//
// The range and the binwidth for the sampled TRF
- fTRFbin = 100;
+ fTRFbin = 200;
// Start 0.2 mus before the signal
- fTRFlo = -0.2;
+ fTRFlo = -0.4;
// End the maximum drift time after the signal
- fTRFhi = 2.2;
+ fTRFhi = 3.58;
//
fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);
SampleTRF();
}
+
//_____________________________________________________________________________
void AliTRDSimParam::SampleTRF()
{
//
- // Samples the time response function
- //
- // New TRF from Venelin Angelov, simulated with CADENCE
- // Pad-ground capacitance = 25 pF
- // Pad-pad cross talk capacitance = 6 pF
+ // Samples the new time response function.
+ // From Antons measurements with Fe55 source, adjusted by C. Lippmann.
+ // time bins are -0.4, -0.38, -0.36, ...., 3.54, 3.56, 3.58 microseconds
//
- Int_t ipos1;
- Int_t ipos2;
- Float_t diff;
-
- const Int_t kNpasa = 252;
-
- Float_t time[kNpasa] = { -0.220000, -0.210000, -0.200000, -0.190000
- , -0.180000, -0.170000, -0.160000, -0.150000
- , -0.140000, -0.130000, -0.120000, -0.110000
- , -0.100000, -0.090000, -0.080000, -0.070000
- , -0.060000, -0.050000, -0.040000, -0.030000
- , -0.020000, -0.010000, -0.000000, 0.010000
- , 0.020000, 0.030000, 0.040000, 0.050000
- , 0.060000, 0.070000, 0.080000, 0.090000
- , 0.100000, 0.110000, 0.120000, 0.130000
- , 0.140000, 0.150000, 0.160000, 0.170000
- , 0.180000, 0.190000, 0.200000, 0.210000
- , 0.220000, 0.230000, 0.240000, 0.250000
- , 0.260000, 0.270000, 0.280000, 0.290000
- , 0.300000, 0.310000, 0.320000, 0.330000
- , 0.340000, 0.350000, 0.360000, 0.370000
- , 0.380000, 0.390000, 0.400000, 0.410000
- , 0.420000, 0.430000, 0.440000, 0.450000
- , 0.460000, 0.470000, 0.480000, 0.490000
- , 0.500000, 0.510000, 0.520000, 0.530000
- , 0.540000, 0.550000, 0.560000, 0.570000
- , 0.580000, 0.590000, 0.600000, 0.610000
- , 0.620000, 0.630000, 0.640000, 0.650000
- , 0.660000, 0.670000, 0.680000, 0.690000
- , 0.700000, 0.710000, 0.720000, 0.730000
- , 0.740000, 0.750000, 0.760000, 0.770000
- , 0.780000, 0.790000, 0.800000, 0.810000
- , 0.820000, 0.830000, 0.840000, 0.850000
- , 0.860000, 0.870000, 0.880000, 0.890000
- , 0.900000, 0.910000, 0.920000, 0.930000
- , 0.940000, 0.950000, 0.960000, 0.970000
- , 0.980000, 0.990000, 1.000000, 1.010000
- , 1.020000, 1.030000, 1.040000, 1.050000
- , 1.060000, 1.070000, 1.080000, 1.090000
- , 1.100000, 1.110000, 1.120000, 1.130000
- , 1.140000, 1.150000, 1.160000, 1.170000
- , 1.180000, 1.190000, 1.200000, 1.210000
- , 1.220000, 1.230000, 1.240000, 1.250000
- , 1.260000, 1.270000, 1.280000, 1.290000
- , 1.300000, 1.310000, 1.320000, 1.330000
- , 1.340000, 1.350000, 1.360000, 1.370000
- , 1.380000, 1.390000, 1.400000, 1.410000
- , 1.420000, 1.430000, 1.440000, 1.450000
- , 1.460000, 1.470000, 1.480000, 1.490000
- , 1.500000, 1.510000, 1.520000, 1.530000
- , 1.540000, 1.550000, 1.560000, 1.570000
- , 1.580000, 1.590000, 1.600000, 1.610000
- , 1.620000, 1.630000, 1.640000, 1.650000
- , 1.660000, 1.670000, 1.680000, 1.690000
- , 1.700000, 1.710000, 1.720000, 1.730000
- , 1.740000, 1.750000, 1.760000, 1.770000
- , 1.780000, 1.790000, 1.800000, 1.810000
- , 1.820000, 1.830000, 1.840000, 1.850000
- , 1.860000, 1.870000, 1.880000, 1.890000
- , 1.900000, 1.910000, 1.920000, 1.930000
- , 1.940000, 1.950000, 1.960000, 1.970000
- , 1.980000, 1.990000, 2.000000, 2.010000
- , 2.020000, 2.030000, 2.040000, 2.050000
- , 2.060000, 2.070000, 2.080000, 2.090000
- , 2.100000, 2.110000, 2.120000, 2.130000
- , 2.140000, 2.150000, 2.160000, 2.170000
- , 2.180000, 2.190000, 2.200000, 2.210000
- , 2.220000, 2.230000, 2.240000, 2.250000
- , 2.260000, 2.270000, 2.280000, 2.290000 };
-
- Float_t signal[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000396
- , 0.005096, 0.022877, 0.061891, 0.126614
- , 0.215798, 0.324406, 0.444507, 0.566817
- , 0.683465, 0.787089, 0.873159, 0.937146
- , 0.979049, 0.999434, 1.000000, 0.983579
- , 0.954134, 0.913364, 0.866365, 0.813703
- , 0.759910, 0.706116, 0.653454, 0.603624
- , 0.556625, 0.514156, 0.475085, 0.439977
- , 0.408834, 0.380578, 0.355549, 0.333352
- , 0.313647, 0.296093, 0.280351, 0.266195
- , 0.253397, 0.241789, 0.231257, 0.221574
- , 0.212627, 0.204417, 0.196772, 0.189581
- , 0.182956, 0.176784, 0.171008, 0.165515
- , 0.160419, 0.155606, 0.151076, 0.146716
- , 0.142639, 0.138845, 0.135221, 0.131767
- , 0.128482, 0.125368, 0.122424, 0.119592
- , 0.116931, 0.114326, 0.111891, 0.109513
- , 0.107248, 0.105096, 0.103058, 0.101019
- , 0.099151, 0.097282, 0.095527, 0.093715
- , 0.092129, 0.090544, 0.088958, 0.087429
- , 0.086014, 0.084598, 0.083239, 0.081880
- , 0.080634, 0.079388, 0.078143, 0.077010
- , 0.075878, 0.074745, 0.073669, 0.072593
- , 0.071574, 0.070612, 0.069649, 0.068686
- , 0.067780, 0.066874, 0.066025, 0.065176
- , 0.064326, 0.063533, 0.062684, 0.061948
- , 0.061212, 0.060419, 0.059740, 0.059003
- , 0.058324, 0.057644, 0.057022, 0.056342
- , 0.055663, 0.055096, 0.054473, 0.053851
- , 0.053284, 0.052718, 0.052152, 0.051585
- , 0.051019, 0.050566, 0.050000, 0.049490
- , 0.048981, 0.048528, 0.048018, 0.047508
- , 0.047055, 0.046602, 0.046149, 0.045696
- , 0.045300, 0.044904, 0.044451, 0.044054
- , 0.043658, 0.043205, 0.042865, 0.042469
- , 0.042072, 0.041733, 0.041336, 0.040997
- , 0.040657, 0.040260, 0.039921, 0.039581
- , 0.039241, 0.038958, 0.038618, 0.038335
- , 0.037995, 0.037656, 0.037373, 0.037089
- , 0.036806, 0.036467, 0.036183, 0.035900
- , 0.035617, 0.035334, 0.035108, 0.034824
- , 0.034541, 0.034315, 0.034032, 0.033805
- , 0.033522, 0.033296, 0.033069, 0.032786
- , 0.032559, 0.032333, 0.032106, 0.031880
- , 0.031653, 0.031427, 0.031200, 0.030974
- , 0.030804, 0.030578, 0.030351, 0.030125
- , 0.029955, 0.029785, 0.029558, 0.029332
- , 0.029162, 0.028992, 0.028766, 0.028596
- , 0.028426, 0.028199, 0.028086, 0.027860
- , 0.027746, 0.027633, 0.027463, 0.027293
- , 0.027180, 0.027067, 0.026954, 0.026954
- , 0.026840, 0.026727, 0.026727, 0.026614
- , 0.026614, 0.026614, 0.026557, 0.026501
- , 0.026501, 0.026501, 0.026501, 0.026501
- , 0.026501, 0.026501, 0.026501, 0.026387
- , 0.026387, 0.026387, 0.026387, 0.026387
- , 0.026387, 0.026387, 0.026387, 0.026387
- , 0.026387, 0.026387, 0.026387, 0.026387
- , 0.026387, 0.026274, 0.026274, 0.026274
- , 0.026274, 0.026274, 0.026274, 0.026274
- , 0.026274, 0.026274, 0.026274, 0.026274
- , 0.026274, 0.026274, 0.026274, 0.026161 };
-
- Float_t xtalk[kNpasa] = { 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000113
- , 0.000793, 0.003058, 0.007305, 0.013194
- , 0.019706, 0.025821, 0.030634, 0.033465
- , 0.034145, 0.032729, 0.029615, 0.025198
- , 0.019989, 0.014496, 0.009003, 0.003964
- , -0.000510, -0.004190, -0.007191, -0.009400
- , -0.010872, -0.011835, -0.012288, -0.012288
- , -0.012005, -0.011495, -0.010872, -0.010136
- , -0.009343, -0.008607, -0.007871, -0.007191
- , -0.006512, -0.005946, -0.005379, -0.004926
- , -0.004473, -0.004077, -0.003737, -0.003398
- , -0.003114, -0.002831, -0.002605, -0.002378
- , -0.002208, -0.002039, -0.001869, -0.001699
- , -0.001585, -0.001472, -0.001359, -0.001246
- , -0.001132, -0.001019, -0.001019, -0.000906
- , -0.000906, -0.000793, -0.000793, -0.000680
- , -0.000680, -0.000680, -0.000566, -0.000566
- , -0.000566, -0.000566, -0.000453, -0.000453
- , -0.000453, -0.000453, -0.000453, -0.000453
- , -0.000340, -0.000340, -0.000340, -0.000340
- , -0.000340, -0.000340, -0.000340, -0.000340
- , -0.000340, -0.000340, -0.000340, -0.000340
- , -0.000340, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000227
- , -0.000227, -0.000227, -0.000227, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, -0.000113
- , -0.000113, -0.000113, -0.000113, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000
- , 0.000000, 0.000000, 0.000000, 0.000000 };
-
- // increase CrossTalk to measurements
- for (Int_t ipasa = 0; ipasa < kNpasa; ipasa++) {
- xtalk[ipasa] *= 1.75;
+ const Int_t kNpasa = 200; // kNpasa should be equal to fTRFbin!
+
+ Float_t signal[kNpasa]={0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000,
+ 0.0002, 0.0007, 0.0026, 0.0089, 0.0253, 0.0612, 0.1319,
+ 0.2416, 0.3913, 0.5609, 0.7295, 0.8662, 0.9581, 1.0000,
+ 0.9990, 0.9611, 0.8995, 0.8269, 0.7495, 0.6714, 0.5987,
+ 0.5334, 0.4756, 0.4249, 0.3811, 0.3433, 0.3110, 0.2837,
+ 0.2607, 0.2409, 0.2243, 0.2099, 0.1974, 0.1868, 0.1776,
+ 0.1695, 0.1627, 0.1566, 0.1509, 0.1457, 0.1407, 0.1362,
+ 0.1317, 0.1274, 0.1233, 0.1196, 0.1162, 0.1131, 0.1102,
+ 0.1075, 0.1051, 0.1026, 0.1004, 0.0979, 0.0956, 0.0934,
+ 0.0912, 0.0892, 0.0875, 0.0858, 0.0843, 0.0829, 0.0815,
+ 0.0799, 0.0786, 0.0772, 0.0757, 0.0741, 0.0729, 0.0718,
+ 0.0706, 0.0692, 0.0680, 0.0669, 0.0655, 0.0643, 0.0630,
+ 0.0618, 0.0607, 0.0596, 0.0587, 0.0576, 0.0568, 0.0558,
+ 0.0550, 0.0541, 0.0531, 0.0522, 0.0513, 0.0505, 0.0497,
+ 0.0490, 0.0484, 0.0474, 0.0465, 0.0457, 0.0449, 0.0441,
+ 0.0433, 0.0425, 0.0417, 0.0410, 0.0402, 0.0395, 0.0388,
+ 0.0381, 0.0374, 0.0368, 0.0361, 0.0354, 0.0348, 0.0342,
+ 0.0336, 0.0330, 0.0324, 0.0318, 0.0312, 0.0306, 0.0301,
+ 0.0296, 0.0290, 0.0285, 0.0280, 0.0275, 0.0270, 0.0265,
+ 0.0260, 0.0256, 0.0251, 0.0246, 0.0242, 0.0238, 0.0233,
+ 0.0229, 0.0225, 0.0221, 0.0217, 0.0213, 0.0209, 0.0206,
+ 0.0202, 0.0198, 0.0195, 0.0191, 0.0188, 0.0184, 0.0181,
+ 0.0178, 0.0175, 0.0171, 0.0168, 0.0165, 0.0162, 0.0159,
+ 0.0157, 0.0154, 0.0151, 0.0148, 0.0146, 0.0143, 0.0140,
+ 0.0138, 0.0135, 0.0133, 0.0131, 0.0128, 0.0126, 0.0124,
+ 0.0121, 0.0119, 0.0120, 0.0115, 0.0113, 0.0111, 0.0109,
+ 0.0107, 0.0105, 0.0103, 0.0101, 0.0100, 0.0098, 0.0096,
+ 0.0094, 0.0092, 0.0091, 0.0089, 0.0088, 0.0086, 0.0084,
+ 0.0083, 0.0081, 0.0080, 0.0078};
+
+ Float_t xtalk[kNpasa];
+
+ for (Int_t ipasa = 3; ipasa < kNpasa; ipasa++) {
+ //signal[ipasa] /= 0.44; // normalise area to 1
+ // With undershoot, positive peak corresponds to ~3% of the main signal:
+ xtalk[ipasa] = 0.2*(signal[ipasa-2]-signal[ipasa-3]);
}
+ xtalk[0] = 0.0; signal[0] = 0.0;
+ xtalk[1] = 0.0; signal[1] = 0.0;
+ xtalk[2] = 0.0; signal[2] = 0.0;
+
if (fTRFsmp) delete [] fTRFsmp;
fTRFsmp = new Float_t[fTRFbin];
if (fCTsmp) delete [] fCTsmp;
fCTsmp = new Float_t[fTRFbin];
- Float_t loTRF = TMath::Max(fTRFlo, time[0]);
- Float_t hiTRF = TMath::Min(fTRFhi, time[kNpasa-1]);
- Float_t binWidth = (hiTRF - loTRF) / ((Float_t) fTRFbin);
-
- // Take the linear interpolation
for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
-
- Float_t bin = (((Float_t) iBin) + 0.5) * binWidth + loTRF;
- ipos1 = ipos2 = 0;
- diff = 0;
- do {
- diff = bin - time[ipos2++];
- } while (diff > 0);
- ipos2--;
- if (ipos2 >= kNpasa) ipos2 = kNpasa - 1;
- ipos1 = ipos2 - 1;
-
- fTRFsmp[iBin] = signal[ipos2]
- + diff * (signal[ipos2] - signal[ipos1])
- / ( time[ipos2] - time[ipos1]);
-
- fCTsmp[iBin] = xtalk[ipos2]
- + diff * (xtalk[ipos2] - xtalk[ipos1])
- / ( time[ipos2] - time[ipos1]);
-
+ fTRFsmp[iBin] = signal[iBin];
+ fCTsmp[iBin] = xtalk[iBin];
}
}
{
//
// Applies the preamp shaper time response
+ // (We assume a signal rise time of 0.2us = fTRFlo/2.
//
- Int_t iBin = ((Int_t) ((time) / fTRFwid));
- //Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
+ Int_t iBin = ((Int_t) ((time - fTRFlo/2.) / fTRFwid));
if ((iBin >= 0) && (iBin < fTRFbin)) {
return fTRFsmp[iBin];
}
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff