#include "AliRun.h"
#include "AliTRDSimParam.h"
+#include "AliTRDCommonParam.h"
ClassImp(AliTRDSimParam)
,fChipGain(0.0)
,fADCoutRange(0.0)
,fADCinRange(0.0)
- ,fADCthreshold(0)
,fADCbaseline(0)
,fDiffusionOn(kFALSE)
,fElAttachOn(kFALSE)
,fTRFwid(0.0)
,fCTOn(kFALSE)
,fCTsmp(0)
- ,fAnodeWireOffset(0.0)
,fPadCoupling(0.0)
,fTimeCoupling(0.0)
,fTimeStructOn(kFALSE)
,fPRFOn(kFALSE)
+ ,fNTimeBins(0)
{
//
// Default constructor
fNoise = 1250.0;
fADCoutRange = 1023.0; // 10-bit ADC
fADCinRange = 2000.0; // 2V input range
- fADCthreshold = 3;
- // Go back to 0 again, just to be consistent with reconstruction
- fADCbaseline = 0;
- //fADCbaseline = 10;
+ fADCbaseline = 10;
// Diffusion on
fDiffusionOn = kTRUE;
// The time coupling factor (same number as for the TPC)
fTimeCoupling = 0.4;
- // Distance of first Anode wire from first pad edge
- fAnodeWireOffset = 0.25;
-
// Use drift time maps
fTimeStructOn = kTRUE;
// The pad response function
fPRFOn = kTRUE;
+ // The number of time bins
+ fNTimeBins = 30;
+
ReInit();
}
,fChipGain(p.fChipGain)
,fADCoutRange(p.fADCoutRange)
,fADCinRange(p.fADCinRange)
- ,fADCthreshold(p.fADCthreshold)
,fADCbaseline(p.fADCbaseline)
,fDiffusionOn(p.fDiffusionOn)
,fElAttachOn(p.fElAttachOn)
,fTRFwid(p.fTRFwid)
,fCTOn(p.fCTOn)
,fCTsmp(0)
- ,fAnodeWireOffset(p.fAnodeWireOffset)
,fPadCoupling(p.fPadCoupling)
,fTimeCoupling(p.fTimeCoupling)
,fTimeStructOn(p.fTimeStructOn)
,fPRFOn(p.fPRFOn)
+ ,fNTimeBins(p.fNTimeBins)
{
//
// Copy constructor
Int_t iBin = 0;
- if (((AliTRDSimParam &) p).fTRFsmp) {
- delete [] ((AliTRDSimParam &) p).fTRFsmp;
- }
- ((AliTRDSimParam &) p).fTRFsmp = new Float_t[fTRFbin];
+ fTRFsmp = new Float_t[fTRFbin];
for (iBin = 0; iBin < fTRFbin; iBin++) {
- ((AliTRDSimParam &) p).fTRFsmp[iBin] = fTRFsmp[iBin];
+ fTRFsmp[iBin] = ((AliTRDSimParam &) p).fTRFsmp[iBin];
}
- if (((AliTRDSimParam &) p).fCTsmp) {
- delete [] ((AliTRDSimParam &) p).fCTsmp;
- }
- ((AliTRDSimParam &) p).fCTsmp = new Float_t[fTRFbin];
+ fCTsmp = new Float_t[fTRFbin];
for (iBin = 0; iBin < fTRFbin; iBin++) {
- ((AliTRDSimParam &) p).fCTsmp[iBin] = fCTsmp[iBin];
+ fCTsmp[iBin] = ((AliTRDSimParam &) p).fCTsmp[iBin];
}
}
target->fChipGain = fChipGain;
target->fADCoutRange = fADCoutRange;
target->fADCinRange = fADCinRange;
- target->fADCthreshold = fADCthreshold;
target->fADCbaseline = fADCbaseline;
target->fDiffusionOn = fDiffusionOn;
target->fElAttachOn = fElAttachOn;
target->fTRFhi = fTRFhi;
target->fTRFwid = fTRFwid;
target->fCTOn = fCTOn;
- target->fAnodeWireOffset = fAnodeWireOffset;
target->fPadCoupling = fPadCoupling;
target->fTimeCoupling = fTimeCoupling;
target->fPRFOn = fPRFOn;
+ target->fNTimeBins = fNTimeBins;
if (target->fTRFsmp) {
delete[] target->fTRFsmp;
// Reinitializes the parameter class after a change
//
- // The range and the binwidth for the sampled TRF
- fTRFbin = 200;
- // Start 0.2 mus before the signal
- fTRFlo = -0.4;
- // End the maximum drift time after the signal
- fTRFhi = 3.58;
+ if (AliTRDCommonParam::Instance()->IsXenon()) {
+ // The range and the binwidth for the sampled TRF
+ fTRFbin = 200;
+ // Start 0.2 mus before the signal
+ fTRFlo = -0.4;
+ // End the maximum drift time after the signal
+ fTRFhi = 3.58;
+ // Standard gas gain
+ fGasGain = 4000.0;
+ }
+ else if (AliTRDCommonParam::Instance()->IsArgon()) {
+ // The range and the binwidth for the sampled TRF
+ fTRFbin = 50;
+ // Start 0.2 mus before the signal
+ fTRFlo = 0.02;
+ // End the maximum drift time after the signal
+ fTRFhi = 1.98;
+ // Higher gas gain
+ fGasGain = 8000.0;
+ }
+ else {
+ AliFatal("Not a valid gas mixture!");
+ exit(1);
+ }
fTRFwid = (fTRFhi - fTRFlo) / ((Float_t) fTRFbin);
// Create the sampled TRF
{
//
// 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
//
- 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 };
-
- // Andronic & Bercuci parametrization
- // define new TRF parametrization
- // normalizing constant to Fe signal
- const Float_t k1=1.055;
- // time constants
- const Float_t t1=0.04;
- const Float_t t2=.9;
- // the relative fraction of the long component
- const Float_t k2=.15;
- // time offset for Fe
- const Float_t t0=-.29;
- Float_t x = t0; Int_t index;
- for(int i=0; i<kNpasa; i++) signal[i] = 0.;
- for(int i=0; i<kNpasa; i++){
- index = i+6;
- if(index >= kNpasa) break;
- x += .02;
- signal[index]=k1*(TMath::Power((x-t0)/t1, 2.5)*(exp(-(x-t0)/t1))+k2*exp(-(x-t0)/t2));
- }
-
- Float_t xtalk[kNpasa];
+ Int_t ipasa = 0;
+ // Xenon
+ // 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
+ const Int_t kNpasa = 200; // kNpasa should be equal to fTRFbin!
+ Float_t xtalk[kNpasa];
+ 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 };
+ signal[0] = 0.0;
+ signal[1] = 0.0;
+ signal[2] = 0.0;
// With undershoot, positive peak corresponds to ~3% of the main signal:
- for (Int_t ipasa = 3; ipasa < kNpasa; ipasa++) {
+ for (ipasa = 3; ipasa < kNpasa; ipasa++) {
xtalk[ipasa] = 0.2 * (signal[ipasa-2] - signal[ipasa-3]);
}
-
xtalk[0] = 0.0;
xtalk[1] = 0.0;
xtalk[2] = 0.0;
- signal[0] = 0.0;
- signal[1] = 0.0;
- signal[2] = 0.0;
+ // Argon
+ // Ar measurement with Fe55 source by Anton
+ // time bins are 0.02, 0.06, 0.10, ...., 1.90, 1.94, 1.98 microseconds
+ const Int_t kNpasaAr = 50;
+ Float_t xtalkAr[kNpasaAr];
+ Float_t signalAr[kNpasaAr] = { -0.01, 0.01, 0.00, 0.00, 0.01
+ , -0.01, 0.01, 2.15, 22.28, 55.53
+ , 68.52, 58.21, 40.92, 27.12, 18.49
+ , 13.42, 10.48, 8.67, 7.49, 6.55
+ , 5.71, 5.12, 4.63, 4.22, 3.81
+ , 3.48, 3.20, 2.94, 2.77, 2.63
+ , 2.50, 2.37, 2.23, 2.13, 2.03
+ , 1.91, 1.83, 1.75, 1.68, 1.63
+ , 1.56, 1.49, 1.50, 1.49, 1.29
+ , 1.19, 1.21, 1.21, 1.20, 1.10 };
+ // Normalization to maximum
+ for (ipasa = 0; ipasa < kNpasaAr; ipasa++) {
+ signalAr[ipasa] /= 68.52;
+ }
+ signalAr[0] = 0.0;
+ signalAr[1] = 0.0;
+ signalAr[2] = 0.0;
+ // With undershoot, positive peak corresponds to ~3% of the main signal:
+ for (ipasa = 3; ipasa < kNpasaAr; ipasa++) {
+ xtalkAr[ipasa] = 0.2 * (signalAr[ipasa-2] - signalAr[ipasa-3]);
+ }
+ xtalkAr[0] = 0.0;
+ xtalkAr[1] = 0.0;
+ xtalkAr[2] = 0.0;
if (fTRFsmp) {
delete [] fTRFsmp;
}
fCTsmp = new Float_t[fTRFbin];
+ if (AliTRDCommonParam::Instance()->IsXenon()) {
+ if (fTRFbin != kNpasa) {
+ AliError("Array mismatch (xenon)\n\n");
+ }
+ }
+ else if (AliTRDCommonParam::Instance()->IsArgon()) {
+ if (fTRFbin != kNpasaAr) {
+ AliError("Array mismatch (argon)\n\n");
+ }
+ }
+
for (Int_t iBin = 0; iBin < fTRFbin; iBin++) {
- fTRFsmp[iBin] = signal[iBin];
- fCTsmp[iBin] = xtalk[iBin];
+ if (AliTRDCommonParam::Instance()->IsXenon()) {
+ fTRFsmp[iBin] = signal[iBin];
+ fCTsmp[iBin] = xtalk[iBin];
+ }
+ else if (AliTRDCommonParam::Instance()->IsArgon()) {
+ fTRFsmp[iBin] = signalAr[iBin];
+ fCTsmp[iBin] = xtalkAr[iBin];
+ }
}
}
// (We assume a signal rise time of 0.2us = fTRFlo/2.
//
- Int_t iBin = ((Int_t) ((time - fTRFlo/2.0) / fTRFwid));
- if ((iBin >= 0) &&
- (iBin < fTRFbin)) {
- return fTRFsmp[iBin];
- }
+ Double_t rt = (time - .5*fTRFlo) / fTRFwid;
+ Int_t iBin = (Int_t) rt;
+ Double_t dt = rt - iBin;
+ if ((iBin >= 0) && (iBin+1 < fTRFbin)) {
+ return fTRFsmp[iBin] + (fTRFsmp[iBin+1] - fTRFsmp[iBin])*dt;
+ }
else {
return 0.0;
- }
+ }
}
// Applies the pad-pad capacitive cross talk
//
- Int_t iBin = ((Int_t) ((time - fTRFlo) / fTRFwid));
- if ((iBin >= 0) &&
- (iBin < fTRFbin)) {
- return fCTsmp[iBin];
- }
+ Double_t rt = (time - fTRFlo) / fTRFwid;
+ Int_t iBin = (Int_t) rt;
+ Double_t dt = rt - iBin;
+ if ((iBin >= 0) && (iBin+1 < fTRFbin)) {
+ return fCTsmp[iBin] + (fCTsmp[iBin+1] - fCTsmp[iBin])*dt;
+ }
else {
return 0.0;
- }
+ }
}