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/AliFITv2Class.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 "AliFITv2.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(AliFITv2)
64 :
65 :
66 : //--------------------------------------------------------------------
67 0 : AliFITv2::AliFITv2(): AliFIT(),
68 0 : fIdSens1(0),
69 0 : fIdSens2(0),
70 0 : fPMTeff(0x0)
71 :
72 0 : {
73 : //
74 : // Standart constructor for T0 Detector version 0
75 0 : }
76 : //--------------------------------------------------------------------
77 : AliFITv2::AliFITv2(const char *name, const char *title):
78 0 : AliFIT(name,title),
79 0 : fIdSens1(0),
80 0 : fIdSens2(0),
81 0 : fPMTeff(0x0)
82 :
83 0 : {
84 : //
85 : // Standart constructor for T0 Detector version 0
86 : //
87 0 : fIshunt = 2;
88 0 : SetPMTeff();
89 0 : }
90 : //_____________________________________________________________________________
91 :
92 : AliFITv2::~AliFITv2()
93 0 : {
94 : // desctructor
95 0 : }
96 :
97 : //-------------------------------------------------------------------------
98 : void AliFITv2::CreateGeometry()
99 : {
100 : //
101 : // Create the geometry of FIT Detector version 1 full geometry
102 : //
103 : // begin Html
104 : //
105 :
106 0 : Int_t *idtmed = fIdtmed->GetArray();
107 : Float_t zdetC = 84.;
108 : Float_t zdetA = 335;
109 :
110 0 : Int_t idrotm[999];
111 : Double_t x,y,z;
112 0 : Float_t pstartC[3] = {6., 20 ,4.5};
113 0 : Float_t pstartA[3] = {2.55, 20 ,4.5};
114 : // Float_t pinstart[3] = {3.2,3.2,3.9};
115 0 : Float_t pinstart[3] = {3.2,3.2,4.};
116 0 : Float_t pmcp[3] = {3.19, 3.19, 2.8}; //MCP
117 0 : Float_t ptop[3] = {1.324, 1.324, 1.};//cherenkov radiator
118 0 : Float_t preg[3] = {1.324, 1.324, 0.05};//photcathode
119 :
120 : Float_t zV0A = 325.;
121 : Float_t zV0C = 89;
122 0 : Float_t pV0Amother[3] = {4.25, 41.25, 0.15};
123 0 : Float_t pV0A[3] = {4.3, 41.2, 0.1};
124 :
125 0 : AliMatrix(idrotm[901], 90., 0., 90., 90., 180., 0.);
126 :
127 : //-------------------------------------------------------------------
128 : // T0 volume
129 : //-------------------------------------------------------------------
130 :
131 0 : TGeoVolumeAssembly * stlinA = new TGeoVolumeAssembly("0STL"); // A side mother
132 0 : TGeoVolumeAssembly * stlinC = new TGeoVolumeAssembly("0STR"); // C side mother
133 : //T0 interior
134 0 : TVirtualMC::GetMC()->Gsvolu("0INS","BOX",idtmed[kAir],pinstart,3);
135 0 : TGeoVolume *ins = gGeoManager->GetVolume("0INS");
136 : //
137 0 : TGeoTranslation *tr[40];
138 0 : TString nameTr;
139 : //C side
140 : Float_t xa=-12.8;
141 : Float_t ya=-12.8;
142 : Int_t itr=0;
143 0 : for (Int_t itrx=0; itrx<5; itrx++) {
144 0 : for (Int_t itry=0; itry<5; itry++) {
145 0 : nameTr = Form("0TR%i",itr+1);
146 0 : z=-pstartA[2]+pinstart[2];
147 0 : if(itr !=12){
148 : // if(TMath::Abs(xa)<10 && TMath::Abs(ya)<10) z= z+2;
149 0 : tr[itr] = new TGeoTranslation(nameTr.Data(),xa,ya, z );
150 0 : tr[itr]->RegisterYourself();
151 0 : stlinA->AddNode(ins,itr,tr[itr]);
152 : }
153 0 : printf(" A %i %f %f %f \n",itr, xa, ya, z+zdetA);
154 : itr++;
155 0 : ya+=6.4;
156 : }
157 : ya=-12.8;
158 0 : xa+=6.4;
159 : }
160 : //T0+ C
161 : Float_t xc=-16;
162 : Float_t yc=-16;
163 0 : for (Int_t itrx=0; itrx<6; itrx++) {
164 0 : for (Int_t itry=0; itry<6; itry++) {
165 0 : nameTr = Form("0TR%i",itr+1);
166 0 : z=-pstartC[2]+pinstart[2];
167 0 : if (itr!=25 && itr!=30 && itr!=60 && itr!=55
168 0 : && itr!=39 && itr!=40 && itr!=45 &&itr!=46) {
169 : // if( TMath::Abs(xc)<10 && TMath::Abs(yc)<10) z= z+2;
170 0 : tr[itr] = new TGeoTranslation(nameTr.Data(),xc,yc, z );
171 0 : tr[itr]->RegisterYourself();
172 0 : stlinC->AddNode(ins,itr,tr[itr]);
173 : }
174 : else
175 0 : printf("HOLE C %i %f %f %f \n",itr,xc, yc, z+zdetC);
176 :
177 0 : printf(" C %i %f %f %f \n",itr,xc, yc, z+zdetC);
178 : itr++;
179 0 : yc+=6.4;
180 : }
181 : yc=-16;
182 0 : xc+=6.4;
183 : }
184 0 : TGeoVolume *alice = gGeoManager->GetVolume("ALIC");
185 0 : alice->AddNode(stlinA,1,new TGeoTranslation(0,0, zdetA ) );
186 : // alice->AddNode(stlinC,1,new TGeoTranslation(0,0, zdetC ) );
187 0 : TGeoRotation * rotC = new TGeoRotation( "rotC",90., 0., 90., 90., 180., 0.);
188 0 : alice->AddNode(stlinC,1, new TGeoCombiTrans(0., 0., -zdetC , rotC) );
189 :
190 : x=0;
191 : y=0;
192 :
193 : // Entry window (glass)
194 0 : TVirtualMC::GetMC()->Gsvolu("0TOP","BOX",idtmed[kOpGlass],ptop,3); //glass
195 0 : TGeoVolume *top = gGeoManager->GetVolume("0TOP");
196 0 : TVirtualMC::GetMC()->Gsvolu ("0REG", "BOX", idtmed[kOpGlassCathode], preg, 3);
197 0 : TGeoVolume *cat = gGeoManager->GetVolume("0REG");
198 0 : TVirtualMC::GetMC()->Gsvolu("0MCP","BOX",idtmed[kGlass],pmcp,3); //glass
199 0 : TGeoVolume *mcp = gGeoManager->GetVolume("0MCP");
200 :
201 : Int_t ntops=0;
202 : Float_t xin=0, yin=0;
203 0 : for (Int_t ix=0; ix<2; ix++) {
204 0 : xin = - pinstart[0] + 0.55 + (ix+0.5)*2*ptop[0] ;
205 0 : for (Int_t iy=0; iy<2 ; iy++) {
206 0 : z = - pinstart[2]+ptop[2];
207 0 : yin = - pinstart[1] + 0.55 + (iy+0.5)*2*ptop[1];
208 0 : ntops++;
209 0 : ins->AddNode(top, ntops, new TGeoTranslation(xin,yin,z) );
210 : // printf(" 0TOP full x %f y %f z %f \n", xin, yin, z);
211 0 : z = -pinstart[2] + 2 * ptop[2] + preg[2];
212 0 : ins->AddNode(cat, ntops, new TGeoTranslation(xin,yin,z) );
213 :
214 : // printf(" GEOGEO %i %i %i %f %f %f %f %f %f \n", ntops, ix, iy,
215 : // xin,yin,x1[ntops],y1[ntops],x1[ntops]+xin,y1[ntops]+yin);
216 : }
217 : }
218 : // MCP
219 0 : z=-pinstart[2] + 2*ptop[2] + 2*preg[2] + pmcp[2];
220 0 : ins->AddNode(mcp, 1 , new TGeoTranslation(0,0,z) );
221 :
222 : //V0A && V0C
223 0 : TVirtualMC::GetMC()->Gsvolu("0V0AM","TUBE",idtmed[kAir],pV0Amother,3);
224 0 : TVirtualMC::GetMC()->Gspos ("0V0AM",1, "ALIC", 0,0,zV0A , 0, "ONLY");
225 0 : TVirtualMC::GetMC()->Gspos ("0V0AM",2, "ALIC", 0,0,-zV0C , 0, "ONLY");
226 0 : TVirtualMC::GetMC()->Gsvolu("0V0A","TUBE",idtmed[kSensAir],pV0A,3);
227 0 : TVirtualMC::GetMC()->Gspos ("0V0A",1, "0V0AM", 0, 0, 0, 0, "ONLY");
228 :
229 :
230 :
231 0 : }
232 : //------------------------------------------------------------------------
233 : void AliFITv2::AddAlignableVolumes() const
234 : {
235 : //
236 : // Create entries for alignable volumes associating the symbolic volume
237 : // name with the corresponding volume path. Needs to be syncronized with
238 : // eventual changes in the geometry.
239 : //
240 0 : TString volPath;
241 0 : TString symName, sn;
242 0 : TString vpAalign = "/ALIC_1/0STL_1";
243 0 : TString vpCalign = "/ALIC_1/0STR_1";
244 0 : for (Int_t imod=0; imod<2; imod++) {
245 0 : if (imod==0) {volPath = vpCalign; symName="/ALIC_1/0STL"; }
246 0 : if (imod==1) {volPath = vpAalign; symName="/ALIC_1/0STR"; }
247 :
248 0 : AliDebug(2,"--------------------------------------------");
249 0 : AliDebug(2,Form("volPath=%s\n",volPath.Data()));
250 0 : AliDebug(2,Form("symName=%s\n",symName.Data()));
251 0 : AliDebug(2,"--------------------------------------------");
252 0 : if(!gGeoManager->SetAlignableEntry(symName.Data(),volPath.Data()))
253 0 : AliFatal(Form("Alignable entry %s not created. Volume path %s not valid",
254 : symName.Data(),volPath.Data()));
255 : }
256 0 : }
257 : //------------------------------------------------------------------------
258 : void AliFITv2::CreateMaterials()
259 : {
260 :
261 0 : Int_t isxfld = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Integ();
262 0 : Float_t sxmgmx = ((AliMagF*)TGeoGlobalMagField::Instance()->GetField())->Max();
263 : // Float_t a,z,d,radl,absl,buf[1];
264 : // Int_t nbuf;
265 : // AIR
266 :
267 0 : Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
268 0 : Float_t zAir[4]={6.,7.,8.,18.};
269 0 : Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
270 : Float_t dAir = 1.20479E-3;
271 : Float_t dAir1 = 1.20479E-11;
272 : // Radiator glass SiO2
273 0 : Float_t aglass[2]={28.0855,15.9994};
274 0 : Float_t zglass[2]={14.,8.};
275 0 : Float_t wglass[2]={1.,2.};
276 : Float_t dglass=2.65;
277 : // MCP glass SiO2
278 : Float_t dglass_mcp=1.3;
279 : //*** Definition Of avaible T0 materials ***
280 0 : AliMixture(1, "Vacuum$", aAir, zAir, dAir1,4,wAir);
281 0 : AliMixture(2, "Air$", aAir, zAir, dAir,4,wAir);
282 0 : AliMixture( 4, "MCP glass $",aglass,zglass,dglass_mcp,-2,wglass);
283 0 : AliMixture( 24, "Radiator Optical glass$",aglass,zglass,dglass,-2,wglass);
284 :
285 0 : AliMedium(1, "Air$", 2, 0, isxfld, sxmgmx, 10., .1, 1., .003, .003);
286 0 : AliMedium(3, "Vacuum$", 1, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
287 0 : AliMedium(6, "Glass$", 4, 0, isxfld, sxmgmx, 10., .01, .1, .003, .003);
288 :
289 0 : AliMedium(16, "OpticalGlass$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
290 0 : AliMedium(19, "OpticalGlassCathode$", 24, 1, isxfld, sxmgmx, 10., .01, .1, .003, .003);
291 0 : AliMedium(22, "SensAir$", 2, 1, isxfld, sxmgmx, 10., .1, 1., .003, .003);
292 :
293 0 : AliDebugClass(1,": ++++++++++++++Medium set++++++++++");
294 :
295 :
296 0 : }
297 :
298 : //-------------------------------------------------------------------
299 : void AliFITv2::DefineOpticalProperties()
300 : {
301 :
302 :
303 : // Optical properties definition.
304 0 : Int_t *idtmed = fIdtmed->GetArray();
305 : // Definition Cherenkov parameters
306 : int i;
307 : const Int_t kNbins=31;
308 :
309 0 : Float_t rindexSiO2[kNbins], efficAll[kNbins], rindexAir[kNbins], absorAir[kNbins],rindexCathodeNext[kNbins], absorbCathodeNext[kNbins];
310 0 : Double_t efficMet[kNbins], aReflMet[kNbins];
311 :
312 : // quartz 20mm
313 0 : Float_t aAbsSiO2[kNbins]={29.0, 28.6, 28.3, 27.7, 27.3, 26.7, 26.4,
314 : 25.9, 25.3, 24.9, 24.5, 23.7,
315 : 23.2, 22.8, 22.4, 21.8, 21.3,
316 : 22.8, 22.1, 21.7, 21.2, 20.5,
317 : 19.9, 19.3, 18.7, 18.0, 17.1,
318 : 16.3, 15.3, 14.3, 14.3 };
319 :
320 0 : Float_t aPckov[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 0 : Double_t dPckov[kNbins] ={3.87, 3.94, 4.02, 4.11, 4.19, 4.29, 4.38,
327 : 4.48, 4.58, 4.69, 4.81, 4.93,
328 : 5.05, 5.19, 5.33, 5.48, 5.63,
329 : 5.8, 5.97, 6.16, 6.36, 6.57,
330 : 6.8, 7.04, 7.3, 7.58, 7.89,
331 : 8.22, 8.57, 8.97, 9.39 };
332 :
333 : /*
334 : Float_t effCathode[kNbins]={0.11, 0.13, 0.15, 0.16, 0.18, 0.19, 0.20,
335 : 0.21, 0.22, 0.23, 0.24, 0.26,
336 : 0.27, 0.29, 0.30, 0.29, 0.29,
337 : 0.28, 0.28, 0.27, 0.26, 0.25,
338 : 0.25, 0.23, 0.20, 0.19, 0.17,
339 : 0.17, 0.17, 0.2, 0.23};
340 : */
341 : // Float_t aAbsSiO2[kNbins]; //quartz 30mm
342 0 : for(i=0;i<kNbins;i++)
343 :
344 : {
345 0 : aPckov[i]=aPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
346 0 : dPckov[i]=dPckov[i]*1e-9;//Photons energy bins 4 eV - 8.5 eV step 0.1 eV
347 : // rindexAir[i]=0.0001;
348 0 : rindexAir[i] = 1.;
349 0 : rindexSiO2[i]=1.458; //refractive index for qwarts
350 0 : rindexCathodeNext[i]=0;
351 0 : efficAll[i]=1.;
352 0 : efficMet[i]=0.;
353 0 : aReflMet[i]=1.;
354 : // aAbsSiO2[i]=28.5; //quartz 30mm
355 0 : absorAir[i]=0.3;
356 0 : absorbCathodeNext[i]=0;
357 :
358 : }
359 :
360 0 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlass], kNbins, aPckov, aAbsSiO2, efficAll, rindexSiO2 );
361 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2, effCathode, rindexSiO2 );
362 0 : TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpGlassCathode], kNbins, aPckov, aAbsSiO2,efficAll , rindexSiO2 );
363 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAir], kNbins, aPckov,absorAir , efficAll,rindexAir );
364 : // TVirtualMC::GetMC()->SetCerenkov (idtmed[kOpAirNext], kNbins, aPckov,absorbCathodeNext , efficAll, rindexCathodeNext);
365 :
366 : //Define a boarder for radiator optical properties
367 0 : TVirtualMC::GetMC()->DefineOpSurface("surfRd", kUnified /*kGlisur*/,kDielectric_metal,kPolished, 0.);
368 0 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "EFFICIENCY", kNbins, dPckov, efficMet);
369 0 : TVirtualMC::GetMC()->SetMaterialProperty("surfRd", "REFLECTIVITY", kNbins, dPckov, aReflMet);
370 :
371 :
372 0 : }
373 :
374 : //-------------------------------------------------------------------
375 : void AliFITv2::Init()
376 : {
377 : // Initialises version 0 of the Forward Multiplicity Detector
378 : //
379 0 : AliFIT::Init();
380 0 : fIdSens1=TVirtualMC::GetMC()->VolId("0REG");
381 0 : fIdSens2=TVirtualMC::GetMC()->VolId("0V0A");
382 :
383 0 : AliDebug(1,Form("%s: *** FIT version 1 initialized ***\n",ClassName()));
384 0 : }
385 :
386 : //-------------------------------------------------------------------
387 :
388 : void AliFITv2::StepManager()
389 : {
390 : //
391 : // Called for every step in the T0 Detector
392 : //
393 0 : Int_t id,copy,copy1;
394 : static Float_t hits[6];
395 : static Int_t vol[3];
396 0 : TLorentzVector pos;
397 0 : TLorentzVector mom;
398 :
399 : // TClonesArray &lhits = *fHits;
400 :
401 0 : if(!TVirtualMC::GetMC()->IsTrackAlive()) return; // particle has disappeared
402 :
403 0 : id=TVirtualMC::GetMC()->CurrentVolID(copy);
404 : // Check the sensetive volume
405 0 : if(id==fIdSens1 ) {
406 0 : if(TVirtualMC::GetMC()->IsTrackEntering()) {
407 0 : TVirtualMC::GetMC()->CurrentVolOffID(1,copy1);
408 0 : vol[1] = copy1;
409 0 : vol[0]=copy;
410 0 : TVirtualMC::GetMC()->TrackPosition(pos);
411 0 : hits[0] = pos[0];
412 0 : hits[1] = pos[1];
413 0 : hits[2] = pos[2];
414 0 : if(pos[2]<0) vol[2] = 0;
415 0 : else vol[2] = 1 ;
416 : // 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] );
417 :
418 0 : Float_t etot=TVirtualMC::GetMC()->Etot();
419 0 : hits[3]=etot;
420 0 : Int_t iPart= TVirtualMC::GetMC()->TrackPid();
421 0 : Int_t partID=TVirtualMC::GetMC()->IdFromPDG(iPart);
422 0 : hits[4]=partID;
423 0 : Float_t ttime=TVirtualMC::GetMC()->TrackTime();
424 0 : hits[5]=ttime*1e12;
425 0 : if (TVirtualMC::GetMC()->TrackPid() == 50000050) // If particles is photon then ...
426 : {
427 0 : if(RegisterPhotoE(hits[3])) {
428 0 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
429 : // Create a track reference at the exit of photocatode
430 : }
431 : }
432 0 : if ( TVirtualMC::GetMC()->TrackCharge() )
433 0 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
434 :
435 : //charge particle
436 0 : if ( TVirtualMC::GetMC()->TrackCharge() )
437 0 : AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kFIT);
438 :
439 0 : }// trck entering
440 : } //sensitive
441 : //V0A
442 0 : if(id==fIdSens2 ) {
443 0 : if ( TVirtualMC::GetMC()->TrackCharge() ) {
444 0 : if(TVirtualMC::GetMC()->IsTrackEntering()) {
445 0 : TVirtualMC::GetMC()->TrackPosition(pos);
446 0 : hits[0] = pos[0];
447 0 : hits[1] = pos[1];
448 0 : hits[2] = pos[2];
449 0 : vol[0]=0;
450 0 : vol[1]=0;
451 0 : vol[2]=2;
452 :
453 0 : Float_t etot=TVirtualMC::GetMC()->Etot();
454 0 : hits[3]=etot;
455 0 : Int_t iPart= TVirtualMC::GetMC()->TrackPid();
456 0 : Int_t partID=TVirtualMC::GetMC()->IdFromPDG(iPart);
457 0 : hits[4]=partID;
458 0 : Float_t ttime=TVirtualMC::GetMC()->TrackTime();
459 0 : hits[5]=ttime*1e12;
460 0 : AddHit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol,hits);
461 : // 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]);
462 0 : AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber(), AliTrackReference::kFIT);
463 0 : }
464 : }
465 : }
466 :
467 0 : }
468 :
469 :
470 : //------------------------------------------------------------------------
471 : Bool_t AliFITv2::RegisterPhotoE(Double_t energy)
472 : {
473 :
474 :
475 : // Float_t hc=197.326960*1.e6; //mev*nm
476 : Double_t hc=1.973*1.e-6; //gev*nm
477 0 : Float_t lambda=hc/energy;
478 0 : Float_t eff = fPMTeff->Eval(lambda);
479 0 : Double_t p = gRandom->Rndm();
480 :
481 0 : if (p > eff)
482 0 : return kFALSE;
483 :
484 0 : return kTRUE;
485 0 : }
486 :
487 : //----------------------------------------------------------------------------
488 :
489 : void AliFITv2::SetPMTeff()
490 : {
491 0 : Float_t lambda[50];
492 0 : Float_t eff[50 ] = {0, 0, 0.23619, 0.202909, 0.177913,
493 : 0.175667, 0.17856, 0.190769, 0.206667, 0.230286,
494 : 0.252276, 0.256267,0.26, 0.27125, 0.281818,
495 : 0.288118, 0.294057,0.296222, 0.301622, 0.290421,
496 : 0.276615, 0.2666, 0.248, 0.23619, 0.227814,
497 : 0.219818, 0.206667,0.194087, 0.184681, 0.167917,
498 : 0.154367, 0.1364, 0.109412, 0.0834615,0.0725283,
499 : 0.0642963,0.05861, 0.0465, 0.0413333,0.032069,
500 : 0.0252203,0.02066, 0.016262, 0.012, 0.00590476,
501 : 0.003875, 0.00190, 0, 0, 0 } ;
502 0 : for (Int_t i=0; i<50; i++) lambda[i]=200+10*i;
503 :
504 0 : fPMTeff = new TGraph(50,lambda,eff);
505 :
506 0 : }
507 :
508 :
509 :
510 :
511 :
|
