069031, 4.461292, 2.028366, 1.293013, .577267,   .40746,  .334964, 0., 0., 0.};
 130
 131
 132     Float_t abscoQuarz [26] = {105.8, 65.52, 48.58, 42.85, 35.79, 31.262, 28.598, 27.527, 25.007, 22.815, 21.004,
 133                                 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627,
 134                                 .192, .1497, .10857};
 135
 136     //Absorption index for methane
 137     Float_t abscoMethane[26];
 138     for (i=0;i<26;i++)
 139     {
 140         abscoMethane[i]=AbsoCH4(ppckov[i]*1e9);
 141         //printf("abscoMethane: %e for energy: %e\n", abscoMethane[i],ppckov[i]*1e9);
 142     }
 143
 144     //Absorption index for opaque quarz, csi and grid, efficiency for all and grid
 145     Float_t abscoOpaqueQuarz[26];
 146     Float_t abscoCsI[26];
 147     Float_t abscoGrid[26];
 148     Float_t efficAll[26];
 149     Float_t efficGrid[26];
 150     for (i=0;i<26;i++)
 151     {
 152         abscoOpaqueQuarz[i]=1e-5;
 153         abscoCsI[i]=1e-4;
 154         abscoGrid[i]=1e-4;
 155         efficAll[i]=1;
 156         efficGrid[i]=1;
 157     }
 158
 159     //Efficiency for csi
 160
 161     Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125,
 162                              0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999,
 163                              0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592,
 164                              0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987};
 165
 166
 167
 168     //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND
 169     //UNPOLARIZED PHOTONS
 170
 171     for (i=0;i<26;i++)
 172     {
 173         efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0));
 174     }
 175
 176
 177     Float_t afre[2], agri, amet[2], aqua[2], ahon, zfre[2], zgri, zhon,
 178     zmet[2], zqua[2];
 179     Int_t nlmatfre;
 180     Float_t densquao;
 181     Int_t nlmatmet, nlmatqua;
 182     Float_t wmatquao[2], rIndexFreon[26];
 183     Float_t aquao[2], epsil, stmin, zquao[2];
 184     Int_t nlmatquao;
 185     Float_t radlal, densal, tmaxfd, deemax, stemax;
 186     Float_t aal, zal, radlgri, densfre, radlhon, densgri, denshon,densqua, densmet, wmatfre[2], wmatmet[2], wmatqua[2];
 187
 188     Int_t *idtmed = fIdtmed->GetArray()-999;
 189
 190     // --- Photon energy (GeV)
 191     // --- Refraction indexes
 192     for (i = 0; i < 26; ++i) {
 193       rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177;
 194       //rIndexFreon[i] = 1;
 195         //printf ("rIndexFreon: %e \n efficCsI: %e for energy: %e\n",rIndexFreon[i], efficCsI[i], ppckov[i]);
 196     }
 197
 198     // --- Detection efficiencies (quantum efficiency for CsI)
 199     // --- Define parameters for honeycomb.
 200     //     Used carbon of equivalent rad. lenght
 201
 202     ahon    = 12.01;
 203     zhon    = 6.;
 204     denshon = 0.1;
 205     radlhon = 18.8;
 206
 207     // --- Parameters to include in GSMIXT, relative to Quarz (SiO2)
 208
 209     aqua[0]    = 28.09;
 210     aqua[1]    = 16.;
 211     zqua[0]    = 14.;
 212     zqua[1]    = 8.;
 213     densqua    = 2.64;
 214     nlmatqua   = -2;
 215     wmatqua[0] = 1.;
 216     wmatqua[1] = 2.;
 217
 218     // --- Parameters to include in GSMIXT, relative to opaque Quarz (SiO2)
 219
 220     aquao[0]    = 28.09;
 221     aquao[1]    = 16.;
 222     zquao[0]    = 14.;
 223     zquao[1]    = 8.;
 224     densquao    = 2.64;
 225     nlmatquao   = -2;
 226     wmatquao[0] = 1.;
 227     wmatquao[1] = 2.;
 228
 229     // --- Parameters to include in GSMIXT, relative to Freon (C6F14)
 230
 231     afre[0]    = 12.;
 232     afre[1]    = 19.;
 233     zfre[0]    = 6.;
 234     zfre[1]    = 9.;
 235     densfre    = 1.7;
 236     nlmatfre   = -2;
 237     wmatfre[0] = 6.;
 238     wmatfre[1] = 14.;
 239
 240     // --- Parameters to include in GSMIXT, relative to methane (CH4)
 241
 242     amet[0]    = 12.01;
 243     amet[1]    = 1.;
 244     zmet[0]    = 6.;
 245     zmet[1]    = 1.;
 246     densmet    = 7.17e-4;
 247     nlmatmet   = -2;
 248     wmatmet[0] = 1.;
 249     wmatmet[1] = 4.;
 250
 251     // --- Parameters to include in GSMIXT, relative to anode grid (Cu)
 252
 253     agri    = 63.54;
 254     zgri    = 29.;
 255     densgri = 8.96;
 256     radlgri = 1.43;
 257
 258     // --- Parameters to include in GSMATE related to aluminium sheet
 259
 260     aal    = 26.98;
 261     zal    = 13.;
 262     densal = 2.7;
 263     radlal = 8.9;
 264
 265     // --- Glass parameters
 266
 267     Float_t aglass[5]={12.01, 28.09, 16.,   10.8,  23.};
 268     Float_t zglass[5]={ 6.,   14.,    8.,    5.,   11.};
 269     Float_t wglass[5]={ 0.5,  0.105, 0.355, 0.03,  0.01};
 270     Float_t dglass=1.74;
 271
 272
 273     AliMaterial(1, "Air     $", 14.61, 7.3, .001205, 30420., 67500);
 274     AliMaterial(6, "HON", ahon, zhon, denshon, radlhon, 0);
 275     AliMaterial(16, "CSI", ahon, zhon, denshon, radlhon, 0);
 276     AliMixture(20, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
 277     AliMixture(21, "QUAO", aquao, zquao, densquao, nlmatquao, wmatquao);
 278     AliMixture(30, "FRE", afre, zfre, densfre, nlmatfre, wmatfre);
 279     AliMixture(40, "MET", amet, zmet, densmet, nlmatmet, wmatmet);
 280     AliMixture(41, "METG", amet, zmet, densmet, nlmatmet, wmatmet);
 281     AliMaterial(11, "GRI", agri, zgri, densgri, radlgri, 0);
 282     AliMaterial(50, "ALUM", aal, zal, densal, radlal, 0);
 283     AliMixture(32, "GLASS",aglass, zglass, dglass, 5, wglass);
 284     AliMaterial(31, "COPPER$",   63.54,    29.,   8.96,  1.4, 0.);
 285
 286     tmaxfd = -10.;
 287     stemax = -.1;
 288     deemax = -.2;
 289     epsil  = .001;
 290     stmin  = -.001;
 291
 292     AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 293     AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 294     AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 295     AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 296     AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 297     AliMedium(6, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
 298     AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 299     AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 300     AliMedium(9, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, .1, -deemax, epsil, -stmin);
 301     AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 302     AliMedium(11, "GLASS", 32, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 303     AliMedium(12, "PCB_COPPER", 31, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
 304
 305
 306     gMC->SetCerenkov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
 307     gMC->SetCerenkov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
 308     gMC->SetCerenkov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll,rIndexQuarz);
 309     gMC->SetCerenkov(idtmed[1003], 26, ppckov, abscoFreon, efficAll,rIndexFreon);
 310     gMC->SetCerenkov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
 311     gMC->SetCerenkov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane);
 312     gMC->SetCerenkov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
 313     gMC->SetCerenkov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
 314     gMC->SetCerenkov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
 315     gMC->SetCerenkov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
 316     gMC->SetCerenkov(idtmed[1010], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
 317 }//AliRICHv3::CreateMaterials()
 318
 319
 320 void AliRICHv3::CreateGeometry()
 321 {
 322 // Provides geometry structure for simulation (currently GEANT volumes tree)
 323    if(IsDebugStart()) cout<<ClassName()<<"::CreateGeometry()>\n";
 324
 325   AliRICH *pRICH = (AliRICH *) gAlice->GetDetector("RICH");
 326   AliRICHSegmentationV0*  segmentation;
 327   AliRICHGeometry*  geometry;
 328   AliRICHChamber*       iChamber;
 329
 330   iChamber = &(pRICH->Chamber(0));
 331   segmentation=(AliRICHSegmentationV0*) iChamber->GetSegmentationModel(0);
 332   geometry=iChamber->GetGeometryModel();
 333
 334   Float_t distance;
 335   distance = geometry->GetFreonThickness()/2 + geometry->GetQuartzThickness() + geometry->GetGapThickness();
 336   geometry->SetRadiatorToPads(distance);
 337
 338   //Opaque quartz thickness
 339   Float_t oqua_thickness = .5;
 340   //CsI dimensions
 341
 342
 343   Float_t csi_width = segmentation->Npx()*segmentation->Dpx() + segmentation->DeadZone();
 344   Float_t csi_length = segmentation->Npy()*segmentation->Dpy() + 2*segmentation->DeadZone();
 345
 346
 347   Int_t *idtmed = fIdtmed->GetArray()-999;
 348
 349     Int_t i;
 350     Float_t zs;
 351     Int_t idrotm[1099];
 352     Float_t par[3];
 353
 354     // --- Define the RICH detector
 355     //     External aluminium box
 356     par[0] = 68.8;
 357     par[1] = 13;                 //Original Settings
 358     par[2] = 70.86;
 359     gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
 360
 361     //     Air
 362     par[0] = 66.3;
 363     par[1] = 13;                 //Original Settings
 364     par[2] = 68.35;
 365     gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
 366
 367     //    Air 2 (cutting the lower part of the box)
 368
 369     par[0] = 1.25;
 370     par[1] = 3;                 //Original Settings
 371     par[2] = 70.86;
 372     gMC->Gsvolu("AIR2", "BOX ", idtmed[1000], par, 3);
 373
 374     //    Air 3 (cutting the lower part of the box)
 375
 376     par[0] = 66.3;
 377     par[1] = 3;                 //Original Settings
 378     par[2] = 1.2505;
 379     gMC->Gsvolu("AIR3", "BOX ", idtmed[1000], par, 3);
 380
 381     //     Honeycomb
 382     par[0] = 66.3;
 383     par[1] = .188;                 //Original Settings
 384     par[2] = 68.35;
 385     gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
 386
 387     //     Aluminium sheet
 388     par[0] = 66.3;
 389     par[1] = .025;                 //Original Settings
 390     par[2] = 68.35;
 391     /*par[0] = 66.5;
 392     par[1] = .025;
 393     par[2] = 63.1;*/
 394     gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
 395
 396     //     Quartz
 397     par[0] = geometry->GetQuartzWidth()/2;
 398     par[1] = geometry->GetQuartzThickness()/2;
 399     par[2] = geometry->GetQuartzLength()/2;
 400     gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
 401
 402     //     Spacers (cylinders)
 403     par[0] = 0.;
 404     par[1] = .5;
 405     par[2] = geometry->GetFreonThickness()/2;
 406     gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
 407
 408     //     Feet (freon slabs supports)
 409
 410     par[0] = .7;
 411     par[1] = .3;
 412     par[2] = 1.9;
 413     gMC->Gsvolu("FOOT", "BOX", idtmed[1009], par, 3);
 414
 415     //     Opaque quartz
 416     par[0] = geometry->GetQuartzWidth()/2;
 417     par[1] = .2;
 418     par[2] = geometry->GetQuartzLength()/2;
 419     gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
 420
 421     //     Frame of opaque quartz
 422     par[0] = geometry->GetOuterFreonWidth()/2;
 423     par[1] = geometry->GetFreonThickness()/2;
 424     par[2] = geometry->GetOuterFreonLength()/2;
 425     gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
 426
 427     par[0] = geometry->GetInnerFreonWidth()/2;
 428     par[1] = geometry->GetFreonThickness()/2;
 429     par[2] = geometry->GetInnerFreonLength()/2;
 430     gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
 431
 432
 433     //     Freon
 434     par[0] = geometry->GetOuterFreonWidth()/2 - oqua_thickness;
 435     par[1] = geometry->GetFreonThickness()/2;
 436     par[2] = geometry->GetOuterFreonLength()/2 - 2*oqua_thickness;
 437     gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
 438
 439     par[0] = geometry->GetInnerFreonWidth()/2 - oqua_thickness;
 440     par[1] = geometry->GetFreonThickness()/2;
 441     par[2] = geometry->GetInnerFreonLength()/2 - 2*oqua_thickness;
 442     gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
 443
 444     //     Methane
 445     par[0] = csi_width/2;
 446     par[1] = geometry->GetGapThickness()/2;
 447     par[2] = csi_length/2;
 448     gMC->Gsvolu("META", "BOX ", idtmed[1004], par, 3);
 449
 450     //     Methane gap
 451     par[0] = csi_width/2;
 452     par[1] = geometry->GetProximityGapThickness()/2;
 453     par[2] = csi_length/2;
 454     gMC->Gsvolu("GAP ", "BOX ", idtmed[1008], par, 3);
 455
 456     //     CsI photocathode
 457     par[0] = csi_width/2;
 458     par[1] = .25;
 459     par[2] = csi_length/2;
 460     gMC->Gsvolu("CSI ", "BOX ", idtmed[1005], par, 3);
 461
 462     //     Anode grid
 463     par[0] = 0.;
 464     par[1] = .001;
 465     par[2] = 20.;
 466     gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
 467
 468     // Wire supports
 469     // Bar of metal
 470
 471     par[0] = csi_width/2;
 472     par[1] = 1.05;
 473     par[2] = 1.05;
 474     gMC->Gsvolu("WSMe", "BOX ", idtmed[1009], par, 3);
 475
 476     // Ceramic pick up (base)
 477
 478     par[0] =  csi_width/2;
 479     par[1] = .25;
 480     par[2] = 1.05;
 481     gMC->Gsvolu("WSG1", "BOX ", idtmed[1010], par, 3);
 482
 483     // Ceramic pick up (head)
 484
 485     par[0] = csi_width/2;
 486     par[1] = .1;
 487     par[2] = .1;
 488     gMC->Gsvolu("WSG2", "BOX ", idtmed[1010], par, 3);
 489
 490     // Aluminium supports for methane and CsI
 491     // Short bar
 492
 493     par[0] = csi_width/2;
 494     par[1] = geometry->GetGapThickness()/2 + .25;
 495     par[2] = (68.35 - csi_length/2)/2;
 496     gMC->Gsvolu("SMSH", "BOX", idtmed[1009], par, 3);
 497
 498     // Long bar
 499
 500     par[0] = (66.3 - csi_width/2)/2;
 501     par[1] = geometry->GetGapThickness()/2 + .25;
 502     par[2] = csi_length/2 + 68.35 - csi_length/2;
 503     gMC->Gsvolu("SMLG", "BOX", idtmed[1009], par, 3);
 504
 505     // Aluminium supports for freon
 506     // Short bar
 507
 508     par[0] = geometry->GetQuartzWidth()/2;
 509     par[1] = .3;
 510     par[2] = (68.35 - geometry->GetQuartzLength()/2)/2;
 511     gMC->Gsvolu("SFSH", "BOX", idtmed[1009], par, 3);
 512
 513     // Long bar
 514
 515     par[0] = (66.3 - geometry->GetQuartzWidth()/2)/2;
 516     par[1] = .3;
 517     par[2] = geometry->GetQuartzLength()/2 + 68.35 - geometry->GetQuartzLength()/2;
 518     gMC->Gsvolu("SFLG", "BOX", idtmed[1009], par, 3);
 519
 520     // PCB backplane
 521
 522     par[0] = csi_width/2;
 523     par[1] = .25;
 524     par[2] = csi_length/4 -.5025;
 525     gMC->Gsvolu("PCB ", "BOX", idtmed[1011], par, 3);
 526
 527
 528     // Backplane supports
 529
 530     // Aluminium slab
 531
 532     par[0] = 33.15;
 533     par[1] = 2;
 534     par[2] = 21.65;
 535     gMC->Gsvolu("BACK", "BOX", idtmed[1009], par, 3);
 536
 537     // Big hole
 538
 539     par[0] = 9.05;
 540     par[1] = 2;
 541     par[2] = 4.4625;
 542     gMC->Gsvolu("BKHL", "BOX", idtmed[1000], par, 3);
 543
 544     // Small hole
 545
 546     par[0] = 5.7;
 547     par[1] = 2;
 548     par[2] = 4.4625;
 549     gMC->Gsvolu("BKHS", "BOX", idtmed[1000], par, 3);
 550
 551     // Place holes inside backplane support
 552
 553     gMC->Gspos("BKHS", 1, "BACK", .8 + 5.7,0., .6 + 4.4625, 0, "ONLY");
 554     gMC->Gspos("BKHS", 2, "BACK", -.8 - 5.7,0., .6 + 4.4625, 0, "ONLY");
 555     gMC->Gspos("BKHS", 3, "BACK", .8 + 5.7,0., -.6 - 4.4625, 0, "ONLY");
 556     gMC->Gspos("BKHS", 4, "BACK", -.8 - 5.7,0., -.6 - 4.4625, 0, "ONLY");
 557     gMC->Gspos("BKHS", 5, "BACK", .8 + 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
 558     gMC->Gspos("BKHS", 6, "BACK", -.8 - 5.7,0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
 559     gMC->Gspos("BKHS", 7, "BACK", .8 + 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
 560     gMC->Gspos("BKHS", 8, "BACK", -.8 - 5.7,0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
 561     gMC->Gspos("BKHL", 1, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., .6 + 4.4625, 0, "ONLY");
 562     gMC->Gspos("BKHL", 2, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 4.4625, 0, "ONLY");
 563     gMC->Gspos("BKHL", 3, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 4.4625, 0, "ONLY");
 564     gMC->Gspos("BKHL", 4, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 4.4625, 0, "ONLY");
 565     gMC->Gspos("BKHL", 5, "BACK", .8 + 11.4+ 1.6 + 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
 566     gMC->Gspos("BKHL", 6, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., .6 + 8.925 + 1.2 + 4.4625, 0, "ONLY");
 567     gMC->Gspos("BKHL", 7, "BACK", .8 + 11.4 + 1.6 + 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
 568     gMC->Gspos("BKHL", 8, "BACK", -.8 - 11.4 - 1.6 - 9.05, 0., -.6 - 8.925 - 1.2 - 4.4625, 0, "ONLY");
 569
 570
 571
 572     // --- Places the detectors defined with GSVOLU
 573     //     Place material inside RICH
 574     gMC->Gspos("SRIC", 1, "RICH", 0.,0., 0., 0, "ONLY");
 575     gMC->Gspos("AIR2", 1, "RICH", 66.3 + 1.2505, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY");
 576     gMC->Gspos("AIR2", 2, "RICH", -66.3 - 1.2505, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, 0., 0, "ONLY");
 577     gMC->Gspos("AIR3", 1, "RICH", 0.,  1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35, -68.35 - 1.25, 0, "ONLY");
 578     gMC->Gspos("AIR3", 2, "RICH", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .376 -.5 - 3.35,  68.35 + 1.25, 0, "ONLY");
 579
 580
 581     gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .376 -.025, 0., 0, "ONLY");
 582     gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- geometry->GetGapThickness()/2  - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .05 - .188, 0., 0, "ONLY");
 583     gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .6 - .025, 0., 0, "ONLY");
 584     gMC->Gspos("FOOT", 1, "SRIC", 64.95, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, 36.9, 0, "ONLY");
 585     gMC->Gspos("FOOT", 2, "SRIC", 21.65, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3 , 36.9, 0, "ONLY");
 586     gMC->Gspos("FOOT", 3, "SRIC", -21.65, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, 36.9, 0, "ONLY");
 587     gMC->Gspos("FOOT", 4, "SRIC", -64.95, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, 36.9, 0, "ONLY");
 588     gMC->Gspos("FOOT", 5, "SRIC", 64.95, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, -36.9, 0, "ONLY");
 589     gMC->Gspos("FOOT", 6, "SRIC", 21.65, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, -36.9, 0, "ONLY");
 590     gMC->Gspos("FOOT", 7, "SRIC", -21.65, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, -36.9, 0, "ONLY");
 591     gMC->Gspos("FOOT", 8, "SRIC", -64.95, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .3, -36.9, 0, "ONLY");
 592     gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .2, 0., 0, "ONLY");
 593
 594     // Supports placing
 595
 596     // Methane supports
 597     gMC->Gspos("SMLG", 1, "SRIC", csi_width/2 + (66.3 - csi_width/2)/2, 1.276 + .25, 0., 0, "ONLY");
 598     gMC->Gspos("SMLG", 2, "SRIC", - csi_width/2 - (66.3 - csi_width/2)/2, 1.276 + .25, 0., 0, "ONLY");
 599     gMC->Gspos("SMSH", 1, "SRIC", 0., 1.276 + .25, csi_length/2 + (68.35 - csi_length/2)/2, 0, "ONLY");
 600     gMC->Gspos("SMSH", 2, "SRIC", 0., 1.276 + .25, - csi_length/2 - (68.35 - csi_length/2)/2, 0, "ONLY");
 601
 602     //Freon supports
 603
 604     Float_t supp_y = 1.276 - geometry->GetGapThickness()/2- geometry->GetQuartzThickness() -geometry->GetFreonThickness() - .2 + .3; //y position of freon supports
 605
 606     gMC->Gspos("SFLG", 1, "SRIC", geometry->GetQuartzWidth()/2 + (66.3 - geometry->GetQuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
 607     gMC->Gspos("SFLG", 2, "SRIC", - geometry->GetQuartzWidth()/2 - (66.3 - geometry->GetQuartzWidth()/2)/2, supp_y, 0., 0, "ONLY");
 608     gMC->Gspos("SFSH", 1, "SRIC", 0., supp_y, geometry->GetQuartzLength()/2 + (68.35 - geometry->GetQuartzLength()/2)/2, 0, "ONLY");
 609     gMC->Gspos("SFSH", 2, "SRIC", 0., supp_y, - geometry->GetQuartzLength()/2 - (68.35 - geometry->GetQuartzLength()/2)/2, 0, "ONLY");
 610
 611     AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
 612
 613
 614     Int_t nspacers = 30;
 615
 616     for (i = 0; i < nspacers/3; i++) {
 617         zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
 618         gMC->Gspos("SPAC", i, "FRE1", 10.5, 0., zs, idrotm[1019], "ONLY");  //Original settings
 619     }
 620
 621     for (i = nspacers/3; i < (nspacers*2)/3; i++) {
 622         zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
 623         gMC->Gspos("SPAC", i, "FRE1", 0, 0., zs, idrotm[1019], "ONLY");  //Original settings
 624     }
 625
 626     for (i = (nspacers*2)/3; i < nspacers; ++i) {
 627         zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
 628         gMC->Gspos("SPAC", i, "FRE1", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
 629     }
 630
 631     for (i = 0; i < nspacers/3; i++) {
 632         zs = -11.6/2 + (TMath::Abs(nspacers/6) - i) * 12.2;
 633         gMC->Gspos("SPAC", i, "FRE2", 10.5, 0., zs, idrotm[1019], "ONLY");  //Original settings
 634     }
 635
 636     for (i = nspacers/3; i < (nspacers*2)/3; i++) {
 637         zs = -11.6/2 + (nspacers/3 + TMath::Abs(nspacers/6) - i) * 12.2;
 638         gMC->Gspos("SPAC", i, "FRE2", 0, 0., zs, idrotm[1019], "ONLY");  //Original settings
 639     }
 640
 641     for (i = (nspacers*2)/3; i < nspacers; ++i) {
 642         zs = -11.6/2 + ((nspacers*2)/3 + TMath::Abs(nspacers/6) - i) * 12.2;
 643         gMC->Gspos("SPAC", i, "FRE2", -10.5, 0., zs, idrotm[1019], "ONLY"); //Original settings
 644     }
 645
 646
 647     gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
 648     gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
 649     gMC->Gspos("OQF1", 1, "SRIC", geometry->GetOuterFreonWidth()/2 + geometry->GetInnerFreonWidth()/2 + 2, 1.276 - geometry->GetGapThickness()/2- geometry->GetQuartzThickness() -geometry->GetFreonThickness()/2, 0., 0, "ONLY"); //Original settings (31.3)
 650     gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()/2, 0., 0, "ONLY");          //Original settings
 651     gMC->Gspos("OQF1", 3, "SRIC", - (geometry->GetOuterFreonWidth()/2 + geometry->GetInnerFreonWidth()/2) - 2, 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()/2, 0., 0, "ONLY");       //Original settings (-31.3)
 652     gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness()/2, 0., 0, "ONLY");
 653     gMC->Gspos("GAP ", 1, "META", 0., geometry->GetGapThickness()/2 - geometry->GetProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY");
 654     gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
 655     gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + geometry->GetGapThickness()/2 + .25, 0., 0, "ONLY");
 656     printf("CSI pos: %f\n",1.276 + geometry->GetGapThickness()/2 + .25);
 657
 658     // Wire support placing
 659
 660     gMC->Gspos("WSG2", 1, "GAP ", 0., geometry->GetProximityGapThickness()/2 - .1, 0., 0, "ONLY");
 661     gMC->Gspos("WSG1", 1, "CSI ", 0., 0., 0., 0, "ONLY");
 662     gMC->Gspos("WSMe", 1, "SRIC ", 0., 1.276 + geometry->GetGapThickness()/2 + .5 + 1.05, 0., 0, "ONLY");
 663
 664     // Backplane placing
 665
 666     gMC->Gspos("BACK", 1, "SRIC ", -33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2, 43.3, 0, "ONLY");
 667     gMC->Gspos("BACK", 2, "SRIC ", 33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2 , 43.3, 0, "ONLY");
 668     gMC->Gspos("BACK", 3, "SRIC ", -33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
 669     gMC->Gspos("BACK", 4, "SRIC ", 33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2, 0., 0, "ONLY");
 670     gMC->Gspos("BACK", 5, "SRIC ", 33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
 671     gMC->Gspos("BACK", 6, "SRIC ", -33.15, 1.276 + geometry->GetGapThickness()/2 + .5 + 2.1 + 2, -43.3, 0, "ONLY");
 672
 673     // PCB placing
 674
 675     gMC->Gspos("PCB ", 1, "SRIC ", 0.,  1.276 + geometry->GetGapThickness()/2 + .5 + 1.05, csi_width/4 + .5025 + 2.5, 0, "ONLY");
 676     gMC->Gspos("PCB ", 2, "SRIC ", 0.,  1.276 + geometry->GetGapThickness()/2 + .5 + 1.05, -csi_width/4 - .5025 - 2.5, 0, "ONLY");
 677
 678 // Place chambers into mother volume ALIC
 679
 680    Double_t dOffset        = geometry->GetOffset() - geometry->GetGapThickness()/2;  // distance from center of mother volume ALIC to methane
 681
 682    Double_t dAlpha         = geometry->GetAlphaAngle(); // angle between centers of chambers - y-z plane
 683    Double_t dAlphaRad      = dAlpha*kDegrad;
 684
 685    Double_t dBeta          = geometry->GetBetaAngle();   // angle between center of chambers - y-x plane
 686    Double_t dBetaRad       = dBeta*kDegrad;
 687
 688    Double_t dRotAngle      = geometry->GetRotationAngle();     // the whole RICH is to be rotated in x-y plane + means clockwise rotation
 689    Double_t dRotAngleRad   = dRotAngle*kDegrad;
 690
 691
 692    TRotMatrix *pRotMatrix; // tmp pointer
 693
 694    TVector3 vector(0,dOffset,0); // Position of chamber 2 without rotation
 695
 696 // Chamber 0  standalone (no other chambers in this row)
 697                    AliMatrix(idrotm[1000],      90, -dRotAngle           , 90-dAlpha     , 90-dRotAngle        , dAlpha        , -90           );
 698    pRotMatrix=new TRotMatrix("rot993","rot993", 90, -dRotAngle           , 90-dAlpha     , 90-dRotAngle        , dAlpha        , -90           );
 699
 700    vector.SetXYZ(0,dOffset,0);  vector.RotateX(dAlphaRad);
 701    vector.RotateZ(-dRotAngleRad);
 702
 703    gMC->Gspos("RICH",1,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1000], "ONLY");
 704    Chamber(0).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 705 // Chamber 1
 706                    AliMatrix(idrotm[1001],      90, -dBeta-dRotAngle     , 90            , 90-dBeta-dRotAngle  , 0             ,   0           );
 707    pRotMatrix=new TRotMatrix("rot994","rot994", 90, -dBeta-dRotAngle     , 90            , 90-dBeta-dRotAngle  , 0             ,   0           );
 708
 709    vector.SetXYZ(0,dOffset,0);  vector.RotateZ(-dBetaRad);
 710    vector.RotateZ(-dRotAngleRad);
 711
 712    gMC->Gspos("RICH",2,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1001], "ONLY");
 713    Chamber(1).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 714 // Chamber 2   the top one with no Alpha-Beta rotation
 715                    AliMatrix(idrotm[1002],      90, -dRotAngle           , 90            , 90-dRotAngle        , 0             ,   0           );
 716    pRotMatrix=new TRotMatrix("rot995","rot995", 90, -dRotAngle           , 90            , 90-dRotAngle        , 0             ,   0           );
 717
 718    vector.SetXYZ(0,dOffset,0);
 719    vector.RotateZ(-dRotAngleRad);
 720
 721    gMC->Gspos("RICH",3,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1002], "ONLY");
 722    Chamber(2).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 723 // Chamber 3
 724                    AliMatrix(idrotm[1003],      90,  dBeta-dRotAngle     , 90.           , 90+dBeta-dRotAngle  , 0             ,   0           );
 725    pRotMatrix=new TRotMatrix("rot996","rot996", 90,  dBeta-dRotAngle     , 90.           , 90+dBeta-dRotAngle  , 0             ,   0           );
 726
 727    vector.SetXYZ(0,dOffset,0);  vector.RotateZ(dBetaRad);
 728    vector.RotateZ(-dRotAngleRad);
 729
 730    gMC->Gspos("RICH",4,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1003], "ONLY");
 731    Chamber(3).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 732 // Chamber 4
 733                    AliMatrix(idrotm[1004],      90,  360-dBeta-dRotAngle , 108.2         , 90-dBeta-dRotAngle  , 18.2          ,  90-dBeta     );
 734    pRotMatrix=new TRotMatrix("rot997","rot997", 90,  360-dBeta-dRotAngle , 108.2         , 90-dBeta-dRotAngle  , 18.2          ,  90-dBeta     );
 735
 736    vector.SetXYZ(0,dOffset,0);  vector.RotateZ(-dBetaRad); vector.RotateX(-dAlphaRad);
 737    vector.RotateZ(-dRotAngleRad);
 738
 739    gMC->Gspos("RICH",5,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1004], "ONLY");
 740    Chamber(4).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 741 // Chamber 5
 742                    AliMatrix(idrotm[1005],      90, -dRotAngle           , 90+dAlpha     , 90-dRotAngle        , dAlpha        ,  90           );
 743    pRotMatrix=new TRotMatrix("rot998","rot998", 90, -dRotAngle           , 90+dAlpha     , 90-dRotAngle        , dAlpha        ,  90           );
 744
 745    vector.SetXYZ(0,dOffset,0); vector.RotateX(-dAlphaRad);
 746    vector.RotateZ(-dRotAngleRad);
 747
 748    gMC->Gspos("RICH",6,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1005], "ONLY");
 749    Chamber(5).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 750 // Chamber 6
 751                    AliMatrix(idrotm[1006],      90,  dBeta-dRotAngle     , 108.2         , 90+dBeta-dRotAngle  , 18.2          ,  90+dBeta     );
 752    pRotMatrix=new TRotMatrix("rot999","rot999", 90,  dBeta-dRotAngle     , 108.2         , 90+dBeta-dRotAngle  , 18.2          ,  90+dBeta     );
 753
 754    vector.SetXYZ(0,dOffset,0);  vector.RotateZ(dBetaRad); vector.RotateX(-dAlphaRad);
 755    vector.RotateZ(-dRotAngleRad);
 756
 757    gMC->Gspos("RICH",7,"ALIC",vector.X(),vector.Y(),vector.Z(),idrotm[1006], "ONLY");
 758    Chamber(6).SetChamberTransform(vector.X(),vector.Y(),vector.Z(),pRotMatrix);
 759
 760 }//void AliRICHv3::CreateGeometry()
 761
 762
 763
 764
 765 void AliRICHv3::Init()
 766 {
 767 // Makes nothing for a while
 768    if(IsDebugStart()) cout<<ClassName()<<"::Init()>\n";
 769
 770 }
 771
 772
 773 void AliRICHv3::BuildGeometry()
 774 {
 775 // Provides geometry structure for event display (ROOT TNode tree)
 776
 777    if(IsDebugStart()) cout<<ClassName()<<"::BuildGeometry()>\n";
 778
 779     TNode *node, *subnode, *top;
 780
 781     const int kColorRICH = kRed;
 782     //
 783     top=gAlice->GetGeometry()->GetNode("alice");
 784
 785     AliRICH *pRICH = (AliRICH *) gAlice->GetDetector("RICH");
 786     AliRICHChamber*       iChamber;
 787     AliRICHGeometry*  geometry;
 788
 789     iChamber = &(pRICH->Chamber(0));
 790     AliRICHSegmentationV1* segmentation=(AliRICHSegmentationV1*) iChamber->GetSegmentationModel(0);
 791     geometry=iChamber->GetGeometryModel();
 792
 793     new TBRIK("S_RICH","S_RICH","void",71.09999,11.5,73.15);
 794
 795     Float_t padplane_width = segmentation->GetPadPlaneWidth();
 796     Float_t padplane_length = segmentation->GetPadPlaneLength();
 797
 798
 799     new TBRIK("PHOTO","PHOTO","void", padplane_width/2,.1,padplane_length/2);
 800
 801 // Chamber 0
 802     top->cd();
 803     node = new TNode("RICH1","RICH1","S_RICH",Chamber(0).GetX(),Chamber(0).GetY(),Chamber(0).GetZ(),"rot993");
 804     node->SetLineColor(kColorRICH);
 805     node->cd();
 806     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 807     subnode->SetLineColor(kGreen);
 808     fNodes->Add(subnode);
 809     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 810     subnode->SetLineColor(kGreen);
 811     fNodes->Add(subnode);
 812     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 813     subnode->SetLineColor(kGreen);
 814     fNodes->Add(subnode);
 815     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 816     subnode->SetLineColor(kGreen);
 817     fNodes->Add(subnode);
 818     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 819     subnode->SetLineColor(kGreen);
 820     fNodes->Add(subnode);
 821     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 822     subnode->SetLineColor(kGreen);
 823     fNodes->Add(subnode);
 824     fNodes->Add(node);
 825
 826 // Chamber 1
 827     top->cd();
 828     node = new TNode("RICH2","RICH2","S_RICH",Chamber(1).GetX(),Chamber(1).GetY(),Chamber(1).GetZ(),"rot994");
 829     node->SetLineColor(kColorRICH);
 830     node->cd();
 831     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 832     subnode->SetLineColor(kGreen);
 833     fNodes->Add(subnode);
 834     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 835     subnode->SetLineColor(kGreen);
 836     fNodes->Add(subnode);
 837     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 838     subnode->SetLineColor(kGreen);
 839     fNodes->Add(subnode);
 840     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 841     subnode->SetLineColor(kGreen);
 842     fNodes->Add(subnode);
 843     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 844     subnode->SetLineColor(kGreen);
 845     fNodes->Add(subnode);
 846     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 847     subnode->SetLineColor(kGreen);
 848     fNodes->Add(subnode);
 849     fNodes->Add(node);
 850
 851 // Chamber 2
 852     top->cd();
 853     node = new TNode("RICH3","RICH3","S_RICH",Chamber(2).GetX(),Chamber(2).GetY(),Chamber(2).GetZ(),"rot995");
 854     node->SetLineColor(kColorRICH);
 855     node->cd();
 856     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 857     subnode->SetLineColor(kGreen);
 858     fNodes->Add(subnode);
 859     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 860     subnode->SetLineColor(kGreen);
 861     fNodes->Add(subnode);
 862     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 863     subnode->SetLineColor(kGreen);
 864     fNodes->Add(subnode);
 865     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 866     subnode->SetLineColor(kGreen);
 867     fNodes->Add(subnode);
 868     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 869     subnode->SetLineColor(kGreen);
 870     fNodes->Add(subnode);
 871     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 872     subnode->SetLineColor(kGreen);
 873     fNodes->Add(subnode);
 874     fNodes->Add(node);
 875
 876 // Chamber 3
 877     top->cd();
 878     node = new TNode("RICH4","RICH4","S_RICH",Chamber(3).GetX(),Chamber(3).GetY(),Chamber(3).GetZ(),"rot996");
 879     node->SetLineColor(kColorRICH);
 880     node->cd();
 881     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 882     subnode->SetLineColor(kGreen);
 883     fNodes->Add(subnode);
 884     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 885     subnode->SetLineColor(kGreen);
 886     fNodes->Add(subnode);
 887     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 888     subnode->SetLineColor(kGreen);
 889     fNodes->Add(subnode);
 890     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 891     subnode->SetLineColor(kGreen);
 892     fNodes->Add(subnode);
 893     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 894     subnode->SetLineColor(kGreen);
 895     fNodes->Add(subnode);
 896     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 897     subnode->SetLineColor(kGreen);
 898     fNodes->Add(subnode);
 899     fNodes->Add(node);
 900
 901 // Chamber 4
 902     top->cd();
 903     node = new TNode("RICH5","RICH5","S_RICH",Chamber(4).GetX(),Chamber(4).GetY(),Chamber(4).GetZ(),"rot997");
 904     node->SetLineColor(kColorRICH);
 905     node->cd();
 906     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 907     subnode->SetLineColor(kGreen);
 908     fNodes->Add(subnode);
 909     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 910     subnode->SetLineColor(kGreen);
 911     fNodes->Add(subnode);
 912     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 913     subnode->SetLineColor(kGreen);
 914     fNodes->Add(subnode);
 915     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 916     subnode->SetLineColor(kGreen);
 917     fNodes->Add(subnode);
 918     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 919     subnode->SetLineColor(kGreen);
 920     fNodes->Add(subnode);
 921     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 922     subnode->SetLineColor(kGreen);
 923     fNodes->Add(subnode);
 924     fNodes->Add(node);
 925
 926 // Chamber 5
 927     top->cd();
 928     node = new TNode("RICH6","RICH6","S_RICH",Chamber(5).GetX(),Chamber(5).GetY(),Chamber(5).GetZ(),"rot998");
 929     node->SetLineColor(kColorRICH);
 930     fNodes->Add(node);node->cd();
 931     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 932     subnode->SetLineColor(kGreen);
 933     fNodes->Add(subnode);
 934     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 935     subnode->SetLineColor(kGreen);
 936     fNodes->Add(subnode);
 937     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 938     subnode->SetLineColor(kGreen);
 939     fNodes->Add(subnode);
 940     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 941     subnode->SetLineColor(kGreen);
 942     fNodes->Add(subnode);
 943     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 944     subnode->SetLineColor(kGreen);
 945     fNodes->Add(subnode);
 946     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 947     subnode->SetLineColor(kGreen);
 948     fNodes->Add(subnode);
 949
 950 // Chamber 6
 951     top->cd();
 952     node = new TNode("RICH7","RICH7","S_RICH",Chamber(6).GetX(),Chamber(6).GetY(),Chamber(6).GetZ(),"rot999");
 953     node->SetLineColor(kColorRICH);
 954     node->cd();
 955     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 956     subnode->SetLineColor(kGreen);
 957     fNodes->Add(subnode);
 958     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,padplane_length/2 + segmentation->DeadZone()/2,"");
 959     subnode->SetLineColor(kGreen);
 960     fNodes->Add(subnode);
 961     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,padplane_length/2 + segmentation->DeadZone()/2,"");
 962     subnode->SetLineColor(kGreen);
 963     fNodes->Add(subnode);
 964     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",padplane_width + segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 965     subnode->SetLineColor(kGreen);
 966     fNodes->Add(subnode);
 967     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",0,5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 968     subnode->SetLineColor(kGreen);
 969     fNodes->Add(subnode);
 970     subnode = new TNode("PHOTO1","PHOTO1","PHOTO",-padplane_width - segmentation->DeadZone(),5,-padplane_length/2 - segmentation->DeadZone()/2,"");
 971     subnode->SetLineColor(kGreen);
 972     fNodes->Add(subnode);
 973     fNodes->Add(node);
 974
 975 }//AliRICHv3::BuildGeometry()
 976
 977 void AliRICHv3::StepManager()
 978 {
 979 // The active Step Manager is realised currently in AliRICHv3 for debug
 980 // leaving StepManager in AliRICH intact. To be removed in future.
 981
 982     Int_t          copy, id;
 983     static Int_t   idvol;
 984     static Int_t   vol[2];
 985     Int_t          ipart;
 986     static Float_t hits[22];
 987     static Float_t ckovData[19];
 988     TLorentzVector position;
 989     TLorentzVector momentum;
 990     Float_t        pos[3];
 991     Float_t        mom[4];
 992     Float_t        localPos[3];
 993     Float_t        localMom[4];
 994     Float_t        localTheta,localPhi;
 995     Float_t        theta,phi;
 996     Float_t        destep, step;
 997     Float_t        ranf[2];
 998     Int_t          nPads;
 999     Float_t        coscerenkov;
1000     static Float_t eloss, xhit, yhit, tlength;
1001     const  Float_t kBig=1.e10;
1002
1003     TClonesArray &lhits = *fHits;
1004     TParticle *current = (TParticle*)(*gAlice->Particles())[gAlice->CurrentTrack()];
1005
1006  //if (current->Energy()>1)
1007    //{
1008
1009     // Only gas gap inside chamber
1010     // Tag chambers and record hits when track enters
1011
1012     idvol=-1;
1013     id=gMC->CurrentVolID(copy);
1014     Float_t cherenkovLoss=0;
1015     //gAlice->KeepTrack(gAlice->CurrentTrack());
1016
1017     gMC->TrackPosition(position);
1018     pos[0]=position(0);
1019     pos[1]=position(1);
1020     pos[2]=position(2);
1021     //bzero((char *)ckovData,sizeof(ckovData)*19);
1022     ckovData[1] = pos[0];                 // X-position for hit
1023     ckovData[2] = pos[1];                 // Y-position for hit
1024     ckovData[3] = pos[2];                 // Z-position for hit
1025     ckovData[6] = 0;                      // dummy track length
1026     //ckovData[11] = gAlice->CurrentTrack();
1027
1028     //printf("\n+++++++++++\nTrack: %d\n++++++++++++\n",gAlice->CurrentTrack());
1029
1030     //AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH");
1031
1032     /********************Store production parameters for Cerenkov photons************************/
1033 //is it a Cerenkov photon?
1034     if (gMC->TrackPid() == 50000050) {
1035
1036       //if (gMC->VolId("GAP ")==gMC->CurrentVolID(copy))
1037         //{
1038           Float_t ckovEnergy = current->Energy();
1039           //energy interval for tracking
1040           if  (ckovEnergy > 5.6e-09 && ckovEnergy < 7.8e-09 )
1041             //if (ckovEnergy > 0)
1042             {
1043               if (gMC->IsTrackEntering()){        //is track entering?
1044                 //printf("Track entered (1)\n");
1045                 if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
1046                   {                                                          //is it in freo?
1047                     if (gMC->IsNewTrack()){                          //is it the first step?
1048                       //printf("I'm in!\n");
1049                       Int_t mother = current->GetFirstMother();
1050
1051                       //printf("Second Mother:%d\n",current->GetSecondMother());
1052
1053                       ckovData[10] = mother;
1054                       ckovData[11] = gAlice->CurrentTrack();
1055                       ckovData[12] = 1;             //Media where photon was produced 1->Freon, 2->Quarz
1056                       //printf("Produced in FREO\n");
1057                       fCkovNumber++;
1058                       fFreonProd=1;
1059                       //printf("Index: %d\n",fCkovNumber);
1060                     }    //first step question
1061                   }        //freo question
1062
1063                 if (gMC->IsNewTrack()){                                  //is it first step?
1064                   if (gMC->VolId("QUAR")==gMC->CurrentVolID(copy))             //is it in quarz?
1065                     {
1066                       ckovData[12] = 2;
1067                       //printf("Produced in QUAR\n");
1068                     }    //quarz question
1069                 }        //first step question
1070
1071                 //printf("Before %d\n",fFreonProd);
1072               }   //track entering question
1073
1074               if (ckovData[12] == 1)                                        //was it produced in Freon?
1075                 //if (fFreonProd == 1)
1076                 {
1077                   if (gMC->IsTrackEntering()){                                     //is track entering?
1078                     //printf("Track entered (2)\n");
1079                     //printf("Current volume (should be META): %s\n",gMC->CurrentVolName());
1080                     //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("META"),gMC->CurrentVolID(copy));
1081                     if (gMC->VolId("META")==gMC->CurrentVolID(copy))                //is it in gap?
1082                       {
1083                         //printf("Got in META\n");
1084                         gMC->TrackMomentum(momentum);
1085                         mom[0]=momentum(0);
1086                         mom[1]=momentum(1);
1087                         mom[2]=momentum(2);
1088                         mom[3]=momentum(3);
1089                         // Z-position for hit
1090
1091
1092                         /**************** Photons lost in second grid have to be calculated by hand************/
1093
1094                         Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
1095                         Float_t t = (1. - .025 / cophi) * (1. - .05 /  cophi);
1096                         gMC->Rndm(ranf, 1);
1097                         //printf("grid calculation:%f\n",t);
1098                         if (ranf[0] > t) {
1099                           gMC->StopTrack();
1100                           ckovData[13] = 5;
1101                           AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1102                           //printf("Added One (1)!\n");
1103                           //printf("Lost one in grid\n");
1104                         }
1105                         /**********************************************************************************/
1106                       }    //gap
1107
1108                     //printf("Current volume (should be CSI) (1): %s\n",gMC->CurrentVolName());
1109                     //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("CSI "),gMC->CurrentVolID(copy));
1110                     if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy))             //is it in csi?
1111                       {
1112                         //printf("Got in CSI\n");
1113                         gMC->TrackMomentum(momentum);
1114                         mom[0]=momentum(0);
1115                         mom[1]=momentum(1);
1116                         mom[2]=momentum(2);
1117                         mom[3]=momentum(3);
1118
1119                         /********* Photons lost by Fresnel reflection have to be calculated by hand********/
1120                         /***********************Cerenkov phtons (always polarised)*************************/
1121
1122                         Float_t cophi = TMath::Cos(TMath::ATan2(mom[0], mom[1]));
1123                         Float_t t = Fresnel(ckovEnergy*1e9,cophi,1);
1124                         gMC->Rndm(ranf, 1);
1125                         if (ranf[0] < t) {
1126                           gMC->StopTrack();
1127                           ckovData[13] = 6;
1128                           AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1129                           //printf("Added One (2)!\n");
1130                           //printf("Lost by Fresnel\n");
1131                         }
1132                         /**********************************************************************************/
1133                       }
1134                   } //track entering?
1135
1136
1137                   /********************Evaluation of losses************************/
1138                   /******************still in the old fashion**********************/
1139
1140                   TArrayI procs;
1141                   Int_t i1 = gMC->StepProcesses(procs);            //number of physics mechanisms acting on the particle
1142                   for (Int_t i = 0; i < i1; ++i) {
1143                     //        Reflection loss
1144                     if (procs[i] == kPLightReflection) {        //was it reflected
1145                       ckovData[13]=10;
1146                       if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
1147                         ckovData[13]=1;
1148                       if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR"))
1149                         ckovData[13]=2;
1150                       //gMC->StopTrack();
1151                       //AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1152                     } //reflection question
1153
1154                     //        Absorption loss
1155                     else if (procs[i] == kPLightAbsorption) {              //was it absorbed?
1156                       //printf("Got in absorption\n");
1157                       ckovData[13]=20;
1158                       if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
1159                         ckovData[13]=11;
1160                       if (gMC->CurrentVolID(copy) == gMC->VolId("QUAR"))
1161                         ckovData[13]=12;
1162                       if (gMC->CurrentVolID(copy) == gMC->VolId("META"))
1163                         ckovData[13]=13;
1164                       if (gMC->CurrentVolID(copy) == gMC->VolId("GAP "))
1165                         ckovData[13]=13;
1166
1167                       if (gMC->CurrentVolID(copy) == gMC->VolId("SRIC"))
1168                         ckovData[13]=15;
1169
1170                       //        CsI inefficiency
1171                       if (gMC->CurrentVolID(copy) == gMC->VolId("CSI ")) {
1172                         ckovData[13]=16;
1173                       }
1174                       gMC->StopTrack();
1175                       AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1176                       //printf("Added One (3)!\n");
1177                       //printf("Added cerenkov %d\n",fCkovNumber);
1178                     } //absorption question
1179
1180
1181                     //        Photon goes out of tracking scope
1182                     else if (procs[i] == kPStop) {                 //is it below energy treshold?
1183                       ckovData[13]=21;
1184                       gMC->StopTrack();
1185                       AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1186                       //printf("Added One (4)!\n");
1187                     }   // energy treshold question
1188                   }  //number of mechanisms cycle
1189                   /**********************End of evaluation************************/
1190                 } //freon production question
1191             } //energy interval question
1192         //}//inside the proximity gap question
1193     } //cerenkov photon question
1194
1195     /**************************************End of Production Parameters Storing*********************/
1196
1197
1198     /*******************************Treat photons that hit the CsI (Ckovs and Feedbacks)************/
1199
1200     if (gMC->TrackPid() == 50000050 || gMC->TrackPid() == 50000051) {
1201       //printf("Cerenkov\n");
1202
1203       //if (gMC->TrackPid() == 50000051)
1204         //printf("Tracking a feedback\n");
1205
1206       if (gMC->VolId("CSI ")==gMC->CurrentVolID(copy))
1207         {
1208           //printf("Current volume (should be CSI) (2): %s\n",gMC->CurrentVolName());
1209           //printf("VolId: %d, CurrentVolID: %d\n",gMC->VolId("CSI "),gMC->CurrentVolID(copy));
1210           //printf("Got in CSI\n");
1211           //printf("Tracking a %d\n",gMC->TrackPid());
1212           if (gMC->Edep() > 0.){
1213                 gMC->TrackPosition(position);
1214                 gMC->TrackMomentum(momentum);
1215                 pos[0]=position(0);
1216                 pos[1]=position(1);
1217                 pos[2]=position(2);
1218                 mom[0]=momentum(0);
1219                 mom[1]=momentum(1);
1220                 mom[2]=momentum(2);
1221                 mom[3]=momentum(3);
1222                 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
1223                 Double_t rt = TMath::Sqrt(tc);
1224                 theta   = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
1225                 phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1226                 gMC->Gmtod(pos,localPos,1);
1227                 gMC->Gmtod(mom,localMom,2);
1228
1229                 gMC->CurrentVolOffID(2,copy);
1230                 vol[0]=copy;
1231                 idvol=vol[0]-1;
1232
1233                 //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
1234                         //->Sector(localPos[0], localPos[2]);
1235                 //printf("Sector:%d\n",sector);
1236
1237                 /*if (gMC->TrackPid() == 50000051){
1238                   fFeedbacks++;
1239                   printf("Feedbacks:%d\n",fFeedbacks);
1240                 }*/
1241
1242         //PH            ((AliRICHChamber*) (*fChambers)[idvol])
1243                 ((AliRICHChamber*)fChambers->At(idvol))
1244                     ->SigGenInit(localPos[0], localPos[2], localPos[1]);
1245                 if(idvol<kNCH) {
1246                     ckovData[0] = gMC->TrackPid();        // particle type
1247                     ckovData[1] = pos[0];                 // X-position for hit
1248                     ckovData[2] = pos[1];                 // Y-position for hit
1249                     ckovData[3] = pos[2];                 // Z-position for hit
1250                     ckovData[4] = theta;                      // theta angle of incidence
1251                     ckovData[5] = phi;                      // phi angle of incidence
1252                     ckovData[8] = (Float_t) fNSDigits;      // first sdigit
1253                     ckovData[9] = -1;                       // last pad hit
1254                     ckovData[13] = 4;                       // photon was detected
1255                     ckovData[14] = mom[0];
1256                     ckovData[15] = mom[1];
1257                     ckovData[16] = mom[2];
1258
1259                     destep = gMC->Edep();
1260                     gMC->SetMaxStep(kBig);
1261                     cherenkovLoss  += destep;
1262                     ckovData[7]=cherenkovLoss;
1263
1264                     nPads = Hits2SDigits(localPos[0],localPos[2],cherenkovLoss,idvol,kCerenkov);
1265
1266                     if (fNSDigits > (Int_t)ckovData[8]) {
1267                         ckovData[8]= ckovData[8]+1;
1268                         ckovData[9]= (Float_t) fNSDigits;
1269                     }
1270
1271                     //printf("Cerenkov loss: %f\n", cherenkovLoss);
1272
1273                     ckovData[17] = nPads;
1274                     //printf("nPads:%d",nPads);
1275
1276                     //TClonesArray *Hits = RICH->Hits();
1277                     AliRICHHit *mipHit =  (AliRICHHit*) (fHits->UncheckedAt(0));
1278                     if (mipHit)
1279                       {
1280                         mom[0] = current->Px();
1281                         mom[1] = current->Py();
1282                         mom[2] = current->Pz();
1283                         Float_t mipPx = mipHit->MomX();
1284                         Float_t mipPy = mipHit->MomY();
1285                         Float_t mipPz = mipHit->MomZ();
1286
1287                         Float_t r = mom[0]*mom[0] + mom[1]*mom[1] + mom[2]*mom[2];
1288                         Float_t rt = TMath::Sqrt(r);
1289                         Float_t mipR = mipPx*mipPx + mipPy*mipPy + mipPz*mipPz;
1290                         Float_t mipRt = TMath::Sqrt(mipR);
1291                         if ((rt*mipRt) > 0)
1292                           {
1293                             coscerenkov = (mom[0]*mipPx + mom[1]*mipPy + mom[2]*mipPz)/(rt*mipRt);
1294                           }
1295                         else
1296                           {
1297                             coscerenkov = 0;
1298                           }
1299                         Float_t cherenkov = TMath::ACos(coscerenkov);
1300                         ckovData[18]=cherenkov;
1301                       }
1302                     //if (sector != -1)
1303                     //{
1304                     AddHit(gAlice->CurrentTrack(),vol,ckovData);
1305                     AddCerenkov(gAlice->CurrentTrack(),vol,ckovData);
1306                     //printf("Added One (5)!\n");
1307                     //}
1308                 }
1309             }
1310         }
1311     }
1312
1313     /***********************************************End of photon hits*********************************************/
1314
1315
1316     /**********************************************Charged particles treatment*************************************/
1317
1318     else if (gMC->TrackCharge())
1319     //else if (1 == 1)
1320       {
1321 //If MIP
1322         /*if (gMC->IsTrackEntering())
1323           {
1324             hits[13]=20;//is track entering?
1325           }*/
1326         if (gMC->VolId("FRE1")==gMC->CurrentVolID(copy) || gMC->VolId("FRE2")==gMC->CurrentVolID(copy))
1327           {
1328             gMC->TrackMomentum(momentum);
1329             mom[0]=momentum(0);
1330             mom[1]=momentum(1);
1331             mom[2]=momentum(2);
1332             mom[3]=momentum(3);
1333             hits [19] = mom[0];
1334             hits [20] = mom[1];
1335             hits [21] = mom[2];
1336             fFreonProd=1;
1337           }
1338
1339         if (gMC->VolId("GAP ")== gMC->CurrentVolID(copy)) {
1340 // Get current particle id (ipart), track position (pos)  and momentum (mom)
1341
1342             gMC->CurrentVolOffID(3,copy);
1343             vol[0]=copy;
1344             idvol=vol[0]-1;
1345
1346             //Int_t sector=((AliRICHChamber*) (*fChambers)[idvol])
1347                         //->Sector(localPos[0], localPos[2]);
1348             //printf("Sector:%d\n",sector);
1349
1350             gMC->TrackPosition(position);
1351             gMC->TrackMomentum(momentum);
1352             pos[0]=position(0);
1353             pos[1]=position(1);
1354             pos[2]=position(2);
1355             mom[0]=momentum(0);
1356             mom[1]=momentum(1);
1357             mom[2]=momentum(2);
1358             mom[3]=momentum(3);
1359             gMC->Gmtod(pos,localPos,1);
1360             gMC->Gmtod(mom,localMom,2);
1361
1362             ipart  = gMC->TrackPid();
1363             //
1364             // momentum loss and steplength in last step
1365             destep = gMC->Edep();
1366             step   = gMC->TrackStep();
1367
1368             //
1369             // record hits when track enters ...
1370             if( gMC->IsTrackEntering()) {
1371 //              gMC->SetMaxStep(fMaxStepGas);
1372                 Double_t tc = mom[0]*mom[0]+mom[1]*mom[1];
1373                 Double_t rt = TMath::Sqrt(tc);
1374                 theta   = Float_t(TMath::ATan2(rt,Double_t(mom[2])))*kRaddeg;
1375                 phi     = Float_t(TMath::ATan2(Double_t(mom[1]),Double_t(mom[0])))*kRaddeg;
1376
1377
1378                 Double_t localTc = localMom[0]*localMom[0]+localMom[2]*localMom[2];
1379                 Double_t localRt = TMath::Sqrt(localTc);
1380                 localTheta   = Float_t(TMath::ATan2(localRt,Double_t(localMom[1])))*kRaddeg;
1381                 localPhi     = Float_t(TMath::ATan2(Double_t(localMom[2]),Double_t(localMom[0])))*kRaddeg;
1382
1383                 hits[0] = Float_t(ipart);         // particle type
1384                 hits[1] = localPos[0];                 // X-position for hit
1385                 hits[2] = localPos[1];                 // Y-position for hit
1386                 hits[3] = localPos[2];                 // Z-position for hit
1387                 hits[4] = localTheta;                  // theta angle of incidence
1388                 hits[5] = localPhi;                    // phi angle of incidence
1389                 hits[8] = (Float_t) fNSDigits;    // first sdigit
1390                 hits[9] = -1;                     // last pad hit
1391                 hits[13] = fFreonProd;           // did id hit the freon?
1392                 hits[14] = mom[0];
1393                 hits[15] = mom[1];
1394                 hits[16] = mom[2];
1395                 hits[18] = 0;               // dummy cerenkov angle
1396
1397                 tlength = 0;
1398                 eloss   = 0;
1399                 fFreonProd = 0;
1400
1401                 Chamber(idvol).LocaltoGlobal(localPos,hits+1);
1402
1403
1404                 //To make chamber coordinates x-y had to pass localPos[0], localPos[2]
1405                 xhit    = localPos[0];
1406                 yhit    = localPos[2];
1407                 // Only if not trigger chamber
1408                 if(idvol<kNCH) {
1409                     //
1410                     //  Initialize hit position (cursor) in the segmentation model
1411           //PH              ((AliRICHChamber*) (*fChambers)[idvol])
1412                     ((AliRICHChamber*)fChambers->At(idvol))
1413                         ->SigGenInit(localPos[0], localPos[2], localPos[1]);
1414                 }
1415             }
1416
1417             //
1418             // Calculate the charge induced on a pad (disintegration) in case
1419             //
1420             // Mip left chamber ...
1421             if( gMC->IsTrackExiting() || gMC->IsTrackStop() || gMC->IsTrackDisappeared()){
1422                 gMC->SetMaxStep(kBig);
1423                 eloss   += destep;
1424                 tlength += step;
1425
1426
1427                 // Only if not trigger chamber
1428                 if(idvol<kNCH) {
1429                   if (eloss > 0)
1430                     {
1431                       if(gMC->TrackPid() == kNeutron)
1432                         printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
1433                       nPads = Hits2SDigits(xhit,yhit,eloss,idvol,kMip);
1434                       hits[17] = nPads;
1435                       //printf("nPads:%d",nPads);
1436                     }
1437                 }
1438
1439                 hits[6]=tlength;
1440                 hits[7]=eloss;
1441                 if (fNSDigits > (Int_t)hits[8]) {
1442                     hits[8]= hits[8]+1;
1443                     hits[9]= (Float_t) fNSDigits;
1444                 }
1445
1446                 //if(sector !=-1)
1447                 new(lhits[fNhits++]) AliRICHHit(fIshunt,gAlice->CurrentTrack(),vol,hits);
1448                 eloss = 0;
1449                 //
1450                 // Check additional signal generation conditions
1451                 // defined by the segmentation
1452                 // model (boundary crossing conditions)
1453             } else if
1454           //PH          (((AliRICHChamber*) (*fChambers)[idvol])
1455                 (((AliRICHChamber*)fChambers->At(idvol))
1456                  ->SigGenCond(localPos[0], localPos[2], localPos[1]))
1457             {
1458           //PH          ((AliRICHChamber*) (*fChambers)[idvol])
1459                 ((AliRICHChamber*)fChambers->At(idvol))
1460                     ->SigGenInit(localPos[0], localPos[2], localPos[1]);
1461                 if (eloss > 0)
1462                   {
1463                     if(gMC->TrackPid() == kNeutron)
1464                       printf("\n\n\n\n\n Neutron Making Pad Hit!!! \n\n\n\n");
1465                     nPads = Hits2SDigits(xhit,yhit,eloss,idvol,kMip);
1466                     hits[17] = nPads;
1467                     //printf("Npads:%d",NPads);
1468                   }
1469                 xhit     = localPos[0];
1470                 yhit     = localPos[2];
1471                 eloss    = destep;
1472                 tlength += step ;
1473                 //
1474                 // nothing special  happened, add up energy loss
1475             } else {
1476                 eloss   += destep;
1477                 tlength += step ;
1478             }
1479         }
1480       }
1481     /*************************************************End of MIP treatment**************************************/
1482    //}
1483 }// void AliRICHv3::StepManager()