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 1.21 2001/05/10 12:28:15 jbarbosa
19 Repositioned the RICH modules.
21 Revision 1.20 2001/02/23 17:25:57 jbarbosa
22 Setters for wire sag effect and voltage values.
24 Revision 1.19 2001/02/13 20:10:22 jbarbosa
25 Removed call to SetNSec() (obsolete). Fixed bug in chamber initialisation (not all chambers were initialised).
27 Revision 1.18 2000/12/20 14:07:36 jbarbosa
28 Removed dependencies on TGeant3 (thanks to F. Carminati and I. Hrivnacova)
30 Revision 1.17 2000/12/18 17:44:29 jbarbosa
31 Took two lines out of output.
33 Revision 1.16 2000/10/03 21:44:09 morsch
34 Use AliSegmentation and AliHit abstract base classes.
36 Revision 1.15 2000/10/02 15:54:55 jbarbosa
37 New default version (15 mm freon).
39 Revision 1.14 2000/07/10 15:28:39 fca
40 Correction of the inheritance scheme
42 Revision 1.13 2000/06/30 16:38:15 dibari
45 Revision 1.12 2000/06/13 13:06:28 jbarbosa
46 Fixed compiling error for HP (multiple declaration)
48 Revision 1.11 2000/06/12 15:35:44 jbarbosa
51 Revision 1.10 2000/06/09 14:59:25 jbarbosa
52 New default version. No setters needed, no hits.
54 Revision 1.9 2000/05/31 08:19:38 jbarbosa
55 Fixed bug in StepManager
57 Revision 1.8 2000/05/26 17:30:08 jbarbosa
58 Cerenkov angle now stored within cerenkov data structure.
60 Revision 1.7 2000/05/18 10:31:36 jbarbosa
61 Fixed positioning of spacers inside freon.
62 Fixed positioning of proximity gap
64 Fixed cut on neutral particles in the StepManager.
66 Revision 1.6 2000/04/28 11:51:58 morsch
67 Dimensions of arrays hits and Ckov_data corrected.
69 Revision 1.5 2000/04/19 13:28:46 morsch
70 Major changes in geometry (parametrised), materials (updated) and
71 step manager (diagnostics) (JB, AM)
77 /////////////////////////////////////////////////////////////
78 // Manager and hits classes for set: RICH default version //
79 /////////////////////////////////////////////////////////////
85 #include "AliRICHv0.h"
86 #include "AliSegmentation.h"
87 #include "AliRICHResponse.h"
88 #include "AliRICHSegmentationV0.h"
89 #include "AliRICHResponseV0.h"
90 #include "AliRICHGeometry.h"
94 #include "AliCallf77.h"
100 //___________________________________________
101 AliRICHv0::AliRICHv0() : AliRICH()
104 // Default constructor
109 //___________________________________________
110 AliRICHv0::AliRICHv0(const char *name, const char *title)
111 : AliRICH(name,title)
115 // Default Segmentation, no hits
116 AliRICHSegmentationV0* segmentation = new AliRICHSegmentationV0;
118 // Segmentation parameters
119 segmentation->SetPadSize(0.84,0.80);
120 segmentation->SetDAnod(0.84/2);
122 // Geometry parameters
123 AliRICHGeometry* geometry = new AliRICHGeometry;
124 geometry->SetGapThickness(8);
125 geometry->SetProximityGapThickness(.4);
126 geometry->SetQuartzLength(131);
127 geometry->SetQuartzWidth(126.2);
128 geometry->SetQuartzThickness(.5);
129 geometry->SetOuterFreonLength(131);
130 geometry->SetOuterFreonWidth(40.3);
131 geometry->SetInnerFreonLength(131);
132 geometry->SetInnerFreonWidth(40.3);
133 geometry->SetFreonThickness(1.5);
135 // Response parameters
136 AliRICHResponseV0* response = new AliRICHResponseV0;
137 response->SetSigmaIntegration(5.);
138 response->SetChargeSlope(27.);
139 response->SetChargeSpread(0.18, 0.18);
140 response->SetMaxAdc(4096);
141 response->SetAlphaFeedback(0.036);
142 response->SetEIonisation(26.e-9);
143 response->SetSqrtKx3(0.77459667);
144 response->SetKx2(0.962);
145 response->SetKx4(0.379);
146 response->SetSqrtKy3(0.77459667);
147 response->SetKy2(0.962);
148 response->SetKy4(0.379);
149 response->SetPitch(0.25);
150 response->SetWireSag(0); // 1->On, 0->Off
151 response->SetVoltage(2150); // Should only be 2000, 2050, 2100 or 2150
153 // AliRICH *RICH = (AliRICH *) gAlice->GetDetector("RICH");
159 fChambers = new TObjArray(kNCH);
160 for (i=0; i<kNCH; i++) {
162 (*fChambers)[i] = new AliRICHChamber();
166 for (i=0; i<kNCH; i++) {
167 SetGeometryModel(i,geometry);
168 SetSegmentationModel(i, segmentation);
169 SetResponseModel(i, response);
176 //___________________________________________
178 void AliRICHv0::Init()
182 printf("%s: *********************************** RICH_INIT ***********************************\n",ClassName());
183 printf("%s: * *\n",ClassName());
184 printf("%s: * AliRICHv0 Default version started *\n",ClassName());
185 printf("%s: * *\n",ClassName());
189 AliSegmentation* segmentation;
190 AliRICHGeometry* geometry;
191 AliRICHResponse* response;
195 // Initialize Tracking Chambers
197 for (Int_t i=0; i<kNCH; i++) {
199 ( (AliRICHChamber*) (*fChambers)[i])->Init(i);
203 // Set the chamber (sensitive region) GEANT identifier
205 ((AliRICHChamber*)(*fChambers)[0])->SetGid(1);
206 ((AliRICHChamber*)(*fChambers)[1])->SetGid(2);
207 ((AliRICHChamber*)(*fChambers)[2])->SetGid(3);
208 ((AliRICHChamber*)(*fChambers)[3])->SetGid(4);
209 ((AliRICHChamber*)(*fChambers)[4])->SetGid(5);
210 ((AliRICHChamber*)(*fChambers)[5])->SetGid(6);
211 ((AliRICHChamber*)(*fChambers)[6])->SetGid(7);
213 segmentation=Chamber(0).GetSegmentationModel(0);
214 geometry=Chamber(0).GetGeometryModel();
215 response=Chamber(0).GetResponseModel();
217 Float_t offset = 490 + 1.276 - geometry->GetGapThickness()/2; //distance from center of mother volume to methane
218 Float_t deltaphi = 19.5; //phi angle between center of chambers - z direction
219 Float_t deltatheta = 20; //theta angle between center of chambers - x direction
220 Float_t cosphi = TMath::Cos(deltaphi*TMath::Pi()/180);
221 Float_t sinphi = TMath::Sin(deltaphi*TMath::Pi()/180);
222 Float_t costheta = TMath::Cos(deltatheta*TMath::Pi()/180);
223 Float_t sintheta = TMath::Sin(deltatheta*TMath::Pi()/180);
225 Float_t pos1[3]={0. , offset*cosphi , offset*sinphi};
226 Float_t pos2[3]={offset*sintheta , offset*costheta , 0. };
227 Float_t pos3[3]={0. , offset , 0.};
228 Float_t pos4[3]={-offset*sintheta , offset*costheta , 0.};
229 Float_t pos5[3]={offset*sinphi , offset*costheta*cosphi, -offset*sinphi};
230 Float_t pos6[3]={0. , offset*cosphi , -offset*sinphi};
231 Float_t pos7[3]={ -offset*sinphi , offset*costheta*cosphi, -offset*sinphi};
233 Chamber(0).SetChamberTransform(pos1[0],pos1[1],pos1[2],new TRotMatrix("rot993","rot993",90., 0. , 90. - deltaphi, 90. , deltaphi, -90. ));
234 Chamber(1).SetChamberTransform(pos2[0],pos2[1],pos2[2],new TRotMatrix("rot994","rot994",90., -deltatheta , 90. , 90.- deltatheta , 0. , 0. ));
235 Chamber(2).SetChamberTransform(pos3[0],pos3[1],pos3[2],new TRotMatrix("rot995","rot995",90., 0. , 90. , 90. , 0. , 0. ));
236 Chamber(3).SetChamberTransform(pos4[0],pos4[1],pos4[2],new TRotMatrix("rot996","rot996",90., deltatheta , 90. , 90 + deltatheta , 0. , 0. ));
237 Chamber(4).SetChamberTransform(pos5[0],pos5[1],pos5[2],new TRotMatrix("rot997","rot997",90., 360. - deltatheta, 108.2 , 90.- deltatheta ,18.2 , 90 - deltatheta));
238 Chamber(5).SetChamberTransform(pos6[0],pos6[1],pos6[2],new TRotMatrix("rot998","rot998",90., 0. , 90 + deltaphi , 90. , deltaphi, 90. ));
239 Chamber(6).SetChamberTransform(pos7[0],pos7[1],pos7[2],new TRotMatrix("rot999","rot999",90., deltatheta , 108.2 , 90.+ deltatheta ,18.2 , 90 + deltatheta));
242 printf("%s: * Pads : %3dx%3d *\n",
243 ClassName(),segmentation->Npx(),segmentation->Npy());
244 printf("%s: * Pad size : %5.2f x%5.2f mm2 *\n",
245 ClassName(),segmentation->Dpx(),segmentation->Dpy());
246 printf("%s: * Gap Thickness : %5.1f cm *\n",
247 ClassName(),geometry->GetGapThickness());
248 printf("%s: * Radiator Width : %5.1f cm *\n",
249 ClassName(),geometry->GetQuartzWidth());
250 printf("%s: * Radiator Length : %5.1f cm *\n",
251 ClassName(),geometry->GetQuartzLength());
252 printf("%s: * Freon Thickness : %5.1f cm *\n",
253 ClassName(),geometry->GetFreonThickness());
254 printf("%s: * Charge Slope : %5.1f ADC *\n",
255 ClassName(),response->ChargeSlope());
256 printf("%s: * Feedback Prob. : %5.2f %% *\n",
257 ClassName(),response->AlphaFeedback()*100);
260 printf("%s: *********************************************************************************\n",