]>
Commit | Line | Data |
---|---|---|
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 | |
a9151110 | 27 | #include <TMath.h> |
28 | ||
3551db50 | 29 | #include "AliRun.h" |
30 | ||
31 | #include "AliTRDSimParam.h" | |
a076fc2f | 32 | #include "AliTRDCommonParam.h" |
c93255fe | 33 | #include "AliLog.h" |
3551db50 | 34 | |
35 | ClassImp(AliTRDSimParam) | |
36 | ||
4d18a639 | 37 | AliTRDSimParam *AliTRDSimParam::fgInstance = 0; |
38 | Bool_t AliTRDSimParam::fgTerminated = kFALSE; | |
3551db50 | 39 | |
40 | //_ singleton implementation __________________________________________________ | |
41 | AliTRDSimParam* AliTRDSimParam::Instance() | |
42 | { | |
43 | // | |
44 | // Singleton implementation | |
45 | // Returns an instance of this class, it is created if neccessary | |
46 | // | |
47 | ||
4d18a639 | 48 | if (fgTerminated != kFALSE) { |
3551db50 | 49 | return 0; |
4d18a639 | 50 | } |
3551db50 | 51 | |
4d18a639 | 52 | if (fgInstance == 0) { |
3551db50 | 53 | fgInstance = new AliTRDSimParam(); |
4d18a639 | 54 | } |
55 | ||
3551db50 | 56 | return fgInstance; |
4d18a639 | 57 | |
3551db50 | 58 | } |
59 | ||
4d18a639 | 60 | //_ singleton implementation __________________________________________________ |
3551db50 | 61 | void AliTRDSimParam::Terminate() |
62 | { | |
63 | // | |
64 | // Singleton implementation | |
4d18a639 | 65 | // Deletes the instance of this class and sets the terminated flag, |
66 | // instances cannot be requested anymore | |
3551db50 | 67 | // This function can be called several times. |
68 | // | |
69 | ||
70 | fgTerminated = kTRUE; | |
71 | ||
4d18a639 | 72 | if (fgInstance != 0) { |
3551db50 | 73 | delete fgInstance; |
74 | fgInstance = 0; | |
75 | } | |
4d18a639 | 76 | |
3551db50 | 77 | } |
78 | ||
79 | //_____________________________________________________________________________ | |
80 | AliTRDSimParam::AliTRDSimParam() | |
4d18a639 | 81 | :TObject() |
82 | ,fGasGain(0.0) | |
83 | ,fNoise(0.0) | |
84 | ,fChipGain(0.0) | |
85 | ,fADCoutRange(0.0) | |
86 | ,fADCinRange(0.0) | |
4d18a639 | 87 | ,fADCbaseline(0) |
88 | ,fDiffusionOn(kFALSE) | |
89 | ,fElAttachOn(kFALSE) | |
90 | ,fElAttachProp(0.0) | |
91 | ,fTRFOn(kFALSE) | |
92 | ,fTRFsmp(0) | |
93 | ,fTRFbin(0) | |
94 | ,fTRFlo(0.0) | |
95 | ,fTRFhi(0.0) | |
96 | ,fTRFwid(0.0) | |
97 | ,fCTOn(kFALSE) | |
98 | ,fCTsmp(0) | |
4d18a639 | 99 | ,fPadCoupling(0.0) |
100 | ,fTimeCoupling(0.0) | |
101 | ,fTimeStructOn(kFALSE) | |
102 | ,fPRFOn(kFALSE) | |
966f6939 | 103 | ,fNTimeBins(0) |
3551db50 | 104 | { |
105 | // | |
4d18a639 | 106 | // Default constructor |
3551db50 | 107 | // |
108 | ||
3551db50 | 109 | Init(); |
4d18a639 | 110 | |
3551db50 | 111 | } |
112 | ||
113 | //_____________________________________________________________________________ | |
114 | void AliTRDSimParam::Init() | |
115 | { | |
116 | // | |
4d18a639 | 117 | // Default initializiation |
3551db50 | 118 | // |
119 | ||
120 | // The default parameter for the digitization | |
b43a3e17 | 121 | fGasGain = 4000.0; |
122 | fChipGain = 12.4; | |
60243ea4 | 123 | fNoise = 1250.0; |
b43a3e17 | 124 | fADCoutRange = 1023.0; // 10-bit ADC |
125 | fADCinRange = 2000.0; // 2V input range | |
af3880b4 | 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 | |
966f6939 | 155 | // The number of time bins |
5896bc23 | 156 | fNTimeBins = 30; |
966f6939 | 157 | |
3551db50 | 158 | ReInit(); |
4d18a639 | 159 | |
ab0a4106 | 160 | } |
3551db50 | 161 | |
162 | //_____________________________________________________________________________ | |
163 | AliTRDSimParam::~AliTRDSimParam() | |
164 | { | |
165 | // | |
4d18a639 | 166 | // Destructor |
3551db50 | 167 | // |
168 | ||
169 | if (fTRFsmp) { | |
170 | delete [] fTRFsmp; | |
171 | fTRFsmp = 0; | |
172 | } | |
173 | ||
174 | if (fCTsmp) { | |
175 | delete [] fCTsmp; | |
176 | fCTsmp = 0; | |
177 | } | |
4d18a639 | 178 | |
ab0a4106 | 179 | } |
3551db50 | 180 | |
181 | //_____________________________________________________________________________ | |
4d18a639 | 182 | AliTRDSimParam::AliTRDSimParam(const AliTRDSimParam &p) |
183 | :TObject(p) | |
184 | ,fGasGain(p.fGasGain) | |
185 | ,fNoise(p.fNoise) | |
186 | ,fChipGain(p.fChipGain) | |
187 | ,fADCoutRange(p.fADCoutRange) | |
188 | ,fADCinRange(p.fADCinRange) | |
4d18a639 | 189 | ,fADCbaseline(p.fADCbaseline) |
190 | ,fDiffusionOn(p.fDiffusionOn) | |
191 | ,fElAttachOn(p.fElAttachOn) | |
192 | ,fElAttachProp(p.fElAttachProp) | |
193 | ,fTRFOn(p.fTRFOn) | |
194 | ,fTRFsmp(0) | |
195 | ,fTRFbin(p.fTRFbin) | |
196 | ,fTRFlo(p.fTRFlo) | |
197 | ,fTRFhi(p.fTRFhi) | |
198 | ,fTRFwid(p.fTRFwid) | |
199 | ,fCTOn(p.fCTOn) | |
200 | ,fCTsmp(0) | |
4d18a639 | 201 | ,fPadCoupling(p.fPadCoupling) |
202 | ,fTimeCoupling(p.fTimeCoupling) | |
203 | ,fTimeStructOn(p.fTimeStructOn) | |
204 | ,fPRFOn(p.fPRFOn) | |
966f6939 | 205 | ,fNTimeBins(p.fNTimeBins) |
3551db50 | 206 | { |
207 | // | |
4d18a639 | 208 | // Copy constructor |
3551db50 | 209 | // |
210 | ||
4d18a639 | 211 | Int_t iBin = 0; |
212 | ||
024c0422 | 213 | fTRFsmp = new Float_t[fTRFbin]; |
4d18a639 | 214 | for (iBin = 0; iBin < fTRFbin; iBin++) { |
024c0422 | 215 | fTRFsmp[iBin] = ((AliTRDSimParam &) p).fTRFsmp[iBin]; |
4d18a639 | 216 | } |
217 | ||
024c0422 | 218 | fCTsmp = new Float_t[fTRFbin]; |
4d18a639 | 219 | for (iBin = 0; iBin < fTRFbin; iBin++) { |
024c0422 | 220 | fCTsmp[iBin] = ((AliTRDSimParam &) p).fCTsmp[iBin]; |
4d18a639 | 221 | } |
3551db50 | 222 | |
4d18a639 | 223 | } |
3551db50 | 224 | |
225 | //_____________________________________________________________________________ | |
226 | AliTRDSimParam &AliTRDSimParam::operator=(const AliTRDSimParam &p) | |
227 | { | |
228 | // | |
229 | // Assignment operator | |
230 | // | |
231 | ||
b43a3e17 | 232 | if (this != &p) { |
233 | ((AliTRDSimParam &) p).Copy(*this); | |
234 | } | |
4d18a639 | 235 | |
3551db50 | 236 | return *this; |
4d18a639 | 237 | |
3551db50 | 238 | } |
239 | ||
240 | //_____________________________________________________________________________ | |
241 | void AliTRDSimParam::Copy(TObject &p) const | |
242 | { | |
243 | // | |
244 | // Copy function | |
245 | // | |
246 | ||
b43a3e17 | 247 | AliTRDSimParam *target = dynamic_cast<AliTRDSimParam *> (&p); |
4d18a639 | 248 | if (!target) { |
3551db50 | 249 | return; |
4d18a639 | 250 | } |
3551db50 | 251 | |
252 | target->fGasGain = fGasGain; | |
3551db50 | 253 | target->fNoise = fNoise; |
4d18a639 | 254 | target->fChipGain = fChipGain; |
3551db50 | 255 | target->fADCoutRange = fADCoutRange; |
256 | target->fADCinRange = fADCinRange; | |
3551db50 | 257 | target->fADCbaseline = fADCbaseline; |
3551db50 | 258 | target->fDiffusionOn = fDiffusionOn; |
3551db50 | 259 | target->fElAttachOn = fElAttachOn; |
260 | target->fElAttachProp = fElAttachProp; | |
3551db50 | 261 | target->fTRFOn = fTRFOn; |
3551db50 | 262 | target->fTRFbin = fTRFbin; |
263 | target->fTRFlo = fTRFlo; | |
264 | target->fTRFhi = fTRFhi; | |
265 | target->fTRFwid = fTRFwid; | |
3551db50 | 266 | target->fCTOn = fCTOn; |
4d18a639 | 267 | target->fPadCoupling = fPadCoupling; |
268 | target->fTimeCoupling = fTimeCoupling; | |
269 | target->fPRFOn = fPRFOn; | |
966f6939 | 270 | target->fNTimeBins = fNTimeBins; |
4d18a639 | 271 | |
272 | if (target->fTRFsmp) { | |
273 | delete[] target->fTRFsmp; | |
274 | } | |
275 | target->fTRFsmp = new Float_t[fTRFbin]; | |
276 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { | |
277 | target->fTRFsmp[iBin] = fTRFsmp[iBin]; | |
278 | } | |
279 | ||
280 | if (target->fCTsmp) { | |
3551db50 | 281 | delete[] target->fCTsmp; |
4d18a639 | 282 | } |
3551db50 | 283 | target->fCTsmp = new Float_t[fTRFbin]; |
284 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { | |
285 | target->fCTsmp[iBin] = fCTsmp[iBin]; | |
286 | } | |
287 | ||
3551db50 | 288 | } |
289 | ||
290 | //_____________________________________________________________________________ | |
291 | void AliTRDSimParam::ReInit() | |
292 | { | |
293 | // | |
294 | // Reinitializes the parameter class after a change | |
295 | // | |
296 | ||
a076fc2f | 297 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
f2979d08 | 298 | // The range and the binwidth for the sampled TRF |
299 | fTRFbin = 200; | |
300 | // Start 0.2 mus before the signal | |
301 | fTRFlo = -0.4; | |
302 | // End the maximum drift time after the signal | |
303 | fTRFhi = 3.58; | |
0a17cc30 | 304 | // Standard gas gain |
305 | fGasGain = 4000.0; | |
f2979d08 | 306 | } |
a076fc2f | 307 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
f2979d08 | 308 | // The range and the binwidth for the sampled TRF |
0a17cc30 | 309 | fTRFbin = 50; |
f2979d08 | 310 | // Start 0.2 mus before the signal |
0a17cc30 | 311 | fTRFlo = 0.02; |
f2979d08 | 312 | // End the maximum drift time after the signal |
0a17cc30 | 313 | fTRFhi = 1.98; |
314 | // Higher gas gain | |
315 | fGasGain = 8000.0; | |
f2979d08 | 316 | } |
317 | else { | |
318 | AliFatal("Not a valid gas mixture!"); | |
319 | exit(1); | |
320 | } | |
3551db50 | 321 | fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin); |
322 | ||
323 | // Create the sampled TRF | |
324 | SampleTRF(); | |
3551db50 | 325 | |
4d18a639 | 326 | } |
915f999b | 327 | |
3551db50 | 328 | //_____________________________________________________________________________ |
329 | void AliTRDSimParam::SampleTRF() | |
330 | { | |
331 | // | |
915f999b | 332 | // Samples the new time response function. |
3551db50 | 333 | // |
334 | ||
f2979d08 | 335 | Int_t ipasa = 0; |
915f999b | 336 | |
f2979d08 | 337 | // Xenon |
338 | // From Antons measurements with Fe55 source, adjusted by C. Lippmann. | |
339 | // time bins are -0.4, -0.38, -0.36, ...., 3.54, 3.56, 3.58 microseconds | |
340 | const Int_t kNpasa = 200; // kNpasa should be equal to fTRFbin! | |
341 | Float_t xtalk[kNpasa]; | |
342 | Float_t signal[kNpasa] = { 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000 | |
343 | , 0.0002, 0.0007, 0.0026, 0.0089, 0.0253, 0.0612, 0.1319 | |
344 | , 0.2416, 0.3913, 0.5609, 0.7295, 0.8662, 0.9581, 1.0000 | |
345 | , 0.9990, 0.9611, 0.8995, 0.8269, 0.7495, 0.6714, 0.5987 | |
346 | , 0.5334, 0.4756, 0.4249, 0.3811, 0.3433, 0.3110, 0.2837 | |
347 | , 0.2607, 0.2409, 0.2243, 0.2099, 0.1974, 0.1868, 0.1776 | |
348 | , 0.1695, 0.1627, 0.1566, 0.1509, 0.1457, 0.1407, 0.1362 | |
349 | , 0.1317, 0.1274, 0.1233, 0.1196, 0.1162, 0.1131, 0.1102 | |
350 | , 0.1075, 0.1051, 0.1026, 0.1004, 0.0979, 0.0956, 0.0934 | |
351 | , 0.0912, 0.0892, 0.0875, 0.0858, 0.0843, 0.0829, 0.0815 | |
352 | , 0.0799, 0.0786, 0.0772, 0.0757, 0.0741, 0.0729, 0.0718 | |
353 | , 0.0706, 0.0692, 0.0680, 0.0669, 0.0655, 0.0643, 0.0630 | |
354 | , 0.0618, 0.0607, 0.0596, 0.0587, 0.0576, 0.0568, 0.0558 | |
355 | , 0.0550, 0.0541, 0.0531, 0.0522, 0.0513, 0.0505, 0.0497 | |
356 | , 0.0490, 0.0484, 0.0474, 0.0465, 0.0457, 0.0449, 0.0441 | |
357 | , 0.0433, 0.0425, 0.0417, 0.0410, 0.0402, 0.0395, 0.0388 | |
358 | , 0.0381, 0.0374, 0.0368, 0.0361, 0.0354, 0.0348, 0.0342 | |
359 | , 0.0336, 0.0330, 0.0324, 0.0318, 0.0312, 0.0306, 0.0301 | |
360 | , 0.0296, 0.0290, 0.0285, 0.0280, 0.0275, 0.0270, 0.0265 | |
361 | , 0.0260, 0.0256, 0.0251, 0.0246, 0.0242, 0.0238, 0.0233 | |
362 | , 0.0229, 0.0225, 0.0221, 0.0217, 0.0213, 0.0209, 0.0206 | |
363 | , 0.0202, 0.0198, 0.0195, 0.0191, 0.0188, 0.0184, 0.0181 | |
364 | , 0.0178, 0.0175, 0.0171, 0.0168, 0.0165, 0.0162, 0.0159 | |
365 | , 0.0157, 0.0154, 0.0151, 0.0148, 0.0146, 0.0143, 0.0140 | |
366 | , 0.0138, 0.0135, 0.0133, 0.0131, 0.0128, 0.0126, 0.0124 | |
367 | , 0.0121, 0.0119, 0.0120, 0.0115, 0.0113, 0.0111, 0.0109 | |
368 | , 0.0107, 0.0105, 0.0103, 0.0101, 0.0100, 0.0098, 0.0096 | |
369 | , 0.0094, 0.0092, 0.0091, 0.0089, 0.0088, 0.0086, 0.0084 | |
370 | , 0.0083, 0.0081, 0.0080, 0.0078 }; | |
371 | signal[0] = 0.0; | |
372 | signal[1] = 0.0; | |
373 | signal[2] = 0.0; | |
4d18a639 | 374 | // With undershoot, positive peak corresponds to ~3% of the main signal: |
f2979d08 | 375 | for (ipasa = 3; ipasa < kNpasa; ipasa++) { |
4d18a639 | 376 | xtalk[ipasa] = 0.2 * (signal[ipasa-2] - signal[ipasa-3]); |
3551db50 | 377 | } |
4d18a639 | 378 | xtalk[0] = 0.0; |
379 | xtalk[1] = 0.0; | |
380 | xtalk[2] = 0.0; | |
915f999b | 381 | |
f2979d08 | 382 | // Argon |
383 | // Ar measurement with Fe55 source by Anton | |
384 | // time bins are 0.02, 0.06, 0.10, ...., 1.90, 1.94, 1.98 microseconds | |
385 | const Int_t kNpasaAr = 50; | |
386 | Float_t xtalkAr[kNpasaAr]; | |
387 | Float_t signalAr[kNpasaAr] = { -0.01, 0.01, 0.00, 0.00, 0.01 | |
388 | , -0.01, 0.01, 2.15, 22.28, 55.53 | |
389 | , 68.52, 58.21, 40.92, 27.12, 18.49 | |
390 | , 13.42, 10.48, 8.67, 7.49, 6.55 | |
391 | , 5.71, 5.12, 4.63, 4.22, 3.81 | |
392 | , 3.48, 3.20, 2.94, 2.77, 2.63 | |
393 | , 2.50, 2.37, 2.23, 2.13, 2.03 | |
394 | , 1.91, 1.83, 1.75, 1.68, 1.63 | |
395 | , 1.56, 1.49, 1.50, 1.49, 1.29 | |
396 | , 1.19, 1.21, 1.21, 1.20, 1.10 }; | |
397 | // Normalization to maximum | |
93ff78d6 | 398 | for (ipasa = 0; ipasa < kNpasaAr; ipasa++) { |
f2979d08 | 399 | signalAr[ipasa] /= 68.52; |
400 | } | |
401 | signalAr[0] = 0.0; | |
402 | signalAr[1] = 0.0; | |
403 | signalAr[2] = 0.0; | |
404 | // With undershoot, positive peak corresponds to ~3% of the main signal: | |
93ff78d6 | 405 | for (ipasa = 3; ipasa < kNpasaAr; ipasa++) { |
f2979d08 | 406 | xtalkAr[ipasa] = 0.2 * (signalAr[ipasa-2] - signalAr[ipasa-3]); |
407 | } | |
408 | xtalkAr[0] = 0.0; | |
409 | xtalkAr[1] = 0.0; | |
410 | xtalkAr[2] = 0.0; | |
4d18a639 | 411 | |
412 | if (fTRFsmp) { | |
413 | delete [] fTRFsmp; | |
414 | } | |
3551db50 | 415 | fTRFsmp = new Float_t[fTRFbin]; |
4d18a639 | 416 | |
417 | if (fCTsmp) { | |
418 | delete [] fCTsmp; | |
419 | } | |
3551db50 | 420 | fCTsmp = new Float_t[fTRFbin]; |
421 | ||
a076fc2f | 422 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
0a17cc30 | 423 | if (fTRFbin != kNpasa) { |
424 | AliError("Array mismatch (xenon)\n\n"); | |
425 | } | |
426 | } | |
a076fc2f | 427 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
0a17cc30 | 428 | if (fTRFbin != kNpasaAr) { |
429 | AliError("Array mismatch (argon)\n\n"); | |
430 | } | |
431 | } | |
432 | ||
3551db50 | 433 | for (Int_t iBin = 0; iBin < fTRFbin; iBin++) { |
a076fc2f | 434 | if (AliTRDCommonParam::Instance()->IsXenon()) { |
f2979d08 | 435 | fTRFsmp[iBin] = signal[iBin]; |
436 | fCTsmp[iBin] = xtalk[iBin]; | |
437 | } | |
a076fc2f | 438 | else if (AliTRDCommonParam::Instance()->IsArgon()) { |
f2979d08 | 439 | fTRFsmp[iBin] = signalAr[iBin]; |
440 | fCTsmp[iBin] = xtalkAr[iBin]; | |
441 | } | |
3551db50 | 442 | } |
443 | ||
444 | } | |
445 | ||
446 | //_____________________________________________________________________________ | |
447 | Double_t AliTRDSimParam::TimeResponse(Double_t time) const | |
448 | { | |
449 | // | |
450 | // Applies the preamp shaper time response | |
915f999b | 451 | // (We assume a signal rise time of 0.2us = fTRFlo/2. |
3551db50 | 452 | // |
453 | ||
a076fc2f | 454 | Double_t rt = (time - .5*fTRFlo) / fTRFwid; |
455 | Int_t iBin = (Int_t) rt; | |
456 | Double_t dt = rt - iBin; | |
7093fb4f | 457 | if ((iBin >= 0) && (iBin+1 < fTRFbin)) { |
458 | return fTRFsmp[iBin] + (fTRFsmp[iBin+1] - fTRFsmp[iBin])*dt; | |
a076fc2f | 459 | } |
460 | else { | |
461 | return 0.0; | |
462 | } | |
463 | ||
3551db50 | 464 | } |
465 | ||
466 | //_____________________________________________________________________________ | |
467 | Double_t AliTRDSimParam::CrossTalk(Double_t time) const | |
468 | { | |
469 | // | |
470 | // Applies the pad-pad capacitive cross talk | |
471 | // | |
472 | ||
a076fc2f | 473 | Double_t rt = (time - fTRFlo) / fTRFwid; |
474 | Int_t iBin = (Int_t) rt; | |
475 | Double_t dt = rt - iBin; | |
7093fb4f | 476 | if ((iBin >= 0) && (iBin+1 < fTRFbin)) { |
477 | return fCTsmp[iBin] + (fCTsmp[iBin+1] - fCTsmp[iBin])*dt; | |
a076fc2f | 478 | } |
479 | else { | |
480 | return 0.0; | |
481 | } | |
482 | ||
3551db50 | 483 | } |