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 1.20 2001/02/23 17:25:57 jbarbosa
19 Setters for wire sag effect and voltage values.
21 Revision 1.19 2001/02/13 20:10:22 jbarbosa
22 Removed call to SetNSec() (obsolete). Fixed bug in chamber initialisation (not all chambers were initialised).
24 Revision 1.18 2000/12/20 14:07:36 jbarbosa
25 Removed dependencies on TGeant3 (thanks to F. Carminati and I. Hrivnacova)
27 Revision 1.17 2000/12/18 17:44:29 jbarbosa
28 Took two lines out of output.
30 Revision 1.16 2000/10/03 21:44:09 morsch
31 Use AliSegmentation and AliHit abstract base classes.
33 Revision 1.15 2000/10/02 15:54:55 jbarbosa
34 New default version (15 mm freon).
36 Revision 1.14 2000/07/10 15:28:39 fca
37 Correction of the inheritance scheme
39 Revision 1.13 2000/06/30 16:38:15 dibari
42 Revision 1.12 2000/06/13 13:06:28 jbarbosa
43 Fixed compiling error for HP (multiple declaration)
45 Revision 1.11 2000/06/12 15:35:44 jbarbosa
48 Revision 1.10 2000/06/09 14:59:25 jbarbosa
49 New default version. No setters needed, no hits.
51 Revision 1.9 2000/05/31 08:19:38 jbarbosa
52 Fixed bug in StepManager
54 Revision 1.8 2000/05/26 17:30:08 jbarbosa
55 Cerenkov angle now stored within cerenkov data structure.
57 Revision 1.7 2000/05/18 10:31:36 jbarbosa
58 Fixed positioning of spacers inside freon.
59 Fixed positioning of proximity gap
61 Fixed cut on neutral particles in the StepManager.
63 Revision 1.6 2000/04/28 11:51:58 morsch
64 Dimensions of arrays hits and Ckov_data corrected.
66 Revision 1.5 2000/04/19 13:28:46 morsch
67 Major changes in geometry (parametrised), materials (updated) and
68 step manager (diagnostics) (JB, AM)
74 /////////////////////////////////////////////////////////////
75 // Manager and hits classes for set: RICH default version //
76 /////////////////////////////////////////////////////////////
82 #include "AliRICHv0.h"
83 #include "AliSegmentation.h"
84 #include "AliRICHResponse.h"
85 #include "AliRICHSegmentationV0.h"
86 #include "AliRICHResponseV0.h"
87 #include "AliRICHGeometry.h"
91 #include "AliCallf77.h"
97 //___________________________________________
98 AliRICHv0::AliRICHv0() : AliRICH()
101 // Default constructor
106 //___________________________________________
107 AliRICHv0::AliRICHv0(const char *name, const char *title)
108 : AliRICH(name,title)
112 // Default Segmentation, no hits
113 AliRICHSegmentationV0* segmentation = new AliRICHSegmentationV0;
115 // Segmentation parameters
116 segmentation->SetPadSize(0.84,0.80);
117 segmentation->SetDAnod(0.84/2);
119 // Geometry parameters
120 AliRICHGeometry* geometry = new AliRICHGeometry;
121 geometry->SetGapThickness(8);
122 geometry->SetProximityGapThickness(.4);
123 geometry->SetQuartzLength(131);
124 geometry->SetQuartzWidth(126.2);
125 geometry->SetQuartzThickness(.5);
126 geometry->SetOuterFreonLength(131);
127 geometry->SetOuterFreonWidth(40.3);
128 geometry->SetInnerFreonLength(131);
129 geometry->SetInnerFreonWidth(40.3);
130 geometry->SetFreonThickness(1.5);
132 // Response parameters
133 AliRICHResponseV0* response = new AliRICHResponseV0;
134 response->SetSigmaIntegration(5.);
135 response->SetChargeSlope(27.);
136 response->SetChargeSpread(0.18, 0.18);
137 response->SetMaxAdc(4096);
138 response->SetAlphaFeedback(0.036);
139 response->SetEIonisation(26.e-9);
140 response->SetSqrtKx3(0.77459667);
141 response->SetKx2(0.962);
142 response->SetKx4(0.379);
143 response->SetSqrtKy3(0.77459667);
144 response->SetKy2(0.962);
145 response->SetKy4(0.379);
146 response->SetPitch(0.25);
147 response->SetWireSag(0); // 1->On, 0->Off
148 response->SetVoltage(2150); // Should only be 2000, 2050, 2100 or 2150
150 // AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH");
156 fChambers = new TObjArray(kNCH);
157 for (i=0; i<kNCH; i++) {
159 (*fChambers)[i] = new AliRICHChamber();
163 for (i=0; i<kNCH; i++) {
164 SetGeometryModel(i,geometry);
165 SetSegmentationModel(i, segmentation);
166 SetResponseModel(i, response);
173 //___________________________________________
175 void AliRICHv0::Init()
178 printf("*********************************** RICH_INIT ***********************************\n");
180 printf("* AliRICHv0 Default version started *\n");
184 AliSegmentation* segmentation;
185 AliRICHGeometry* geometry;
186 AliRICHResponse* response;
190 // Initialize Tracking Chambers
192 for (Int_t i=0; i<kNCH; i++) {
194 ( (AliRICHChamber*) (*fChambers)[i])->Init(i);
198 // Set the chamber (sensitive region) GEANT identifier
200 ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);
201 ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);
202 ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);
203 ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);
204 ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);
205 ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);
206 ((AliRICHChamber*)(*fChambers)[6])->SetGid(7);
208 segmentation=Chamber(0).GetSegmentationModel(0);
209 geometry=Chamber(0).GetGeometryModel();
210 response=Chamber(0).GetResponseModel();
212 Float_t offset = 490 + 1.276 - geometry->GetGapThickness()/2; //distance from center of mother volume to methane
213 Float_t deltaphi = 19.5; //phi angle between center of chambers - z direction
214 Float_t deltatheta = 20; //theta angle between center of chambers - x direction
215 Float_t cosphi = TMath::Cos(deltaphi*TMath::Pi()/180);
216 Float_t sinphi = TMath::Sin(deltaphi*TMath::Pi()/180);
217 Float_t costheta = TMath::Cos(deltatheta*TMath::Pi()/180);
218 Float_t sintheta = TMath::Sin(deltatheta*TMath::Pi()/180);
220 Float_t pos1[3]={0. , offset*cosphi , offset*sinphi};
221 Float_t pos2[3]={offset*sintheta , offset*costheta , 0. };
222 Float_t pos3[3]={0. , offset , 0.};
223 Float_t pos4[3]={-offset*sintheta , offset*costheta , 0.};
224 Float_t pos5[3]={offset*sinphi , offset*costheta*cosphi, -offset*sinphi};
225 Float_t pos6[3]={0. , offset*cosphi , -offset*sinphi};
226 Float_t pos7[3]={ -offset*sinphi , offset*costheta*cosphi, -offset*sinphi};
228 Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90., 0. , 90. - deltaphi, 90. , deltaphi, -90. ));
229 Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90., -deltatheta , 90. , 90.- deltatheta , 0. , 0. ));
230 Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90., 0. , 90. , 90. , 0. , 0. ));
231 Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2],new TRotMatrix("rot996","rot996",90., deltatheta , 90. , 90 + deltatheta , 0. , 0. ));
232 Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90., 360. - deltatheta, 108.2 , 90.- deltatheta ,18.2 , 90 - deltatheta));
233 Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90., 0. , 90 + deltaphi , 90. , deltaphi, 90. ));
234 Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90., deltatheta , 108.2 , 90.+ deltatheta ,18.2 , 90 + deltatheta));
236 printf("* Pads : %3dx%3d *\n",segmentation->Npx(),segmentation->Npy());
237 printf("* Pad size : %5.2f x%5.2f mm2 *\n",segmentation->Dpx(),segmentation->Dpy());
238 printf("* Gap Thickness : %5.1f cm *\n",geometry->GetGapThickness());
239 printf("* Radiator Width : %5.1f cm *\n",geometry->GetQuartzWidth());
240 printf("* Radiator Length : %5.1f cm *\n",geometry->GetQuartzLength());
241 printf("* Freon Thickness : %5.1f cm *\n",geometry->GetFreonThickness());
242 printf("* Charge Slope : %5.1f ADC *\n",response->ChargeSlope());
243 printf("* Feedback Prob. : %5.2f %% *\n",response->AlphaFeedback()*100);
245 printf("*********************************************************************************\n");