1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
18 Revision 1.12 2000/06/13 13:06:28 jbarbosa
19 Fixed compiling error for HP (multiple declaration)
21 Revision 1.11 2000/06/12 15:35:44 jbarbosa
24 Revision 1.10 2000/06/09 14:59:25 jbarbosa
25 New default version. No setters needed, no hits.
27 Revision 1.9 2000/05/31 08:19:38 jbarbosa
28 Fixed bug in StepManager
30 Revision 1.8 2000/05/26 17:30:08 jbarbosa
31 Cerenkov angle now stored within cerenkov data structure.
33 Revision 1.7 2000/05/18 10:31:36 jbarbosa
34 Fixed positioning of spacers inside freon.
35 Fixed positioning of proximity gap
37 Fixed cut on neutral particles in the StepManager.
39 Revision 1.6 2000/04/28 11:51:58 morsch
40 Dimensions of arrays hits and Ckov_data corrected.
42 Revision 1.5 2000/04/19 13:28:46 morsch
43 Major changes in geometry (parametrised), materials (updated) and
44 step manager (diagnostics) (JB, AM)
50 /////////////////////////////////////////////////////////////
51 // Manager and hits classes for set: RICH default version //
52 /////////////////////////////////////////////////////////////
58 #include "AliRICHv0.h"
59 #include "AliRICHSegmentation.h"
60 #include "AliRICHResponse.h"
61 #include "AliRICHSegmentationV0.h"
62 #include "AliRICHResponseV0.h"
63 #include "AliRICHGeometry.h"
67 #include "AliCallf77.h"
74 //___________________________________________
75 AliRICHv0::AliRICHv0() : AliRICH()
78 // Default constructor
83 //___________________________________________
84 AliRICHv0::AliRICHv0(const char *name, const char *title)
89 // Default Segmentation, no hits
90 AliRICHSegmentationV0* segmentationV0 = new AliRICHSegmentationV0;
92 // Segmentation parameters
93 segmentationV0->SetPadSize(0.84,0.80);
94 segmentationV0->SetDAnod(0.84/2);
96 // Geometry parameters
97 AliRICHGeometry* geometry = new AliRICHGeometry;
98 geometry->SetGapThickness(8);
99 geometry->SetProximityGapThickness(.4);
100 geometry->SetQuartzLength(131);
101 geometry->SetQuartzWidth(126.2);
102 geometry->SetQuartzThickness(.5);
103 geometry->SetOuterFreonLength(131);
104 geometry->SetOuterFreonWidth(40.3);
105 geometry->SetInnerFreonLength(131);
106 geometry->SetInnerFreonWidth(40.3);
107 geometry->SetFreonThickness(1);
109 // Response parameters
110 AliRICHResponseV0* responseV0 = new AliRICHResponseV0;
111 responseV0->SetSigmaIntegration(5.);
112 responseV0->SetChargeSlope(40.);
113 responseV0->SetChargeSpread(0.18, 0.18);
114 responseV0->SetMaxAdc(1024);
115 responseV0->SetAlphaFeedback(0.05);
116 responseV0->SetEIonisation(26.e-9);
117 responseV0->SetSqrtKx3(0.77459667);
118 responseV0->SetKx2(0.962);
119 responseV0->SetKx4(0.379);
120 responseV0->SetSqrtKy3(0.77459667);
121 responseV0->SetKy2(0.962);
122 responseV0->SetKy4(0.379);
123 responseV0->SetPitch(0.25);
126 // AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH");
132 fChambers = new TObjArray(kNCH);
133 for (i=0; i<kNCH; i++) {
135 (*fChambers)[i] = new AliRICHChamber();
139 for (i=0; i<kNCH; i++) {
140 SetGeometryModel(i,geometry);
141 SetSegmentationModel(i, segmentationV0);
142 SetResponseModel(i, responseV0);
149 //___________________________________________
150 void AliRICHv0::CreateGeometry()
153 // Create the geometry for RICH version 1
155 // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it)
156 // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it)
157 // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it)
161 <img src="picts/AliRICHv1.gif">
166 <img src="picts/AliRICHv1Tree.gif">
170 AliRICH *pRICH = (AliRICH *) gAlice->GetDetector("RICH");
171 AliRICHSegmentation* segmentation;
172 AliRICHGeometry* geometry;
173 AliRICHChamber* iChamber;
175 iChamber = &(pRICH->Chamber(0));
176 segmentation=iChamber->GetSegmentationModel(0);
177 geometry=iChamber->GetGeometryModel();
180 distance = geometry->GetFreonThickness()/2 + geometry->GetQuartzThickness() + geometry->GetGapThickness();
181 geometry->SetRadiatorToPads(distance);
184 Int_t *idtmed = fIdtmed->GetArray()-999;
191 // --- Define the RICH detector
192 // External aluminium box
194 par[1] = 11.5; //Original Settings
199 gMC->Gsvolu("RICH", "BOX ", idtmed[1009], par, 3);
201 // Sensitive part of the whole RICH
203 par[1] = 11.5; //Original Settings
208 gMC->Gsvolu("SRIC", "BOX ", idtmed[1000], par, 3);
212 par[1] = .188; //Original Settings
217 gMC->Gsvolu("HONE", "BOX ", idtmed[1001], par, 3);
221 par[1] = .025; //Original Settings
226 gMC->Gsvolu("ALUM", "BOX ", idtmed[1009], par, 3);
229 par[0] = geometry->GetQuartzWidth()/2;
230 par[1] = geometry->GetQuartzThickness()/2;
231 par[2] = geometry->GetQuartzLength()/2;
233 par[1] = .25; //Original Settings
235 /*par[0] = geometry->GetQuartzWidth()/2;
236 par[1] = geometry->GetQuartzThickness()/2;
237 par[2] = geometry->GetQuartzLength()/2;*/
238 //printf("\n\n\n\n\n\n\n\\n\n\n\n Gap Thickness: %f %f %f\n\n\n\n\n\n\n\n\n\n\n\n\n\n",par[0],par[1],par[2]);
239 gMC->Gsvolu("QUAR", "BOX ", idtmed[1002], par, 3);
241 // Spacers (cylinders)
244 par[2] = geometry->GetFreonThickness()/2;
245 gMC->Gsvolu("SPAC", "TUBE", idtmed[1002], par, 3);
249 par[1] = .2; //Original Settings
254 gMC->Gsvolu("OQUA", "BOX ", idtmed[1007], par, 3);
256 // Frame of opaque quartz
257 par[0] = geometry->GetOuterFreonWidth()/2;
258 par[1] = geometry->GetFreonThickness()/2;
259 par[2] = geometry->GetOuterFreonLength()/2 + 1;
261 par[1] = .5; //Original Settings
266 gMC->Gsvolu("OQF1", "BOX ", idtmed[1007], par, 3);
268 par[0] = geometry->GetInnerFreonWidth()/2;
269 par[1] = geometry->GetFreonThickness()/2;
270 par[2] = geometry->GetInnerFreonLength()/2 + 1;
271 gMC->Gsvolu("OQF2", "BOX ", idtmed[1007], par, 3);
273 // Little bar of opaque quartz
275 par[1] = geometry->GetQuartzThickness()/2;
276 par[2] = geometry->GetInnerFreonLength()/2 - 2.4;
278 par[1] = .25; //Original Settings
283 gMC->Gsvolu("BARR", "BOX ", idtmed[1007], par, 3);
286 par[0] = geometry->GetOuterFreonWidth()/2;
287 par[1] = geometry->GetFreonThickness()/2;
288 par[2] = geometry->GetOuterFreonLength()/2;
290 par[1] = .5; //Original Settings
295 gMC->Gsvolu("FRE1", "BOX ", idtmed[1003], par, 3);
297 par[0] = geometry->GetInnerFreonWidth()/2;
298 par[1] = geometry->GetFreonThickness()/2;
299 par[2] = geometry->GetInnerFreonLength()/2;
300 gMC->Gsvolu("FRE2", "BOX ", idtmed[1003], par, 3);
304 par[1] = geometry->GetGapThickness()/2;
305 //printf("\n\n\n\n\n\n\n\\n\n\n\n Gap Thickness: %f\n\n\n\n\n\n\n\n\n\n\n\n\n\n",par[1]);
307 gMC->Gsvolu("META", "BOX ", idtmed[1004], par, 3);
311 par[1] = geometry->GetProximityGapThickness()/2;
312 //printf("\n\n\n\n\n\n\n\\n\n\n\n Gap Thickness: %f\n\n\n\n\n\n\n\n\n\n\n\n\n\n",par[1]);
314 gMC->Gsvolu("GAP ", "BOX ", idtmed[1008], par, 3);
320 gMC->Gsvolu("CSI ", "BOX ", idtmed[1005], par, 3);
326 gMC->Gsvolu("GRID", "TUBE", idtmed[1006], par, 3);
328 // --- Places the detectors defined with GSVOLU
329 // Place material inside RICH
330 gMC->Gspos("SRIC", 1, "RICH", 0., 0., 0., 0, "ONLY");
332 gMC->Gspos("ALUM", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 -.05 - .376 -.025, 0., 0, "ONLY");
333 gMC->Gspos("HONE", 1, "SRIC", 0., 1.276- geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 -.05 - .188, 0., 0, "ONLY");
334 gMC->Gspos("ALUM", 2, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .4 - .025, 0., 0, "ONLY");
335 gMC->Gspos("OQUA", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()- .2, 0., 0, "ONLY");
337 AliMatrix(idrotm[1019], 0., 0., 90., 0., 90., 90.);
339 Int_t nspacers = (Int_t)(TMath::Abs(geometry->GetInnerFreonLength()/14.4));
340 //printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n Spacers:%d\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n",nspacers);
342 //printf("Nspacers: %d", nspacers);
344 //for (i = 1; i <= 9; ++i) {
345 //zs = (5 - i) * 14.4; //Original settings
346 for (i = 0; i < nspacers; i++) {
347 zs = (TMath::Abs(nspacers/2) - i) * 14.4;
348 gMC->Gspos("SPAC", i, "FRE1", 6.7, 0., zs, idrotm[1019], "ONLY"); //Original settings
349 //gMC->Gspos("SPAC", i, "FRE1", zs, 0., 6.7, idrotm[1019], "ONLY");
351 //for (i = 10; i <= 18; ++i) {
352 //zs = (14 - i) * 14.4; //Original settings
353 for (i = nspacers; i < nspacers*2; ++i) {
354 zs = (nspacers + TMath::Abs(nspacers/2) - i) * 14.4;
355 gMC->Gspos("SPAC", i, "FRE1", -6.7, 0., zs, idrotm[1019], "ONLY"); //Original settings
356 //gMC->Gspos("SPAC", i, "FRE1", zs, 0., -6.7, idrotm[1019], "ONLY");
359 //for (i = 1; i <= 9; ++i) {
360 //zs = (5 - i) * 14.4; //Original settings
361 for (i = 0; i < nspacers; i++) {
362 zs = (TMath::Abs(nspacers/2) - i) * 14.4;
363 gMC->Gspos("SPAC", i, "FRE2", 6.7, 0., zs, idrotm[1019], "ONLY"); //Original settings
364 //gMC->Gspos("SPAC", i, "FRE2", zs, 0., 6.7, idrotm[1019], "ONLY");
366 //for (i = 10; i <= 18; ++i) {
367 //zs = (5 - i) * 14.4; //Original settings
368 for (i = nspacers; i < nspacers*2; ++i) {
369 zs = (nspacers + TMath::Abs(nspacers/2) - i) * 14.4;
370 gMC->Gspos("SPAC", i, "FRE2", -6.7, 0., zs, idrotm[1019], "ONLY"); //Original settings
371 //gMC->Gspos("SPAC", i, "FRE2", zs, 0., -6.7, idrotm[1019], "ONLY");
374 /*gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
375 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
376 gMC->Gspos("OQF1", 1, "SRIC", 31.3, -4.724, 41.3, 0, "ONLY");
377 gMC->Gspos("OQF2", 2, "SRIC", 0., -4.724, 0., 0, "ONLY");
378 gMC->Gspos("OQF1", 3, "SRIC", -31.3, -4.724, -41.3, 0, "ONLY");
379 gMC->Gspos("BARR", 1, "QUAR", -21.65, 0., 0., 0, "ONLY"); //Original settings
380 gMC->Gspos("BARR", 2, "QUAR", 21.65, 0., 0., 0, "ONLY"); //Original settings
381 gMC->Gspos("QUAR", 1, "SRIC", 0., -3.974, 0., 0, "ONLY");
382 gMC->Gspos("GAP ", 1, "META", 0., 4.8, 0., 0, "ONLY");
383 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
384 gMC->Gspos("CSI ", 1, "SRIC", 0., 6.526, 0., 0, "ONLY");*/
387 gMC->Gspos("FRE1", 1, "OQF1", 0., 0., 0., 0, "ONLY");
388 gMC->Gspos("FRE2", 1, "OQF2", 0., 0., 0., 0, "ONLY");
389 gMC->Gspos("OQF1", 1, "SRIC", geometry->GetOuterFreonWidth()/2 + geometry->GetInnerFreonWidth()/2, 1.276 - geometry->GetGapThickness()/2- geometry->GetQuartzThickness() -geometry->GetFreonThickness()/2, 0., 0, "ONLY"); //Original settings (31.3)
390 gMC->Gspos("OQF2", 2, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()/2, 0., 0, "ONLY"); //Original settings
391 gMC->Gspos("OQF1", 3, "SRIC", - (geometry->GetOuterFreonWidth()/2 + geometry->GetInnerFreonWidth()/2), 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness() - geometry->GetFreonThickness()/2, 0., 0, "ONLY"); //Original settings (-31.3)
392 gMC->Gspos("BARR", 1, "QUAR", -21.65, 0., 0., 0, "ONLY"); //Original settings
393 gMC->Gspos("BARR", 2, "QUAR", 21.65, 0., 0., 0, "ONLY"); //Original settings
394 gMC->Gspos("QUAR", 1, "SRIC", 0., 1.276 - geometry->GetGapThickness()/2 - geometry->GetQuartzThickness()/2, 0., 0, "ONLY");
395 gMC->Gspos("GAP ", 1, "META", 0., geometry->GetGapThickness()/2 - geometry->GetProximityGapThickness()/2 - 0.0001, 0., 0, "ONLY");
396 gMC->Gspos("META", 1, "SRIC", 0., 1.276, 0., 0, "ONLY");
397 gMC->Gspos("CSI ", 1, "SRIC", 0., 1.276 + geometry->GetGapThickness()/2 + .25, 0., 0, "ONLY");
399 //printf("Position of the gap: %f to %f\n", 1.276 + geometry->GetGapThickness()/2 - geometry->GetProximityGapThickness()/2 - .2, 1.276 + geometry->GetGapThickness()/2 - geometry->GetProximityGapThickness()/2 + .2);
401 // Place RICH inside ALICE apparatus
403 AliMatrix(idrotm[1000], 90., 0., 70.69, 90., 19.31, -90.);
404 AliMatrix(idrotm[1001], 90., -20., 90., 70., 0., 0.);
405 AliMatrix(idrotm[1002], 90., 0., 90., 90., 0., 0.);
406 AliMatrix(idrotm[1003], 90., 20., 90., 110., 0., 0.);
407 AliMatrix(idrotm[1004], 90., 340., 108.2, 70., 18.2, 70.);
408 AliMatrix(idrotm[1005], 90., 0., 109.31, 90., 19.31, 90.);
409 AliMatrix(idrotm[1006], 90., 20., 108.2, 110., 18.2, 110.);
411 gMC->Gspos("RICH", 1, "ALIC", 0., 471.9, 165.26, idrotm[1000], "ONLY");
412 gMC->Gspos("RICH", 2, "ALIC", 171., 470., 0., idrotm[1001], "ONLY");
413 gMC->Gspos("RICH", 3, "ALIC", 0., 500., 0., idrotm[1002], "ONLY");
414 gMC->Gspos("RICH", 4, "ALIC", -171., 470., 0., idrotm[1003], "ONLY");
415 gMC->Gspos("RICH", 5, "ALIC", 161.4, 443.4, -165.3, idrotm[1004], "ONLY");
416 gMC->Gspos("RICH", 6, "ALIC", 0., 471.9, -165.3, idrotm[1005], "ONLY");
417 gMC->Gspos("RICH", 7, "ALIC", -161.4, 443.4, -165.3, idrotm[1006], "ONLY");
422 //___________________________________________
423 void AliRICHv0::CreateMaterials()
426 // *** DEFINITION OF AVAILABLE RICH MATERIALS ***
427 // ORIGIN : NICK VAN EIJNDHOVEN
428 // Modified by: N. Colonna (INFN - BARI, Nicola.Colonna@ba.infn.it)
429 // R.A. Fini (INFN - BARI, Rosanna.Fini@ba.infn.it)
430 // R.A. Loconsole (Bari University, loco@riscom.ba.infn.it)
432 Int_t isxfld = gAlice->Field()->Integ();
433 Float_t sxmgmx = gAlice->Field()->Max();
436 /************************************Antonnelo's Values (14-vectors)*****************************************/
438 Float_t ppckov[14] = { 5.63e-9,5.77e-9,5.9e-9,6.05e-9,6.2e-9,6.36e-9,6.52e-9,
439 6.7e-9,6.88e-9,7.08e-9,7.3e-9,7.51e-9,7.74e-9,8e-9 };
440 Float_t rIndexQuarz[14] = { 1.528309,1.533333,
441 1.538243,1.544223,1.550568,1.55777,
442 1.565463,1.574765,1.584831,1.597027,
443 1.611858,1.6277,1.6472,1.6724 };
444 Float_t rIndexOpaqueQuarz[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
445 Float_t rIndexMethane[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
446 Float_t rIndexGrid[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
447 Float_t abscoFreon[14] = { 179.0987,179.0987,
448 179.0987,179.0987,179.0987,142.92,56.65,13.95,10.43,7.07,2.03,.5773,.33496,0. };
449 //Float_t abscoFreon[14] = { 1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,
450 // 1e-5,1e-5,1e-5,1e-5,1e-5 };
451 Float_t abscoQuarz[14] = { 64.035,39.98,35.665,31.262,27.527,22.815,21.04,17.52,
452 14.177,9.282,4.0925,1.149,.3627,.10857 };
453 Float_t abscoOpaqueQuarz[14] = { 1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,1e-5,
454 1e-5,1e-5,1e-5,1e-5,1e-5 };
455 Float_t abscoCsI[14] = { 1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,
456 1e-4,1e-4,1e-4,1e-4 };
457 Float_t abscoMethane[14] = { 1e6,1e6,1e6,1e6,1e6,1e6,1e6,1e6,1e6,1e6,1e6,
459 Float_t abscoGrid[14] = { 1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,1e-4,
460 1e-4,1e-4,1e-4,1e-4 };
461 Float_t efficAll[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
462 Float_t efficCsI[14] = { 6e-4,.005,.0075,.01125,.045,.117,.135,.16575,
463 .17425,.1785,.1836,.1904,.1938,.221 };
464 Float_t efficGrid[14] = { 1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1.,1. };
468 /**********************************End of Antonnelo's Values**********************************/
470 /**********************************Values from rich_media.f (31-vectors)**********************************/
473 //Photons energy intervals
477 ppckov[i] = (Float_t(i)*0.1+5.5)*1e-9;
478 //printf ("Energy intervals: %e\n",ppckov[i]);
482 //Refraction index for quarz
483 Float_t rIndexQuarz[26];
490 Float_t ene=ppckov[i]*1e9;
491 Float_t a=f1/(e1*e1 - ene*ene);
492 Float_t b=f2/(e2*e2 - ene*ene);
493 rIndexQuarz[i] = TMath::Sqrt(1. + a + b );
494 //printf ("rIndexQuarz: %e\n",rIndexQuarz[i]);
497 //Refraction index for opaque quarz, methane and grid
498 Float_t rIndexOpaqueQuarz[26];
499 Float_t rIndexMethane[26];
500 Float_t rIndexGrid[26];
503 rIndexOpaqueQuarz[i]=1;
504 rIndexMethane[i]=1.000444;
506 //printf ("rIndexOpaqueQuarz , etc: %e, %e, %e\n",rIndexOpaqueQuarz[i], rIndexMethane[i], rIndexGrid[i]=1);
509 //Absorption index for freon
510 Float_t abscoFreon[26] = {179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987, 179.0987,
511 179.0987, 142.9206, 56.64957, 25.58622, 13.95293, 12.03905, 10.42953, 8.804196,
512 7.069031, 4.461292, 2.028366, 1.293013, .577267, .40746, .334964, 0., 0., 0.};
514 //Absorption index for quarz
515 /*Float_t Qzt [21] = {.0,.0,.005,.04,.35,.647,.769,.808,.829,.844,.853,.858,.869,.887,.903,.902,.902,
516 .906,.907,.907,.907};
517 Float_t Wavl2[] = {150.,155.,160.0,165.0,170.0,175.0,180.0,185.0,190.0,195.0,200.0,205.0,210.0,
518 215.0,220.0,225.0,230.0,235.0,240.0,245.0,250.0};
519 Float_t abscoQuarz[31];
520 for (Int_t i=0;i<31;i++)
522 Float_t Xlam = 1237.79 / (ppckov[i]*1e9);
523 if (Xlam <= 160) abscoQuarz[i] = 0;
524 if (Xlam > 250) abscoQuarz[i] = 1;
527 for (Int_t j=0;j<21;j++)
529 //printf ("Passed\n");
530 if (Xlam > Wavl2[j] && Xlam < Wavl2[j+1])
532 Float_t Dabs = (Qzt[j+1] - Qzt[j])/(Wavl2[j+1] - Wavl2[j]);
533 Float_t Abso = Qzt[j] + Dabs*(Xlam - Wavl2[j]);
534 abscoQuarz[i] = -5.0/(TMath::Log(Abso));
538 printf ("abscoQuarz: %e abscoFreon: %e for energy: %e\n",abscoQuarz[i],abscoFreon[i],ppckov[i]);
541 /*Float_t abscoQuarz[31] = {49.64211, 48.41296, 47.46989, 46.50492, 45.13682, 44.47883, 43.1929 , 41.30922, 40.5943 ,
542 39.82956, 38.98623, 38.6247 , 38.43448, 37.41084, 36.22575, 33.74852, 30.73901, 24.25086,
543 17.94531, 11.88753, 5.99128, 3.83503, 2.36661, 1.53155, 1.30582, 1.08574, .8779708,
544 .675275, 0., 0., 0.};
546 for (Int_t i=0;i<31;i++)
548 abscoQuarz[i] = abscoQuarz[i]/10;
551 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,
552 19.266, 17.525, 15.878, 14.177, 11.719, 9.282, 6.62, 4.0925, 2.601, 1.149, .667, .3627,
553 .192, .1497, .10857};
555 //Absorption index for methane
556 Float_t abscoMethane[26];
559 abscoMethane[i]=AbsoCH4(ppckov[i]*1e9);
560 //printf("abscoMethane: %e for energy: %e\n", abscoMethane[i],ppckov[i]*1e9);
563 //Absorption index for opaque quarz, csi and grid, efficiency for all and grid
564 Float_t abscoOpaqueQuarz[26];
565 Float_t abscoCsI[26];
566 Float_t abscoGrid[26];
567 Float_t efficAll[26];
568 Float_t efficGrid[26];
571 abscoOpaqueQuarz[i]=1e-5;
576 //printf ("All must be 1: %e, %e, %e, %e, %e\n",abscoOpaqueQuarz[i],abscoCsI[i],abscoGrid[i],efficAll[i],efficGrid[i]);
581 Float_t efficCsI[26] = {0.000199999995, 0.000600000028, 0.000699999975, 0.00499999989, 0.00749999983, 0.010125,
582 0.0242999997, 0.0405000001, 0.0688500032, 0.105299994, 0.121500008, 0.141749993, 0.157949999,
583 0.162, 0.166050002, 0.167669997, 0.174299985, 0.176789999, 0.179279998, 0.182599992, 0.18592,
584 0.187579989, 0.189239994, 0.190899998, 0.207499996, 0.215799987};
588 //FRESNEL LOSS CORRECTION FOR PERPENDICULAR INCIDENCE AND
589 //UNPOLARIZED PHOTONS
593 efficCsI[i] = efficCsI[i]/(1.-Fresnel(ppckov[i]*1e9,1.,0));
594 //printf ("Fresnel result: %e for energy: %e\n",Fresnel(ppckov[i]*1e9,1.,0),ppckov[i]*1e9);
597 /*******************************************End of rich_media.f***************************************/
604 Float_t afre[2], agri, amet[2], aqua[2], ahon, zfre[2], zgri, zhon,
608 Int_t nlmatmet, nlmatqua;
609 Float_t wmatquao[2], rIndexFreon[26];
610 Float_t aquao[2], epsil, stmin, zquao[2];
612 Float_t radlal, densal, tmaxfd, deemax, stemax;
613 Float_t aal, zal, radlgri, densfre, radlhon, densgri, denshon,densqua, densmet, wmatfre[2], wmatmet[2], wmatqua[2];
615 Int_t *idtmed = fIdtmed->GetArray()-999;
617 TGeant3 *geant3 = (TGeant3*) gMC;
619 // --- Photon energy (GeV)
620 // --- Refraction indexes
621 for (i = 0; i < 26; ++i) {
622 rIndexFreon[i] = ppckov[i] * .0172 * 1e9 + 1.177;
623 //rIndexFreon[i] = 1;
624 //printf ("rIndexFreon: %e \n efficCsI: %e for energy: %e\n",rIndexFreon[i], efficCsI[i], ppckov[i]);
627 // --- Detection efficiencies (quantum efficiency for CsI)
628 // --- Define parameters for honeycomb.
629 // Used carbon of equivalent rad. lenght
636 // --- Parameters to include in GSMIXT, relative to Quarz (SiO2)
647 // --- Parameters to include in GSMIXT, relative to opaque Quarz (SiO2)
658 // --- Parameters to include in GSMIXT, relative to Freon (C6F14)
669 // --- Parameters to include in GSMIXT, relative to methane (CH4)
680 // --- Parameters to include in GSMIXT, relative to anode grid (Cu)
687 // --- Parameters to include in GSMATE related to aluminium sheet
694 AliMaterial(1, "Air $", 14.61, 7.3, .001205, 30420., 67500);
695 AliMaterial(6, "HON", ahon, zhon, denshon, radlhon, 0);
696 AliMaterial(16, "CSI", ahon, zhon, denshon, radlhon, 0);
697 AliMixture(20, "QUA", aqua, zqua, densqua, nlmatqua, wmatqua);
698 AliMixture(21, "QUAO", aquao, zquao, densquao, nlmatquao, wmatquao);
699 AliMixture(30, "FRE", afre, zfre, densfre, nlmatfre, wmatfre);
700 AliMixture(40, "MET", amet, zmet, densmet, nlmatmet, wmatmet);
701 AliMixture(41, "METG", amet, zmet, densmet, nlmatmet, wmatmet);
702 AliMaterial(11, "GRI", agri, zgri, densgri, radlgri, 0);
703 AliMaterial(50, "ALUM", aal, zal, densal, radlal, 0);
711 AliMedium(1, "DEFAULT MEDIUM AIR$", 1, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
712 AliMedium(2, "HONEYCOMB$", 6, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
713 AliMedium(3, "QUARZO$", 20, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
714 AliMedium(4, "FREON$", 30, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
715 AliMedium(5, "METANO$", 40, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
716 AliMedium(6, "CSI$", 16, 1, isxfld, sxmgmx,tmaxfd, stemax, deemax, epsil, stmin);
717 AliMedium(7, "GRIGLIA$", 11, 0, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
718 AliMedium(8, "QUARZOO$", 21, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
719 AliMedium(9, "GAP$", 41, 1, isxfld, sxmgmx,tmaxfd, .1, -deemax, epsil, -stmin);
720 AliMedium(10, "ALUMINUM$", 50, 1, isxfld, sxmgmx, tmaxfd, stemax, deemax, epsil, stmin);
723 geant3->Gsckov(idtmed[1000], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
724 geant3->Gsckov(idtmed[1001], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
725 geant3->Gsckov(idtmed[1002], 26, ppckov, abscoQuarz, efficAll,rIndexQuarz);
726 geant3->Gsckov(idtmed[1003], 26, ppckov, abscoFreon, efficAll,rIndexFreon);
727 geant3->Gsckov(idtmed[1004], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
728 geant3->Gsckov(idtmed[1005], 26, ppckov, abscoCsI, efficCsI, rIndexMethane);
729 geant3->Gsckov(idtmed[1006], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
730 geant3->Gsckov(idtmed[1007], 26, ppckov, abscoOpaqueQuarz, efficAll, rIndexOpaqueQuarz);
731 geant3->Gsckov(idtmed[1008], 26, ppckov, abscoMethane, efficAll, rIndexMethane);
732 geant3->Gsckov(idtmed[1009], 26, ppckov, abscoGrid, efficGrid, rIndexGrid);
735 //___________________________________________
737 Float_t AliRICHv0::Fresnel(Float_t ene,Float_t pdoti, Bool_t pola)
740 //ENE(EV), PDOTI=COS(INC.ANG.), PDOTR=COS(POL.PLANE ROT.ANG.)
742 Float_t en[36] = {5.0,5.1,5.2,5.3,5.4,5.5,5.6,5.7,5.8,5.9,6.0,6.1,6.2,
743 6.3,6.4,6.5,6.6,6.7,6.8,6.9,7.0,7.1,7.2,7.3,7.4,7.5,7.6,7.7,
744 7.8,7.9,8.0,8.1,8.2,8.3,8.4,8.5};
747 Float_t csin[36] = {2.14,2.21,2.33,2.48,2.76,2.97,2.99,2.59,2.81,3.05,
748 2.86,2.53,2.55,2.66,2.79,2.96,3.18,3.05,2.84,2.81,2.38,2.11,
749 2.01,2.13,2.39,2.73,3.08,3.15,2.95,2.73,2.56,2.41,2.12,1.95,
752 Float_t csik[36] = {0.,0.,0.,0.,0.,0.196,0.408,0.208,0.118,0.49,0.784,0.543,
753 0.424,0.404,0.371,0.514,0.922,1.102,1.139,1.376,1.461,1.253,0.878,
754 0.69,0.612,0.649,0.824,1.347,1.571,1.678,1.763,1.857,1.824,1.824,
757 Int_t j=Int_t(xe*10)-49;
758 Float_t cn=csin[j]+((csin[j+1]-csin[j])/0.1)*(xe-en[j]);
759 Float_t ck=csik[j]+((csik[j+1]-csik[j])/0.1)*(xe-en[j]);
761 //FORMULAE FROM HANDBOOK OF OPTICS, 33.23 OR
762 //W.R. HUNTER, J.O.S.A. 54 (1964),15 , J.O.S.A. 55(1965),1197
764 Float_t sinin=TMath::Sqrt(1-pdoti*pdoti);
765 Float_t tanin=sinin/pdoti;
767 Float_t c1=cn*cn-ck*ck-sinin*sinin;
768 Float_t c2=4*cn*cn*ck*ck;
769 Float_t aO=TMath::Sqrt(0.5*(TMath::Sqrt(c1*c1+c2)+c1));
770 Float_t b2=0.5*(TMath::Sqrt(c1*c1+c2)-c1);
772 Float_t rs=((aO-pdoti)*(aO-pdoti)+b2)/((aO+pdoti)*(aO+pdoti)+b2);
773 Float_t rp=rs*((aO-sinin*tanin)*(aO-sinin*tanin)+b2)/((aO+sinin*tanin)*(aO+sinin*tanin)+b2);
776 //CORRECTION FACTOR FOR SURFACE ROUGHNESS
777 //B.J. STAGG APPLIED OPTICS, 30(1991),4113
780 Float_t lamb=1240/ene;
783 Float_t rO=TMath::Exp(-(4*TMath::Pi()*pdoti*sigraf/lamb)*(4*TMath::Pi()*pdoti*sigraf/lamb));
787 Float_t pdotr=0.8; //DEGREE OF POLARIZATION : 1->P , -1->S
788 fresn=0.5*(rp*(1+pdotr)+rs*(1-pdotr));
797 //__________________________________________
799 Float_t AliRICHv0::AbsoCH4(Float_t x)
802 //KLOSCH,SCH4(9),WL(9),EM(9),ALENGTH(31)
803 Float_t sch4[9] = {.12,.16,.23,.38,.86,2.8,7.9,28.,80.}; //MB X 10^22
804 //Float_t wl[9] = {153.,152.,151.,150.,149.,148.,147.,146.,145};
805 Float_t em[9] = {8.1,8.158,8.212,8.267,8.322,8.378,8.435,8.493,8.55};
806 const Float_t kLosch=2.686763E19; // LOSCHMIDT NUMBER IN CM-3
807 const Float_t kIgas1=100, kIgas2=0, kOxy=10., kWater=5., kPressure=750.,kTemperature=283.;
808 Float_t pn=kPressure/760.;
809 Float_t tn=kTemperature/273.16;
812 // ------- METHANE CROSS SECTION -----------------
813 // ASTROPH. J. 214, L47 (1978)
819 if(x>=7.75 && x<=8.1)
821 Float_t c0=-1.655279e-1;
822 Float_t c1=6.307392e-2;
823 Float_t c2=-8.011441e-3;
824 Float_t c3=3.392126e-4;
825 sm=(c0+c1*x+c2*x*x+c3*x*x*x)*1.e-18;
831 while (x<=em[j] && x>=em[j+1])
834 Float_t a=(sch4[j+1]-sch4[j])/(em[j+1]-em[j]);
835 sm=(sch4[j]+a*(x-em[j]))*1e-22;
839 Float_t dm=(kIgas1/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
840 Float_t abslm=1./sm/dm;
842 // ------- ISOBUTHANE CROSS SECTION --------------
843 // i-C4H10 (ai) abs. length from curves in
844 // Lu-McDonald paper for BARI RICH workshop .
845 // -----------------------------------------------------------
854 if(x>=7.25 && x<7.375)
860 Float_t si = 1./(ai*kLosch*273.16/293.); // ISOB. CRO.SEC.IN CM2
861 Float_t di=(kIgas2/100.)*(1.-((kOxy+kWater)/1.e6))*kLosch*pn/tn;
866 // ---------------------------------------------------------
868 // transmission of O2
870 // y= path in cm, x=energy in eV
871 // so= cross section for UV absorption in cm2
872 // do= O2 molecular density in cm-3
873 // ---------------------------------------------------------
881 so=3.392709e-13 * TMath::Exp(2.864104 *x);
887 so=2.910039e-34 * TMath::Exp(10.3337*x);
894 Float_t a0=-73770.76;
896 Float_t a2=-11475.44;
898 Float_t a4=-86.07027;
900 so= a0+(a1*x)+(a2*x*x)+(a3*x*x*x)+(a4*x*x*x*x)+(a5*x*x*x*x*x);
904 Float_t dox=(kOxy/1e6)*kLosch*pn/tn;
909 // ---------------------------------------------------------
911 // transmission of H2O
913 // y= path in cm, x=energy in eV
914 // sw= cross section for UV absorption in cm2
915 // dw= H2O molecular density in cm-3
916 // ---------------------------------------------------------
921 Float_t b1=-15807.74;
923 Float_t b3=-285.4809;
928 Float_t sw= b0+(b1*x)+(b2*x*x)+(b3*x*x*x)+(b4*x*x*x*x);
930 Float_t dw=(kWater/1e6)*kLosch*pn/tn;
936 // ---------------------------------------------------------
938 Float_t alength=1./(1./abslm+1./absli+1./abslo+1./abslw);
945 //___________________________________________
947 void AliRICHv0::Init()
950 printf("*********************************** RICH_INIT ***********************************\n");
952 printf("* AliRICHv0 Default version started *\n");
956 AliRICHSegmentation* segmentation;
957 AliRICHGeometry* geometry;
958 AliRICHResponse* response;
962 // Initialize Tracking Chambers
964 for (Int_t i=1; i<kNCH; i++) {
966 ( (AliRICHChamber*) (*fChambers)[i])->Init();
970 // Set the chamber (sensitive region) GEANT identifier
972 ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);
973 ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);
974 ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);
975 ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);
976 ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);
977 ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);
978 ((AliRICHChamber*)(*fChambers)[6])->SetGid(7);
980 Float_t pos1[3]={0,471.8999,165.2599};
981 Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90,0,70.69,90,19.30999,-90));
983 Float_t pos2[3]={171,470,0};
984 Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90,-20,90,70,0,0));
986 Float_t pos3[3]={0,500,0};
987 Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90,0,90,90,0,0));
989 Float_t pos4[3]={-171,470,0};
990 Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2], new TRotMatrix("rot996","rot996",90,20,90,110,0,0));
992 Float_t pos5[3]={161.3999,443.3999,-165.3};
993 Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90,340,108.1999,70,18.2,70));
995 Float_t pos6[3]={0., 471.9, -165.3,};
996 Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90,0,109.3099,90,19.30999,90));
998 Float_t pos7[3]={-161.399,443.3999,-165.3};
999 Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90,20,108.1999,110,18.2,110));
1001 segmentation=Chamber(0).GetSegmentationModel(0);
1002 geometry=Chamber(0).GetGeometryModel();
1003 response=Chamber(0).GetResponseModel();
1006 printf("* Pads : %3dx%3d *\n",segmentation->Npx(),segmentation->Npy());
1007 printf("* Pad size : %5.2f x%5.2f mm2 *\n",segmentation->Dpx(),segmentation->Dpy());
1008 printf("* Gap Thickness : %5.1f cm *\n",geometry->GetGapThickness());
1009 printf("* Radiator Width : %5.1f cm *\n",geometry->GetQuartzWidth());
1010 printf("* Radiator Length : %5.1f cm *\n",geometry->GetQuartzLength());
1011 printf("* Freon Thickness : %5.1f cm *\n",geometry->GetFreonThickness());
1012 printf("* Charge Slope : %5.1f ADC *\n",response->ChargeSlope());
1013 printf("* Feedback Prob. : %5.2f %% *\n",response->AlphaFeedback()*100);
1015 printf("* Success! *\n");
1017 printf("*********************************************************************************\n");
1021 //___________________________________________
1022 void AliRICHv0::StepManager()
1024 //Dummy step manager
1028 //___________________________________________