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add dimuon trigger efficiency
[u/mrichter/AliRoot.git] / TRD / AliTRDSimParam.cxx
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3551db50 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/* $Id$ */
17
18///////////////////////////////////////////////////////////////////////////////
19// //
20// Class containing constant simulation parameters //
21// //
22// Request an instance with AliTRDSimParam::Instance() //
23// Then request the needed values //
24// //
25///////////////////////////////////////////////////////////////////////////////
26
27#include <TMath.h>
28
29#include "AliRun.h"
30
31#include "AliTRDSimParam.h"
32
33ClassImp(AliTRDSimParam)
34
35AliTRDSimParam* AliTRDSimParam::fgInstance = 0;
36Bool_t AliTRDSimParam::fgTerminated = kFALSE;
37
38//_ singleton implementation __________________________________________________
39AliTRDSimParam* AliTRDSimParam::Instance()
40{
41 //
42 // Singleton implementation
43 // Returns an instance of this class, it is created if neccessary
44 //
45
46 if (fgTerminated != kFALSE)
47 return 0;
48
49 if (fgInstance == 0)
50 fgInstance = new AliTRDSimParam();
51
52 return fgInstance;
53}
54
55void AliTRDSimParam::Terminate()
56{
57 //
58 // Singleton implementation
59 // Deletes the instance of this class and sets the terminated flag, instances cannot be requested anymore
60 // This function can be called several times.
61 //
62
63 fgTerminated = kTRUE;
64
65 if (fgInstance != 0)
66 {
67 delete fgInstance;
68 fgInstance = 0;
69 }
70}
71
72//_____________________________________________________________________________
73AliTRDSimParam::AliTRDSimParam()
74{
75 //
76 // default constructor
77 //
78
79 fGasGain = 0.0;
80 fNoise = 0.0;
81 fChipGain = 0.0;
82
83 fADCoutRange = 0.0;
84 fADCinRange = 0.0;
85 fADCthreshold = 0;
86 fADCbaseline = 0;
87
88 fDiffusionOn = kFALSE;
89
90 fElAttachOn = kFALSE;
91 fElAttachProp = 0.0;
92
93 fTRFOn = kFALSE;
94 fTRFsmp = 0;
95 fTRFbin = 0;
96 fTRFlo = 0.0;
97 fTRFhi = 0.0;
98 fTRFwid = 0.0;
99
100 fCTOn = kFALSE;
101 fCTsmp = 0;
102
103 fTCOn = kFALSE;
104
105 fTCnexp = 0;
106
107 fAnodeWireOffset = 0.0;
108 fPadCoupling = 0.0;
109 fTimeCoupling = 0.0;
110 fTimeStructOn = kFALSE;
111
112 Init();
113}
114
115//_____________________________________________________________________________
116void AliTRDSimParam::Init()
117{
118 //
119 // default initializiation
120 //
121
122 // The default parameter for the digitization
123 fGasGain = 4000.;
124 fChipGain = 12.4;
125 fNoise = 1000.;
126 fADCoutRange = 1023.; // 10-bit ADC
127 fADCinRange = 2000.; // 2V input range
128 fADCthreshold = 1;
129 fADCbaseline = 0;
130
131 // Diffusion on
132 fDiffusionOn = kTRUE;
133
134 // Propability for electron attachment
135 fElAttachOn = kFALSE;
136 fElAttachProp = 0.0;
137
138 // The time response function
139 fTRFOn = kTRUE;
140
141 // The cross talk
142 fCTOn = kTRUE;
143
144 // The tail cancelation
145 fTCOn = kTRUE;
146
147 // The number of exponentials
148 fTCnexp = 1;
149
150 // The pad coupling factor
151 //fPadCoupling = 0.3;
152 // Use 0.46 instead which reproduces better the test beam
153 // data, even tough it is not understood why.
154 fPadCoupling = 0.46;
155
156 // The time coupling factor (same number as for the TPC)
157 fTimeCoupling = 0.4;
158
159 // Distance of first Anode wire from first pad edge
160 fAnodeWireOffset = 0.25;
161
162 // Use drift time maps
163 fTimeStructOn = kTRUE;
164
165 ReInit();
ab0a4106 166}
3551db50 167
168//_____________________________________________________________________________
169AliTRDSimParam::~AliTRDSimParam()
170{
171 //
172 // destructor
173 //
174
175 if (fTRFsmp) {
176 delete [] fTRFsmp;
177 fTRFsmp = 0;
178 }
179
180 if (fCTsmp) {
181 delete [] fCTsmp;
182 fCTsmp = 0;
183 }
ab0a4106 184}
3551db50 185
186//_____________________________________________________________________________
187AliTRDSimParam::AliTRDSimParam(const AliTRDSimParam &p):TObject(p)
188{
189 //
190 // copy constructor
191 //
192
193 ((AliTRDSimParam &) p).Copy(*this);
194}
195
196
197//_____________________________________________________________________________
198AliTRDSimParam &AliTRDSimParam::operator=(const AliTRDSimParam &p)
199{
200 //
201 // Assignment operator
202 //
203
204 if (this != &p) ((AliTRDSimParam &) p).Copy(*this);
205 return *this;
206}
207
208//_____________________________________________________________________________
209void AliTRDSimParam::Copy(TObject &p) const
210{
211 //
212 // Copy function
213 //
214
215 AliTRDSimParam* target = dynamic_cast<AliTRDSimParam*> (&p);
216 if (!target)
217 return;
218
219 target->fGasGain = fGasGain;
220 //target->fField = fField;
221 target->fNoise = fNoise;
222 target->fChipGain = fChipGain;
223
224 target->fADCoutRange = fADCoutRange;
225 target->fADCinRange = fADCinRange;
226 target->fADCthreshold = fADCthreshold;
227 target->fADCbaseline = fADCbaseline;
228
229 target->fDiffusionOn = fDiffusionOn;
230
231 target->fElAttachOn = fElAttachOn;
232 target->fElAttachProp = fElAttachProp;
233
234 target->fTRFOn = fTRFOn;
235 if (target->fTRFsmp)
236 delete[] target->fTRFsmp;
237 target->fTRFsmp = new Float_t[fTRFbin];
238 for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
239 target->fTRFsmp[iBin] = fTRFsmp[iBin];
240 }
241 target->fTRFbin = fTRFbin;
242 target->fTRFlo = fTRFlo;
243 target->fTRFhi = fTRFhi;
244 target->fTRFwid = fTRFwid;
245
246 target->fCTOn = fCTOn;
247 if (target->fCTsmp)
248 delete[] target->fCTsmp;
249 target->fCTsmp = new Float_t[fTRFbin];
250 for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
251 target->fCTsmp[iBin] = fCTsmp[iBin];
252 }
253
254 target->fTCOn = fTCOn;
255 target->fTCnexp = fTCnexp;
256
257 target->fAnodeWireOffset = fAnodeWireOffset;
258 target->fPadCoupling = fPadCoupling;
259 target->fTimeCoupling = fTimeCoupling;
260}
261
262//_____________________________________________________________________________
263void AliTRDSimParam::ReInit()
264{
265 //
266 // Reinitializes the parameter class after a change
267 //
268
269 // The range and the binwidth for the sampled TRF
270 fTRFbin = 100;
271 // Start 0.2 mus before the signal
272 fTRFlo = -0.2;
273 // End the maximum drift time after the signal
274 fTRFhi = 2.2;
275 //
276 fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);
277
278 // Create the sampled TRF
279 SampleTRF();
280}
281
282//_____________________________________________________________________________
283void AliTRDSimParam::SampleTRF()
284{
285 //
286 // Samples the time response function
287 //
288 // New TRF from Venelin Angelov, simulated with CADENCE
289 // Pad-ground capacitance = 25 pF
290 // Pad-pad cross talk capacitance = 6 pF
291 //
292
293 Int_t ipos1;
294 Int_t ipos2;
295 Float_t diff;
296
297 const Int_t kNpasa = 252;
298
299 Float_t time[kNpasa] = { -0.220000, -0.210000, -0.200000, -0.190000
300 , -0.180000, -0.170000, -0.160000, -0.150000
301 , -0.140000, -0.130000, -0.120000, -0.110000
302 , -0.100000, -0.090000, -0.080000, -0.070000
303 , -0.060000, -0.050000, -0.040000, -0.030000
304 , -0.020000, -0.010000, -0.000000, 0.010000
305 , 0.020000, 0.030000, 0.040000, 0.050000
306 , 0.060000, 0.070000, 0.080000, 0.090000
307 , 0.100000, 0.110000, 0.120000, 0.130000
308 , 0.140000, 0.150000, 0.160000, 0.170000
309 , 0.180000, 0.190000, 0.200000, 0.210000
310 , 0.220000, 0.230000, 0.240000, 0.250000
311 , 0.260000, 0.270000, 0.280000, 0.290000
312 , 0.300000, 0.310000, 0.320000, 0.330000
313 , 0.340000, 0.350000, 0.360000, 0.370000
314 , 0.380000, 0.390000, 0.400000, 0.410000
315 , 0.420000, 0.430000, 0.440000, 0.450000
316 , 0.460000, 0.470000, 0.480000, 0.490000
317 , 0.500000, 0.510000, 0.520000, 0.530000
318 , 0.540000, 0.550000, 0.560000, 0.570000
319 , 0.580000, 0.590000, 0.600000, 0.610000
320 , 0.620000, 0.630000, 0.640000, 0.650000
321 , 0.660000, 0.670000, 0.680000, 0.690000
322 , 0.700000, 0.710000, 0.720000, 0.730000
323 , 0.740000, 0.750000, 0.760000, 0.770000
324 , 0.780000, 0.790000, 0.800000, 0.810000
325 , 0.820000, 0.830000, 0.840000, 0.850000
326 , 0.860000, 0.870000, 0.880000, 0.890000
327 , 0.900000, 0.910000, 0.920000, 0.930000
328 , 0.940000, 0.950000, 0.960000, 0.970000
329 , 0.980000, 0.990000, 1.000000, 1.010000
330 , 1.020000, 1.030000, 1.040000, 1.050000
331 , 1.060000, 1.070000, 1.080000, 1.090000
332 , 1.100000, 1.110000, 1.120000, 1.130000
333 , 1.140000, 1.150000, 1.160000, 1.170000
334 , 1.180000, 1.190000, 1.200000, 1.210000
335 , 1.220000, 1.230000, 1.240000, 1.250000
336 , 1.260000, 1.270000, 1.280000, 1.290000
337 , 1.300000, 1.310000, 1.320000, 1.330000
338 , 1.340000, 1.350000, 1.360000, 1.370000
339 , 1.380000, 1.390000, 1.400000, 1.410000
340 , 1.420000, 1.430000, 1.440000, 1.450000
341 , 1.460000, 1.470000, 1.480000, 1.490000
342 , 1.500000, 1.510000, 1.520000, 1.530000
343 , 1.540000, 1.550000, 1.560000, 1.570000
344 , 1.580000, 1.590000, 1.600000, 1.610000
345 , 1.620000, 1.630000, 1.640000, 1.650000
346 , 1.660000, 1.670000, 1.680000, 1.690000
347 , 1.700000, 1.710000, 1.720000, 1.730000
348 , 1.740000, 1.750000, 1.760000, 1.770000
349 , 1.780000, 1.790000, 1.800000, 1.810000
350 , 1.820000, 1.830000, 1.840000, 1.850000
351 , 1.860000, 1.870000, 1.880000, 1.890000
352 , 1.900000, 1.910000, 1.920000, 1.930000
353 , 1.940000, 1.950000, 1.960000, 1.970000
354 , 1.980000, 1.990000, 2.000000, 2.010000
355 , 2.020000, 2.030000, 2.040000, 2.050000
356 , 2.060000, 2.070000, 2.080000, 2.090000
357 , 2.100000, 2.110000, 2.120000, 2.130000
358 , 2.140000, 2.150000, 2.160000, 2.170000
359 , 2.180000, 2.190000, 2.200000, 2.210000
360 , 2.220000, 2.230000, 2.240000, 2.250000
361 , 2.260000, 2.270000, 2.280000, 2.290000 };
362
363 Float_t signal[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000
364 , 0.000000, 0.000000, 0.000000, 0.000396
365 , 0.005096, 0.022877, 0.061891, 0.126614
366 , 0.215798, 0.324406, 0.444507, 0.566817
367 , 0.683465, 0.787089, 0.873159, 0.937146
368 , 0.979049, 0.999434, 1.000000, 0.983579
369 , 0.954134, 0.913364, 0.866365, 0.813703
370 , 0.759910, 0.706116, 0.653454, 0.603624
371 , 0.556625, 0.514156, 0.475085, 0.439977
372 , 0.408834, 0.380578, 0.355549, 0.333352
373 , 0.313647, 0.296093, 0.280351, 0.266195
374 , 0.253397, 0.241789, 0.231257, 0.221574
375 , 0.212627, 0.204417, 0.196772, 0.189581
376 , 0.182956, 0.176784, 0.171008, 0.165515
377 , 0.160419, 0.155606, 0.151076, 0.146716
378 , 0.142639, 0.138845, 0.135221, 0.131767
379 , 0.128482, 0.125368, 0.122424, 0.119592
380 , 0.116931, 0.114326, 0.111891, 0.109513
381 , 0.107248, 0.105096, 0.103058, 0.101019
382 , 0.099151, 0.097282, 0.095527, 0.093715
383 , 0.092129, 0.090544, 0.088958, 0.087429
384 , 0.086014, 0.084598, 0.083239, 0.081880
385 , 0.080634, 0.079388, 0.078143, 0.077010
386 , 0.075878, 0.074745, 0.073669, 0.072593
387 , 0.071574, 0.070612, 0.069649, 0.068686
388 , 0.067780, 0.066874, 0.066025, 0.065176
389 , 0.064326, 0.063533, 0.062684, 0.061948
390 , 0.061212, 0.060419, 0.059740, 0.059003
391 , 0.058324, 0.057644, 0.057022, 0.056342
392 , 0.055663, 0.055096, 0.054473, 0.053851
393 , 0.053284, 0.052718, 0.052152, 0.051585
394 , 0.051019, 0.050566, 0.050000, 0.049490
395 , 0.048981, 0.048528, 0.048018, 0.047508
396 , 0.047055, 0.046602, 0.046149, 0.045696
397 , 0.045300, 0.044904, 0.044451, 0.044054
398 , 0.043658, 0.043205, 0.042865, 0.042469
399 , 0.042072, 0.041733, 0.041336, 0.040997
400 , 0.040657, 0.040260, 0.039921, 0.039581
401 , 0.039241, 0.038958, 0.038618, 0.038335
402 , 0.037995, 0.037656, 0.037373, 0.037089
403 , 0.036806, 0.036467, 0.036183, 0.035900
404 , 0.035617, 0.035334, 0.035108, 0.034824
405 , 0.034541, 0.034315, 0.034032, 0.033805
406 , 0.033522, 0.033296, 0.033069, 0.032786
407 , 0.032559, 0.032333, 0.032106, 0.031880
408 , 0.031653, 0.031427, 0.031200, 0.030974
409 , 0.030804, 0.030578, 0.030351, 0.030125
410 , 0.029955, 0.029785, 0.029558, 0.029332
411 , 0.029162, 0.028992, 0.028766, 0.028596
412 , 0.028426, 0.028199, 0.028086, 0.027860
413 , 0.027746, 0.027633, 0.027463, 0.027293
414 , 0.027180, 0.027067, 0.026954, 0.026954
415 , 0.026840, 0.026727, 0.026727, 0.026614
416 , 0.026614, 0.026614, 0.026557, 0.026501
417 , 0.026501, 0.026501, 0.026501, 0.026501
418 , 0.026501, 0.026501, 0.026501, 0.026387
419 , 0.026387, 0.026387, 0.026387, 0.026387
420 , 0.026387, 0.026387, 0.026387, 0.026387
421 , 0.026387, 0.026387, 0.026387, 0.026387
422 , 0.026387, 0.026274, 0.026274, 0.026274
423 , 0.026274, 0.026274, 0.026274, 0.026274
424 , 0.026274, 0.026274, 0.026274, 0.026274
425 , 0.026274, 0.026274, 0.026274, 0.026161 };
426
427 Float_t xtalk[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000
428 , 0.000000, 0.000000, 0.000000, 0.000113
429 , 0.000793, 0.003058, 0.007305, 0.013194
430 , 0.019706, 0.025821, 0.030634, 0.033465
431 , 0.034145, 0.032729, 0.029615, 0.025198
432 , 0.019989, 0.014496, 0.009003, 0.003964
433 , -0.000510, -0.004190, -0.007191, -0.009400
434 , -0.010872, -0.011835, -0.012288, -0.012288
435 , -0.012005, -0.011495, -0.010872, -0.010136
436 , -0.009343, -0.008607, -0.007871, -0.007191
437 , -0.006512, -0.005946, -0.005379, -0.004926
438 , -0.004473, -0.004077, -0.003737, -0.003398
439 , -0.003114, -0.002831, -0.002605, -0.002378
440 , -0.002208, -0.002039, -0.001869, -0.001699
441 , -0.001585, -0.001472, -0.001359, -0.001246
442 , -0.001132, -0.001019, -0.001019, -0.000906
443 , -0.000906, -0.000793, -0.000793, -0.000680
444 , -0.000680, -0.000680, -0.000566, -0.000566
445 , -0.000566, -0.000566, -0.000453, -0.000453
446 , -0.000453, -0.000453, -0.000453, -0.000453
447 , -0.000340, -0.000340, -0.000340, -0.000340
448 , -0.000340, -0.000340, -0.000340, -0.000340
449 , -0.000340, -0.000340, -0.000340, -0.000340
450 , -0.000340, -0.000227, -0.000227, -0.000227
451 , -0.000227, -0.000227, -0.000227, -0.000227
452 , -0.000227, -0.000227, -0.000227, -0.000227
453 , -0.000227, -0.000227, -0.000227, -0.000227
454 , -0.000227, -0.000227, -0.000227, -0.000227
455 , -0.000227, -0.000227, -0.000227, -0.000227
456 , -0.000227, -0.000227, -0.000227, -0.000227
457 , -0.000227, -0.000227, -0.000227, -0.000227
458 , -0.000227, -0.000227, -0.000227, -0.000227
459 , -0.000227, -0.000227, -0.000227, -0.000113
460 , -0.000113, -0.000113, -0.000113, -0.000113
461 , -0.000113, -0.000113, -0.000113, -0.000113
462 , -0.000113, -0.000113, -0.000113, -0.000113
463 , -0.000113, -0.000113, -0.000113, -0.000113
464 , -0.000113, -0.000113, -0.000113, -0.000113
465 , -0.000113, -0.000113, -0.000113, -0.000113
466 , -0.000113, -0.000113, -0.000113, -0.000113
467 , -0.000113, -0.000113, -0.000113, -0.000113
468 , -0.000113, -0.000113, -0.000113, -0.000113
469 , -0.000113, -0.000113, -0.000113, -0.000113
470 , -0.000113, -0.000113, -0.000113, -0.000113
471 , -0.000113, -0.000113, -0.000113, -0.000113
472 , -0.000113, -0.000113, -0.000113, -0.000113
473 , -0.000113, -0.000113, -0.000113, -0.000113
474 , -0.000113, -0.000113, -0.000113, -0.000113
475 , -0.000113, -0.000113, -0.000113, -0.000113
476 , -0.000113, -0.000113, -0.000113, -0.000113
477 , -0.000113, -0.000113, -0.000113, -0.000113
478 , -0.000113, -0.000113, -0.000113, -0.000113
479 , -0.000113, -0.000113, -0.000113, 0.000000
480 , 0.000000, 0.000000, 0.000000, 0.000000
481 , 0.000000, 0.000000, 0.000000, 0.000000
482 , 0.000000, 0.000000, 0.000000, 0.000000
483 , 0.000000, 0.000000, 0.000000, 0.000000
484 , 0.000000, 0.000000, 0.000000, 0.000000
485 , 0.000000, 0.000000, 0.000000, 0.000000
486 , 0.000000, 0.000000, 0.000000, 0.000000
487 , 0.000000, 0.000000, 0.000000, 0.000000
488 , 0.000000, 0.000000, 0.000000, 0.000000
489 , 0.000000, 0.000000, 0.000000, 0.000000 };
490
491 // increase CrossTalk to measurements
492 for (Int_t ipasa = 0; ipasa < kNpasa; ipasa++) {
493 xtalk[ipasa] *= 1.75;
494 }
495
496 if (fTRFsmp) delete [] fTRFsmp;
497 fTRFsmp = new Float_t[fTRFbin];
498 if (fCTsmp) delete [] fCTsmp;
499 fCTsmp = new Float_t[fTRFbin];
500
501 Float_t loTRF = TMath::Max(fTRFlo, time[0]);
502 Float_t hiTRF = TMath::Min(fTRFhi, time[kNpasa-1]);
503 Float_t binWidth = (hiTRF - loTRF) / ((Float_t) fTRFbin);
504
505 // Take the linear interpolation
506 for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
507
508 Float_t bin = (((Float_t) iBin) + 0.5) * binWidth + loTRF;
509 ipos1 = ipos2 = 0;
510 diff = 0;
511 do {
512 diff = bin - time[ipos2++];
513 } while (diff > 0);
514 ipos2--;
515 if (ipos2 >= kNpasa) ipos2 = kNpasa - 1;
516 ipos1 = ipos2 - 1;
517
518 fTRFsmp[iBin] = signal[ipos2]
519 + diff * (signal[ipos2] - signal[ipos1])
520 / ( time[ipos2] - time[ipos1]);
521
522 fCTsmp[iBin] = xtalk[ipos2]
523 + diff * (xtalk[ipos2] - xtalk[ipos1])
524 / ( time[ipos2] - time[ipos1]);
525
526 }
527
528}
529
530//_____________________________________________________________________________
531Double_t AliTRDSimParam::TimeResponse(Double_t time) const
532{
533 //
534 // Applies the preamp shaper time response
535 //
536
537 Int_t iBin = ((Int_t) ((time) / fTRFwid));
538 //Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
539 if ((iBin >= 0) && (iBin < fTRFbin)) {
540 return fTRFsmp[iBin];
541 }
542 else {
543 return 0.0;
544 }
545
546}
547
548//_____________________________________________________________________________
549Double_t AliTRDSimParam::CrossTalk(Double_t time) const
550{
551 //
552 // Applies the pad-pad capacitive cross talk
553 //
554
555 Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
556 if ((iBin >= 0) && (iBin < fTRFbin)) {
557 return fCTsmp[iBin];
558 }
559 else {
560 return 0.0;
561 }
562
563}
564