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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 | ||
4d18a639 | 18 | //////////////////////////////////////////////////////////////////////////// |
19 | // // | |
20 | // Class containing constant simulation parameters // | |
21 | // // | |
22 | // Request an instance with AliTRDSimParam::Instance() // | |
23 | // Then request the needed values // | |
24 | // // | |
25 | //////////////////////////////////////////////////////////////////////////// | |
3551db50 | 26 | |
27 | #include <TMath.h> | |
28 | ||
29 | #include "AliRun.h" | |
30 | ||
31 | #include "AliTRDSimParam.h" | |
a076fc2f | 32 | #include "AliTRDCommonParam.h" |
3551db50 | 33 | |
34 | ClassImp(AliTRDSimParam) | |
35 | ||
4d18a639 | 36 | AliTRDSimParam *AliTRDSimParam::fgInstance = 0; |
37 | Bool_t AliTRDSimParam::fgTerminated = kFALSE; | |
3551db50 | 38 | |
39 | //_ singleton implementation __________________________________________________ | |
40 | AliTRDSimParam* AliTRDSimParam::Instance() | |
41 | { | |
42 | // | |
43 | // Singleton implementation | |
44 | // Returns an instance of this class, it is created if neccessary | |
45 | // | |
46 | ||
4d18a639 | 47 | if (fgTerminated != kFALSE) { |
3551db50 | 48 | return 0; |
4d18a639 | 49 | } |
3551db50 | 50 | |
4d18a639 | 51 | if (fgInstance == 0) { |
3551db50 | 52 | fgInstance = new AliTRDSimParam(); |
4d18a639 | 53 | } |
54 | ||
3551db50 | 55 | return fgInstance; |
4d18a639 | 56 | |
3551db50 | 57 | } |
58 | ||
4d18a639 | 59 | //_ singleton implementation __________________________________________________ |
3551db50 | 60 | void AliTRDSimParam::Terminate() |
61 | { | |
62 | // | |
63 | // Singleton implementation | |
4d18a639 | 64 | // Deletes the instance of this class and sets the terminated flag, |
65 | // instances cannot be requested anymore | |
3551db50 | 66 | // This function can be called several times. |
67 | // | |
68 | ||
69 | fgTerminated = kTRUE; | |
70 | ||
4d18a639 | 71 | if (fgInstance != 0) { |
3551db50 | 72 | delete fgInstance; |
73 | fgInstance = 0; | |
74 | } | |
4d18a639 | 75 | |
3551db50 | 76 | } |
77 | ||
78 | //_____________________________________________________________________________ | |
79 | AliTRDSimParam::AliTRDSimParam() | |
4d18a639 | 80 | :TObject() |
81 | ,fGasGain(0.0) | |
82 | ,fNoise(0.0) | |
83 | ,fChipGain(0.0) | |
84 | ,fADCoutRange(0.0) | |
85 | ,fADCinRange(0.0) | |
4d18a639 | 86 | ,fADCbaseline(0) |
87 | ,fDiffusionOn(kFALSE) | |
88 | ,fElAttachOn(kFALSE) | |
89 | ,fElAttachProp(0.0) | |
90 | ,fTRFOn(kFALSE) | |
91 | ,fTRFsmp(0) | |
92 | ,fTRFbin(0) | |
93 | ,fTRFlo(0.0) | |
94 | ,fTRFhi(0.0) | |
95 | ,fTRFwid(0.0) | |
96 | ,fCTOn(kFALSE) | |
97 | ,fCTsmp(0) | |
4d18a639 | 98 | ,fPadCoupling(0.0) |
99 | ,fTimeCoupling(0.0) | |
100 | ,fTimeStructOn(kFALSE) | |
101 | ,fPRFOn(kFALSE) | |
3551db50 | 102 | { |
103 | // | |
4d18a639 | 104 | // Default constructor |
3551db50 | 105 | // |
106 | ||
3551db50 | 107 | Init(); |
4d18a639 | 108 | |
3551db50 | 109 | } |
110 | ||
111 | //_____________________________________________________________________________ | |
112 | void AliTRDSimParam::Init() | |
113 | { | |
114 | // | |
4d18a639 | 115 | // Default initializiation |
3551db50 | 116 | // |
117 | ||
118 | // The default parameter for the digitization | |
b43a3e17 | 119 | fGasGain = 4000.0; |
120 | fChipGain = 12.4; | |
60243ea4 | 121 | fNoise = 1250.0; |
b43a3e17 | 122 | fADCoutRange = 1023.0; // 10-bit ADC |
123 | fADCinRange = 2000.0; // 2V input range | |
c2798013 | 124 | // Go back to 0 again, just to be consistent with reconstruction |
ecf39416 | 125 | fADCbaseline = 0; |
c2798013 | 126 | //fADCbaseline = 10; |
3551db50 | 127 | |
128 | // Diffusion on | |
b43a3e17 | 129 | fDiffusionOn = kTRUE; |
3551db50 | 130 | |
131 | // Propability for electron attachment | |
b43a3e17 | 132 | fElAttachOn = kFALSE; |
133 | fElAttachProp = 0.0; | |
3551db50 | 134 | |
135 | // The time response function | |
b43a3e17 | 136 | fTRFOn = kTRUE; |
3551db50 | 137 | |
138 | // The cross talk | |
b43a3e17 | 139 | fCTOn = kTRUE; |
3551db50 | 140 | |
3551db50 | 141 | // The pad coupling factor |
4d18a639 | 142 | // Use 0.46, instead of the theroetical value 0.3, since it reproduces better |
143 | // the test beam data, even tough it is not understood why. | |
b43a3e17 | 144 | fPadCoupling = 0.46; |
3551db50 | 145 | |
146 | // The time coupling factor (same number as for the TPC) | |
b43a3e17 | 147 | fTimeCoupling = 0.4; |
3551db50 | 148 | |
3551db50 | 149 | // Use drift time maps |
b43a3e17 | 150 | fTimeStructOn = kTRUE; |
3551db50 | 151 | |
cc7cef99 | 152 | // The pad response function |
b43a3e17 | 153 | fPRFOn = kTRUE; |
cc7cef99 | 154 | |
3551db50 | 155 | ReInit(); |
4d18a639 | 156 | |
ab0a4106 | 157 | } |
3551db50 | 158 | |
159 | //_____________________________________________________________________________ | |
160 | AliTRDSimParam::~AliTRDSimParam() | |
161 | { | |
162 | // | |
4d18a639 | 163 | // Destructor |
3551db50 | 164 | // |
165 | ||
166 | if (fTRFsmp) { | |
167 | delete [] fTRFsmp; | |
168 | fTRFsmp = 0; | |
169 | } | |
170 | ||
171 | if (fCTsmp) { | |
172 | delete [] fCTsmp; | |
173 | fCTsmp = 0; | |
174 | } | |
4d18a639 | 175 | |
ab0a4106 | 176 | } |
3551db50 | 177 | |
178 | //_____________________________________________________________________________ | |
4d18a639 | 179 | AliTRDSimParam::AliTRDSimParam(const AliTRDSimParam &p) |
180 | :TObject(p) | |
181 | ,fGasGain(p.fGasGain) | |
182 | ,fNoise(p.fNoise) | |
183 | ,fChipGain(p.fChipGain) | |
184 | ,fADCoutRange(p.fADCoutRange) | |
185 | ,fADCinRange(p.fADCinRange) | |
4d18a639 | 186 | ,fADCbaseline(p.fADCbaseline) |
187 | ,fDiffusionOn(p.fDiffusionOn) | |
188 | ,fElAttachOn(p.fElAttachOn) | |
189 | ,fElAttachProp(p.fElAttachProp) | |
190 | ,fTRFOn(p.fTRFOn) | |
191 | ,fTRFsmp(0) | |
192 | ,fTRFbin(p.fTRFbin) | |
193 | ,fTRFlo(p.fTRFlo) | |
194 | ,fTRFhi(p.fTRFhi) | |
195 | ,fTRFwid(p.fTRFwid) | |
196 | ,fCTOn(p.fCTOn) | |
197 | ,fCTsmp(0) | |
4d18a639 | 198 | ,fPadCoupling(p.fPadCoupling) |
199 | ,fTimeCoupling(p.fTimeCoupling) | |
200 | ,fTimeStructOn(p.fTimeStructOn) | |
201 | ,fPRFOn(p.fPRFOn) | |
3551db50 | 202 | { |
203 | // | |
4d18a639 | 204 | // Copy constructor |
3551db50 | 205 | // |
206 | ||
4d18a639 | 207 | Int_t iBin = 0; |
208 | ||
209 | if (((AliTRDSimParam &) p).fTRFsmp) { | |
210 | delete [] ((AliTRDSimParam &) p).fTRFsmp; | |
211 | } | |
212 | ((AliTRDSimParam &) p).fTRFsmp = new Float_t[fTRFbin]; | |
213 | for (iBin = 0; iBin < fTRFbin; iBin++) { | |
214 | ((AliTRDSimParam &) p).fTRFsmp[iBin] = fTRFsmp[iBin]; | |
215 | } | |
216 | ||
217 | if (((AliTRDSimParam &) p).fCTsmp) { | |
218 | delete [] ((AliTRDSimParam &) p).fCTsmp; | |
219 | } | |
220 | ((AliTRDSimParam &) p).fCTsmp = new Float_t[fTRFbin]; | |
221 | for (iBin = 0; iBin < fTRFbin; iBin++) { | |
222 | ((AliTRDSimParam &) p).fCTsmp[iBin] = fCTsmp[iBin]; | |
223 | } | |
3551db50 | 224 | |
4d18a639 | 225 | } |
3551db50 | 226 | |
227 | //_____________________________________________________________________________ | |
228 | AliTRDSimParam &AliTRDSimParam::operator=(const AliTRDSimParam &p) | |
229 | { | |
230 | // | |
231 | // Assignment operator | |
232 | // | |
233 | ||
b43a3e17 | 234 | if (this != &p) { |
235 | ((AliTRDSimParam &) p).Copy(*this); | |
236 | } | |
4d18a639 | 237 | |
3551db50 | 238 | return *this; |
4d18a639 | 239 | |
3551db50 | 240 | } |
241 | ||
242 | //_____________________________________________________________________________ | |
243 | void AliTRDSimParam::Copy(TObject &p) const | |
244 | { | |
245 | // | |
246 | // Copy function | |
247 | // | |
248 | ||
b43a3e17 | 249 | AliTRDSimParam *target = dynamic_cast<AliTRDSimParam *> (&p); |
4d18a639 | 250 | if (!target) { |
3551db50 | 251 | return; |
4d18a639 | 252 | } |
3551db50 | 253 | |
254 | target->fGasGain = fGasGain; | |
3551db50 | 255 | target->fNoise = fNoise; |
4d18a639 | 256 | target->fChipGain = fChipGain; |
3551db50 | 257 | target->fADCoutRange = fADCoutRange; |
258 | target->fADCinRange = fADCinRange; | |
3551db50 | 259 | target->fADCbaseline = fADCbaseline; |
3551db50 | 260 | target->fDiffusionOn = fDiffusionOn; |
3551db50 | 261 | target->fElAttachOn = fElAttachOn; |
262 | target->fElAttachProp = fElAttachProp; | |
3551db50 | 263 | target->fTRFOn = fTRFOn; |
3551db50 | 264 | target->fTRFbin = fTRFbin; |
265 | target->fTRFlo = fTRFlo; | |
266 | target->fTRFhi = fTRFhi; | |
267 | target->fTRFwid = fTRFwid; | |
3551db50 | 268 | target->fCTOn = fCTOn; |
4d18a639 | 269 | target->fPadCoupling = fPadCoupling; |
270 | target->fTimeCoupling = fTimeCoupling; | |
271 | target->fPRFOn = fPRFOn; | |
272 | ||
273 | if (target->fTRFsmp) { | |
274 | delete[] target->fTRFsmp; | |
275 | } | |
276 | target->fTRFsmp = new Float_t[fTRFbin]; | |
277 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { | |
278 | target->fTRFsmp[iBin] = fTRFsmp[iBin]; | |
279 | } | |
280 | ||
281 | if (target->fCTsmp) { | |
3551db50 | 282 | delete[] target->fCTsmp; |
4d18a639 | 283 | } |
3551db50 | 284 | target->fCTsmp = new Float_t[fTRFbin]; |
285 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { | |
286 | target->fCTsmp[iBin] = fCTsmp[iBin]; | |
287 | } | |
288 | ||
3551db50 | 289 | } |
290 | ||
291 | //_____________________________________________________________________________ | |
292 | void AliTRDSimParam::ReInit() | |
293 | { | |
294 | // | |
295 | // Reinitializes the parameter class after a change | |
296 | // | |
297 | ||
a076fc2f | 298 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
f2979d08 | 299 | // The range and the binwidth for the sampled TRF |
300 | fTRFbin = 200; | |
301 | // Start 0.2 mus before the signal | |
302 | fTRFlo = -0.4; | |
303 | // End the maximum drift time after the signal | |
304 | fTRFhi = 3.58; | |
0a17cc30 | 305 | // Standard gas gain |
306 | fGasGain = 4000.0; | |
f2979d08 | 307 | } |
a076fc2f | 308 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
f2979d08 | 309 | // The range and the binwidth for the sampled TRF |
0a17cc30 | 310 | fTRFbin = 50; |
f2979d08 | 311 | // Start 0.2 mus before the signal |
0a17cc30 | 312 | fTRFlo = 0.02; |
f2979d08 | 313 | // End the maximum drift time after the signal |
0a17cc30 | 314 | fTRFhi = 1.98; |
315 | // Higher gas gain | |
316 | fGasGain = 8000.0; | |
f2979d08 | 317 | } |
318 | else { | |
319 | AliFatal("Not a valid gas mixture!"); | |
320 | exit(1); | |
321 | } | |
3551db50 | 322 | fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin); |
323 | ||
324 | // Create the sampled TRF | |
325 | SampleTRF(); | |
3551db50 | 326 | |
4d18a639 | 327 | } |
915f999b | 328 | |
3551db50 | 329 | //_____________________________________________________________________________ |
330 | void AliTRDSimParam::SampleTRF() | |
331 | { | |
332 | // | |
915f999b | 333 | // Samples the new time response function. |
3551db50 | 334 | // |
335 | ||
f2979d08 | 336 | Int_t ipasa = 0; |
915f999b | 337 | |
f2979d08 | 338 | // Xenon |
339 | // From Antons measurements with Fe55 source, adjusted by C. Lippmann. | |
340 | // time bins are -0.4, -0.38, -0.36, ...., 3.54, 3.56, 3.58 microseconds | |
341 | const Int_t kNpasa = 200; // kNpasa should be equal to fTRFbin! | |
342 | Float_t xtalk[kNpasa]; | |
343 | Float_t signal[kNpasa] = { 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000 | |
344 | , 0.0002, 0.0007, 0.0026, 0.0089, 0.0253, 0.0612, 0.1319 | |
345 | , 0.2416, 0.3913, 0.5609, 0.7295, 0.8662, 0.9581, 1.0000 | |
346 | , 0.9990, 0.9611, 0.8995, 0.8269, 0.7495, 0.6714, 0.5987 | |
347 | , 0.5334, 0.4756, 0.4249, 0.3811, 0.3433, 0.3110, 0.2837 | |
348 | , 0.2607, 0.2409, 0.2243, 0.2099, 0.1974, 0.1868, 0.1776 | |
349 | , 0.1695, 0.1627, 0.1566, 0.1509, 0.1457, 0.1407, 0.1362 | |
350 | , 0.1317, 0.1274, 0.1233, 0.1196, 0.1162, 0.1131, 0.1102 | |
351 | , 0.1075, 0.1051, 0.1026, 0.1004, 0.0979, 0.0956, 0.0934 | |
352 | , 0.0912, 0.0892, 0.0875, 0.0858, 0.0843, 0.0829, 0.0815 | |
353 | , 0.0799, 0.0786, 0.0772, 0.0757, 0.0741, 0.0729, 0.0718 | |
354 | , 0.0706, 0.0692, 0.0680, 0.0669, 0.0655, 0.0643, 0.0630 | |
355 | , 0.0618, 0.0607, 0.0596, 0.0587, 0.0576, 0.0568, 0.0558 | |
356 | , 0.0550, 0.0541, 0.0531, 0.0522, 0.0513, 0.0505, 0.0497 | |
357 | , 0.0490, 0.0484, 0.0474, 0.0465, 0.0457, 0.0449, 0.0441 | |
358 | , 0.0433, 0.0425, 0.0417, 0.0410, 0.0402, 0.0395, 0.0388 | |
359 | , 0.0381, 0.0374, 0.0368, 0.0361, 0.0354, 0.0348, 0.0342 | |
360 | , 0.0336, 0.0330, 0.0324, 0.0318, 0.0312, 0.0306, 0.0301 | |
361 | , 0.0296, 0.0290, 0.0285, 0.0280, 0.0275, 0.0270, 0.0265 | |
362 | , 0.0260, 0.0256, 0.0251, 0.0246, 0.0242, 0.0238, 0.0233 | |
363 | , 0.0229, 0.0225, 0.0221, 0.0217, 0.0213, 0.0209, 0.0206 | |
364 | , 0.0202, 0.0198, 0.0195, 0.0191, 0.0188, 0.0184, 0.0181 | |
365 | , 0.0178, 0.0175, 0.0171, 0.0168, 0.0165, 0.0162, 0.0159 | |
366 | , 0.0157, 0.0154, 0.0151, 0.0148, 0.0146, 0.0143, 0.0140 | |
367 | , 0.0138, 0.0135, 0.0133, 0.0131, 0.0128, 0.0126, 0.0124 | |
368 | , 0.0121, 0.0119, 0.0120, 0.0115, 0.0113, 0.0111, 0.0109 | |
369 | , 0.0107, 0.0105, 0.0103, 0.0101, 0.0100, 0.0098, 0.0096 | |
370 | , 0.0094, 0.0092, 0.0091, 0.0089, 0.0088, 0.0086, 0.0084 | |
371 | , 0.0083, 0.0081, 0.0080, 0.0078 }; | |
372 | signal[0] = 0.0; | |
373 | signal[1] = 0.0; | |
374 | signal[2] = 0.0; | |
4d18a639 | 375 | // With undershoot, positive peak corresponds to ~3% of the main signal: |
f2979d08 | 376 | for (ipasa = 3; ipasa < kNpasa; ipasa++) { |
4d18a639 | 377 | xtalk[ipasa] = 0.2 * (signal[ipasa-2] - signal[ipasa-3]); |
3551db50 | 378 | } |
4d18a639 | 379 | xtalk[0] = 0.0; |
380 | xtalk[1] = 0.0; | |
381 | xtalk[2] = 0.0; | |
915f999b | 382 | |
f2979d08 | 383 | // Argon |
384 | // Ar measurement with Fe55 source by Anton | |
385 | // time bins are 0.02, 0.06, 0.10, ...., 1.90, 1.94, 1.98 microseconds | |
386 | const Int_t kNpasaAr = 50; | |
387 | Float_t xtalkAr[kNpasaAr]; | |
388 | Float_t signalAr[kNpasaAr] = { -0.01, 0.01, 0.00, 0.00, 0.01 | |
389 | , -0.01, 0.01, 2.15, 22.28, 55.53 | |
390 | , 68.52, 58.21, 40.92, 27.12, 18.49 | |
391 | , 13.42, 10.48, 8.67, 7.49, 6.55 | |
392 | , 5.71, 5.12, 4.63, 4.22, 3.81 | |
393 | , 3.48, 3.20, 2.94, 2.77, 2.63 | |
394 | , 2.50, 2.37, 2.23, 2.13, 2.03 | |
395 | , 1.91, 1.83, 1.75, 1.68, 1.63 | |
396 | , 1.56, 1.49, 1.50, 1.49, 1.29 | |
397 | , 1.19, 1.21, 1.21, 1.20, 1.10 }; | |
398 | // Normalization to maximum | |
93ff78d6 | 399 | for (ipasa = 0; ipasa < kNpasaAr; ipasa++) { |
f2979d08 | 400 | signalAr[ipasa] /= 68.52; |
401 | } | |
402 | signalAr[0] = 0.0; | |
403 | signalAr[1] = 0.0; | |
404 | signalAr[2] = 0.0; | |
405 | // With undershoot, positive peak corresponds to ~3% of the main signal: | |
93ff78d6 | 406 | for (ipasa = 3; ipasa < kNpasaAr; ipasa++) { |
f2979d08 | 407 | xtalkAr[ipasa] = 0.2 * (signalAr[ipasa-2] - signalAr[ipasa-3]); |
408 | } | |
409 | xtalkAr[0] = 0.0; | |
410 | xtalkAr[1] = 0.0; | |
411 | xtalkAr[2] = 0.0; | |
4d18a639 | 412 | |
413 | if (fTRFsmp) { | |
414 | delete [] fTRFsmp; | |
415 | } | |
3551db50 | 416 | fTRFsmp = new Float_t[fTRFbin]; |
4d18a639 | 417 | |
418 | if (fCTsmp) { | |
419 | delete [] fCTsmp; | |
420 | } | |
3551db50 | 421 | fCTsmp = new Float_t[fTRFbin]; |
422 | ||
a076fc2f | 423 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
0a17cc30 | 424 | if (fTRFbin != kNpasa) { |
425 | AliError("Array mismatch (xenon)\n\n"); | |
426 | } | |
427 | } | |
a076fc2f | 428 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
0a17cc30 | 429 | if (fTRFbin != kNpasaAr) { |
430 | AliError("Array mismatch (argon)\n\n"); | |
431 | } | |
432 | } | |
433 | ||
3551db50 | 434 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { |
a076fc2f | 435 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
f2979d08 | 436 | fTRFsmp[iBin] = signal[iBin]; |
437 | fCTsmp[iBin] = xtalk[iBin]; | |
438 | } | |
a076fc2f | 439 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
f2979d08 | 440 | fTRFsmp[iBin] = signalAr[iBin]; |
441 | fCTsmp[iBin] = xtalkAr[iBin]; | |
442 | } | |
3551db50 | 443 | } |
444 | ||
445 | } | |
446 | ||
447 | //_____________________________________________________________________________ | |
448 | Double_t AliTRDSimParam::TimeResponse(Double_t time) const | |
449 | { | |
450 | // | |
451 | // Applies the preamp shaper time response | |
915f999b | 452 | // (We assume a signal rise time of 0.2us = fTRFlo/2. |
3551db50 | 453 | // |
454 | ||
a076fc2f | 455 | Double_t rt = (time - .5*fTRFlo) / fTRFwid; |
456 | Int_t iBin = (Int_t) rt; | |
457 | Double_t dt = rt - iBin; | |
7093fb4f | 458 | if ((iBin >= 0) && (iBin+1 < fTRFbin)) { |
459 | return fTRFsmp[iBin] + (fTRFsmp[iBin+1] - fTRFsmp[iBin])*dt; | |
a076fc2f | 460 | } |
461 | else { | |
462 | return 0.0; | |
463 | } | |
464 | ||
3551db50 | 465 | } |
466 | ||
467 | //_____________________________________________________________________________ | |
468 | Double_t AliTRDSimParam::CrossTalk(Double_t time) const | |
469 | { | |
470 | // | |
471 | // Applies the pad-pad capacitive cross talk | |
472 | // | |
473 | ||
a076fc2f | 474 | Double_t rt = (time - fTRFlo) / fTRFwid; |
475 | Int_t iBin = (Int_t) rt; | |
476 | Double_t dt = rt - iBin; | |
7093fb4f | 477 | if ((iBin >= 0) && (iBin+1 < fTRFbin)) { |
478 | return fCTsmp[iBin] + (fCTsmp[iBin+1] - fCTsmp[iBin])*dt; | |
a076fc2f | 479 | } |
480 | else { | |
481 | return 0.0; | |
482 | } | |
483 | ||
3551db50 | 484 | } |