Line data Source code
1 : /**************************************************************************
2 : * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 : * *
4 : * Author: The ALICE Off-line Project. *
5 : * Contributors are mentioned in the code where appropriate. *
6 : * *
7 : * Permission to use, copy, modify and distribute this software and its *
8 : * documentation strictly for non-commercial purposes is hereby granted *
9 : * without fee, provided that the above copyright notice appears in all *
10 : * copies and that both the copyright notice and this permission notice *
11 : * appear in the supporting documentation. The authors make no claims *
12 : * about the suitability of this software for any purpose. It is *
13 : * provided "as is" without express or implied warranty. *
14 : **************************************************************************/
15 :
16 :
17 : /////////////////////////////////////////////////////////////////////
18 : // //
19 : // FIT detector full geometry version 1 //
20 : //
21 : //Begin Html
22 : /*
23 : <img src="gif/AliFITv1Class.gif">
24 : */
25 : //End Html
26 : // //
27 : // //
28 : //////////////////////////////////////////////////////////////////////
29 :
30 : #include <Riostream.h>
31 : #include <stdlib.h>
32 :
33 : #include "TGeoCompositeShape.h"
34 : #include "TGeoManager.h"
35 : #include "TGeoMatrix.h"
36 : #include "TGeoVolume.h"
37 : #include "TGeoTube.h"
38 : #include "TGeoBBox.h"
39 : #include "TGeoNode.h"
40 :
41 :
42 : #include <TGeoGlobalMagField.h>
43 : #include <TGraph.h>
44 : #include <TLorentzVector.h>
45 : #include <TMath.h>
46 : #include <TVirtualMC.h>
47 : #include <TString.h>
48 :
49 : #include "AliLog.h"
50 : #include "AliMagF.h"
51 : #include "AliRun.h"
52 :
53 : #include "AliFITHits.h"
54 : #include "AliFITv1.h"
55 :
56 : #include "AliMC.h"
57 : #include "AliCDBLocal.h"
58 : #include "AliCDBStorage.h"
59 : #include "AliCDBManager.h"
60 : #include "AliCDBEntry.h"
61 : #include "AliTrackReference.h"
62 :
63 2 : ClassImp(AliFITv1)
64 :
65 :
66 : //--------------------------------------------------------------------
67 0 : AliFITv1::AliFITv1(): AliFIT(),
68 0 : fIdSens1(0),
69 0 : fPMTeff(0x0)
70 :
71 0 : {
72 : //
73 : // Standart constructor for T0 Detector version 0
74 0 : }
75 : //--------------------------------------------------------------------
76 : AliFITv1::AliFITv1(const char *name, const char *title):
77 0 : AliFIT(name,title),
78 0 : fIdSens1(0),
79 0 : fPMTeff(0x0)
80 :
81 0 : {
82 : //
83 : // Standart constructor for T0 Detector version 0
84 : //
85 0 : fIshunt = 2;
86 0 : SetPMTeff();
87 0 : }
88 : //_____________________________________________________________________________
89 :
90 : AliFITv1::~AliFITv1()
91 0 : {
92 : // desctructor
93 0 : }
94 :
95 : //-------------------------------------------------------------------------
96 : void AliFITv1::CreateGeometry()
97 : {
98 : //
99 : // Create the geometry of FIT Detector version 1 full geometry
100 : //
101 : // begin Html
102 : //
103 :
104 0 : Int_t *idtmed = fIdtmed->GetArray();
105 : Float_t zdetC = 85; //center of mother volume
106 : Float_t zdetA = 335;
107 :
108 0 : Int_t idrotm[999];
109 : Double_t x,y,z;
110 0 : Float_t pstartC[3] = {6., 20 ,5};
111 0 : Float_t pstartA[3] = {2.55, 20 ,5};
112 : // Float_t pinstart[3] = {3.2,3.2,3.9};
113 0 : Float_t pinstart[3] = {3.2,3.2,4.};
114 0 : Float_t pmcp[3] = {3.19, 3.19, 2.8}; //MCP
115 0 : Float_t ptop[3] = {1.324, 1.324, 1.};//cherenkov radiator
116 0 : Float_t preg[3] = {1.324, 1.324, 0.05};//photcathode
117 :
118 : Float_t zV0A = 329.;
119 0 : Float_t pV0Amother[3] = {4.25, 41.25, 0.6};
120 0 : Float_t pV0A[3] = {4.3, 41.2, 0.5};
121 :
122 0 : AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
123 :
124 : //-------------------------------------------------------------------
125 : // T0 volume
126 : //-------------------------------------------------------------------
127 : //C side
128 :
129 :
130 0 : Float_t xc[20] = {9.6, 16, -9.6, -16, 9.6, 16,
131 : -9.6, -16, -9.6, -3.2, 3.2, 9.6,
132 : -9.6, -3.2, 3.2, 9.6, -3.2, 3.2,
133 : -3.2, 3.2};
134 :
135 0 : Float_t yc[20] = {3.2, 3.2, 3.2, 3.2, -3.2, -3.2,
136 : -3.2, -3.2, 9.6, 9.6, 9.6, 9.6,
137 : -9.6, -9.6, -9.6, -9.6, 16, 16,
138 : -16, -16};
139 :
140 : // A side
141 0 : Float_t xa[20] = {0.0, 0.0, 0.0, 0.0, 6.4,
142 : 6.4, 6.4, 6.4, 6.4,
143 : -6.4, -6.4, -6.4, -6.4, -6.4,
144 : 12.8, 12.8, 12.8,
145 : -12.8, -12.8, -12.8};
146 :
147 0 : Float_t ya[20] = { 6.4, 12.8, -6.4, -12.8,
148 : 0, 6.4, 12.8, -6.4,
149 : -12.8, 0., 6.4, 12.8,
150 : -6.4, -12.8, 0, 6.4,
151 : -6.4, 0.0, 6.4, -6.4};
152 :
153 0 : Float_t zc[20] = {2,0, 2,0, 2,0, 2,0, 2,2, 2,2, 2,2, 2,2, 0,0,0,0};
154 0 : Float_t za[20] = {2,0, 2,0, 2,2, 0,2, 0,2, 2,0, 2,0, 0,0, 0,0,0,0};
155 :
156 :
157 0 : TGeoVolumeAssembly * stlinA = new TGeoVolumeAssembly("0STL"); // A side mother
158 0 : TGeoVolumeAssembly * stlinC = new TGeoVolumeAssembly("0STR"); // C side mother
159 : //T0 interior
160 0 : TVirtualMC::GetMC()->Gsvolu("0INS","BOX",idtmed[kAir],pinstart,3);
161 0 : TGeoVolume *ins = gGeoManager->GetVolume("0INS");
162 : //
163 0 : TGeoTranslation *tr[40];
164 0 : TString nameTr;
165 : //C side
166 0 : for (Int_t itr=0; itr<20; itr++) {
167 0 : nameTr = Form("0TR%i",itr+1);
168 0 : z=-pstartA[2]+pinstart[2]+za[itr];
169 0 : tr[itr] = new TGeoTranslation(nameTr.Data(),xa[itr],ya[itr], z );
170 0 : printf(" A %f %f %f \n",xa[itr], ya[itr], z+zdetA);
171 0 : tr[itr]->RegisterYourself();
172 0 : stlinA->AddNode(ins,itr,tr[itr]);
173 0 : z=-pstartC[2]+pinstart[2]+zc[itr];
174 0 : tr[itr+20] = new TGeoTranslation(nameTr.Data(),xc[itr],yc[itr], z );
175 0 : tr[itr+20]->RegisterYourself();
176 0 : stlinC->AddNode(ins,itr+20,tr[itr+20]);
177 0 : printf(" C %f %f %f \n",xc[itr], yc[itr], z+zdetC);
178 : }
179 0 : TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
180 0 : alice->AddNode(stlinA,1,new TGeoTranslation(0,0, zdetA ) );
181 : // alice->AddNode(stlinC,1,new TGeoTranslation(0,0, zdetC ) );
182 0 : TGeoRotation * rotC = new TGeoRotation( "rotC",90., 0., 90., 90., 180., 0.);
183 0 : alice->AddNode(stlinC,1, new TGeoCombiTrans(0., 0., -zdetC , rotC) );
184 :
185 : x=0;
186 : y=0;
187 :
188 : // Entry window (glass)
189 0 : TVirtualMC::GetMC()->Gsvolu("0TOP","BOX",idtmed[kOpGlass],ptop,3); //glass
190 0 : TGeoVolume *top = gGeoManager->GetVolume("0TOP");
191 0 : TVirtualMC::GetMC()->Gsvolu ("0REG", "BOX", idtmed[kOpGlassCathode], preg, 3);
192 0 : TGeoVolume *cat = gGeoManager->GetVolume("0REG");
193 0 : TVirtualMC::GetMC()->Gsvolu("0MCP","BOX",idtmed[kGlass],pmcp,3); //glass
194 0 : TGeoVolume *mcp = gGeoManager->GetVolume("0MCP");
195 :
196 : Int_t ntops=0;
197 : Float_t xin=0, yin=0;
198 0 : for (Int_t ix=0; ix<2; ix++) {
199 0 : xin = - pinstart[0] + 0.55 + (ix+0.5)*2*ptop[0] ;
200 0 : for (Int_t iy=0; iy<2 ; iy++) {
201 0 : z = - pinstart[2]+ptop[2];
202 0 : yin = - pinstart[1] + 0.55 + (iy+0.5)*2*ptop[1];
203 0 : ntops++;
204 0 : ins->AddNode(top, ntops, new TGeoTranslation(xin,yin,z) );
205 : // printf(" 0TOP full x %f y %f z %f \n", xin, yin, z);
206 0 : z = -pinstart[2] + 2 * ptop[2] + preg[2];
207 0 : ins->AddNode(cat, ntops, new TGeoTranslation(xin,yin,z) );
208 :
209 : // printf(" GEOGEO %i %i %i %f %f %f %f %f %f \n", ntops, ix, iy,
210 : // xin,yin,x1[ntops],y1[ntops],x1[ntops]+xin,y1[ntops]+yin);
211 : }
212 : }
213 : // MCP
214 0 : z=-pinstart[2] + 2*ptop[2] + 2*preg[2] + pmcp[2];
215 0 : ins->AddNode(mcp, 1 , new TGeoTranslation(0,0,z) );
216 : /*
217 : //V0A
218 : TVirtualMC::GetMC()->Gsvolu("0V0AM","TUBE",idtmed[kAir],pV0Amother,3);
219 : TVirtualMC::GetMC()->Gspos ("0V0AM",1, "ALIC", 0,0,zV0A , 0, "ONLY");
220 : TVirtualMC::GetMC()->Gsvolu("0V0A","TUBE",idtmed[kSensAir],pV0A,3);
221 : TVirtualMC::GetMC()->Gspos ("0V0A",1, "0V0AM", 0, 0, 0, 0, "ONLY");
222 : */
223 :
224 :
225 0 : }
226 : //------------------------------------------------------------------------
227 : void AliFITv1::AddAlignableVolumes() const
228 : {
229 : //
230 : // Create entries for alignable volumes associating the symbolic volume
231 : // name with the corresponding volume path. Needs to be syncronized with
232 : // eventual changes in the geometry.
233 : //
234 0 : TString volPath;
235 0 : TString symName, sn;
236 0 : TString vpAalign = "/ALIC_1/0STL_1";
237 0 : TString vpCalign = "/ALIC_1/0STR_1";
238 0 : for (Int_t imod=0; imod<2; imod++) {
239 0 : if (imod==0) {volPath = vpCalign; symName="/ALIC_1/0STL"; }
240 0 : if (imod==1) {volPath = vpAalign; symName="/ALIC_1/0STR"; }
241 :
242 0 : AliDebug(2,"--------------------------------------------");
243 0 : AliDebug(2,Form("volPath=%s\n",volPath.Data()));
244 0 : AliDebug(2,Form("symName=%s\n",symName.Data()));
245 0 : AliDebug(2,"--------------------------------------------");
246 0 : if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
247 0 : AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
248 : symName.Data(),volPath.Data()));
249 : }
250 0 : }
251 : //------------------------------------------------------------------------
252 : void AliFITv1::CreateMaterials()
253 : {
254 :
255 0 : Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
256 0 : Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
257 : // Float_t a,z,d,radl,absl,buf[1];
258 : // Int_t nbuf;
259 : // AIR
260 :
261 0 : Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
262 0 : Float_t zAir[4]={6.,7.,8.,18.};
263 0 : Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
264 : Float_t dAir = 1.20479E-3;
265 : Float_t dAir1 = 1.20479E-11;
266 : // Radiator glass SiO2
267 0 : Float_t aglass[2]={28.0855,15.9994};
268 0 : Float_t zglass[2]={14.,8.};
269 0 : Float_t wglass[2]={1.,2.};
270 : Float_t dglass=2.65;
271 : // MCP glass SiO2
272 : Float_t dglass_mcp=1.3;
273 : //*** Definition Of avaible T0 materials ***
274 0 : AliMixture(1, "Vacuum$", aAir, zAir, dAir1,4,wAir);
275 0 : AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
276 0 : AliMixture( 4, "MCP glass $",aglass,zglass,dglass_mcp,-2,wglass);
277 0 : AliMixture( 24, "Radiator Optical glass$",aglass,zglass,dglass,-2,wglass);
278 :
279 0 : AliMedium(1, "Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
280 0 : AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
281 0 : AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
282 :
283 0 : AliMedium(16, "OpticalGlass$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
284 0 : AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
285 0 : AliMedium(22, "SensAir$", 2, 1, isxfld, sxmgmx, 10., .1, 1., .003, .003);
286 :
287 0 : AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
288 :
289 :
290 0 : }
291 :
292 : //-------------------------------------------------------------------
293 : void AliFITv1::DefineOpticalProperties()
294 : {
295 :
296 :
297 : // Optical properties definition.
298 0 : Int_t *idtmed = fIdtmed->GetArray();
299 : // Definition Cherenkov parameters
300 : int i;
301 : const Int_t kNbins=31;
302 :
303 0 : Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
304 0 : Double_t efficMet[kNbins], aReflMet[kNbins];
305 :
306 : // quartz 20mm
307 0 : Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
308 : 25.9, 25.3, 24.9, 24.5, 23.7,
309 : 23.2, 22.8, 22.4, 21.8, 21.3,
310 : 22.8, 22.1, 21.7, 21.2, 20.5,
311 : 19.9, 19.3, 18.7, 18.0, 17.1,
312 : 16.3, 15.3, 14.3, 14.3 };
313 :
314 0 : Float_t aPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
315 : 4.48, 4.58, 4.69, 4.81, 4.93,
316 : 5.05, 5.19, 5.33, 5.48, 5.63,
317 : 5.8, 5.97, 6.16, 6.36, 6.57,
318 : 6.8, 7.04, 7.3, 7.58, 7.89,
319 : 8.22, 8.57, 8.97, 9.39 };
320 0 : Double_t dPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
321 : 4.48, 4.58, 4.69, 4.81, 4.93,
322 : 5.05, 5.19, 5.33, 5.48, 5.63,
323 : 5.8, 5.97, 6.16, 6.36, 6.57,
324 : 6.8, 7.04, 7.3, 7.58, 7.89,
325 : 8.22, 8.57, 8.97, 9.39 };
326 :
327 : /*
328 : Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
329 : 0.21, 0.22, 0.23, 0.24, 0.26,
330 : 0.27, 0.29, 0.30, 0.29, 0.29,
331 : 0.28, 0.28, 0.27, 0.26, 0.25,
332 : 0.25, 0.23, 0.20, 0.19, 0.17,
333 : 0.17, 0.17, 0.2, 0.23};
334 : */
335 : // Float_t aAbsSiO2[kNbins]; //quartz 30mm
336 0 : for(i=0;i<kNbins;i++)
337 :
338 : {
339 0 : aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
340 0 : dPckov[i]=dPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
341 : // rindexAir[i]=0.0001;
342 0 : rindexAir[i] = 1.;
343 0 : rindexSiO2[i]=1.458; //refractive index for qwarts
344 0 : rindexCathodeNext[i]=0;
345 0 : efficAll[i]=1.;
346 0 : efficMet[i]=0.;
347 0 : aReflMet[i]=1.;
348 : // aAbsSiO2[i]=28.5; //quartz 30mm
349 0 : absorAir[i]=0.3;
350 0 : absorbCathodeNext[i]=0;
351 :
352 : }
353 :
354 0 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
355 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
356 0 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
357 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
358 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
359 :
360 : //Define a boarder for radiator optical properties
361 0 : TVirtualMC::GetMC()->DefineOpSurface("surfRd", kUnified /*kGlisur*/,kDielectric_metal,kPolished, 0.);
362 0 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "EFFICIENCY", kNbins, dPckov, efficMet);
363 0 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "REFLECTIVITY", kNbins, dPckov, aReflMet);
364 :
365 :
366 0 : }
367 :
368 : //-------------------------------------------------------------------
369 : void AliFITv1::Init()
370 : {
371 : // Initialises version 0 of the Forward Multiplicity Detector
372 : //
373 0 : AliFIT::Init();
374 0 : fIdSens1=TVirtualMC::GetMC()->VolId("0REG");
375 0 : fIdSens2=TVirtualMC::GetMC()->VolId("0V0A");
376 :
377 0 : AliDebug(1,Form("%s: *** FIT version 1 initialized ***\n",ClassName()));
378 0 : }
379 :
380 : //-------------------------------------------------------------------
381 :
382 : void AliFITv1::StepManager()
383 : {
384 : //
385 : // Called for every step in the T0 Detector
386 : //
387 0 : Int_t id,copy,copy1;
388 : static Float_t hits[6];
389 : static Int_t vol[3];
390 0 : TLorentzVector pos;
391 0 : TLorentzVector mom;
392 :
393 : // TClonesArray &lhits = *fHits;
394 :
395 0 : if(!TVirtualMC::GetMC()->IsTrackAlive()) return; // particle has disappeared
396 :
397 0 : id=TVirtualMC::GetMC()->CurrentVolID(copy);
398 : // Check the sensetive volume
399 0 : if(id==fIdSens1 ) {
400 0 : if(TVirtualMC::GetMC()->IsTrackEntering()) {
401 0 : TVirtualMC::GetMC()->CurrentVolOffID(1,copy1);
402 0 : vol[1] = copy1;
403 0 : vol[0]=copy;
404 0 : TVirtualMC::GetMC()->TrackPosition(pos);
405 0 : hits[0] = pos[0];
406 0 : hits[1] = pos[1];
407 0 : hits[2] = pos[2];
408 0 : if(pos[2]<0) vol[2] = 0;
409 0 : else vol[2] = 1 ;
410 : // printf(" volumes pmt %i mcp %i side %i x %f y %f z %f\n", vol[0], vol[1], vol[2], hits[0], hits[1], hits[2] );
411 :
412 0 : Float_t etot=TVirtualMC::GetMC()->Etot();
413 0 : hits[3]=etot;
414 0 : Int_t iPart= TVirtualMC::GetMC()->TrackPid();
415 0 : Int_t partID=TVirtualMC::GetMC()->IdFromPDG(iPart);
416 0 : hits[4]=partID;
417 0 : Float_t ttime=TVirtualMC::GetMC()->TrackTime();
418 0 : hits[5]=ttime*1e12;
419 0 : if (TVirtualMC::GetMC()->TrackPid() == 50000050) // If particles is photon then ...
420 : {
421 : // if(RegisterPhotoE(vol[1]-1,hits[3])) {
422 0 : if(RegisterPhotoE(hits[3])) {
423 0 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
424 : // Create a track reference at the exit of photocatode
425 : }
426 : }
427 :
428 : //charge particle
429 0 : if ( TVirtualMC::GetMC()->TrackCharge() )
430 0 : AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kFIT);
431 :
432 0 : }// trck entering
433 : } //sensitive
434 : //V0A
435 0 : if(id==fIdSens2 ) {
436 0 : if ( TVirtualMC::GetMC()->TrackCharge() ) {
437 0 : if(TVirtualMC::GetMC()->IsTrackEntering()) {
438 0 : TVirtualMC::GetMC()->TrackPosition(pos);
439 0 : hits[0] = pos[0];
440 0 : hits[1] = pos[1];
441 0 : hits[2] = pos[2];
442 0 : vol[0]=0;
443 0 : vol[1]=0;
444 0 : vol[2]=2;
445 :
446 0 : Float_t etot=TVirtualMC::GetMC()->Etot();
447 0 : hits[3]=etot;
448 0 : Int_t iPart= TVirtualMC::GetMC()->TrackPid();
449 0 : Int_t partID=TVirtualMC::GetMC()->IdFromPDG(iPart);
450 0 : hits[4]=partID;
451 0 : Float_t ttime=TVirtualMC::GetMC()->TrackTime();
452 0 : hits[5]=ttime*1e12;
453 0 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
454 : // printf(" volumes pmt %i mcp %i vol %i x %f y %f z %f particle %i all \n", vol[0], vol[1], vol[2], hits[0], hits[1], hits[2], hits[4]);
455 0 : }
456 : }
457 : }
458 :
459 0 : }
460 :
461 :
462 : //------------------------------------------------------------------------
463 : Bool_t AliFITv1::RegisterPhotoE(Double_t energy)
464 : {
465 :
466 :
467 : // Float_t hc=197.326960*1.e6; //mev*nm
468 : Double_t hc=1.973*1.e-6; //gev*nm
469 0 : Float_t lambda=hc/energy;
470 0 : Float_t eff = fPMTeff->Eval(lambda);
471 0 : Double_t p = gRandom->Rndm();
472 :
473 0 : if (p > eff)
474 0 : return kFALSE;
475 :
476 0 : return kTRUE;
477 0 : }
478 :
479 : //----------------------------------------------------------------------------
480 :
481 : void AliFITv1::SetPMTeff()
482 : {
483 0 : Float_t lambda[50];
484 0 : Float_t eff[50 ] = {0, 0, 0.23619, 0.202909, 0.177913,
485 : 0.175667, 0.17856, 0.190769, 0.206667, 0.230286,
486 : 0.252276, 0.256267,0.26, 0.27125, 0.281818,
487 : 0.288118, 0.294057,0.296222, 0.301622, 0.290421,
488 : 0.276615, 0.2666, 0.248, 0.23619, 0.227814,
489 : 0.219818, 0.206667,0.194087, 0.184681, 0.167917,
490 : 0.154367, 0.1364, 0.109412, 0.0834615,0.0725283,
491 : 0.0642963,0.05861, 0.0465, 0.0413333,0.032069,
492 : 0.0252203,0.02066, 0.016262, 0.012, 0.00590476,
493 : 0.003875, 0.00190, 0, 0, 0 } ;
494 0 : for (Int_t i=0; i<50; i++) lambda[i]=200+10*i;
495 :
496 0 : fPMTeff = new TGraph(50,lambda,eff);
497 :
498 0 : }
499 :
500 :
501 :
502 :
503 :
|
